Calculating ε′/ε using HYP staggered fermions

被引:10
作者
Bhattacharya, T
Fleming, GT
Gupta, R
Kilcup, G
Lee, W
Sharpe, S
机构
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[2] Jefferson Lab, Newport News, VA 23606 USA
[3] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[4] Seoul Natl Univ, Sch Phys, Seoul 151747, South Korea
[5] Univ Washington, Dept Phys, Seattle, WA 98195 USA
基金
美国能源部;
关键词
D O I
10.1016/j.nuclphysbps.2004.11.256
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 present preliminary results for epsilon'/epsilon calculated using HYP staggered fermions in the quenched approximation. We compare different choices of quenched penguin operators.
引用
收藏
页码:369 / 371
页数:3
相关论文
共 10 条
[1]  
Blum T., 2003, PHYS REV D, V68
[2]   THE ANATOMY OF EPSILON(')/EPSILON BEYOND LEADING LOGARITHMS WITH IMPROVED HADRONIC MATRIX-ELEMENTS [J].
BURAS, AJ ;
JAMIN, M ;
LAUTENBACHER, ME .
NUCLEAR PHYSICS B, 1993, 408 (02) :209-285
[3]  
CHOI K, HEPLAT0409020, P94508
[4]   Penguin diagrams for the HYP staggered fermions [J].
Choi, KS ;
Lee, WJ .
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2004, 129 :438-440
[5]   Isospin violation in ε′ -: art. no. 162001 [J].
Cirigliano, V ;
Pich, A ;
Ecker, G ;
Neufeld, H .
PHYSICAL REVIEW LETTERS, 2003, 91 (16)
[6]  
*CP PACS COLL, 2003, PHYS REV D, V68, P4501
[7]  
Golterman M., 2001, JHEP, V0110, P037
[8]   Flavor symmetry and the static potential with hypercubic blocking [J].
Hasenfratz, A ;
Knechtli, F .
PHYSICAL REVIEW D, 2001, 64 (03)
[9]   Perturbative matching of staggered four-fermion operators with hypercubic fat links [J].
Lee, W ;
Sharpe, S .
PHYSICAL REVIEW D, 2003, 68 (05)
[10]   One-loop matching coefficients for improved staggered bilinears [J].
Lee, W ;
Sharpe, SR .
PHYSICAL REVIEW D, 2002, 66 (11)