3-point functions from twisted mass lattice QCD at small quark
masses
Presenter: Karl Jansen
S. Capitani, K. Jansen, M. Papinutto, A. Shindler, C. Urbach and I. Wetzorke
Abstract: We present first, quenched lattice results for moments of parton distribution functions as relevant for deep inelastic scattering experiments using
Wilson twisted mass fermions. We demonstrate that we can reach pion masses of
about 270MeV and hence enter the regime where contact to chiral perturbation
theory becomes possible. Using the optimal value of the critical quark mass
we find only small scaling violations which allows us to perform a controlled
continuum limit of our results.
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