ISMD 2013
“softQCD” and Correlations
Conveners
Rick Field & Nick Van Remortel
Session 1 (9:00am-10:30am)
Tevatron Energy Scan: Findings & Surprises (Rick Field).
Results on the UE and DPS with the CMS Detector (Roberta Arcidiacono).
Results on the UE and DPS with the ATLAS Detector (Benjamin Wynne).
Underlying Event Studies at the Tevatron and the LHC (Deepak Kar).
Session 2 (11:00am-1:00pm)
Aspects of soft QCD, correlations, particle spectra and multiplicities (Nick Van Remortel).
Improved Isolation of the UE based on MB Trigger-Associated Hadron Correlations (Tom Trainor).
Color Reconnection and Its Effect on Precise Measurements at the LHC (Torbjörn Sjöstrand).
Studies of the Helix Model Using pp Collisions (Sarka Todorova).
High Multiplicity in pp Interactions at U-70 (Elena Kokoulina).
Measurement of Charged Kaon Correlations at Small Relative Momentum in the SELEX Experiment
(Grigory Nigmatkulov)
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 1
ISMD13 “softQCD”
Tevatron Energy Scan: Findings & Surprises
Rick Field
University of Florida
Proton
CDF
1 mile
Outline of Talk
LPCC MB&UE working group “common plots”.
CDF MB “common plots” from the Tevatron
Energy Scan.
CDF UE “common plots” from the Tevatron
Energy Scan.
AntiProton
CDF Run 2
300 GeV, 900 GeV, 1.96 TeV
Mapping out the energy dependence of
MB & UE: Tevatron to the LHC!
Outgoing Parton
PT(hard)
CDF new UE observables from the Tevatron
Energy Scan.
Initial-State Radiation
Proton
AntiProton
Underlying Event
Underlying Event
Comparisons with PYTHIA 6.4 Tune Z1,
PYTHIA 6.4 Tune Z2*, and PYTHIA 8
Tune 4C.
Summary & Conclusions.
ISMD 2013 Chicago
September 17, 2013
Outgoing Parton
CMS at the LHC
900 GeV, 7 & 8 TeV
Final-State
Radiation
Rick Field – Florida/CDF/CMS
Page 2
MB&UE Working Group
MB & UE Common Plots
CMS
ATLAS
The LPCC MB&UE Working Group has suggested
several MB&UE “Common Plots” the all the LHC
groups can produce and compare with each other.
Outgoing Parton
“Minimum Bias” Collisions
PT(hard)
Initial-State Radiation
Proton
Proton
Underlying Event
Outgoing Parton
ISMD 2013 Chicago
September 17, 2013
Proton
Proton
Underlying Event
Final-State
Radiation
Rick Field – Florida/CDF/CMS
Page 3
CMS Common Plots
Observable
900 GeV
7 TeV
MB1: dNchg/dη
η Nchg ≥ 1
|η
η| < 0.8 pT > 0.5 Gev/c & 1.0 GeV/c
Done
QCD-10-024
Done
QCD-10-024
MB2: dNchg/dpT Nchg ≥ 1 |η
η| < 0.8
Stalled
Stalled
MB3: Multiplicity Distribution
|η
η| < 0.8 pT > 0.5 GeV/c & 1.0 GeV/c
Stalled
Stalled
MB4: <pT> versus Nchg
|η
η| < 0.8 pT > 0.5 GeV/c & 1.0 GeV/c
In progress
(Antwerp)
In progress
(Antwerp)
UE1: Transverse Nchg & PTsum as
defined by the leading charged
particle, PTmax
|η
η| < 0.8 pT > 0.5 GeV/c & 1.0 GeV/c
Done
FSQ-12-020
Done
FSQ-12-020
Direct charged particles (including leptons) corrected to
the particle level with no corrections for SD or DD.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 4
CMS Common Plots
Observable
900 GeV
7 TeV
MB1: dNchg/dη
η Nchg ≥ 1
|η
η| < 0.8 pT > 0.5 Gev/c & 1.0 GeV/c
Done
QCD-10-024
Done
QCD-10-024
Stalled
Stalled
MB2: dNchg/dpT Nchg ≥ 1 |η
η| < 0.8
that all the “common plots” require
MB3: MultiplicityNote
Distribution
Stalled
one charged
particle with Stalled
|η
η| < 0.8 pT > 0.5 GeV/cat&least
1.0 GeV/c
η| < 0.8!
p > 0.5 GeV/c and |η
MB4: <pT> versus Nchg T
In progress
This done so that the plots are
(Antwerp)
|η
η| < 0.8 pT > 0.5 GeV/c & 1.0 GeV/c
In progress
(Antwerp)
UE1: Transverse Nchg & PTsum as
defined by the leading charged
particle, PTmax
|η
η| < 0.8 pT > 0.5 GeV/c & 1.0 GeV/c
Done
FSQ-12-020
less sensitive to SD and DD.
Done
FSQ-12-020
Direct charged particles (including leptons) corrected to
the particle level with no corrections for SD or DD.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 5
MB Common Plots 7 TeV
Direct charged particles (including leptons) corrected to
the particle level with no corrections for SD or DD.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 6
Tevatron Energy Scan
Proton
CDF
1 mile
AntiProton
Proton
1.96 TeV
AntiProton
Just before the shutdown of the Tevatron CDF
has collected more than 10M “min-bias” events
at several center-of-mass energies!
300 GeV 12.1M MB Events
900 GeV 54.3M MB Events
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 7
CDF Common Plots
Observable
300 GeV
900 GeV
1.96 TeV
Done
Done
Done
MB2: dNchg/dpT Nchg ≥ 1 |η
η| < 0.8
In progress
In progress
In progress
MB3: Multiplicity Distribution
|η
η| < 0.8 pT > 0.5 GeV/c & 1.0 GeV/c
In progress
In progress
In progress
MB4: <pT> versus Nchg
|η
η| < 0.8 pT > 0.5 GeV/c & 1.0 GeV/c
In progress
In progress
In progress
UE1: Transverse Nchg & PTsum as
defined by the leading charged
particle, PTmax
|η
η| < 0.8 pT > 0.5 GeV/c & 1.0 GeV/c
pT > 0.5 GeV/c
Done
MB1: dNchg/dη
η Nchg ≥ 1
|η
η| < 0.8 pT > 0.5 Gev/c & 1.0 GeV/c
pT > 0.5 GeV/c pT > 0.5 GeV/c
Done
Done
Direct charged particles (including leptons) corrected to
the particle level with no corrections for SD or DD.
R. Field, C. Group, and D. Wilson.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 8
MB Common Plots 900 GeV
Direct charged particles (including leptons) corrected to
the particle level with no corrections for SD or DD.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 9
MB Common Plots 900 GeV
Pseudo-Rapidity Distribution: dN/dη
η
Pseudo-Rapidity Distribution: dN/dη
η
1.15
2.2
RDF Preliminary
CDF
RDF Preliminary
900 GeV
2.0
1.8
CMS
1.6
ATLAS
ALICE
900 GeV
Corrected Data
Average Number
Average Number
Corrected Data
1.10
1.05
1.00
At least 1 charged particle
CDF
CMS
ATLAS
ALICE
At least 1 charged
particle
Charged Particles (|η
η|<0.8, PT>1.0 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
1.4
-1.0
0.95
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-1.0
-0.8
Pseudo-Rapidity
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
Pseudo-Rapidity
Direct charged particles (including leptons) corrected to
the particle level with no corrections for SD or DD.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 10
1.0
New CDF MB Data
ηη
Pseudo-Rapidity Distribution: dN/dη
2.5
3
RDF
CDF Preliminary
Preliminary
Average
Average Number
Number
Corrected
Corrected Data
Data
900 GeV
1.96 TeV
CDF
2
900 GeV
2.0
300 GeV
1
Atleast
least11charged
chargedparticle
particle
At
CMS
0
1.5
-1.0
-1.0
-0.8
-0.8
Charged
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
ηη|<0.8,
-0.6
-0.6
-0.4
-0.4
-0.2
-0.2
0.0
0.0
0.2
0.2
0.4
0.4
0.6
0.6
0.8
0.8
1.0
1.0
Pseudo-Rapidity
Pseudo-Rapidity
New Corrected CDF data at 300 GeV, 900 GeV, and 1.96 TeV on on pseudo-rapidity
distribution of charged particles, dN/dη
η, with pT > 0.5 GeV/c. Events are required to
have at least one charged particle with |η
η| < 0.8 and pT > 0.5 GeV/c. The data are
corrected to the particle level with errors that include both the statistical error and
the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 11
New CDF MB Data
CMS
ηη
Pseudo-Rapidity Distribution:
Distribution: dN/dη
dN/dη
2.5
3
4
RDF
Preliminary
CDF
Preliminary
RDF
Preliminary
Average
Number
AverageNumber
Number
Average
Corrected
Data
Corrected
Data
Corrected
Data
3
2
CDF
CDF
2.0
2
CDF
CDF
1
1
1.96 TeV
900 GeV
900 GeV
300 GeV
300 GeV
Atleast
least11charged
chargedparticle
particle
At
CMS Tune Z1
0
1.5
-1.0
-1.0
900 GeV
7 TeV
1.96 TeV
-0.8
-0.8
-0.6
-0.6
-0.6
Charged
Particles
(|η
|<0.8,
PT>0.5
GeV/c)
Charged
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
ηηη|<0.8,
-0.4
-0.4
-0.4
-0.2
-0.2
-0.2
0.0
0.0
0.0
0.2
0.2
0.2
0.4
0.4
0.4
0.6
0.6
0.6
0.8
0.8
1.0
1.0
Pseudo-Rapidity
Pseudo-Rapidity
Pseudo-Rapidity
New Corrected CDF data at 300 GeV, 900 GeV, and 1.96 TeV on on pseudo-rapidity
distribution of charged particles, dN/dη
η, with pT > 0.5 GeV/c. Events are required to
have at least one charged particle with |η
η| < 0.8 and pT > 0.5 GeV/c. The data are
corrected to the particle level with errors that include both the statistical error and
the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 12
New CDF MB Data
η
Pseudo-Rapidity Distribution: dN/dη
1.2
1.5
CDF Preliminary
RDF
CDF
Average Number
Corrected Data
Data
Corrected
1.96 TeV
1.1
900 GeV
1.0
CMS
900 GeV
0.9
0.5
0.8
-1.0
300 GeV
-0.8
-0.6
At 1least
1 charged
At least
charged
particle
particle
ChargedParticles
Particles(|η
(|η
|<0.8,PT>1.0
PT>1.0GeV/c)
GeV/c)
Charged
ηη|<0.8,
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
Pseudo-Rapidity
New Corrected CDF data at 300 GeV, 900 GeV, and 1.96 TeV on on pseudo-rapidity
distribution of charged particles, dN/dη
η, with pT > 1.0 GeV/c. Events are required to
have at least one charged particle with |η
η| < 0.8 and pT > 1.0 GeV/c. The data are
corrected to the particle level with errors that include both the statistical error and
the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 13
New CDF MB Data
CMS
η
Pseudo-Rapidity
η
Pseudo-Rapidity Distribution:
Distribution: dN/dη
dN/dη
1.2
1.5
2.0
CDFPreliminary
RDF
Preliminary
RDF
Average
Number
AverageNumber
7 TeV
CDF
CorrectedData
Data
Corrected
Data
Corrected
1.96 TeV
1.1
1.5
1.96 TeV
CDF
CDF
1.0
0.9
CDF
1.0
CMS
900 GeV
900 GeV
300 GeV
300 GeV
0.5
0.8
0.5
-1.0
-1.0
900 GeV
-0.8
-0.8
-0.6
-0.6
Tune Z1
-0.4
-0.4
-0.2
-0.2
At least 1 charged
AtAtleast
least1 1charged
chargedparticle
particle
particle
Charged
Particles
(|η
PT>1.0
GeV/c)
η|<0.8,
Charged
η
ChargedParticles
Particles(|η
(|η
|<0.8,PT>1.0
PT>1.0GeV/c)
GeV/c)
η|<0.8,
0.0
0.0
0.2
0.2
0.4
0.4
0.6
0.6
0.8
0.8
1.0
1.0
Pseudo-Rapidity
Pseudo-Rapidity
New Corrected CDF data at 300 GeV, 900 GeV, and 1.96 TeV on on pseudo-rapidity
distribution of charged particles, dN/dη
η, with pT > 1.0 GeV/c. Events are required to
have at least one charged particle with |η
η| < 0.8 and pT > 1.0 GeV/c. The data are
corrected to the particle level with errors that include both the statistical error and
the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 14
Energy Dependence dN/dη
η(η
η=0)
Pseudo-Rapidity Distribution: dN/dη
3.5
RDF Preliminary
Corrected Data
Average Number
3.0
CDF black dots
CMS red squares
2.5
2.0
At least 1 charged particle
1.5
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
1.0
0.1
1.0
10.0
Center-of-Mass Energy (GeV)
CMS data at 7 TeV and 900 GeV and CDF data at 1.96 TeV, 900 GeV, and 300 GeV
on dN/dη
η at η = 0 with pT > 0.5 GeV/c as a function of the center-of-mass energy.
