Hadronic Physics
Intermediate Energies
Sevilla, 5 October 2012
Juan M Nieves
Hadron physics aims at understanding the properties of hadrons and their
mutual interactions from QCD (the theory governing the dynamics of quarks, the
constituents of hadrons). This is an ambitious goal and the field is
compartmented into several subfields that basically study the phases and
structures of QCD at their various levels of complexity.
MiniBooNE, Minerna
MAMI-Mainz, ELSA-Bonn
Typical topics in hadron physics:
Chiral Perturbation Theory
Effective Field Theory
Baryon Resonance Structure and Quark Models
Exotic Hadrons
Hadron Properties from Lattice QCD
Spectroscopy of light and heavy quark hadrons
Glueballs, hybrids and multiquarks
Hadrons in matter
Heavy ion collisions
The spanish theory groups have been and are very active in contributing
to the progress of Hadron physics. The groups are well integrated in
the international circuit, participating in the big european projects
(e.g. HadronPhysics) and providing support to the ongoing and future
experiments, with an especial focus to the FAIR physics program.
The experimental groups working on hadron physics projects are
very limited. However, many spanish citizens are involved in
experimental collaborations (MAINZ, GSI, CERN, …) and
could be the seed for an eventual growing of the experimental groups.
Activity integrated in
Hadron and Nuclear Physics group (UNIVERSITY OF BARCELONA)
permanent: Assumpta Parreño, Artur Polls, Àngels Ramos
other: Volodymyr Magas (RyC), Emmanuel Chang (postdoc), Estela Jiménez-Tejero (doc) , Axel.
Pérez-Obiol (doc)
 Hadron-Hadron interactions (with effective chiral lagrangians and lattice QCD
 Hadron spectroscopy (with light and heavy flavors)
 Hadron production with EM probes
 Hypernuclear physics
 Hadrons in the nuclear medium at finite temperature
 Relativistic Heavy Ion Collisions
ICE (CSIC), ICFO (Barcelona)
Groningen,GSI,Bergen,Kiev,Torino,USA (NPLQCD nodes), La Plata
(V.K. Magas, L. Roca)
Hadrons in the medium
Hartmann et al., PRC85 (12) 035206
η' N scattering at low energies and in-medium η' width
from γA->η'A' reactions
E. Oset and A. Ramos, Phys.Lett. B704 (2011) 334-342
M. Nanova et al, Phys.Lett. B710 (2012) 600-606
The in-medium Φ meson width has been studied
via proton induced Φ production in different nuclei
(C, Cu, Ag and Au) using
ANKE detector system at COSY
The η'N interaction is studied within a chiral unitary
approach, including the coupling of baryons to a singlet
SU(3) meson. Predictions are compared with a recent
measurement of the in-medium η' width by the
CBELSA/TAPS collaboration
Nuclear medium effects on the K* meson
The decay width of the K*ˉ vector meson in matter at
saturation density is five times
bigger than in free space. It could be studied from the
transparency ratio in the
γ A-> K+ K*ˉ A′ reactions
Charm mesons in nuclear matter
at finite temperature
L. Tolós, R. Molina, E. Oset, A. Ramos,
PRC82 (2010) 045210, NPA881 (2012) 169-177
The properties of open charm mesons,
D+, Dˉ, Ds+ and Dsˉ, in nuclear matter at
finite temperature for the conditions of PANDA and
[email protected] are studied within a coupled channels
C.E. Jimenez-Tejero, A. Ramos, L. Tolós, I. Vidaña, Phys.Rev.
