Abstract
We have searched for the excited electron neutrino produced from Z0 decays in the channel e+e-→νν* using the L3 detector at LEP. The decays ν*→eW and ν*→νγ have been investigated. We have determined an upper limit on the Zνν* coupling as a function of mν* up to the Z0 mass.
| Original language | English |
|---|---|
| Pages (from-to) | 525-532 |
| Number of pages | 8 |
| Journal | Physics Letters B |
| Volume | 252 |
| Issue number | 3 |
| DOIs | |
| State | Published - Dec 20 1990 |
| Externally published | Yes |
Funding
European Laboratory for Particle Physics, CERN, CH-1211 Geneva 23, Switzerland b INFN-SezionediFirenzeandUniversityofFlorence, 1-50125Florence, Italy Centro de lnvestigaciones Energeticas, Medioambientales y Tecnologicas, CIEMA T, E-28040 Madrid, Spain d JohnsHopkins University, Baltimore, MD 21218, USA INFN-Sezione di Napoli and University of Naples, 1-80125 Naples, Italy f Northeastern University, Boston, MA 02115, USA World Laboratory, FBLJA Project, CH-1211 Geneva, Switzerland h Eidgen6ssische Technische Hochschule, ETH Ziirich, CH-8093 Zurich, Switzerland i Massachusetts Institute of Technology, Cambridge, MA 02139, USA J Leningrad Nuclear Physics Institute. SU-188 350 Gatchina, USSR k CentralLaboratory ofAutomation andlnstrumentation, CLANP. Sofia, Bulgaria INFN-Sezione di Bologna, 1-40126 Bologna, Italy m Institute of Theoretical and Experimental Physics, ITEP, SU-117 259 Moscow, USSR " University of Michigan, Ann Arbor, M148109, USA o Tata Institute of Fundamental Research, Bombay 400 005, India P INFN-Sezione di Roma and University of Rome "La Sapienza'" 1-00185 Rome. Italy q Princeton University, Princeton, NJ 08544, USA r Union College, Schenectady, NY 12308, USA s University of Geneva, CH-1211 Geneva 4, Switzerland Laboratoire de Physique des Particules, LAPP, F-74519 Annecy-le-Vieux, France u CentralResearchlnstituteforPhysicsoftheHungarianAcademyofSciences, H-1525Budapest 114, Hungary v L Physikalisches Institut, RWTH, W-51OOAachen, FRG and lll. Physikalisches lnstitut, RWTH, W-51OOA achen, FRG w National Institute for High Energy Physics, NIKHEF, NL-IO09 DB Amsterdam, The Netherlands and NIKHEF-H and University of Nijmegen, NL-6525 ED Nijmegen, The Netherlands Paul Scherrer lnstitut (PSI), Wiirenlingen, Switzerland Y University of Lausanne, CH-1015 Lausanne, Switzerland z University of California, San Diego, CA 92182, USA aa Carnegie Mellon University, Pittsburgh, PA 15213, USA ab lnstitut de Physique Nucldaire de Lyon, IN2P3-CNRS/Universit~ Claude Bernard, F-69622 Villeurbanne Cedex, France ac Purdue University, West Lafayette, IN 47907, USA ad University of Alabama, Tuscaloosa, AL 35486, USA ae Lawrence Livermore National Laboratory, Livermore, CA 94550, USA ~f High Energy Physics Group, Taiwan, Rep. China ~g Institute of High Energy Physics, IHEP, Beijing, P.R. China • h Chinese University of Science and Technology, USTC, Hefei, Anhui 230 029, P.R. China ai California Institute of Technology, Pasadena, CA 91125, USA aJ Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA • k High Energy Physics Institute, 0-1615 Zeuthen-Berlin, FRG Shanghai Institute of Ceramics, SIC, ShanghaL P.R. China • mL OS Alamos National Laboratory, Los Alamos, NM 87544, USA ~" Harvard University, Cambridge, MA 02139, USA •o University of Hamburg, W-2000 Hamburg, FRG
| Funders | Funder number |
|---|---|
| China ai California Institute of Technology | |
| Italy Centro de lnvestigaciones Energeticas, Medioambientales y Tecnologicas | |
| NIKHEF | |
| NIKHEF-H | |
| Netherlands Paul Scherrer lnstitut | PSI |
| Nuclear Physics Institute | |
| University of Hamburg | |
| University of Lausanne | |
| University of Nijmegen | |
| Lawrence Livermore National Laboratory | |
| Oak Ridge National Laboratory | |
| Purdue University | |
| High Energy Physics Group, University of Mississippi | |
| Massachusetts Institute of Technology | |
| Università degli Studi di Napoli Federico II | |
| Harvard University | |
| University of California, San Diego | |
| Carnegie Mellon University | |
| Los Alamos National Laboratory | |
| Eidgenössische Technische Hochschule Zürich | |
| Northeastern University | |
| RWTH Aachen University | |
| University of Science and Technology of China | |
| Institute of High Energy Physics | |
| Shanghai Institute of Ceramics of the Chinese Academy of Sciences | |
| University of Chinese Academy of Sciences |