Events are required to have at least one charged particle with |η
η| < 0.8 and pT > 0.5
GeV/c. The data are corrected to the particle level with errors that include both the
statistical error and the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 15
Energy Dependence dN/dη
Pseudo-Rapidity Distribution:
Distribution: dN/dη
dN/dη
(η
=0)
ηη(η
ηη=0)
Pseudo-Rapidity
3.5
3.5
RDF Preliminary
Preliminary
RDF
Average Number
3.0
3.0
Corrected Data
Data
Corrected
CDF black
black dots
dots
CDF
CMS red
red squares
squares
CMS
Tune Z1
2.5
2.5
2.0
2.0
At least
least 11 charged
charged particle
particle
At
1.5
1.5
Charged Particles
Particles (|η
(|η
|<0.8, PT>0.5
PT>0.5 GeV/c)
GeV/c)
Charged
ηη|<0.8,
1.0
1.0
0.1
0.1
1.0
1.0
10.0
10.0
Center-of-Mass Energy
Energy (GeV)
(GeV)
Center-of-Mass
CMS data at 7 TeV and 900 GeV and CDF data at 1.96 TeV, 900 GeV, and 300 GeV
on dN/dη
η at η = 0 with pT > 0.5 GeV/c as a function of the center-of-mass energy.
Events are required to have at least one charged particle with |η
η| < 0.8 and pT > 0.5
GeV/c. The data are corrected to the particle level with errors that include both the
statistical error and the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 16
Energy Dependence dN/dη
η(η
η=0)
Pseudo-Rapidity Distribution: dN/dη
2.0
RDF Preliminary
Average Number
Corrected Data
CDF black dots
CMS red squares
Tune Z1
1.5
1.0
At least 1 charged particle
Charged Particles (|η
η|<0.8, PT>1.0 GeV/c)
0.5
0.1
1.0
10.0
Center-of-Mass Energy (GeV)
CMS data at 7 TeV and 900 GeV and CDF data at 1.96 TeV, 900 GeV, and 300 GeV
on dN/dη
η at η = 0 with pT > 1.0 GeV/c as a function of the center-of-mass energy.
Events are required to have at least one charged particle with |η
η| < 0.8 and pT > 1.0
GeV/c. The data are corrected to the particle level with errors that include both the
statistical error and the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 17
Overall Charged Particle Density
Pseudo-Rapidity Distribution: dN/dη
η
Overall Charged Particle Density
3
0.50
CDF Preliminary
Corrected Data
2
900 GeV
300 GeV
1
Charged Density
Average Number
RDF Preliminary
1.96 TeV
Corrected Data
CMS red squares
CDF blue dots
0.40
0.30
At least 1 charged particle
At least 1 charged particle
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.20
0
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
0.1
1.0
Corrected CDF data on the pseudo-rapidity distribution, dN/dη
η, for charged with pT > 0.5
GeV/c and |η
η| < 0.8 for events with at least one
charged particle with pT > 0.5 GeV/c and |η
η| <
0.8.
Ecm
Nchg
error
NchgDen
error
300 GeV
2.241
0.175
0.223
0.017
900 GeV
3.012
0.203
0.300
0.020
1.96 TeV
3.439
0.186
0.342
0.019
ISMD 2013 Chicago
September 17, 2013
1.0
10.0
Center-of-Mass Energy (TeV)
Pseudo-Rapidity
Corrected CDF and CMS data overall density of
charged particles with pT > 0.5 GeV/c and |η
η| <
0.8 for events with at least one charged particle
with pT > 0.5 GeV/c and |η
η| < 0.8 plotted versus
the center-of-mass energy (log scale). The data
are corrected to the particle level with errors
that include both the statistical error and the
systematic uncertainty.
0.8
N chg =
dN
∫−0.8 dη dη
Rick Field – Florida/CDF/CMS
Page 18
UE Observables
“Transverse” Charged Particle Density: Number of charged
particles (pT > 0.5 GeV/c, |η
η| < ηcut) in the “transverse” region as
defined by the leading charged particle, PTmax, divided by the
area in η-φ
φ space, 2η
ηcut×2π
π/3, averaged over all events with at least
one particle with pT > 0.5 GeV/c, |η
η| < ηcut.
“Transverse” Charged PTsum Density: Scalar pT sum of the
charged particles (pT > 0.5 GeV/c, |η
η| < ηcut) in the “transverse”
region as defined by the leading charged particle, PTmax, divided
by the area in η-φ
φ space, 2η
ηcut×2π
π/3, averaged over all events with
η| < ηcut.
at least one particle with pT > 0.5 GeV/c, |η
PTmax Direction
∆φ
“Toward”
“Transverse”
“Transverse”
“Away”
“Transverse” Charged Particle Average PT: Event-by-event <pT> = PTsum/Nchg for charged
η| < ηcut) in the “transverse” region as defined by the leading
particles (pT > 0.5 GeV/c, |η
charged particle, PTmax, averaged over all events with at least one particle in the
“transverse” region with pT > 0.5 GeV/c, |η
η| < ηcut.
Zero “Transverse” Charged Particles: If there are no charged particles in the “transverse”
region then Nchg and PTsum are zero and one includes these zeros in the average over all
η| < ηcut. However, if there are no
events with at least one particle with pT > 0.5 GeV/c, |η
charged particles in the “transverse” region then the event is not used in constructing the
“transverse” average pT.
ηcut = 0.8
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 19
New UE Observables
“transMAX” and “transMIN” Charged Particle Density: Number
PTmax Direction
of charged particles (pT > 0.5 GeV/c, |η
η| < 0.8) in the the maximum
∆φ
(minimum) of the two “transverse” regions as defined by the
leading charged particle, PTmax, divided by the area in η-φ
φ space,
“Toward”
2η
ηcut×2π
π/6, averaged over all events with at least one particle with
pT > 0.5 GeV/c, |η
η| < ηcut.
“TransMAX”
“TransMIN”
“transMAX” and “transMIN” Charged PTsum Density: Scalar pT
sum of charged particles (pT > 0.5 GeV/c, |η
η| < 0.8) in the the
“Away”
maximum (minimum) of the two “transverse” regions as defined
by the leading charged particle, PTmax, divided by the area in η-φ
φ
π/6, averaged over all events with at least one particle
space, 2η
ηcut×2π
with pT > 0.5 GeV/c, |η
η| < ηcut.
Note: The overall “transverse” density is equal to the average of the “transMAX” and
“TransMIN” densities. The “TransDIF” Density is the “transMAX” Density minus the
“transMIN” Density
“Transverse” Density = “transAVE” Density = (“transMAX” Density + “transMIN” Density)/2
“TransDIF” Density = “transMAX” Density - “transMIN” Density
ηcut = 0.8
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 20
“transMIN” & “transDIF”
The “toward” region contains the leading “jet”, while the “away”
region, on the average, contains the “away-side” “jet”. The
“transverse” region is perpendicular to the plane of the hard 2-to-2
scattering and is very sensitive to the “underlying event”. For
events with large initial or final-state radiation the “transMAX”
region defined contains the third jet while both the “transMAX”
and “transMIN” regions receive contributions from the MPI and
beam-beam remnants. Thus, the “transMIN” region is very
sensitive to the multiple parton interactions (MPI) and beam-beam
remnants (BBR), while the “transMAX” minus the “transMIN”
(i.e. “transDIF”) is very sensitive to initial-state radiation (ISR) Jet #3
and final-state radiation (FSR).
“TransMIN” density more sensitive to MPI & BBR.