C84 (2011) 015208
Weak |DS|=1 baryon-baryon interaction. Hypernuclear decay
Lowest-order contribution to the
weak LN → NN diagram
A. Pérez-Obiol, A. Parreño, B. Juliá-Díaz
Phys .Rev. C84 (2011) 024606
Resonance saturation for the L N → N N transition
The relative importance of the different exchange mechanisms included in the meson picture is extracted by means
of a comparison to the corresponding operational structures appearing in the effective field theory approach
Microscopic approach to the proton asymmetry in the nonmesonic weak decay of Λ-hypernuclei
The weak decay of polarized hypernuclei is
studied including 1-nucleon , 2-nucleon
induced decays and Final State Interactions
E. Bauer, G. Garbarino, A. Parreño and A. Ramos Phys.Rev.
C85 (2012) 024321
Effective Theories of the Strong Interactions. Applications to heavy quarkonium physics and to
QCD under extreme conditions.
Project: FPA2010-16963 (IFAE-UAB, IEEC-CSIC, UB)
permanent: Cristina Manuel (IEEC-CSIC), Antonio Pineda (IFAE,UAB) and
Joan Soto [PI] (UB), Nora Brambilla (TUM), Antonio Vairo (TUM)
other: Laura Tolos (RyC, IEEC-CSIC), Jaume Tarrus (postdoc, UB), Miguel Ángel Escobedo (postdoc,
TUM), Maximilian Stahlhofen (doc, UWien), Olena Romanets (doc, KVI), Eduard Bosch (doc,UBUniv.Frankfurt)
Heavy Quarkonium
 QCD at finite temperature and/or density
 Non-relativistic effective theories for nucleons and pions
 Quark-hadron duality in EFTs
 EFT for strongly coupled superfluids
INFN(Gran Sasso), Univ. Frankfurt, FIAS, Univ. Granada, Univ. Barcelona, IFIC/Univ. Valencia, Univ.
Groningen, Univ. Regensburg,..
Framework and Scientific Goals
QCD, the current theory of strong interactions
Related to experiments at CERN (LHCb, ALICE),
Brookhaven (RHIC), KEK (Belle) and
GSI (PANDA and CBM at FAIR), among others
Effective Field Theories (EFT)
• Heavy Quarkonium
• QCD at finite temperature and/or density
• Nucleons and pions
• Superfluids
Summary of Activities
Heavy Quarkonium
“Effective field theory for ultrasoft momenta in NRQCD and NRQED”,
Pineda and Soto, Nucl. Phys. Proc.Suppl.64: 428-432, 1998
“Effective field theories for heavy quarkonium”, Brambilla, Pineda, Soto and Vairo, Rev.Mod.Phys.77: 1423, 2005
• Perturbative calculations in pNRQCD
• Non-perturbative calculations in pNRQCD
• Production in NRQCD
QCD at finite temperature and/or density
“Semiclassical transport theory for nonAbelian plasmas”, Litim and Manuel, Phys.Rept.364: 451-539, 2002
“Mutual friction in a cold color flavor locked superfluid and r-mode instabilities in compact stars,
Mannarelli, Manuel and Sa’d, Phys.Rev.Lett.101: 241101, 2008.
“Charmed and strange baryon resonances with heavy-quark spin symmetry”, Romanets, Tolos, Garcia-Recio, Nieves, Salcedo and Timmermans,
Phys.Rev.D 85: 114032, 2012
Finite Temperature:
 Description of the matter
created in Heavy-Ion Collisions
 Renormalization Group at finite temperature
 Heavy Quarkonium in the quark-gluon plasma
Finite Density:
 Quark Matter
 Charm and Charmonium
 Strangeness
 Physics of compact stars
Non-relativistic effective theories for nucleons and pions
“Effective Field Theory with Dibaryon Fields: Nucleon-Nucleon amplitudes at NNL”,
Soto and Tarrus, Phys.Rev.C81: 014005, 2010.
Quark-hadron duality in EFTs
“Deep inelastic scattering and factorization in the ’t Hooft Model”,
Mondejar and Pineda, Phys.Rev.D79 :085011,2009.
