Weak matrix elements without quark masses on the lattice

被引：1

作者：

Giusti, L ^{[1
]}

机构：

[1] Boston Univ, Dept Phys, Boston, MA 02215 USA

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2000年 / 86卷

关键词：

D O I：

10.1016/S0920-5632(00)00579-X

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：

We introduce a new parameterization of four-fermion matrix elements which does not involve quark masses and thus allows a reduction of systematic uncertainties in physical amplitudes. As a result the apparent quadratic dependence of epsilon'/epsilon on m(s)(mu) is removed. To simplify the matching between lattice and continuum renormalization schemes, we express our results in terms of Renormalization Group Invariant B-parameters which are renormalization-scheme and scale independent. As an application of our proposal, matrix elements of Delta I = 3/2 and SUSY Delta F = 2 (F = S, C, B) four-fermion operators have been computed.

引用

页码：299 / 302

页数：4

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