One-loop renormalization of fermionic currents with the overlap-Dirac operator

被引：47

作者：

Alexandrou, C

Follana, E

Panagopoulos, H

Vicari, E

机构：

[1] Univ Cyprus, Dept Phys, CY-1678 Nicosia, Cyprus

[2] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy

[3] Ist Nazl Fis Nucl, I-56127 Pisa, Italy

来源：

NUCLEAR PHYSICS B | 2000年 / 580卷 / 1-2期

关键词：

lattice QCD; overlap-Dirac operator; fermionic currents; lattice renormalization; lattice perturbation theory;

D O I：

10.1016/S0550-3213(00)00190-5

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 compute the one-loop lattice renormalization of the two-quark operators <(psi)over bar>Gamma psi, where Gamma denotes the generic Dime matrix, for the lattice formulation of QCD using the overlap-Dirac operator. We also study the renormalization of quark bilinears which are more extended and have better chiral properties. Finally. we present improved estimates of these renormalization constants, coming from cactus resummation and from mean field perturbation theory. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：394 / 406

页数：13

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