Superfluids: EFT for strongly coupled superfluids
“Shear viscosity due to phonons in superfluid neutron stars”, Manuel and Tolos, Phys.Rev. D 84: 123007, 2011
“Shear viscosity in a superfluid cold Fermi gas at unitarity”, Mannarelli, Manuel and Tolos, arXiv:1201.4006
“Bulk viscosities for cold Fermi superfluids close to the unitary limit”,
Escobedo, Mannarelli and Manuel, Phys.Rev.A79: 063623, 2009.
“Effective field theory and dispersion law of the phonons of a non-relativistic superfluid”,
Escobedo and Manuel, Phys. Rev. A 8: 023614, 2010
Our aim is to study different issues of current interest in heavy quarkonium physics
and in QCD at finite temperature and/or density, together with applying EFT
techniques for strongly interacting systems such as nucleons and pions, and
Nuclear and Hadron Physics at Intermediate Energies (UNIVERSITY OF SEVILLA)
permanent: J.A. Caballero
other: R. González (doc)
 Lepton nucleus scattering (scaling, meson-exchange currents…)
 Nucleon form factors and medium effects
Madrid, Granada, Torino, Pavia, Lecce, Sofia, MIT
Electroweak Reactions at Intermediate Energies
Beyond the Impulse Approximation: MEC, 2p-2h contributions, …
Electron scattering on few-body systems: 3-He, 4-He
Relativistic analyses of electron & neutrino scattering reactions
Scaling phenomenon in lepton scattering
Parity violation in electron scattering: strangeness in the nucleon
MiniBooNE Collaboration,…
Colaboración con UCM y UGR
Universality of the scaling function: it
can be used to predict neutrino-nucleus
cross sections.
Essential to analyze neutrino
oscillations: MiniBooNE, Minos, K2K.
Nuclear and Hadronic physics at intermediate energies
permanent: E. Amaro, C. García-Recio, J. E. Romera,
E. Ruiz-Arriola, L.L. Salcedo
other: Rodrigo Navarro (doc), Ignacio Ruiz-Simo (posdoct)
 Hadron-Hadron interactions (chiral symmetry, non-perturbative metods…)
 QCD effective action and chiral quark models
 Hadronic systems in a dense medium at finite temperature
 Dispersion of electroweak probes off nuclei (hadron production or quasielastic
 Hypernuclear physics
 Non-linear quantum dynamics in atoms, molecules and nuclei
Valencia, Salamanca, UCMadrid, Barcelona, Sevilla, Cracow,Torino,Jülich, Bonn, Frankfurt,
MIT, Ohio, BNL, Idaho
D-nucleus bound states,
C. García-Recio, J. Nieves, L.L. Salcedo
and L. Tólos, PRC 85, 025203 (2012)
Nuclear Physics Group GFN-UCM
(Complutense University Madrid)
Permanent: E. Moya de Guerra, J. Retamosa, J.M. Udías
Postdocs: C. Fernández-Ramírez (JdlC), A. Relaño (Lecturer), L. Muñoz (Assistant
Lecturer), O. Moreno (Assistant Lecturer)
 Nuclear
effects in neutrino-nucleus interactions at intermediate
 Spectral fluctuations of the hadronic mass spectra
 Pion production with EM probes
 Structure of the nucleons: strange content, form factors
Main Collaborations:
Sevilla, Granada, MIT, Torino, JLab, Mainz
Electron scattering of nucleons bound on nuclei
Experimental study performed at JLAB and MAMI in order to identify possible modifications of the nucleon structure
inside the nuclei. UCM contribution: development and extension of a realistic relativistic modeling of the reaction,
incorporating it into the MC tool and making possible the data analysis
ratio of GE/GM form factors in bound nucleons, Data from JLAB and MAMI, FSI are constrained by induced
polarization measurement
Data suggests the pressence of mild medium modifications of the form factors, like the ones implied in QMC model
Several publications co-authored with the Hall A collaboration of JLAB, about polarization
transfer in the 4He((e,e 'p)3H reaction, PRL106, (2011) 052501, PRL 105, 072001 (2010), PRL
91, 052301 (2003)
• Chaos in hadrons: Application of spectral statistical
techniques inherited from Quantum Chaos to the
experimental meson and baryon spectra. Both meson
and baryon spectrum happen to be chaotic [PRL 98,
062001 (2007); PLB 710, 139 (2012)], incompatible
with most theoretical approaches which provide
integrable spectra. Meson model by Vijande et al.
