LIMITS ON NEUTRAL HEAVY-LEPTON PRODUCTION FROM Z0 DECAY

被引：53

作者：

AKRAWY, MZ

机构：

[1] Queen Mary and Westfield College, University of London, London

[2] Department of Physics and Astronomy, Tel Aviv University, Tel Aviv

[3] Department of Physics, Schuster Laboratory, The University, Manchester

[4] Cavendish Laboratory, Cambridge

[5] Enrico Fermi Institute, Department of Physics, University of Chicago, Chicago

[6] Department of Physics, Carleton University, Colonel By Drive, Ottawa

[7] Rutherford Appleton Laboratory, Chilton, Didcot

[8] Laboratoire de Physique Nucléaire, Université de Montréal, Montreal

[9] Department of Physics and Astronomy, University of Maryland, College Park

[10] Fakultät für Physik, Albert Ludwigs Universität

[11] CERN, European Organization for Particle Physics

[12] Physikalisches Institut, Universität Heidelberg

[13] Physikalisches Institut, Universität Bonn

[14] School of Physics and Space Research, University of Birmingham, Birmingham

[15] Dipartimento di Fisica dell'Università di Bologna, INFN

[16] University College London, London

[17] Birkbeck College, London

[18] Department of Physics, Technion - Israel Institute of Technology, Haifa

[19] DPhPE, CEN Saclay

[20] Department of Physics, University of California, Riverside

[21] National Research Council of Canada, Herzberg Institute of Astrophysics, Ottawa

[22] Nuclear Physics Department, Weizmann Institute of Science, Rehovot

[23] International Center for Elementary Particle Physics, Department of Physics, University of Tokyo

[24] Brunel University, Uxbridge

[25] Kobe University, Kobe

来源：

PHYSICS LETTERS B | 1990年 / 247卷 / 2-3期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0370-2693(90)90924-U

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Data taken with the OPAL detector at LEP during a scan of the Z0 resonance were searched for evidence of neutral heavy leptons that decay via mixing. Four different decay modes of the neutral heavy lepton are considered: L0→eW*, L0→μW*, L0→τW*, and L0→vZ*. No evidence is seen of a neutral heavy lepton signal; branching fraction limits in the range of 10-3-10-4 are set for Z0→L0L0 and for Z0→vL0 (orvL0) relative to Z0→hadrons. © 1990.

引用

页码：448 / 457

页数：10

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