Some remarks on O(a) improved twisted mass QCD

被引：19

作者：

Frezzotti, R

Sint, S

机构：

[1] Univ Turin, Dipartimento Fis, I-10126 Turin, Italy

[2] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2002年 / 106卷

关键词：

D O I：

10.1016/S0920-5632(01)01852-7

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Twisted mass QCD (tmQCD) has been introduced as a solution to the problem of unphysical fermion zero modes in lattice QCD with quarks of the Wilson type. We here argue that O(a) improvement of the tmQCD action and simple quark bilinear operators can be more economical than in the standard framework. In particular, an improved and renormalized estimator of the pion decay constant in two-flavour QCD is available, given only the Sheikholeslami-Wohlert coefficient c(sw) and an estimate of the critical mass m,.

引用

页码：814 / 816

页数：3

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