Chiral logs with staggered fermions

被引：5

作者：

Aubin, C ^{[1
]}

Bernard, C

DeTar, C

Gottlieb, S

Heller, UM

Orginos, K

Sugar, R

Toussaint, D

机构：

[1] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[2] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[3] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[4] Florida State Univ, CSIT, Tallahassee, FL 32306 USA

[5] RIKEN, BNL Res Ctr, Upton, NY 11973 USA

[6] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[7] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2003年 / 119卷

关键词：

D O I：

10.1016/S0920-5632(03)01511-1

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 chiral logarithms in the presence of "taste" symmetry breaking of staggered fermions. The lagrangian of Lee and Sharpe is generalized and then used to calculate the logs in pi and K masses. We correct an error in Ref. [1]. MILC data with three light dynamical flavors can be well fit by our formulas. However, two new chiral parameters, which describe O(a(2)) hairpin diagrams for taste-nonsinglet mesons, enter in the fits. To obtain precise results for the physical O(p(4)) coefficients, these new parameters will need to be bounded.

引用

页码：233 / 235

页数：3

共 8 条

[1]

[Anonymous], UNPUB

[2]

AUBIN C, UNPUB

[3] Chiral logs in the presence of staggered flavor symmetry breaking [J].