Abstract
This letter describes a search for the Standard Model Higgs boson using data from e+e- collisions collected at a centre-of-mass energy of 161 GeV by the OPAL detector at LEP. The data correspond to an integrated luminosity of 10.0 pb-1. The search is sensitive to the main final states from the process where the Higgs boson is produced in association with a fermion anti-fermion pair, namely four jets, two jets with missing energy, and two jets produced together with a pair of electrons, muons or tau leptons. Two candidate events are observed, in agreement with Standard Model background expectations. In combination with previous OPAL searches at centre-of-mass energies close to the Z0 resonance, we derive a lower limit of 65.0 GeV for the mass of the Standard Model Higgs boson, at the 95% confidence level.
Original language | English |
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Pages (from-to) | 231-244 |
Number of pages | 14 |
Journal | Physics Letters B |
Volume | 393 |
Issue number | 1-2 |
DOIs | |
State | Published - Feb 6 1997 |
Externally published | Yes |
Funding
National Science Foundation, USA, Particle Physics and Astronomy Research Council, UK Natural Sciences and Engineering Research Council, Canada, Israel Science Foundation, administeredb y 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 (GIFI, Bundesministerium fiir Bildung, Wissenschaft, Forschung und Technologie, Germany, National Research Council of Canada, Hungarian Foundation for Scientific Research,O TKA T-016660, and OTKA F-015089.
Funders | Funder number |
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GIFI | |
German Israeli Bi-national Science Foundation | |
Hungarian Foundation for Scientific Research | OTKA F-015089, O TKA T-016660 |
Minerva Gesellschaft | |
National Science Foundation | |
Natural Sciences and Engineering Research Council of Canada | |
National Research Council Canada | |
Ministry of Education, Culture, Sports, Science and Technology | |
Israel Academy of Sciences and Humanities | |
Israel Science Foundation | |
Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie |