Moments of meson distribution functions with dynamical twisted mass fermions

Details Moments of meson distribution functions with dynamical twisted mass fermions Moments of meson distribution functions with dynamical twisted mass fermions

2007-10-08

arxiv.org/abs/0710.1580v1

PoSLAT2007:153,2007

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 3 figures. Talk given at the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg

Scientific paper

We present our preliminary results on the lowest moment of quark distribution functions of the pion using two flavor dynamical simulations with Wilson twisted mass fermions at maximal twist. The calculation is done in a range of pion masses from 300 to 500 MeV. A stochastic source method is used to reduce inversions in calculating propagators. Finite volume effects at the lowest quark mass are examined by using two different lattice volumes. Our results show that we achieve statistical errors of only a few percent. We plan to compute renormalization constants non-perturbatively and extend the calculation to two more lattice spacings and to the nucleons.

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