Abstract
A search for minimal standard model (MSM) and minimal supersymmetric model (MSSM), Higgs bosons with masses larger than 3 GeV/c2 has been performed by the OPAL collaboration one + e − data from LEP corresponding to an integrated luminosity of 1.24 pb−1. The limits for MSM Higgs bosons have been obtained using the channelsZ 0→Z 0* H 0,Z 0*→(v \(\bar v\) ore + e − or µ+, µ−. The search for MSSM Higgs bosons has been performed using the channelsZ 0→Z 0* H 0,v \(\bar v\) ore + e − or µ+µ−),h 0 →q \(\bar q\) andZ 0→h 0 A 0,h 0 A 0→(4 jet orτ + τ −→ or 4τ), whereh 0 andA 0 are the two lightest neutral MSSM Higgs bosons. No Higgs boson signal has been observed. The MSM Higgs boson is excluded in the mass range 3 GeV <\(m_{H^0 }\)<25.3 GeV/c2 at the 95% confidence level; limits on the masses of the two lightest neutral MSSM Higgs bosons are obtained forh 0 mases up to 40.5 GeV/c2.
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S.L. Glashow, J. Iliopoulos, L. Maiani: Phys. Rev. D2 (1970) 1285; S. Weinberg: Phys. Rev. Lett. 19 (1967) 1264; A. Salam: Elementary particle theory, N. Svartholm ed., p. 367 Stockholm: Almquist and Wiksells
P.W. Higgs: Phys. Lett. 12 (1964); 132; F. Englert, R. Brout: Phys. Rev. Lett. 13 (1964) 321; G.S. Guralnik, C.R. Hagen, T.W.B. Kibble: Phys. Rev. Lett. 13 (1964) 585
M.Z. Akrawy et al.: Phys. Lett. B236 (1990) 224
D. Lellouch: Searches for new particles with the OPAL Detector, XX Rencontre de Moriond, Les Arcs, France (1990)
D. Decamp et al.: Phys. Lett. B236 (1990) 233; D. Decamp et al.: Phys. Lett. B241 (1990) 141
P. Abreu et al.: CERN-EP/90-44 (1990)
D. Decamp et al.: CERN EP/90-70 (1990)
B. Adeva et al.: L3 preprint 10 (1990)
P.J. Franzini, P. Taxil (conveners): Higgs search in CERN 89-08, V. 2, p. 59 (1989)
S. Dawson, J.F. Gunion, H.E. Haber, G.L. Kane: The Higgs Hunter's Guide, BNL-41644 (1989), submitted to Phys. Rep.
J.L. Lopez, D.V. Nanopoulos: CTP-TAMU-14/90 (1990)
D. Decamp et al.: Phys. Lett. B237 (1990) 291
P. Abreu et al.: CERN-EP/90-60 (1990)
OPAL Technical Proposal (1983) and CERN/LEPC/83-4
M.Z. Akrawy et al.: Phys. Lett. B240 (1990) 291
R. Brun et al.: GEANT3, CERN DD/EE/84-1 (1987)
M.Z. Akrawry et al.: CERN-EP/90-48 (1990) (submitted to Z. Phys. C—Particles and Fields)
M.Z. Akrawy et al.: Phys. Lett. B236 (1990) 364
M. Bengtsson, T. Sjostrand: Nucl. Phys. B289 (1987) 810
F.A. Berends, G. Kleiss: Nucl. Phys. B260 (1985) 32
M. Consoli, W. Hollik: Electroweak corrections for Z physics, in CERN 89-8, V. 1, p. 39
Z. Hioki: Phys. Lett. B224 (1989) 417
F.A. Berends, G. Burgers, W.L. van Neerven: Nucl. Phys. B297 (1988) 429
O. Nicrosini, L. Trentadue: Phys. Lett. B196 (1987) 551
E. Braaten, J.P. Leveille: Phys. Rev. D22 (1980) 715; N. Sakai: Phys. Rev. D22 (1980) 2220; T. Inami, T. Kubota: Nucl. Phys. B179 (1981) 171
S. Jadach et al.: KORALZ the Monte Carlo program for τ and μ pair production processes at LEP/SLC, unpublished (1989)
G. Marchesini, B.R. Webber Nucl Phys. B310 (1988) 461
W. Bartel et al.: Z. Phys. C—Particles and Fields 33 (1986) 23
M.Z. Akrawy et al.: Phys. Lett. B235 (1990) 389
J. Chrin: Ann. NY Acad. Sci. 535 (1988) 131
G.P. Yost et al.: Phys. Lett. B204 (1988) 4
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OPAL Collaboration., Akrawy, M.Z., Alexander, G. et al. Searches for neutral Higgs bosons ine + e − collisions at LEP. Z. Phys. C - Particles and Fields 49, 1–15 (1991). https://doi.org/10.1007/BF01570792
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DOI: https://doi.org/10.1007/BF01570792