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Baryon Axial Charges and Momentum Fractions with N_f=2+1 Dynamical Fermions

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arxiv 1102.3407 v1 pith:6LJNPLJ7 submitted 2011-02-16 hep-lat hep-ph

Baryon Axial Charges and Momentum Fractions with N_f=2+1 Dynamical Fermions

M. G\"ockeler , Ph. H\"agler , R. Horsley , Y. Nakamura , D. Pleiter , P. E. L. Rakow , A. Sch\"afer , G. Schierholz
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H. St\"uben F. Winter J. M. Zanotti
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classification hep-lat hep-ph
keywords dynamicalquarkaxialbaryonchargesfermionsfractionsmomentum
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We report on recent results of the QCDSF/UKQCD Collaboration on investigations of baryon structure using configurations generated with N_f=2+1 dynamical flavours of O(a) improved Wilson fermions. With the strange quark mass as an additional dynamical degree of freedom in our simulations we avoid the need for a partially quenched approximation when investigating the properties of particles containing a strange quark, e.g. the hyperons. In particular, we will focus on the nucleon and hyperon axial charges and quark momentum fractions.

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