A SEARCH FOR HEAVY CHARGED AND NEUTRAL LEPTONS FROM Z0 DECAYS

被引：27

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] University of Alabama, Tuscaloosa

[31] Institute of High Energy Physics, IHEP, Beijing

[32] California Institute of Technology, Pasadena

[33] High Energy Physics Institute, Berlin

[34] Shanghai Institute of Ceramics, SIC, Shanghai

[35] Harvard University, Cambridge

[36] University of Hamburg

来源：

PHYSICS LETTERS B | 1990年 / 251卷 / 02期

关键词：

D O I：

10.1016/0370-2693(90)90943-Z

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have searched for charged and neutral leptons. We exclude stable Dirac neutrinos below 42.8 GeV and stable Majorana neutrinos below 34.8 GeV. From a search for unstable neutrinos we exclude masses below 46.4 GeV (Dirac) and below 45.1 GeV (Majorana). We exclude all masses of sequential charged and neutral leptons, except if both masses are larger than 42.8 GeV (for stable Dirac neutrinos). All mass limits correspond to 95% CL. © 1990.

引用

页码：321 / 330

页数：10

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