PTmax Direction
“Toward-Side” Jet
∆φ
“Toward”
“TransMAX”
“TransMIN”
“Away”
“Away-Side” Jet
“TransDIF” density more sensitive to ISR & FSR.
0 ≤ “TransDIF” ≤ 2×”TransAVE”
“TransDIF” = “TransAVE” if “TransMIX” = 3×”TransMIN”
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 21
PTmax UE Data
CDF PTmax UE Analysis: “transMAX”, “transMIN”,
“transAVE”, and “transDIF” charged particle and PTsum
η| < 0.8) in proton-antiproton collisions
densities (pT > 0.5 GeV/c, |η
at 300 GeV, 900 GeV, and 1.96 TeV (R. Field analysis).
CMS PTmax UE Analysis: “transMAX”, “transMIN”,
“transAVE”, and “transDIF” charged particle and PTsum
densities (pT > 0.5 GeV/c, |η
η| < 0.8) in proton-proton collisions at
900 GeV and 7 TeV (M. Zakaria analysis). The “transMAX”,
“transMIN”, and “transDIF” are not yet approved so I can only
show “transAVE” which is approved.
PTmax Direction
∆φ
“Toward”
“TransMAX”
“TransMIN”
“Away”
CMS UE Tunes: PYTHIA 6.4 Tune Z1 (CTEQ5L) and PYTHIA
6.4 Tune Z2* (CTEQ6L). Both were tuned to the CMS leading
chgjet “transAVE” UE data at 900 GeV and 7 TeV.
PYTHIA 8: Some comparisons with PYTHIA 8 Tune 4C
(CTEQ6L), Richard Corke and Torbjörn Sjöstrand, JHEP
1103:032 (2011), arXiv:1011.1759.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 22
UE Common Plots
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
"Transverse" Charged PTsum Density: dPT/dη
ηdφ
φ
1.6
RDF Preliminary
RDF Preliminary
corrected data
corrected data
PTsum Density (GeV/c)
"Transverse" Charged Density
1.5
1.0
0.5
7 TeV
ATLAS (solid blue)
ALICE (open black)
1.2
0.8
7 TeV
0.4
ATLAS (solid blue)
ALICE (open black)
Charged Particles (|η
η| < 0.8, PT > 0.5 GeV/c)
0.0
0.0
0
5
10
15
20
25
30
0
5
10
PTmax (GeV/c)
"Transverse" Charged Particle Density: dN/dη
ηdφ
φ
0.8
corrected data
PTsum Density (GeV/c)
RDF Preliminary
corrected data
0.6
0.4
ATLAS (solid blue)
ALICE (open black)
20
25
30
"Transverse" Charged PTsum Density: dPT/dη
ηdφ
φ
RDF Preliminary
0.2
15
PTmax (GeV/c)
0.8
"Transverse" Charged Density
Charged Particles (|η
η| < 0.8, PT > 0.5 GeV/c)
900 GeV
0.6
0.4
0.2
0.0
900 GeV
ATLAS (solid blue)
ALICE (open black)
Charged Particles (|η
η| < 0.8, PT > 0.5 GeV/c)
Charged Particles (|η
η| < 0.8, PT > 0.5 GeV/c)
0.0
0
2
4
6
8
10
12
14
0
2
PTmax (GeV/c)
ISMD 2013 Chicago
September 17, 2013
4
6
8
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PTmax (GeV/c)
Rick Field – Florida/CDF/CMS
Page 23
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UE Common Plots
"Transverse"
ηη
dφ
φ
"Transverse"Charged
ChargedPTsum
PTsumDensity:
Density:dPT/dη
dPT/dη
dφ
φ
1.6
1.6
corrected
correcteddata
data
RDF
RDFPreliminary
Preliminary
PTsum Density (GeV/c)
PTsum Density (GeV/c)
"Transverse"Charged
ChargedDensity
Density
"Transverse"
ηηdφ
φφ
"Transverse"
"Transverse"Charged
ChargedParticle
ParticleDensity:
Density:dN/dη
dN/dη
dφ
1.5
1.5 RDF Preliminary
RDF Preliminary
corrected
data
corrected
data
1.2
1.2
1.0
1.0
0.8
0.8
0.5
0.5
CMS (solid red)
ATLAS
ATLAS(solid
(solidblue)
blue)
ALICE
ALICE(open
(openblack)
black)
55
CMS (solid red)
ATLAS
(solid
blue)
ATLAS
(solid
blue)
Charged Particles (|η
PTPT
> 0.5
GeV/c)
η|η<| 0.8,
< 0.8,
> 0.5
GeV/c)
ALICE
(open
black)
ALICE
(open
black) Charged Particles (|η
Charged
ηη| |<<0.8,
ChargedParticles
Particles(|η
(|η
0.8,PT
PT>>0.5
0.5GeV/c)
GeV/c)
0.0
0.0
00
7 7TeV
TeV
0.4
0.4
77TeV
TeV
10
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20
20
25
25
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30
0.0
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00
55
1010
0.8
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"Transverse" Charged Particle Density: dN/dη
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
ηdφ
φ
2525
3030
"Transverse"
ηηdφ
φφ
"Transverse"Charged
ChargedPTsum
PTsumDensity:
Density:dPT/dη
dPT/dη
dφ
0.8
0.8 RDF Preliminary
RDF Preliminary
RDF Preliminary
RDF Preliminary
corrected data
corrected data
0.6
0.6
corrected
correcteddata
data
0.6
0.6
0.4
0.4
0.4
0.4
0.2
0.2
0.0
0.0
2020
PTmax
PTmax(GeV/c)
(GeV/c)
PTsum Density (GeV/c)
PTsum Density (GeV/c)
"Transverse"Charged
ChargedDensity
Density
"Transverse"
PTmax
PTmax (GeV/c)
(GeV/c)
1515
0.2
0.2
CMS (solid red)
900 GeV
ATLAS (solid blue)
900 GeV
ATLAS (solid blue) Charged Particles (|η
η| < 0.8, PT > 0.5 GeV/c)
ALICE (open black)
Charged
Particles
(|η
η| < 0.8, PT > 0.5 GeV/c)
ALICE (open black)
0
0
2
2
4
4
6
6
8
8
10
10
12
12
14
14
0.0
0.0
00
CMS (solid red)
ATLAS
ATLAS(solid
(solidblue)
blue)
ALICE
ALICE(open
(openblack)
black)
22
PTmax (GeV/c)
PTmax (GeV/c)
ISMD 2013 Chicago
September 17, 2013
44
900
900GeV
GeV
Charged
|<
ηη
ChargedParticles
Particles(|η
(|η
| <0.8,
0.8,PT
PT>>0.5
0.5GeV/c)
GeV/c)
66
88
10
10
12
12
PTmax
PTmax (GeV/c)
(GeV/c)
Rick Field – Florida/CDF/CMS
Page 24
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14
UE Common Plots
"Transverse"
ηηη
dφ
φ
"Transverse"
"Transverse"Charged
Charged
ChargedPTsum
PTsum
PTsumDensity:
Density:
Density:dPT/dη
dPT/dη
dPT/dη
dφ
dφ
φφ
1.6
1.6
1.6
corrected
correcteddata
data
corrected
data
Tune Z1 generator level
RDF
RDFPreliminary
Preliminary
corrected
data
corrected
corrected
data
data
Tune Z1 generator level
PTsum Density
Density (GeV/c)
(GeV/c)
PTsum
PTsum Density
(GeV/c)
"Transverse"Charged
ChargedDensity
Density
"Transverse"
Charged
Density
"Transverse"
ηηdφ
φφ
"Transverse"
"Transverse"Charged
ChargedParticle
ParticleDensity:
Density:dN/dη
dN/dη
dφ
1.5
1.5 RDF Preliminary
RDF Preliminary
1.2
1.2
1.2
1.0
1.0
0.8
0.8
0.8
0.5
0.5
0.5
CMS
CMS(solid
(solidred)
red)
ATLAS
ATLAS
(solid
blue)
ATLAS(solid
(solidblue)
blue)
ALICE
ALICE
(open
black)
ALICE(open
(openblack)
black)
5
55
CMS
CMS(solid
(solidred)
red)
ATLAS
(solid
blue)
ATLAS
ATLAS
(solid
(solid
blue)
blue)
Charged
Particles
(|η
|η|<|<0.8,
PT
>>0.5
GeV/c)
η(|η
Charged
Particles
Particles
(|η
<0.8,
0.8,
PT
PT
>0.5
0.5
GeV/c)
GeV/c)
η
ALICE
(open
black)
ALICE
ALICE
(open
(open
black)
black) Charged
Charged
η
Charged
Particles
(|η
0.8,
PT
0.5
GeV/c)
ηη|| |<<<0.8,
ChargedParticles
Particles(|η
(|η
0.8,PT
PT>>>0.5
0.5GeV/c)
GeV/c)
0.0
0.0
0.0
0
00
777TeV
TeV
TeV
0.4
0.4
0.4
777TeV
TeV
TeV
10
10
10
15
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25
25
25
30
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30
0.0
0.0
0.0
000
555
10
10
10
0.8
0.8
0.8
0.6
0.6
0.6
"Transverse"
Charged Particle
Density: dN/dη
η
φφ
"Transverse"
ηηdφ
dφ
"Transverse" Charged
Charged Particle
Particle Density:
Density: dN/dη
dN/dη
dφ
φ
25
25
25
30
30
30
"Transverse"
ηηηdφ
φφφ
"Transverse"
Charged
PTsum
Density:
dPT/dη
dφ
"Transverse"Charged
ChargedPTsum
PTsumDensity:
Density:dPT/dη
dPT/dη
dφ
0.8
0.8
0.8 RDF Preliminary
RDF Preliminary
RDF
RDFPreliminary
Preliminary
RDF
Preliminary
corrected
correcteddata
data
corrected
data
Tune Z1 generator level
0.6
0.6
0.6
0.4
0.4
0.4
corrected
correcteddata
data
Tune Z1 generator level
0.4
0.4
0.4
0.2
0.2
0.2
0.0
0.0
0.0
20
20
20
PTmax
PTmax
PTmax(GeV/c)
(GeV/c)
(GeV/c)
PTsum Density
Density (GeV/c)
(GeV/c)
PTsum
PTsum
Density (GeV/c)
"Transverse"Charged
ChargedDensity
Density
"Transverse"
Charged
Density
"Transverse"
PTmax
PTmax
(GeV/c)
PTmax (GeV/c)
(GeV/c)
15
15
15
0.2
0.2
0.2
CMS
CMS (solid
(solid red)
red)
900
GeV
900
ATLAS
(solid
blue)
900 GeV
GeV
ATLAS
ATLAS (solid
(solid blue)
blue) Charged Particles (|η
|
<
0.8,
PT
> 0.5 GeV/c)
η
ALICE
(open
black)
Charged
Particles
(|η
PT
ηη|| << 0.8,
Charged
Particles
(|η
0.8,
PT >> 0.5
0.5 GeV/c)
GeV/c)
ALICE
(open
black)
ALICE (open black)
00
0
22
2
44
4
66
6
88
8
10
10
10
12
12
12
14
14
14
0.0
0.0
0.0
000
CMS
CMS(solid
(solidred)
red)
ATLAS
ATLAS
(solid
blue)
ATLAS(solid
(solidblue)
blue)
ALICE
ALICE
(open
black)
ALICE(open
(openblack)
black)
222
PTmax
(GeV/c)
PTmax
PTmax (GeV/c)
(GeV/c)
ISMD 2013 Chicago
September 17, 2013
444
900
900
GeV
900GeV
GeV
Charged
||<
ηηη
Charged
Particles
(|η
0.8,
PT
0.5
GeV/c)
ChargedParticles
Particles(|η
(|η
|<<0.8,
0.8,PT
PT>>>0.5
0.5GeV/c)
GeV/c)
666
888
10
10
10
12
12
12
PTmax
PTmax
(GeV/c)
PTmax (GeV/c)
(GeV/c)
Rick Field – Florida/CDF/CMS
Page 25
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14
14
LHC
CDF
CDF versus
versus CMS
ηdφ
φ
"TransAVE" Charged Particle Density: dN/dη
ηdφ
φ
"TransAVE" Charged PTsum Density: dPT/dη
0.75
0.78
RDF Preliminary
corrected data
CDF
PTsum Density (GeV/c)
Charged Particle Density
RDF Preliminary
0.50
0.25
CMS
900 GeV
CDF
corrected data
0.52
0.26
CMS
900 GeV
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.00
0.00
0
4
8
12
16
20
0
PTmax (GeV/c)
4
8
12
16
20
PTmax (GeV/c)
CDF and CMS data at 900 GeV/c on the
CDF and CMS data at 900 GeV/c on the
charged PTsum density in the “transverse”
charged particle density in the “transverse”
region as defined by the leading charged
region as defined by the leading charged
particle (PTmax) for charged particles with
particle (PTmax) for charged particles with
pT > 0.5 GeV/c and |η
η| < 0.8. The data are
η| < 0.8. The data are
pT > 0.5 GeV/c and |η
corrected to the particle level with errors
corrected to the particle level with errors
that include both the statistical error and
that include both the statistical error and
the systematic uncertainty.
