MASS LIMITS FOR EXCITED ELECTRONS AND MUONS FROM Z0 DECAY

被引：24

作者：

ADEVA, B

机构：

[1] European Laboratory for Particle Physics, CERN

[2] INFN - Sezione di Firenze, University of Firenze

[3] Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas, CIEMAT

[4] Johns Hopkins University, Baltimore

[5] INFN - Sezione di Napoli, University of Naples

[6] Northeastern University, Boston

[7] World Laboratory, FBLJA Project

[8] Eidgenössische Technische Hochschule, ETH Zürich

[9] Massachusetts Institute of Technology, Cambridge

[10] Leningrad Nuclear Physics Institute

[11] Central Laboratory of Automation and Instrumentation, CLANP, Sofia

[12] INFN - Sezione di Bologna

[13] Institute of Theoretical and Experimental Physics, ITEP

[14] University of Michigan, Ann Arbor

[15] Tata Institute of Fundamental Research, Bombay

[16] INFN - Sezione di Roma, University of Rome La Sapienza

[17] Princeton University, Princeton

[18] Union College, Schenectady

[19] University of Geneva

[20] Laboratoire de Physique des Particules, LAPP

[21] Central Research Institute for Physics, the Hungarian Academy of Sciences

[22] National Institute for High Energy Physics, NIKHEF

[23] NIKHEF-H, University of Nijmegen

[24] Paul Scherrer Institut (PSI), Würenlingen

[25] University of Lausanne

[26] University of California, San Diego

[27] Carnegie Mellon University, Pittsburgh

[28] Institut de Physique Nucléaire de Lyon, IN2P3-CNRS/Université Claude Bernard

[29] Purdue University, West Lafayette

[30] Chinese University of Science and Technology, USTC, Hefei

[31] High Energy Physics Institute, Berlin

[32] California Institute of Technology, Pasadena

[33] Shanghai Institute of Ceramics, SIC, Shanghai

[34] Harvard University, Cambridge

[35] University of Hamburg

来源：

PHYSICS LETTERS B | 1990年 / 247卷 / 01期

关键词：

D O I：

10.1016/0370-2693(90)91066-K

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We searched for excited electrons and muons from Z0 decay in the channels ee→eeγ, ee→eeγγ, ee→(e)eγ, ee→μμγ, ee→μμγγ. using the L3 detector at LEP. The lower mass limit for e* is 45.0 GeV and for μ* 45.3 GeV. The upper limits of ℓℓ*Z0 and ℓℓ*γ couplings at 95% CL have been determined up to mℓ* close to the Z0 mass. © 1990.

引用

页码：177 / 184

页数：8

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