文章基本信息

标题：Transverse spin densities from lattice QCD
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作者：P. Haegler
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2006
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present selected results from recent lattice QCD calculations of moments of quark helicity flip generalized parton distributions (GPDs) and transverse spin densities of quarks in the nucleon. Our dynamical simulations are based on two flavors of clover-improved Wilson fermions and Wilson glue. The large number of datasets for different values of b and k allows us to study scaling violations and the pion mass dependence of our results. We find significant contributions from some of the quark helicity flip GPDs, giving rise to strongly distorted quark densities in impact parameter space.