QCD spectrum with three quark flavors

被引：362

作者：

Bernard, C ^{[1
]}

Burch, T

Orginos, K

Toussaint, D

DeGrand, TA

DeTar, C

Datta, S

Gottlieb, S

Heller, UM

Sugar, R

机构：

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

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

[3] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

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

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

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

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

来源：

PHYSICAL REVIEW D | 2001年 / 64卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.64.054506

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results from a lattice hadron spectrum calculation using three flavors of dynamical quarks - two light and one strange-and quenched simulations for comparison. These simulations were done using a one-loop Symanzik improved gauge action and an improved Kogut-Susskind quark action. The lattice spacings, and hence also the physical volumes, were tuned to be the same in all the runs to better expose differences due to flavor number. Lattice spacings were tuned using the static quark potential, so as a by-product we obtain updated results for the effect of sea quarks on the static quark potential. We find indications that the full QCD meson spectrum is in better agreement with experiment than the quenched spectrum. For the 0(+ +) (a(0)) meson we see a coupling to two pseudoscalar mesons, or a meson decay on the lattice.

引用

页数：15