Heavy-light mesons and baryons with b quarks -: art. no. 054505

被引：52

作者：

Khan, AA ^{[1
]}

Bhattacharya, T

Collins, S

Davies, CTH

Gupta, R

Morningstar, C

Shigemitsu, J

Sloan, J

机构：

[1] Univ Tsukuba, Ctr Computat Phys, Tsukuba, Ibaraki 3058577, Japan

[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[3] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

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

[5] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[6] Univ Kentucky, Dept Phys, Lexington, KY 40506 USA

来源：

PHYSICAL REVIEW D | 2000年 / 62卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.62.054505

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present lattice results for the spectrum of mesons containing one heavy quark and of baryons containing one or two heavy quarks. The calculation is done in the quenched approximation using the NRQCD formalism for the heavy quark. We analyze the dependence of the mass splittings on both the heavy and the light quark masses. Meson P-state fine structure and baryon hyperfine splittings are resolved for the first time. We fix the b quark mass using both M-B and M-Lambda b, and our best estimate is m(b)((MS) over bar) (m(b)((MS) over bar)) = 4.35(10)((-3)(+2)) (20) Gev. The spectrum, obtained by interpolation to m(b), is compared with the experimental data.

引用

页码：1 / 17

页数：17

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