the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 26
LHC
CDF
CDF versus
versus CMS
ηdφ
φ
"TransAVE" Charged Particle Density: dN/dη
ηηdφ
φφ
"TransAVE"
"TransAVE" Charged
Charged PTsum
PTsum Density:
Density: dPT/dη
dPT/dη
dφ
0.75
0.78
0.78
RDF
RDF Preliminary
Preliminary
corrected
corrected data
data
CDF
CDF
PTsum Density
Density (GeV/c)
(GeV/c)
PTsum
Charged Particle Density
RDF
RDF Preliminary
Preliminary
0.50
0.25
CMS
CMS
ATLAS
ALICE
900
900 GeV
GeV
0
4
8
12
16
CDF
CDF
ALICE
0.52
0.52
ATLAS
0.26
0.26
CMS
CMS
900
900 GeV
GeV
ChargedParticles
Particles(|η
PT>0.5
GeV/c)
η|<0.8,
Charged
|<0.8,
PT>0.5
GeV/c)
η(|η
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.00
corrected
corrected data
data
0.00
0.00
20
00
PTmax (GeV/c)
44
88
12
12
16
16
PTmax
PTmax (GeV/c)
(GeV/c)
CDF and CMS data at 900 GeV/c on the
CDF and CMS data at 900 GeV/c on the
charged PTsum density in the “transverse”
charged particle density in the “transverse”
region as defined by the leading charged
region as defined by the leading charged
particle (PTmax) for charged particles with
particle (PTmax) for charged particles with
pT > 0.5 GeV/c and |η
η| < 0.8. The data are
η| < 0.8. The data are
pT > 0.5 GeV/c and |η
corrected to the particle level with errors
corrected to the particle level with errors
that include both the statistical error and
that include both the statistical error and
the systematic uncertainty.
the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 27
20
20
“TransAVE” Density
ηdφ
φ
"Transverse" Charged PTsum Density: dPT/dη
ηdφ
φ
"TransAVE" Charged Particle Density: dN/dη
RDF Preliminary
Corrected Data
Generator Level Theory
1.5
RDF Preliminary
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
PTsum Density (GeV/c)
Charged Particle Density
1.5
7 TeV
1.0
1.96 TeV
900 GeV
0.5
300 GeV
7 TeV
Corrected Data
Generator Level Theory
1.0
1.96 TeV
900 GeV
0.5
300 GeV
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.0
0.0
0
5
10
15
20
25
30
0
5
10
15
20
25
30
PTmax (GeV/c)
PTmax (GeV/c)
Corrected CMS data at 7 TeV and CDF data Corrected CMS data at 7 TeV and CDF data
at 1.96 TeV, 900 GeV, and 300 GeV on the
at 1.96 TeV, 900 GeV, and 300 GeV on the
charged particle density in the “transAVE”
charged PTsum density in the “transAVE”
region as defined by the leading charged
region as defined by the leading charged
particle (PTmax) for charged particles with
particle (PTmax) for charged particles with
pT > 0.5 GeV/c and |η
η| < 0.8. The data are
pT > 0.5 GeV/c and |η
η| < 0.8. The data are
corrected to the particle level with errors that
corrected to the particle level with errors that
include both the statistical error and the
include both the statistical error and the
systematic uncertainty. The data are
systematic uncertainty. The data are
compared with PYTHIA Tune Z1 and Tune
compared with PYTHIA Tune Z1 and Tune
Z2*.
Z2*.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 28
“TransAVE” vs Ecm
ηdφ
φ
"TransAVE" Charged Particle Density: dN/dη
ηdφ
φ
"TransAVE" Charged PTsum Density: dPT/dη
1.1
Charged Particle Density
CMS solid dots
CDF solid squares
corrected data
generator level theory
0.8
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.5
5.0 < PTmax < 6.0 GeV/c
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.2
Charged PTsum Density (GeV/c)
1.1
RDF Preliminary
RDF Preliminary
CMS solid dots
CDF solid squares
corrected data
generator level theory
0.8
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.5
5.0 < PTmax < 6.0 GeV/c
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.2
0.1
1.0
10.0
0.1
Center-of-Mass Energy (GeV)
10.0
Center-of-Mass Energy (GeV)
Corrected CMS data at 900 GeV and 7 TeV
and CDF data at 1.96 TeV, 900 GeV, and
300 GeV on the charged particle density in
the “transAVE” region as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
ISMD 2013 Chicago
September 17, 2013
1.0
Corrected CMS data at 900 GeV and 7 TeV
and CDF data at 1.96 TeV, 900 GeV, and
300 GeV on the charged PTsum density in
the “transAVE” region as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
Rick Field – Florida/CDF/CMS
Page 29
“TransAVE” vs Ecm
ηdφ
φ
"TransAVE"
Charged
Particle
DensitydN/dη
Ratio
"TransAVE"
Charged
Particle
Density:
ηdφ
φ
"TransAVE"
Charged
PTsum
Density:
dPT/dη
"TransAVE"
Charged
PTsum
Density
Ratio
1.1
3.4
Charged
ParticleParticle
DensityDensity
Ratio
CMS
solid
dotsdots
CMS
solid
CDFCDF
solid
squares
solid
squares
corrected data
generator level theory
0.8
2.6
Tune Z2* (solid lines)
Tune
Z1 Z2*
(dashed
Tune
(solidlines)
lines)
Tune Z1 (dashed lines)
0.5
1.8
Divided by 300 GeV Value
5.0<<PTmax
PTmax<<6.0
6.0GeV/c
GeV/c
5.0
Charged
ηη|<0.8,
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
0.2
1.0
0.1
1.0
10.0
Charged
PTsum
Density
(GeV/c)
Particle
Density
Ratio
1.1
4.0
RDF Preliminary
RDF
RDF Preliminary
Preliminary
CMS solid dots
CMS solid dots
CDF solid squares
CDF solid squares
corrected data
corrected data
generator level theory
generator level theory
0.8
3.0
Tune Z2* (solid lines)
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
Tune Z1 (dashed lines)
0.5
2.0
5.0 < PTmax < 6.0 GeV/c
5.0 < PTmax < 6.0 GeV/c
Divided by 300 GeV Value
0.2
1.0
0.1
0.1
Center-of-Mass Energy (GeV)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
1.0
1.0
10.0
10.0
Center-of-Mass
Center-of-Mass Energy
Energy (GeV)
(GeV)
Corrected CMS data at 900 GeV and 7 TeV
and CDF data at 1.96 TeV, 900 GeV, and
300 GeV on the charged particle density in
the “transAVE” region as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
Corrected CMS data at 900 GeV and 7 TeV
and CDF data at 1.96 TeV, 900 GeV, and
300 GeV on the charged PTsum density in
the “transAVE” region as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
The data are “normalized” by dividing by the corresponding value at 300 GeV.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 30
“TransAVE” vs Ecm
ηdφ
φ
"TransAVE"
Charged
Particle
Density
Ratio
"TransAVE"
Charged
Particle
Density:
dN/dη
"TransAVE"
Charged
Particle
Density
Ratio
ηdφ
φ
"TransAVE"
Charged
PTsum
Density:
dPT/dη
"TransAVE"
Charged
PTsum
Density
Ratio
"TransAVE"
Charged
PTsum
Density
Ratio
1.1
3.4
4.3
Charged
ParticleParticle
DensityDensity
Ratio
Particle
Density
Ratio
CMS
solid
dotsdots
CMS
solid
CMS
CDF
solid
squares
CDF
CDF
solid
squares
corrected
corrected data
data
generator
generatorlevel
leveltheory
theory
0.8
2.6
3.2
Tune Z2* (solid lines)
TuneZ1
Z2*(dashed
(solid lines)
Tune
lines)
Tune
Z1 Z2*
(dashed
Tune
(solidlines)
lines)
Tune Z1 (dashed lines)
Divided by 300 GeV Value
0.5
1.8
2.1
Divided by 300 GeV Value
5.0
<PTmax
PTmax
<6.0
6.0
GeV/c
5.0
GeV/c
5.0
< <PTmax
< <6.0
GeV/c
Charged
|<0.8,
ηηη
ChargedParticles
Particles(|η
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charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
Corrected CMS data at 900 GeV and 7 TeV
and CDF data at 1.96 TeV, 900 GeV, and
300 GeV on the charged PTsum density in
the “transAVE” region as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
The data are “normalized” by dividing by the corresponding value at 300 GeV.
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MB versus the UE
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
0.6
CDF Preliminary
"Transverse" Charged Density
"Transverse" Charged Density
0.9
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
Corrected Data
0.6
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Overall density
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
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0.4
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Overall density
900 GeV
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.0
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0.4
"Transverse" Charged Density
Corrected CDF data on the charged particle
density, in the “transverse” region as
defined by the leading charged particle
(PTmax) for charged particles with pT > 0.5
GeV/c and |η
η| < 0.8. The data are corrected
to the particle level with errors that include
both the statistical error and the systematic
uncertainty and are compared with the
overall charged particle density (straight
lines).
CDF Preliminary
Corrected Data
0.2
Overall density
300 GeV
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.0
0
2
4
6
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PTmax (GeV/c)
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MB versus the UE
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"Transverse" Charged Particle Density: dN/dη
0.6
0.3
Overall density
0.0
5
10
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ηdφ
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"Transverse" Charged Particle Density: dN/dη
CMS Preliminary
Corrected Data
1.0
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0.5
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η|<0.8, PT>0.5 GeV/c)
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0.4
0.2
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Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
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15
20
PTmax (GeV/c)
25
30
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35
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5
10
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MB versus the UE
"Transverse" Charged
Charged Particle
Particle Density:
Density: dN/dη
dN/dη
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as defined by the leading charged particle
(PTmax) for charged particles with pT > 0.5
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center-of-mass energy (log scale).
ISMD 2013 Chicago
September 17, 2013
CMS
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squares
CMS
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Rick Field – Florida/CDF/CMS
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“Transverse”/Overall
2.5
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charged particle density ratio, in the
“transverse” region as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8. The ratio corresponds to the
“transverse” charged particle density
divided by the overall charged particle
density (Nchg ≥ 1).
ISMD 2013 Chicago
September 17, 2013
CMS red squares
CDF blue dots
Corrected CDF and CMS data on the
charged particle density ratio, in the
“transverse” region as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 for 5 < PTmax < 6 GeV/c. The ratio
corresponds to the “transverse” charged
particle density divided by the overall
charged particle density (Nchg ≥ 1). The data
are plotted versus the center-of-mass energy
(log scale).
Rick Field – Florida/CDF/CMS
Page 35
“Transverse”/Overall
RDF Preliminary
Corrected Data
7 TeV
2.0
1.5
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density (Nchg ≥ 1).
are plotted versus the center-of-mass energy
(log scale).
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Rick Field – Florida/CDF/CMS
Page 36
“Transverse”/Overall
RDF Preliminary
Corrected Data
7 TeV
2.0
1.5
300 GeV
1.0
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Charged Particle Density Ratio
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|η
η| < 0.8. The ratio corresponds to the
corresponds to the “transverse” charged
“transverse” charged particle density
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density (Nchg ≥ 1).
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“transMAX/MIN” NchgDen
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
1.2
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"Transverse" Charged Density
"Transverse" Charged Density
1.5
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Corrected CDF data at 1.96 TeV, 900 GeV,
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|η
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“transMAX/MIN” NchgDen
ηdφ
φ
"Transverse" Charged
Charged Particle Density:
Density: dN/dη
dN/dη
"Transverse"
ηdφ
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1.2
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0.0
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Generator Level Theory
900 GeV
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0.4
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Corrected CDF data at 1.96 TeV, 900 GeV,
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“transMIN” regions as defined by the
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charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8. The data are corrected to the
particle level with errors that include both
the statistical error and the systematic
uncertainty.
The data are compared with PYTHIA 6.4
Tune Z1 and Tune Z2*.
ISMD 2013 Chicago
September 17, 2013
12
PTmax (GeV/c)
CDF Preliminary
CDF Preliminary
300 GeV
Corrected Data
corrected data
Generator Level Theory
"TransMAX"
"TransMAX"
0.48
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.24
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Charged Particles
Particles (|η
(|η
|<0.8, PT>0.5
PT>0.5 GeV/c)
GeV/c)
Charged
ηη|<0.8,
0.00
0
Rick Field – Florida/CDF/CMS
2
4
6
8
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PTmax (GeV/c)
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“transDIF/AVE” NchgDen
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
0.9
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Corrected CDF data at 1.96 TeV, 900 GeV,
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density in the “transAVE” and “transDIF”
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η| < 0.8. The data
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“transDIF/AVE” NchgDen
η
φφ
"Transverse"
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Charged Particle
Particle Density:
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ISMD 2013 Chicago
September 17, 2013
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Preliminary
CDF
CorrectedData
Data
Corrected
Generator Level Theory
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0.4
"TransAVE"
0.2
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
300 GeV
Charged Particles (|η
η
η|<0.8, PT>0.5 GeV/c)
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1.96 TeV
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Charged Particle Density
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged particle
density in the “transMAX”, “transMIN”,
and “transDIF” regions as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8. The data are corrected to the
particle level with errors that include both
the statistical error and the systematic
uncertainty.
1.96 TeV
Corrected Data
0.6
900 GeV
0.4
300 GeV
0.2
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
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"TransMIN"
"TransMAX" Charged
Charged Particle
Particle Density:
Density: dN/dη
dN/dη
dφ
ηηdφ
φφ
"TransMAX"
0.39
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CDF
CDFPreliminary
Preliminary
1.96 TeV
Corrected Data
Corrected Data
Generator Level Teory
1.96 TeV
Charged
Charged Particle
Particle Density
Density
Charged Particle
Density
"TransMAX"
Charged
Density
1.2
1.2
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900 900
GeVGeV
300 GeV
0.4
0.4
300 GeV
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
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300 GeV
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Charged Particle
Particle Density:
Density: dN/dη
dN/dη
dφ
0.9
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CDF
CDFPreliminary
Preliminary
Charged Particle
Particle Density
Density
Charged
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged particle
density in the “transMAX”, “transMIN”,
and “transDIF” regions as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8. The data are corrected to the
particle level with errors that include both
the statistical error and the systematic
uncertainty.
The data are compared with PYTHIA 6.4
Tune Z1 and Tune Z2*.
ISMD 2013 Chicago
September 17, 2013
1.96 TeV
Corrected Data
Generator Level Theory
0.6
0.6
1.961.96
TeVTeV
Corrected
CorrectedData
Data
Generator Level Theory
900
GeV
900
GeV
0.4
300 GeV
300 GeV
0.3
0.2
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
Charged
|<0.8,
ηη
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
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1.2
1.5
Corrected Data
1.96 TeV
CDF Preliminary
"TransMAX"
Corrected Data
PTsum Density (GeV/c)
PTsum Density (GeV/c)
CDF Preliminary
1.0
0.5
"TransMIN"
900 GeV
"TransMAX"
0.8
0.4
"TransMIN"
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
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η|<0.8, PT>0.5 GeV/c)
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CDF Preliminary
300 GeV
Corrected Data
PTsum Density (GeV/c)
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum
density in the “transMAX” and
“transMIN” regions as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8. The data are corrected to the
particle level with errors that include both
the statistical error and the systematic
uncertainty.
"TransMAX"
0.48
0.24
"TransMIN"
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.00
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ηdφφ
"Transverse" Charged PTsum Density: dPT/dη
1.2
1.5
Corrected
CorrectedData
Data
Generator Level Theory
1.96 TeV
1.0
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.5
CDF
Preliminary
CDF
Preliminary
"TransMAX"
PTsum
PTsum Density
Density (GeV/c)
(GeV/c)
PTsum Density (GeV/c)
CDF
CDFPreliminary
Preliminary
"TransMIN"
Corrected
Data
Corrected
Data
Generator Level Theory
900 GeV
"TransMAX"
0.8
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.4
"TransMIN"
Charged Particles (|η
η |<0.8, PT>0.5 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
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φφ
"Transverse" Charged PTsum Density: dPT/dη
0.72
CDFPreliminary
Preliminary
CDF
PTsum Density
Density (GeV/c)
(GeV/c)
PTsum
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum
density in the “transMAX” and
“transMIN” regions as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8. The data are corrected to the
particle level with errors that include both
the statistical error and the systematic
uncertainty.
The data are compared with PYTHIA 6.4
Tune Z1 and Tune Z2*.
ISMD 2013 Chicago
September 17, 2013
12
300 GeV
CorrectedData
Data
Corrected
Generator Level Theory
"TransMAX"
0.48
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.24
"TransMIN"
Charged
ηη|<0.8,
Charged Particles
Particles (|η
(|η
|<0.8, PT>0.5
PT>0.5 GeV/c)
GeV/c)
0.00
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0.9
1.2
CDF Preliminary
Corrected Data
Corrected Data
PTsum Density (GeV/c)
PTsum Density (GeV/c)
CDF Preliminary
"TransDIF"
0.8
"TransAVE"
0.4
1.96 TeV
"TransDIF"
0.6
"TransAVE"
0.3
900 GeV
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
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"Transverse" Charged PTsum Density: dPT/dη
0.6
CDF Preliminary
PTsum Density (GeV/c)
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum
density in the “transAVE” and “transDIF”
regions as defined by the leading charged
particle (PTmax) for charged particles
with pT > 0.5 GeV/c and |η
η| < 0.8. The data
are corrected to the particle level with
errors that include both the statistical
error and the systematic uncertainty.
