Two-body spectra of pseudoscalar mesons with an O(a2)-improved lattice action using Wilson fermions

被引：5

作者：

Fiebig, HR

Markum, H

Mihaly, A

Rabitsch, K

Woloshyn, RM

机构：

[1] Florida Int Univ, Dept Phys, Miami, FL 33199 USA

[2] Vienna Tech Univ, Inst Kernphys, A-1040 Vienna, Austria

[3] Lajos Kossuth Univ, Dept Theoret Phys, H-4010 Debrecen, Hungary

[4] TRIUMF, Vancouver, BC V6T 2A3, Canada

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 1998年 / 63卷

基金：

奥地利科学基金会; 匈牙利科学研究基金会; 美国国家科学基金会;

关键词：

D O I：

10.1016/S0920-5632(97)00717-2

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 extend our calculations with the second-order tree-level and tadpole improved next-nearest-neighbor action to meson-meson systems. Correlation matrices built from interpolating fields representing two pseudoscalar mesons (pi-pi) with relative momenta (p) over right arrow are diagonalized, and the mass spectrum is extracted. Link variable fuzzing and operator smearing at both sinks and sources is employed. Calculations are presented for two values of the hopping parameter. The spectrum is used to discuss the residual interaction in the meson-meson system.

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页码：188 / 190

页数：3

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