TY - JOUR
T1 - Search for chargino and neutralino production using the OPAL detector at √s = 130-136 GeV at LEP
AU - Alexander, G.
AU - Bella, G.
N1 - Funding Information:
National Science Foundation, USA, Particle Physics and Astronomy Research Council, UK. Natural Sciences and Engineering Research Council, Canada. Fussefeld Foundation, Israel Ministry of Science, Israel Science Foundation, administeredb y the Israel Academy of Science and Humanities, Minerva Gesellschaft, Japanese Ministry of Education, Science, Sports and Culture (the Monbusho) and a grant under the Mon-busho International Science ResearchP rogram, German Israeli Bi-national Science Foundation (GIF), Direction des Sciences de la Matiere du Commissariat a I’Energie Atomique, France, Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologie, Germany, National Research Council of Canada, A.P. Sloan Foundation, and the Hungarian Foundation for Scientific Research,O TKA T-O 16660.
PY - 1996/6/6
Y1 - 1996/6/6
N2 - A search for charginos and neutralinos, predicted by supersymmetric theories, has been performed using a data sample of 2.6 pb-1 at a centre-of-mass energy of √s = 130 GeV and 2.6 pb-1 at 136 GeV collected with the OPAL detector at LEP during November 1995. No candidate events were observed. The 95% C.L. lower limit on the lightest chargino mass in the Minimal Supersymmetric Standard Model is 65.4 GeV if the universal scalar mass m0 is greater than 1 TeV, and 58.7 GeV for the smallest m0 compatible with slepton and sneutrino mass limits obtained at centre-of-mass energies near the Z peak. These limits were obtained under the conditions that the lightest chargino is heavier than the lightest neutralino by more than 10 GeV and tan β is larger than 1.5. The results of a model independent search for charginos and neutralinos are also given.
AB - A search for charginos and neutralinos, predicted by supersymmetric theories, has been performed using a data sample of 2.6 pb-1 at a centre-of-mass energy of √s = 130 GeV and 2.6 pb-1 at 136 GeV collected with the OPAL detector at LEP during November 1995. No candidate events were observed. The 95% C.L. lower limit on the lightest chargino mass in the Minimal Supersymmetric Standard Model is 65.4 GeV if the universal scalar mass m0 is greater than 1 TeV, and 58.7 GeV for the smallest m0 compatible with slepton and sneutrino mass limits obtained at centre-of-mass energies near the Z peak. These limits were obtained under the conditions that the lightest chargino is heavier than the lightest neutralino by more than 10 GeV and tan β is larger than 1.5. The results of a model independent search for charginos and neutralinos are also given.
UR - http://www.scopus.com/inward/record.url?scp=0042261080&partnerID=8YFLogxK
U2 - 10.1016/0370-2693(96)00301-2
DO - 10.1016/0370-2693(96)00301-2
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AN - SCOPUS:0042261080
SN - 0370-2693
VL - 377
SP - 181
EP - 194
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-3
ER -