Corrected Data
"TransDIF"
0.4
"TransAVE"
0.2
300 GeV
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.0
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PTsum Density:
Density: dPT/dη
dPT/dη
dφ
ηηdφ
φφ
"Transverse" Charged
ηηdφ
φφ
"Transverse" Charged
Charged PTsum
PTsum Density:
Density: dPT/dη
dPT/dη
dφ
"Transverse"
0.9
0.9
1.2
1.2
CDF
CDFPreliminary
Preliminary
Corrected
Corrected Data
Data
Generator Level Theory
PTsum Density (GeV/c)
PTsum Density (GeV/c)
CDF Preliminary
"TransDIF"
"TransDIF"
0.8
0.8
"TransAVE"
"TransAVE"
0.4
0.4
Tune Z2* (solid lines)
1.96Z1TeV
Tune
(dashed lines)
1.96 TeV
Corrected
CorrectedData
Data
Generator Level Theory
"TransDIF"
"TransDIF"
0.6
0.6
"TransAVE"
"TransAVE"
0.3
0.3
Tune Z2* (solid lines)
900
Tune
Z1 GeV
(dashed lines)
900 GeV
Charged
ηη|<0.8,
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
Charged Particles
Particles (|η
(|η
|<0.8, PT>0.5
PT>0.5 GeV/c)
GeV/c)
Charged
ηη|<0.8,
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"Transverse" Charged PTsum Density: dPT/dη
0.6
CDF
CDFPreliminary
Preliminary
PTsum
PTsum Density
Density (GeV/c)
(GeV/c)
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum
density in the “transAVE” and “transDIF”
regions as defined by the leading charged
particle (PTmax) for charged particles
with pT > 0.5 GeV/c and |η
η| < 0.8. The data
are corrected to the particle level with
errors that include both the statistical
error and the systematic uncertainty.
The data are compared with PYTHIA 6.4
Tune Z1 and Tune Z2*.
ISMD 2013 Chicago
September 17, 2013
12
12
Corrected
CorrectedData
Data
Generator Level Theory
"TransDIF"
0.4
"TransAVE"
0.2
Tune Z2* (solid lines)
GeV lines)
Tune 300
Z1 (dashed
300 GeV
Charged Particles (|η
η |<0.8, PT>0.5 GeV/c)
0.0
0
2
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0.96
CDF Preliminary
CDF Preliminary
1.96 TeV
Corrected Data
Charged Particle Density
"TransMAX" Charged Density
1.2
0.8
900 GeV
0.4
300 GeV
Corrected Data
0.64
0.32
5.0 < PTmax < 6.0 GeV/c
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.0
0.00
0
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20
0.1
PTmax (GeV/c)
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged particle
density in the “transMAX” region as
defined by the leading charged particle
(PTmax) for charged particles with pT >
0.5 GeV/c and |η
η| < 0.8. The data are
corrected to the particle level with errors
that include both the statistical error and
the systematic uncertainty.
ISMD 2013 Chicago
September 17, 2013
1.0
10.0
Center-of-Mass Energy (GeV)
Corrected CDF data on the charged particle
density in the “transMAX” region as
defined by the leading charged particle
(PTmax) for charged particles with pT > 0.5
GeV/c and |η
η| < 0.8 with 5 < PTmax < 6
GeV/c. The data are plotted versus the
center-of-mass energy (log scale).
Rick Field – Florida/CDF/CMS
Page 48
“TransMAX/MIN” vs Ecm
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
ηdφ
φ
"Transverse" Charged PTsum Density: dPT/dη
1.8
Charged Particle Density
CDF Preliminary
CMS solid dots
CDF solid squares
corrected data
generator level theory
"TransMAX"
1.0
5.0 < PTmax < 6.0 GeV/c
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.5
"TransMIN"
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.0
0.1
1.0
Charged PTsum Density (GeV/c)
1.5
CDF Preliminary
1.2
"TransMAX"
5.0 < PTmax < 6.0 GeV/c
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.6
"TransMIN"
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.0
10.0
CMS solid dots
CDF solid squares
corrected data
generator level theory
0.1
Center-of-Mass Energy (GeV)
1.0
10.0
Center-of-Mass Energy (GeV)
Corrected CDF data at 1.96 TeV, 900 GeV,
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum density
and 300 GeV on the charged particle density
in the “transMAX”, and the “transMIN”,
in the “transMAX”, and the “transMIN”,
regions as defined by the leading charged
regions as defined by the leading charged
particle (PTmax) for charged particles with
particle (PTmax) for charged particles with
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
< 6 GeV/c. The data are plotted versus the
< 6 GeV/c. The data are plotted versus the
center-of-mass energy (log scale). The data
center-of-mass energy (log scale). The data
are compared with PYTHIA 6.4 Tune Z1
are compared with PYTHIA 6.4 Tune Z1
and Tune Z2*.
and Tune Z2*.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 49
“TransMAX/MIN” vs Ecm
"Transverse"
Charged
Particle
DensitydN/dη
Ratio
ηdφ
φ
"Transverse"
Charged
Particle
Density:
ηdφ
φ
"Transverse"
Charged
PTsum
Density:
dPT/dη
"Transverse"
Charged
PTsum
Density
Ratio
1.8
6.4
Charged
ParticleParticle
DensityDensity
Ratio
CDFPreliminary
Preliminary
CDF
CMS solid dots
CMS solid dots
CDF solid squares
CDF solid squares
correcteddata
data
corrected
generatorlevel
leveltheory
theory
generator
1.0
3.8
"TransMAX"
5.0<<PTmax
PTmax<<6.0
6.0GeV/c
GeV/c
5.0
"TransMIN"
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.5
2.4
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
"TransMIN"
Divided by 300 GeV Value
"TransMAX"
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
Charged
|<0.8,
ηη
0.0
1.0
0.1
1.0
10.0
Charged
PTsum
Density
(GeV/c)
Particle
Density
Ratio
1.5
5.2
CDF Preliminary
Preliminary
CDF
corrected data
corrected data
generator level theory
generator level theory
1.2
4.6
CMS
solid
dots
CMS
solid
dots
CDF
solid
squares
CDF
solid
squares
"TransMAX"
5.0 < PTmax < 6.0 GeV/c
5.0 < PTmax < 6.0 GeV/c
"TransMIN"
Tune Z2* (solid lines)
Tune
Z2* (solid
lines)
Tune
Z1 (dashed
lines)
Tune Z1 (dashed lines)
0.6
2.8
"TransMIN"
Divided by 300 GeV Value
0.0
1.0
0.1
0.1
Center-of-Mass Energy (GeV)
"TransMAX"
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
1.0
1.0
10.0
10.0
Center-of-Mass
Center-of-MassEnergy
Energy (GeV)
(GeV)
Corrected CDF data at 1.96 TeV, 900 GeV,
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum density
and 300 GeV on the charged particle density
in the “transMAX”, and the “transMIN”,
in the “transMAX”, and the “transMIN”,
regions as defined by the leading charged
regions as defined by the leading charged
particle (PTmax) for charged particles with
particle (PTmax) for charged particles with
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
< 6 GeV/c. The data are plotted versus the
< 6 GeV/c. The data are plotted versus the
center-of-mass energy (log scale). The data
center-of-mass energy (log scale). The data
are compared with PYTHIA 6.4 Tune Z1
are compared with PYTHIA 6.4 Tune Z1
and Tune Z2*.
and Tune Z2*.
The data are “normalized” by dividing by the corresponding value at 300 GeV.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 50
“TransMAX/MIN” vs Ecm
"Transverse"
Charged
Particle
Density
Ratio
ηdφ
φ
"Transverse"
Charged
Particle
Density:
"Transverse"
Charged
Particle
DensitydN/dη
Ratio
7.3
1.8
6.4
CDF
Preliminary
CDF
CDFPreliminary
Preliminary
CMS solid dots
CMS solid dots
CDF solid squares
CDF solid squares
corrected
data
corrected
data
corrected
data
generator
level
theory
generator
level
theory
generator
level
theory
1.0
3.8
4.8
5.0 < PTmax < 6.0 GeV/c
5.0<<PTmax
PTmax<<6.0
6.0GeV/c
GeV/c
5.0
Tune Z2* (solid lines)
Tune
(solidlines)
lines)
Tune
Z1Z2*
(dashed
Tune Z1 (dashed lines)
0.5
2.4
2.9
"TransMIN"
"TransMAX"
"TransMIN"
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
"TransMAX"
"TransMIN"
Divided by 300 GeV Value
Divided by 300 GeV Value
"TransMAX"
0.0
1.0
1.0
0.1
0.1
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
Charged
|<0.8,
ηη
1.0
1.0
10.0
10.0
100.0
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PTsum
Density
(GeV/c)
Particle
Density
Ratio
Particle
Density
Ratio
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ParticleParticle
DensityDensity
Ratio
Particle
Density
Ratio
1.5
5.2
6.7
"Transverse"
Charged
PTsum
Density
Ratio
ηdφ
φ
"Transverse"
Charged
PTsum
Density:
dPT/dη
CDF Preliminary
Preliminary
CDF
CMS
solid
dots
CMS
solid
dots
CMS
solid
dots
CDF
solid
squares
CDF
solid
squares
CDF
solid
squares
corrected data
data
corrected
generator level
level theory
theory
generator
5.2
1.2
4.6
"TransMIN"
"TransMAX"
5.0 < PTmax < 6.0 GeV/c
< PTmax
< 6.0
5.0 5.0
< PTmax
< 6.0
GeV/c
Tune Z2*GeV/c
(solid lines)
"TransMIN"
Tune
Z2* (solid
lines)
Tune
Z1 (dashed
lines)
"TransMAX"
Tune Z1
lines)
Divided
by(dashed
300 GeV
Value
3.1
0.6
2.8
"TransMIN"
Tune Z2* (solid lines)
"TransMAX"
Tune Z1 (dashed lines)
Divided by 300 GeV Value
1.0
0.0
0.1
0.1
Charged
ηη|<0.8,
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
1.0
1.0
1.0
10.0
100.0
10.0
10.0
Center-of-Mass
Energy
(GeV)
Center-of-Mass
Center-of-MassEnergy
Energy (GeV)
(GeV)
Center-of-Mass Energy (GeV)
Corrected CDF data at 1.96 TeV, 900 GeV,
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum density
and 300 GeV on the charged particle density
in the “transMAX”, and the “transMIN”,
in the “transMAX”, and the “transMIN”,
regions as defined by the leading charged
regions as defined by the leading charged
particle (PTmax) for charged particles with
particle (PTmax) for charged particles with
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
< 6 GeV/c. The data are plotted versus the
< 6 GeV/c. The data are plotted versus the
center-of-mass energy (log scale). The data
center-of-mass energy (log scale). The data
are compared with PYTHIA 6.4 Tune Z1
are compared with PYTHIA 6.4 Tune Z1
and Tune Z2*.
and Tune Z2*.
