Beauty mesons in lattice QCD with exact chiral symmetry

被引：70
|
作者：
Chiu, Ting-Wai [1 ]
Hsieh, Tung-Han
Huang, Chao-Hsi
Ogawa, Kenji
机构：
[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
[2] Natl Taiwan Univ, Natl Ctr Theoret Sci, Taipei 10617, Taiwan
[3] Acad Sinica, Res Ctr Appl Sci, Taipei 115, Taiwan
来源：
PHYSICS LETTERS B | 2007年 / 651卷 / 2-3期
关键词：
lattice QCD; heavy quarks; charmed mesons; beauty mesons; FERMIONS;
D O I：
10.1016/j.physletb.2007.06.017
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the first study of treating b, c, and s quarks as Dirac fermions in quenched lattice QCD with exact chiral symmetry. For 100 gauge configurations generated with single-plaquette action at beta = 7.2 on the 323 x 60 lattice, we compute point-to-point quark propagators for 33 quark masses in the range 0.01 <=, m(q)a <=, 0.85, and measure the time-correlation function of (pseudo-)scalar, (pseudo-)vector, and tensor mesons, for symmetric and asymmetric quark masses respectively. The lowest-lying mass spectra of mesons with quark contents b (b) over bar, c (b) over bar, s (b) over bar, and a are determined, together with the pseudoscalar decay constants. Our results are summarized in the tables. Furthermore, we also determine the b and c quark masses, m(b)((MS) over bar)(m(b)) = 4.65(5) GeV, m(c)((MS) over bar)(m(c)) = 1.16(4) GeV. (c) 2007 Elsevier BX All rights reserved.
引用
收藏
页码：171 / 176
页数：6
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