Extracting R(b) and R(c) without flavor tagging

被引：4

作者：

Feng, JL

Murayama, H

Wells, JD

机构：

[1] UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, THEORET PHYS GRP, BERKELEY, CA 94720 USA

[2] STANFORD UNIV, STANFORD LINEAR ACCELERATOR CTR, STANFORD, CA 94309 USA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.76.3259

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We note that a flavor tagging independent measurement of the branching fractions R(b) and R(c) may be obtained from the width of hadronic Z decays with a prompt photon, Gamma(q (q) over bar gamma), and an additional theoretical assumption. We find that the current value of Gamma(q (q) over bar gamma) supports the direct measurements and favors generation-blind corrections to quark widths. An updated measurement of Gamma(q (q) over bar gamma) with the currently available LEP data will provide an even stronger constraint.

引用

页码：3259 / 3262

页数：4

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