The data are “normalized” by dividing by the corresponding value at 300 GeV.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 51
“TransDIF/AVE” vs Ecm
ηdφ
φ
"Transverse" Charged PTsum Density: dPT/dη
ηdφ
φ
"Transverse" Charged Particle Density: dN/dη
1.1
Charged Particle Density
CDF Preliminary
CMS solid dots
CDF solid squares
corrected data
generator level theory
0.8
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
"TransDIF"
"TransAVE"
0.5
5.0 < PTmax < 6.0 GeV/c
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Charged PTsum Density (GeV/c)
1.1
CDF Preliminary
CMS solid dots
CDF solid squares
corrected data
generator level theory
0.8
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
"TransDIF"
"TransAVE"
0.5
5.0 < PTmax < 6.0 GeV/c
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.2
0.2
0.1
1.0
10.0
0.1
1.0
10.0
Center-of-Mass Energy (GeV)
Center-of-Mass Energy (GeV)
Corrected CDF data at 1.96 TeV, 900 GeV,
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum density
and 300 GeV on the charged particle density
in the “transAVE”, and the “transDIF”,
in the “transAVE”, and the “transDIF”,
regions as defined by the leading charged
regions as defined by the leading charged
particle (PTmax) for charged particles with
particle (PTmax) for charged particles with
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
< 6 GeV/c. The data are plotted versus the
< 6 GeV/c. The data are plotted versus the
center-of-mass energy (log scale). The data
center-of-mass energy (log scale). The data
are compared with PYTHIA 6.4 Tune Z1
are compared with PYTHIA 6.4 Tune Z1
and Tune Z2*.
and Tune Z2*.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 52
“TransDIF/AVE” vs Ecm
ηdφ
φ
"Transverse"
Charged
PTsum
Density:
dPT/dη
"Transverse"
Charged
PTsum
Density
Ratio
ηdφ
φ
"Transverse"
"Transverse"Charged
ChargedParticle
ParticleDensity:
DensitydN/dη
Ratio
1.1
4.0
CDF Preliminary
Preliminary
CDF
CMSCMS
solidsolid
dotsdots
squares
CDFCDF
solidsolid
squares
correcteddata
data
corrected
generatorlevel
leveltheory
theory
generator
0.8
2.6
"TransAVE"
5.0 < PTmax < 6.0 GeV/c
Tune Z2* (solid lines)
Tune
Z1Z2*
(dashed
Tune
(solid lines)
lines)
Tune Z1 (dashed lines)
"TransDIF"
"TransAVE"
0.5
1.8
Divided by 300 GeV Value
5.0 < PTmax
< 6.0 GeV/c
"TransDIF"
Charged Particles (|η
PT>0.5 GeV/c)
ηη|<0.8,
Charged Particles (|η
|<0.8, PT>0.5 GeV/c)
0.2
1.0
0.1
0.1
1.0
1.0
10.0
10.0
Particle
Density
Ratio
Charged
PTsum
Density
(GeV/c)
Particle Particle
Density Density
Ratio
Charged
1.1
3.4
CDF Preliminary
CDF Preliminary
CMS solid dots
CMS solid dots
CDF solid squares
CDF solid squares
corrected data
corrected data
generator level theory
generator level theory
0.8
3.0
Tune
Z2* (solid
lines)
5.0
< PTmax
< 6.0
GeV/c
"TransDIF"
Tune Z1 (dashed lines)
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
0.5
2.0
"TransAVE"
"TransAVE"
5.0 < PTmax <"TransDIF"
6.0 GeV/c
Divided by 300 GeV Value
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.2
1.0
0.1
1.0
10.0
Center-of-Mass Energy (GeV)
Center-of-Mass Energy
Energy (GeV)
(GeV)
Center-of-Mass
Corrected CDF data at 1.96 TeV, 900 GeV,
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum density
and 300 GeV on the charged particle density
in the “transAVE”, and the “transDIF”,
in the “transAVE”, and the “transDIF”,
regions as defined by the leading charged
regions as defined by the leading charged
particle (PTmax) for charged particles with
particle (PTmax) for charged particles with
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
< 6 GeV/c. The data are plotted versus the
< 6 GeV/c. The data are plotted versus the
center-of-mass energy (log scale). The data
center-of-mass energy (log scale). The data
are compared with PYTHIA 6.4 Tune Z1
are compared with PYTHIA 6.4 Tune Z1
and Tune Z2*.
and Tune Z2*.
The data are “normalized” by dividing by the corresponding value at 300 GeV.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 53
“TransDIF/AVE” vs Ecm
φ
"Transverse"
Charged
PTsum
Density:
dPT/dη
"Transverse"
Charged
PTsum
Density
Ratioηdφ
ηdφ
φ
"Transverse"
"Transverse"Charged
ChargedParticle
ParticleDensity:
DensitydN/dη
Ratio
1.1
4.0
CDFPreliminary
Preliminary
CDF
CMSCMS
solidsolid
dotsdots
CMS
solid
dots
squares
CDFCDF
solidsolid
squares
CDF
solid
squares
correcteddata
data
corrected
generatorlevel
leveltheory
theory
generator
0.8
2.6
3.0
"TransAVE"
"TransAVE"
5.0Tune
< PTmax
< 6.0lines)
GeV/c
Z2* (solid
Tune Z2* (solid lines)
Tune
Z1
(dashed
Tune
Z1Z2*
(dashed
lines)
Tune
(solidlines)
lines)
"TransDIF"
Tune Z1 (dashed lines)
"TransDIF"
"TransAVE"
0.5 Divided by 300 GeV Value
1.8
2.0
Divided by 300 GeV Value
0.2
1.0
0.1
0.1
5.0<<PTmax
PTmax
6.0GeV/c
GeV/c
5.0
<<6.0
"TransDIF"
Charged Particles (|η
PT>0.5 GeV/c)
η|<0.8,
Charged Particles
Particles (|η
(|η
|<0.8, PT>0.5
PT>0.5 GeV/c)
GeV/c)
Charged
ηη|<0.8,
1.0
1.0
1.0
10.0
10.0
10.0
100.0
Particle
Density
Ratio
Charged
PTsum
Density
(GeV/c)
Particle Particle
Density Density
Ratio
Charged
1.1
3.4
4.0
CDF Preliminary
CDF
CDF Preliminary
Preliminary
correcteddata
data
corrected
corrected data
generatorlevel
leveltheory
theory
generator
generator level theory
CMS
CMSsolid
soliddots
dots
CDF
solid
CDF solidsquares
squares
0.8
3.0
0.5
2.0
Tune Z2* (solid lines)
Tune
Z2* (solid
lines)
5.0
< PTmax
< 6.0
GeV/c
Tune Z1 (dashed lines)
Tune Z1 (dashed lines)
Tune Z2* (solid lines)
Tune Z1by
(dashed
lines)
Divided
300 GeV
Value
"TransDIF"
"TransDIF"
"TransAVE"
5.0 << PTmax
PTmax<<"TransDIF"
6.0GeV/c
GeV/c
5.0
6.0
Divided by 300 GeV Value
0.2
1.0
0.1
0.1
"TransAVE"
"TransAVE"
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
η|<0.8,
Charged
η(|η
Charged Particles
PT>0.5 GeV/c)
η|<0.8,
1.0
1.0
10.0
100.0
10.0
Center-of-Mass Energy
Energy (GeV)
(GeV)
Center-of-Mass
Center-of-MassEnergy
Energy (GeV)
(GeV)
Center-of-Mass
Energy
(GeV)
Center-of-Mass
Corrected CDF data at 1.96 TeV, 900 GeV,
Corrected CDF data at 1.96 TeV, 900 GeV,
and 300 GeV on the charged PTsum density
and 300 GeV on the charged particle density
in the “transAVE”, and the “transDIF”,
in the “transAVE”, and the “transDIF”,
regions as defined by the leading charged
regions as defined by the leading charged
particle (PTmax) for charged particles with
particle (PTmax) for charged particles with
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
pT > 0.5 GeV/c and |η
η| < 0.8 with 5 < PTmax
< 6 GeV/c. The data are plotted versus the
< 6 GeV/c. The data are plotted versus the
center-of-mass energy (log scale). The data
center-of-mass energy (log scale). The data
are compared with PYTHIA 6.4 Tune Z1
are compared with PYTHIA 6.4 Tune Z1
and Tune Z2*.
and Tune Z2*.