JPG 31, 481 (2005) is the only one with spectralstatistic properties close to the experimental spectrum.
• Photoproduction of pions in the resonance region
and on nuclei: Ann. Phys. 321, 1408 (2006); PLB
664, 57 (2008); PRC 77, 065212 (2008); PLB 660,
188 (2008)
• Near threshold pion photoproduction: Accurate
test of chiral symmetry: Working on both the
experimental (A2 and CB-TAPS collaborations at
Mainz) and theoretical sides,
PLB 679, 41 (2009); PRC 80, 065201 (2009)
Effective Theories in Modern Physics
Dept. Theoretical Physics I & II)
permanent: A. Dobado, F.J. Llanes-Estrada, A. Gómez-Nicola, J.R. Peláez
other: D. Cabrera (posdoct), I. Scimeni (RyC), J. Nebreda (recent doc), G.Rios (recent doc),
J. Torres-Rincón (recent doc), J. Ruiz de Elvira (doc), R. Torres Andres (doc), M. Echevarria
(doc), O. Pavlova (doc)
 Efective Field Theories (ChPT and SCET)
 Hadron-Hadron Interactions, hadron spectroscopy, structure and decays (light and
 Structure of matter in neutron stars
 Hadrons in the nuclear medium at finite temperature and Relativistic Heavy-Ion
Grants during 2012: Spanish-FPA (2 coordinated projects), Hadron Physicss2 (European-FP7)
CPAN (High energy physics school), Exchange with GSI (theory support to ALICE)
Topic: Precise ππ scattering from data and dispersion relations
Precise determination of f0(500)/σ and f0(980) resonance parameters
R. Garcia-Martin , R. Kaminski, J.R.Pelaez, J. Ruiz de Elvira, PRL107, 072001(2011).
García Martín, Kaminski, J.R.Pelaez, Yndurain PRD83,074004 (2011)
PDG 2012
Significant impact in
factor of 5 improvement
of sigma meson uncertainty
@ PDG 2012
Topic: TMD phenomenology. Proper definition of polarized
and unpolarized TMDs on-the-light-cone. kT-factorization.
Model-independent and universal evolution. Soft-Collinear
Effective Theory.
* “Model-Independent Evolution of Transverse Momentum Dependent
Distribution Functions (TMDs) at NNLL”. M. G. Echevarría, A. Idilbi, A.
Schäfer, I. Scimemi [hep-ph/1208.1281]
* “Factorization Theorem for Drell-Yan At Low q_T and Transverse
Momentum Distributions On-The-Light-Cone”. M. G. Echevarría, A. Idilbi, I.
Scimemi JHEP 1207 (2012) 002
Topic: Strong correlation between bulk viscosity
and trace anomaly established within effective
No Unit. c2s = O(T 8 )
Unit.c2s = O(T 6 )
Unit.c2s = O(T 8 )
m¼ = 0
* A.Gómez Nicola, D.Fernández-Fraile,PRL.102:121601,2009
Nuclear Theory and Particle Physics group
Permanent: J.A.Oller, L.Roca
Other: K.Glampedakis (RyC), Z.-H.Guo (post-doc CPAN), G. Ríos (post-doc Ministerio),
M. Albaladejo (doc)
Scattering of unstable particles in a finite volume L.Roca, E.Oset
Hadronic particles made of multi-r(770) mesons. L.Roca, E.Oset, J.Yamagata
 Experimental measurement of the f(1020) meson width in the nuclear medium
(L.Roca in collaboration with [email protected]ülich)
Pseudotensor mesons as three-body resonances. L.Roca
Valencia, Barcelona, Jülich, ...
