文章基本信息

标题：B meson decay constant in static approximation with domain wall fermion and perturbative $O(\alpha_s a)$ matching
本地全文：下载
作者：T. Ishikawa
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2008
卷号：2008
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We discuss the perturbative O(asa) matching in the static heavy and domain-wall light quark system. The gluon action is the Iwasaki action and the link smearing is performed in the static heavy action. The chiral symmetry of the light quark realized by using the domain-wall fermion formulation does not prohibit the mixing of the operators at O(a). The application of O(a) improvement to the actual data shows that the B meson decay constant fB, the matrix elementsMB and the B parameter BB have non-negligible effects, while the effect on the SU(3) breaking ratio x is small.