Nucleon structure in the chiral regime with domain wall fermions on an improved staggered sea

Details Nucleon structure in the chiral regime with domain wall fermions on an improved staggered sea Nucleon structure in the chiral regime with domain wall fermions on an improved staggered sea

2006-09-30

arxiv.org/abs/hep-lat/0610007v3

PoSLAT2006:121,2006

Physics

High Energy Physics

High Energy Physics - Lattice

Talks of J.W. Negele and D.B. Renner at Lattice 2006

Scientific paper

Moments of unpolarized, helicity, and transversity distributions, electromagnetic form factors, and generalized form factors of the nucleon are presented from a preliminary analysis of lattice results using pion masses down to 359 MeV. The twist two matrix elements are calculated using a mixed action of domain wall valence quarks and asqtad staggered sea quarks and are renormalized perturbatively. Several observables are extrapolated to the physical limit using chiral perturbation theory. Results are compared with experimental moments of quark distributions and electromagnetic form factors and phenomenologically determined generalized form factors, and the implications on the transverse structure and spin content of the nucleon are discussed.

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