One of the 2++ pseudotensor resonances dynamicaly generated
with a three body interaction (PVV)
Gravitational wave emission from “mountains” in neutron stars with a color
superconducting quark matter core. K. Glampedakis, D.I. Jones, L. Samuelsson
The impact of an effective (entrained) neutron mass on pulsar glitch physics.,
 N. Andersson, K. Glampedakis, W.C.G. Ho, C.M. Espinoza.
Southampton, Tübingen, Stockholm
Meson-meson scattering in U(3) ChPT: Large Nc, Spectral function sum rules and
semilocal duality. Relation between the scalar, vector and pseudoscalar spectra Z.-H.
Guo , J.A.Oller
 Size of the σ and its nature M.Albaladejo,J.A.Oller
Nucleon-nucleon interactions from Chiral Perturbation Theory and dispersion relations.
The N/D Method M.Albaladejo, Z.-H.Guo, J.A.Oller, G. Ríos
 pN scattering in Covariant Chiral Perturbation Theory. pN sigma term and the
strangeness content of the nucleon. J.M. Alarcón, J. Martín Camalich, L.S.Geng, J.A.
Oller, L. Alvarez-Ruso
Finite volume effects in pp scattering a phaseshit extraction from LQCD J.M.Albaladejo,
G. Ríos, E. Oset, J.A.Oller, G. Ríos
Chiral Perturbation Theory in the Nuclear Medium. Upper limit on neutron star masses.
A.Dobado, F.J.Llanes, J.A.Oller
Pseudoscalar resonances as dynamically generated from the interactions between the
lightest scalar resonances and pseudoscalar mesons. M.Albaladejo, J.A.Oller,L.Roca
New vector resonances from the interactions between the lightest scalar and vector
resonances L.Alvarez-Ruso, J.M.Alarcón, J.A.Oller
KbarN Interactions in coupled channels revisited. Z.-H.Guo,, J.A.Oller
Sussex, Mainz, IFIC, Beijing, Madrid
Nuclear Physics group
permanent: F. Fernández, E. Hernández, D. Rodríguez-Entem, A. Valcarce, T. Fernández-
other: C. Albertus (JdC), Pablo García (recent doc), Jorge Segovia (recent doc)
 Baryon-Baryon interactions (from quark model and effective theories)
 Hadron spectroscopy
 Electroweak processes with hadrons
 p production in neutrino-nucleon and neutrino-nucleus reactions
Granada, Valencia, Madrid, Grenoble, Jerusalem, Mexico, Seattle
HADRON SPECTROSCOPY: Quark Models versus Dynamical models
Quark Models: Mesons =
Baryons =
Valencia, Salamanca
Dynamical Models: Mesons =
Baryons =
generated from unitary (non-perturbative) extensions of chiral perturbation
theory in coupled channels
Barcelona, Granada, Murcia, Valencia
 As a result, it is found that some of the observed resonances are
generated dynamically through the multiple scattering of meson-meson (or
baryon-meson) pairs in coupled channels. Their properties might be very
different from the Quark Model predictions.
The constituent quark model
Quark Models:
Many of the observed resonances fall within the quark model predictions
A. Valcarce, H. Garcilazo, F. Fernández and P. González, Rept. Prog. Phys. 68, 965 (2005)
The quark model also predicts other baryon properties. Form factors, decay
widths of simple and doubly heavy hadrons,
C. Albertus, E. Hernández, J. Nieves, Phys. Rev. D85 (2012) 084035; Phys. Lett. B704 (2011) 499, etc…
But… some anomalies:
Dynamical Models: an example  The L(1405)
chiral lagrangian
Vil Gl Tlj
in coupled chanels
generates the L(1405) located 27 MeV
below the K-p threshold
E. Oset and A. Ramos, Nucl. Phys. A635 (1998) 99
Several groups are extending their models to the charm degree of
freedom to interpret the data from BELLE, BABAR, BES, CLEO …
but also in preparation for the forthcoming experiments at FAIR that will
be sensitive to the in-medium properties of hadrons with charm.
