文章基本信息

标题：Bs and Bc mesons in lattice QCD with exact chiral symmetry
本地全文：下载
作者：T.H. Hsieh
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 determine the masses and decay constants of the pseudoscalar mesons Bs and Bc, and also the masses of the vector mesons B¤s and B¤c , in quenched lattice QCD with exact chiral symmetry. For 100 gauge configurations generated with single-plaquette action at b =7:2 on the 323£60 lattice, we compute point-to-point quark propagators for 33 quark masses in the range 0:01·mqa·0:85, and measure the time-correlation functions of pseudoscalar and vector mesons. The inverse lattice spacing and the charm quark bare mass are determined using the mass and decay constant of hc(2980). The bare masses of s and b quarks are chosen such that the masses of the corresponding vector mesons are in good agreement with f (1020), and ¡(9460) respectively. Our preliminary results are: mBs = 5385(27) MeV, fBs = 253(8) MeV, mBc = 6278(6) MeV, fBc = 489(4) MeV, mB¤s = 5409(29) MeV, and mB¤c = 6315(6) MeV.