TAU-LEPTON LEPTONIC BRANCHING FRACTIONS FROM L3

被引：5
作者：
ALCARAZ, J [1 ]
机构：
[1] CIEMAT,E-28040 MADRID,SPAIN
来源：
NUCLEAR PHYSICS B | 1995年
关键词：
D O I：
10.1016/0920-5632(95)00148-3
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We have measured the branching fractions of the tau lepton into electrons and muons with the L3 detector at LEP. The sample used in analysis has been collected during 1991, 1992 and 1993 around the Z peak, with an integrated luminosity of 61 pb(-1). A preliminary result yields: BR(tau(-) --> e(-)<(nu)over bar>(e) nu(tau)) = (17.69 +/- 0.17 +/- 0.08)% (1) BR(tau(-) --> mu(-)<(nu)over bar>(mu)nu(tau)) = (17.36 +/- 0.17 +/- 0.07)% (2) where the first error is statistical and the second one is systematic.
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页码：237 / 245
页数：9
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