Valencia  dynamically generated open charm and hidden charm
Barcelona meson resonances from meson-meson coupled channel dynamics
UB, UAB  dynamically generated charmed baryon resonances within
a SU(4) model  D-meson properties in hot and dense medium
Granada  dynamically generated charmed baryon resonances within
a SU(8) model (accounts for heavy-quark spin symmetry)
Salamanca  quark model charmed baryon and meson resonances
D N molecule
No charged partner
Hadron and Nuclear theory group
permanent: E. Oset, M. J. Vicente-Vacas, J. Nieves
other: L. Alvarez-Ruso (RyC), A. Ozpineci (sab), M. Pavón (pdoc), T. Ledwig (pdoc),
M.Bayar (pdoc), J. Garzón (doc), F. Aceti (doc), En Wang (doc), C. Hidalgo (doc),
C.W. Xiao (doc)
 Dynamically generated three-hadron resonances (mostly involving charm dynamics)
 Finite volume treatment of scattering of hadrons and limits to phase shifts extraction
from lattice QCD
 Hadron properties (spectroscopy, magnetic moments, form factors)
 Hadrons in nuclei
 Pion production and neutrino-nucleon and neutrino-nucleus reactions
 Chiral perturbation theory with D states
 Heavy quark spin symmetry
Granada, Murcia, Salamanca, Barcelona, Madrid, Osaka, Beijing, Jülich, Nara, Kyoto…
Dynamical models: Heavy Quark Spin Symmetry / SU(4) Hidden Gauge
D. Gamermann, J. Nieves, E. Oset and E. Ruiz-Arriola, Phys. Rev. D81 (2010) 014029;
J. Nieves and M. Pavón-Valderrama, Phys. Rev. D86 (2012) 056004
• Prediction of Heavy quark spin symmetry partners of the X(3872)
• DD ,
DD* cc, D*D* molecules
X(3720) and X(3872) resonances +… (Hidden charm)
Isospin violation in the X(3872) (JPC=1++) decays to J/Y r and J/Y w
• X(3872) is not purely an I=0 state or
• Transition operator violates isospin or both!
Isospin violations in X(3872) decays…
Because of the mass differences D0
D- and D*0
D*- the kinetic energy
(including the mass terms) does not conmute with isospin, the X(3872) is an
admixture of isospin I=0 and I=1 (r is the DD* relative distance in the molecule X)
X (3872)
neu (r) (r)
neu: D0 D*0 + cc and ch: D+ D* + cc
neu (r) (r)
| I  0 
| I 1
(neutral and charged thresholds differ in 8 MeV)
Assuming a contact interaction ….
(0) (0)
B( X  J /r)  neu
B( X  J /w) 
(0) (0)
D. Gammermann, E. Oset Phys. Rev. D80
(2009) 014003; D. Gammermann, J.
Nieves, E. Oset and E. Ruiz-Arriola, Rev.
D81 (2010) 014029.
this ratio can be
understood !
microscopial evaluation of 2p2h contributions
I. Ruiz-Simò (UGR), M.J. Vicente-Vacas,
F. Sánchez (IFAE) & J. Nieves (IFIC)
Electroweak Nuclear Reactions at Intermediate Energies
New developments in Baryon cPT:
 use EOMS renormalization scheme: covariant and preserves analytical properties
 Baryon masses and magnetic moments
(clear improvement SU(3)
Coleman-Glashow description)
J.M. Camalich, L.S. Geng and M.J. Vicente-Vacas,
PRL 101 (2008) 222002; PLB676 (2009) 63; PRD82 (2010) 074504
 Hyperon semileptonic decays
(SU(3) breaking corrections, determine Vus
and competitive with other methods: kaon and
tau decays)
L.S. Geng, J.M. Camalich and M.J. Vicente-Vacas,
PRD 79 (2009) 094022
of EPS
Jorge Martín-Camalich
(supervised by Manuel Vicente Vacas)
Hadron Physics and Quark Model group
permanent: P. González, S. Noguera, V. Vento, J. Vijande
 Non-local chiral Lagrangians
 Hadron spectroscopy
 Deep inelastic scattering (GPD, TDA)
 Deconfinenemnt
 Glueballs
Salamanca, Peruggia, Tandar (Buenos Aires), La Plata, Dubna
Non Perturbative OGE Potential from SDE (P. González, V. Vento, V. Mathieu) Phys. Rev. D84,
114008 (2011)
A QFT is completely characterized by its Green functions which are governed by SDE.
