B meson decay constants from NRQCD

被引:45
作者
Khan, AA [1 ]
Bhattacharya, T
Collins, S
Davies, CTH
Gupta, R
Morningstar, C
Shigemitsu, J
Sloan, J
机构
[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[3] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
[4] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
[5] Univ Kentucky, Dept Phys, Lexington, KY 40506 USA
关键词
D O I
10.1016/S0370-2693(98)00323-2
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present quenched results for B meson decay constants using NRQCD b quarks and O(a) tadpole improved clover light quarks. For the first time, one-loop matching factors between lattice and continuum currents are incorporated through O(alpha/M) taking operator mixing fully into account. This includes an important O(alpha a) discretization correction to the heavy-light axial vector current. We find f(B) = 147(11)((+8)(-12))(9)(6) MeV and f(Bs)/f(B) = 1.20(4)((+4)(-0)). (C) 1998 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:132 / 140
页数:9
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