文章基本信息

标题：Spatial diquark correlations in a hadron
本地全文：下载
作者：J. Green ; M. Engelhardt ; J. Negele 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2010
卷号：2010
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Using lattice QCD, a diquark can be studied in a gauge-invariant manner by binding it to a static quark in a heavy-light-light hadron. We compute the simultaneous two-quark density of a diquark, including corrections for periodic boundary conditions. We define a correlation function to isolate the intrinsic correlations of the diquark and reduce the effects caused by the presence of the static quark. Away from the immediate vicinity of the static quark, the diquark has a consistent shape, with much stronger correlations seen in the good (scalar) diquark than in the bad (vector) diquark. We present results for mp = 293 MeV in Nf = 2+1 QCD as well as mp = 940 MeV in quenched QCD, and discuss the dependence of the spatial size on the pion mass.