One Gluon Exchange (OGE) Potential:
The coupling depends on the gluon mass
The resulting potential looks like a screened Cornell potential improving the fit to
heavy quarkonia masses beyond 1 GeV excitation energy.
Pion transition form factor (S. Noguera,
Vicente Vento)
The EMC effect: local nuclear dynamics
or quark-gluon dynamics? Vicente Vento
Too many X’s, Y’s and Z’s?
J. Vijande
T.F.C., A.V., J.V., Phys. Lett. B 709, 358 (2012)
Hidden flavor
There should not be a
partner of the
X(3872) in the
bottom sector
Explicit flavor
There should be a
JP=1+ bound state in
the exotic bottom
LHCpheno group
(Instituto de Física Corpuscular, IFIC, Valencia)
Members of the intermediate energy region subgroup:
Permanent: A. Pich, J. Portolés
P. Ruiz Femenía (post-doc CPAN), O. Shekhovtsova (Marie Curie postdoc), I. Rosell (external member),
Jie Lu (postdoc), A. Filipuzzi (doc) , A. Celis (doc), A. Lami (doc.), V. Ilisie (doc.), C. Koren (doc),
M. Zahiri-Abyaneh (doc)
 New Physics in decays of the B and D mesons
 Kaon physics
 Lepton Flavour Violation processes
 Hadronic decays of the tau lepton
 Hadronic form factors of QCD currents at NLO in the 1/Nc expansion
 Determination of low-energy constants in Chiral Perturbation Theory
 Violation of universality by the third lepton family
 Resonance Chiral Theory
 Application of low-energy hadron physics techniques to a possible new strong
sector in the 1 TeV energy region
U. Mainz, Los Alamos National Laboratory, U. Dortmund, Technische Univesität Munich,
INFN Bari, U. Krakov, U. Winsconsin at Madison, U. Cardenal Herrera (CEU).
Outlook on Kaon Decays
Low-energy dominated
High-energy dominated
V. Cirigliano, G. Ecker, H. Neufeld, A. Pich,
Kaon Decays in the Standard Model,
Reviews of Modern Physics, 84 (2012) 399
State of the art
Chiral Perturbation Theory framework
Up to O(p4) 
Dominating O(p6) contributions 
[D. Gómez Dumm et al, Phys. Lett. B685 (2010) 158]
Lattice QCD (UAM-IFIC)
permanent: P. Hernández (IFIC-UV), C. Pena (UAM & IFT-UAM/CSIC)
other: G.Herdoíza (posdoct, Madrid) , L. Keegan (posdoct, Madrid), E. Kerrane
(posdoct, Madrid), G.Vulvert (posdoct, Valencia), E. Endress (doc, Madrid),
 Light hadron physics: determination of effective pion and kaon couplings
Flavour phenomenology: study of kaon non-hadronic decay
 Quantum field theory: mixed-action lattice regularisations of QCD, mixed –
regime Chiral Perturbation Theory
 Computational physics: ab initio computations in QCD with physical light
quark masses
Mainz, DESY-Zeuthen, INFN Rome ‘Tor Vergata’
José Díaz
Juan Garzón
(University of Valencia-IFIC)
(University of Santiago)
No supported by Plan
Nacional I+D+i
C. Pajares,
N. Armesto,
E. G. Ferreiro
C. M. Merino
(University of Santiago)
HADES programme (so far)
• e+e- production in N+N – reference reactions for A+A
• pp reactions
• single and double p production (barion resonances in N+N)
(1.25, 2.2, 3.5 GeV)
• , w, f production- hadr.channels and rear > e+e- decays (new UL in
dp reactions
• L(1405) , (1385) (new PDG entry)
(1.25 GeV)
• K0 production
• nucleus + nucleus
C+C, Ar+KCl
Au+Au (2012)
low mas e+e- „excess” : (DLS puzzle, emissivity,..)
