Abstract
Production of events with multihadronic and leptonic final states has been measured in e+e- collisions at centre-of-mass energies significantly above the Z0 mass, using the OPAL detector at LEP. A substantial production rate of radiative Z0γ events was observed, as expected, together with events with less energetic initial-state photons, The cross-sections and leptonic forward-backward asymmetries were measured and compared with Standard Model expectations. In a model-independent fit to the Z0l lineshape, the hadronic cross-section and lepton asymmetries presented here provide constraints on the size of the γZ0-interference term which are complementary to those afforded by LEP data accumulated at the Z0 resonance.
Original language | English |
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Pages (from-to) | 232-244 |
Number of pages | 13 |
Journal | Physics Letters B |
Volume | 376 |
Issue number | 1-3 |
DOIs | |
State | Published - May 23 1996 |
Externally published | Yes |
Funding
We would particularly like to thank the SL Division for the excellent start-up and performance of the short LEP 1.5 data taking run, the precise information on the absolute energy, and their continuing close cooperation with our experimental group. In addition to the support staff at our own institutions we are pleased to acknowledge the Department of Energy, USA, National Science Foundation, USA, Particle Physics and Astronomy Research Council, UK Natural Sciences and Engineering Research Council, Canada, Israel Ministry of Science, Israel Science Foundation, administered by the Israel Academy of Science and Humanities, Minerva Gesellschaft, Japanese Ministry of Education, Science and Culture (the Monbusho) and a grant under the Monbusho International Science Research Program, German Israeli Bi-national Science Foundation (GIF), Direction des Sciences de la Mat&e du Commissariat a 1’Energie Atomique, France, Bundesministerium fur Bildung, Forschung und Technologie, Germany, National Research Council of Canada, Hungarian Foundation for Scientific Research, OTKA T-O 16660, and OTKA F-01 5089.
Funders | Funder number |
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Direction des Sciences de la Mat&e du Commissariat a 1’Energie Atomique, France, Bundesministerium fur Bildung, Forschung und Technologie | |
German Israeli Bi-national Science Foundation | |
Hungarian Foundation for Scientific Research | |
Israel Ministry of Science, Israel Science Foundation | |
Minerva Gesellschaft | |
National Science Foundation | |
U.S. Department of Energy | |
Natural Sciences and Engineering Research Council of Canada | |
National Research Council Canada | |
Ministry of Education, Culture, Sports, Science and Technology | |
Hungarian Scientific Research Fund | F-01 5089, T-O 16660 |
Israel Academy of Sciences and Humanities |