The data are “normalized” by dividing by the corresponding value at 300 GeV.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 54
“TransMIN/DIF” vs Ecm
"Transverse" Charged PTsum Density Ratio
"Transverse" Charged Particle Density Ratio
5.8
5.2
CDF Preliminary
CMS solid dots
CDF solid squares
corrected data
generator level theory
Particle Density Ratio
Particle Density Ratio
CDF Preliminary
3.8
5.0 < PTmax < 6.0 GeV/c
"TransMIN"
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
"TransDIF"
2.4
Divided by 300 GeV Value
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
1.0
0.1
1.0
10.0
CMS solid dots
CDF solid squares
corrected data
generator level theory
"TransMIN"
4.2
5.0 < PTmax < 6.0 GeV/c
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
2.6
"TransDIF"
Divided by 300 GeV Value
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
1.0
0.1
1.0
10.0
Center-of-Mass Energy (GeV)
Center-of-Mass Energy (GeV)
Ratio of CDF data at 1.96 TeV, 900 GeV,
and 300 GeV to the value at 300 GeV for the
charged particle density in the “transMIN”,
and “transDIF” regions as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
Ratio of CDF data at 1.96 TeV, 900 GeV,
and 300 GeV to the value at 300 GeV for the
charged PTsum density in the “transMIN”,
and “transDIF” regions as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
The data are “normalized” by dividing by the corresponding value at 300 GeV.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 55
“TransMIN/DIF” vs Ecm
"Transverse" Charged PTsum Density Ratio
"Transverse"
"Transverse" Charged
Charged Particle
Particle Density
Density Ratio
Ratio
7.3
5.8
6.7
5.2
corrected
corrected data
data
generator
generator level
level theory
theory
4.8
3.8
"TransMIN"
5.0
5.0 << PTmax
PTmax << 6.0
6.0 GeV/c
GeV/c
"TransMIN"
Tune Z2* (solid lines)
Tune Z1by
(dashed
lines)
Divided
300 GeV
Value
"TransDIF"
2.9
2.4
Divided by 300 GeV Value
1.0
1.0
0.1
0.1
"TransDIF"
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
1.0
1.0
CDF Preliminary
Preliminary
CMS solid dots
CDF solid squares
Tune Z2*
(solid
CMS
solidlines)
dots
Tune CDF
Z1 (dashed
lines)
solid squares
Particle Density
Density Ratio
Ratio
Particle
Particle Density Ratio
CDF
CDF Preliminary
Preliminary
10.0
100.0
10.0
CMS
CMS solid
solid dots
dots
CDF
CDFsolid
solidsquares
squares
corrected
corrected data
data
generator
generator level
level theory
theory
3.1
2.6
"TransMIN"
"TransMIN"
5.0 < PTmax < 6.0 GeV/c
5.2
4.2
5.0
< Z2*
PTmax
< 6.0
GeV/c
Tune
(solid
lines)
Tune Z1 (dashed lines)
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
"TransDIF"
"TransDIF"
Divided by 300 GeV Value
Divided by 300 GeV Value
Charged
ηη|<0.8,
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
1.0
1.0
0.1
0.1
1.0
1.0
10.0
100.0
10.0
Center-of-Mass
Center-of-Mass Energy
Energy (GeV)
(GeV)
Center-of-Mass
Center-of-Mass Energy
Energy (GeV)
(GeV)
Ratio of CDF data at 1.96 TeV, 900 GeV,
and 300 GeV to the value at 300 GeV for the
charged particle density in the “transMIN”,
and “transDIF” regions as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
Ratio of CDF data at 1.96 TeV, 900 GeV,
and 300 GeV to the value at 300 GeV for the
charged PTsum density in the “transMIN”,
and “transDIF” regions as defined by the
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
The data are “normalized” by dividing by the corresponding value at 300 GeV.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 56
“TransMIN/DIF” vs Ecm
"Transverse" Charged PTsum Density Ratio
"Transverse"
"Transverse" Charged
Charged Particle
Particle Density
Density Ratio
Ratio
7.3
5.8
6.7
5.2
corrected
corrected data
data
generator
generator level
level theory
theory
4.8
3.8
5.0
5.0 << PTmax
PTmax << 6.0
6.0 GeV/c
GeV/c
Tune Z2* (solid lines)
Tune Z1by
(dashed
lines)
Divided
300 GeV
Value
"TransMIN"
"TransMIN"
"TransDIF"
2.9
2.4
Divided by 300 GeV Value
CDF Preliminary
Preliminary
CMS solid dots
CDF solid squares
Tune Z2*
(solid
CMS
solidlines)
dots
Tune CDF
Z1 (dashed
lines)
solid squares
"TransDIF"
Particle Density
Density Ratio
Ratio
Particle
Particle Density Ratio
CDF
CDF Preliminary
Preliminary
corrected
corrected data
data
generator
generator level
level theory
theory
5.2
4.2
3.1
2.6
CMS
CMS solid
solid dots
dots
CDF
CDFsolid
solidsquares
squares
5.0 < PTmax < 6.0 GeV/c
"TransMIN"
"TransMIN"
5.0
< Z2*
PTmax
< 6.0
GeV/c
Tune
(solid
lines)
Tune Z1 (dashed lines)
Tune Z2* (solid lines)
Tune Z1 (dashed lines)
Divided by 300 GeV Value
Divided by 300 GeV Value
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
"TransDIF"
"TransDIF"
Charged
ηη|<0.8,
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
The
“transMIN”
(MPI-BBR 1.0
component) increases
1.0
0.1
1.0
10.0
100.0
1.0
10.0
100.0
0.1
1.0
10.0
1.0
10.0
much
faster
with
center-of-mass
energy
Center-of-Mass
Center-of-Mass
Center-of-Mass Energy
Energy (GeV)
(GeV)
Center-of-Mass Energy
Energy (GeV)
(GeV)
than the “transDIF” (ISR-FSR component)!
Ratio of CDF data at 1.96 TeV, 900 GeV, Duh!!
Ratio of CDF data at 1.96 TeV, 900 GeV,
and 300 GeV to the value at 300 GeV for the
and 300 GeV to the value at 300 GeV for the
charged particle density in the “transMIN”,
charged PTsum density in the “transMIN”,
and “transDIF” regions as defined by the
and “transDIF” regions as defined by the
leading charged particle (PTmax) for
leading charged particle (PTmax) for
charged particles with pT > 0.5 GeV/c and
charged particles with pT > 0.5 GeV/c and
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
|η
η| < 0.8 with 5 < PTmax < 6 GeV/c. The
data are plotted versus the center-of-mass
data are plotted versus the center-of-mass
energy (log scale). The data are compared
energy (log scale). The data are compared
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
with PYTHIA 6.4 Tune Z1 and Tune Z2*.
1.0
1.0
0.1
0.1
The data are “normalized” by dividing by the corresponding value at 300 GeV.
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 57
“Tevatron” to the LHC
"TransAVE" Charged Particle Density: dN/dη
ηdφ
φ
CMS
1.5
RDF Preliminary
13 TeV Predicted
Corrected Data
Tune Z2* Generator Level
Charged Particle Density
7 TeV
1.0
1.96 TeV
CDF
900 GeV
0.5
CDF
300 GeV
CDF
Tune Z2*
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
0.0
0
5
10
15
20
25
30
PTmax (GeV/c)
PYTHIA 8 Tune 4C (dashed lines) - Corke & Sjöstrand
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 58
“Tevatron” to the LHC
"TransAVE"
dN/dη
dφ
ηηdφ
φφ
"TransAVE" Charged Particle Density: dN/dη
CMS
1.5
RDFPreliminary
Preliminary
RDF
13 TeV Predicted
ChargedParticle
ParticleDensity
Density
Charged
Corrected
CorrectedData
Data
Generator
Level Theory
Tune Z2* Generator
Level
7 TeV
1.0
1.0
1.96 TeV
CDF
1.96
TeV
900 GeV
0.5
0.5
CDF
900 GeV
300 GeV
300 GeV
CDF
Tune Z2*
0.0
0.0
0
0
5
5
10
10
Tune Z2* (solid lines)
Tune 4C (dashed lines)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
15
15
20
20
25
25
30
30
PTmax
(GeV/c)
PTmax (GeV/c)
PYTHIA 8 Tune 4C (dashed lines) - Corke & Sjöstrand
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 59
“Tevatron” to the LHC
"Transverse" Charged PTsum Density: dPT/dη
ηdφ
φ
1.8
RDF Preliminary
PTsum Density (GeV/c)
Corrected Data
Tune Z2* Generator Level
CMS
13 TeV Predicted
7 TeV
1.2
CDF
1.96 TeV
0.6
900 GeV
300 GeV
Tune Z2*
0.0
0
5
10
CDF
CDF
Charged Particles (|η
η|<0.8, PT>0.5 GeV/c)
15
20
25
30
PTmax (GeV/c)
PYTHIA 8 Tune 4C (dashed lines) - Corke & Sjöstrand
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 60
“Tevatron” to the LHC
ηη
φφ
"TransAVE" Charged
dφ
"Transverse"
ChargedPTsum
PTsumDensity:
Density:dPT/dη
dPT/dη
dφ
1.8
1.8
RDF
RDFPreliminary
Preliminary
PTsum Density
Density (GeV/c)
PTsum
(GeV/c)
Corrected
Data
Corrected
Data
Generator
Level Theory
Tune Z2* Generator
Level
CMS
13
13 TeV
TeV Predicted
Predicted
77 TeV
TeV
1.2
1.2
CDF
1.96 TeV
TeV
1.96
0.6
0.6
900 GeV
GeV
900
300 GeV
GeV
300
Tune Z2*
0.0
0.0
00
55
10
10
CDF
Tune Z2* (solid lines)
CDF
Tune 4C (dashed lines)
ChargedParticles
Particles(|η
(|η
|<0.8,PT>0.5
PT>0.5GeV/c)
GeV/c)
Charged
ηη|<0.8,
15
15
20
20
25
25
30
30
PTmax (GeV/c)
(GeV/c)
PTmax
PYTHIA 8 Tune 4C (dashed lines) - Corke & Sjöstrand
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 61
Summary & Conclusions
The “transverse” density increases faster with center-of-mass energy
than the overall density (Nchg ≥ 1)! However, the “transverse” =
“transAVE” region is not a true measure of the energy dependence of
MPI since it receives large contributions from ISR and FSR.
The “transMIN” (MPI-BBR component) increases much faster with
center-of-mass energy than the “transDIF” (ISR-FSR component)!
Previously we only knew the energy dependence of “transAVE”.
We now have at lot of MB & UE data at
300 GeV, 900 GeV, 1.96 TeV, and 7 TeV!
We can study the energy dependence
more precisely than ever before!
Both PYTHIA 6.4 Tune Z1 (CTEQ5L) and PYTHIA 6.4 Tune Z2*
(CTEQ6L) go a fairly good job (although not perefct) in describing the
energy deperdence of the UE!
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 62
Summary & Conclusions
The “transverse” density increases faster with center-of-mass energy
than the overall density (Nchg ≥ 1)! However, the “transverse” =
“transAVE” region is not a true measure of the energy dependence of
MPI since it receives large contributions from ISR and FSR.
What wecomponent)
are learning
should
The “transMIN” (MPI-BBR
increases
much faster with
center-of-mass
energy
the “transDIF”
(ISR-FSR
allow
for than
a deeper
understanding
ofcomponent)!
MPI
Previously we only
knew will
the energy
of “transAVE”.
which
resultdependence
in more precise
atMB
the future
We now predictions
have at lot of
& UE data at
energy
13 TeV!
300 GeV, LHC
900 GeV,
1.96ofTeV,
and 7 TeV!
We can study the energy dependence
more precisely than ever before!
Both PYTHIA 6.4 Tune Z1 (CTEQ5L) and PYTHIA 6.4 Tune Z2*
(CTEQ6L) go a fairly good job (although not perefct) in describing the
energy deperdence of the UE!
ISMD 2013 Chicago
September 17, 2013
Rick Field – Florida/CDF/CMS
Page 63