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

来源：

PHYSICS LETTERS B | 1998年 / 427卷 / 1-2期

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

页码：132 / 140

页数：9

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