Measurement of the running b-quark mass using e+e- → b(b)over-barg events

被引：32

作者：

Brandenburg, A ^{[1
]}

Burrows, PN

Muller, D

Oishi, N

Uwer, P

机构：

[1] Rhein Westfal TH Aachen, Inst Theoret Phys, D-52056 Aachen, Germany

[2] DESY, Theory Grp, D-22603 Hamburg, Germany

[3] Univ Oxford, Oxford OX1 3RH, England

[4] Stanford Linear Accelerator Ctr, Menlo Park, CA 94025 USA

[5] Nagoya Univ, Nagoya, Aichi 464, Japan

[6] Ctr Etud Saclay, Serv Phys Theor, F-91191 Gif Sur Yvette, France

来源：

PHYSICS LETTERS B | 1999年 / 468卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(99)01194-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have studied the determination of the running b-quark mass, m(b)(M-z), using Z(0) decays into 3 or more hadronic jets. We calculated the ratio of greater than or equal to 3-jet fractions in e(+)e(-)--> b (b) over bar versus e(+)e(-) --> q(i)(q) over bar(i) (q(i) = u or d or s) events at next-to-leading order in perturbative QCD using six different infra-red- and collinear-safe jet-finding algorithms. We compared with corresponding measurements from the SLD Collaboration and found a significant algorithm-dependence of the fitted m(b)(M-z) value. Our best estimate, taking correlations into account, is m(b)(M-z) = 2.56 +/- 0.27 (stat.)(-0.38)(+0.28) (syst.)(-1.48)(+0.49) (theor.) GeV/c(2). (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：168 / 177

页数：10

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