kaon production : K0s
Hyperon production; L,  ,  (1321)
f production
L-p, p-p, pp, correlations
r/w mesons in cold nuclear matter
• strangeness production K, f
• p + nucleus
(Nb @ 3.5 GeV)
Low mass e+e- excess : „DLS puzzle”
before HADES (< 2008)
HADES data projected in DLS acceptance
DLS data: R.J. Porter et al.: PRL. 79 (1997) 1229
Calculation: E.L.Bratkovskaya et al. PLB445 (1999) 265
HADES data: Agakishiev et al., PLB 663 (2008) 43
 HADES fully confirms DLS (DiLepton Spectometer puzzle)
• What about „excess” ? Is it true in-medium effect ? or not understood elementary process?
The ALICE Collaboration is building a dedicated heavy-ion
detector to study the physics of strongly interacting matter at
extreme energy densities, where the formation of a new phase
The existence of such a phase and its properties are key
issues in QCD for the understanding of confinement and of
chiral-symmetry restoration.
J/ suppression
General agreement that the J/ suppression in hot and dense
matter as produced by ultrarelativistic AA collisions is a golden
signature for the formation of the QGP...
A. Andronic et al. PLB 652 (2007) 259
“Charmonium production at LHC”,
M. Malek, INP, July 09
Phenomenology group (Santiago de Compostela)
➜ Permanent: C. Pajares, N. Armesto, E. G. Ferreiro, C. M. Merino.
➜ Others: C. A. Salgado (Ramón y Cajal, ERC-StG).
➜ Postdocs: G. Beuf, M. Deak, Y. Guo, C. Marquet, M. Martínez.
➜ 5 PhD. students.
➜ Quark-Gluon Plasma: quarkonium suppression, energy loss and jet
quenching, collective phenomena and correlations.
➜ Small-x physics and nuclear parton densities.
➜ Simulators for HE nuclear collisions: PSM, Q-PYTHIA, Q-HERWIG.
➜ ALICE: theoretical input, IRCs, upgrade proposals.
➜ LHeC: CDR to the TDR.
Collaborations: UB, CERN, Jussieu, Lisboa, IPN Orsay, Purdue,
The CBM (Compressed Baryonic Matter) detector is a more sophisticated
version of the HADES detector and will measure heavy-ion collisions up
to 35 AGeV, achieving densities of 8-10 times nuclear matter density. It will
also allow to explore: chiral restoration, the critical point of the QCDphase diagram and properties of mesons containing charm: D, J/Y 
 antiproton-proton and antiproton-nucleus collisions
 Exotic Hadrons
(Glueballs and Hybrids)
 Charm in Nuclei
 Charmonium
 D- and DS-physics
 Hypernuclei
A.Gadea (IFIC, Valencia)
B. Quintana (U. Salamanca)
A. Jungclaus (IEM, Madrid)
The spanish theory groups have been and are very active in contributing
to the progress of Hadron physics. The groups are well integrated in
the international circuit, participating in the big european projects
(e.g. HadronPhysics) and providing support to the ongoing and future
experiments, with an especial focus to the FAIR physics program.
The experimental groups working on hadron physics projects are
very limited. However, many spanish citizens are involved in
experimental collaborations (MAINZ, GSI, CERN, …) and
could be the seed for an eventual growing of the experimental groups.
Thank you for your attention!