Search for Higgs Bosons and New Particles Decaying into Two Photons at sqrt(s) = 183 GeV

Simple item page
dc.creatorThe OPAL Collaboration
dc.creatoral, K. Ackerstaff et
dc.date1998-08-18
dc.date.accessioned2026-07-07T12:02:23Z
dc.date.available2026-07-07T12:02:23Z
dc.descriptionA search for the resonant production of high mass photon pairs associated with a leptonic or hadronic system has been performed using a data sample of 57.7 pb-1 collected at an average center-of-mass energy of 182.6 GeV with the OPAL detector at LEP. No evidence for contributions from non-Standard Model physics processes was observed. The observed candidates are used to place limits on BR (H to gamma gamma) assuming a Standard Model production rate for Higgs boson masses up to 92 GeV, and on the production cross section for a scalar resonance decaying into di-photons up to a mass of 170 GeV. Upper limits on the product of cross section and branching ratios, sigma(e+e- to XY) * BR(X to gamma gamma) * BR(Y to f fbar) as low as 70fb are obtained over the M(X) range 10 - 170 GeV for the case where 10 < M(Y) < 160 GeV and M(X)+M(Y) > 90 GeV, independent of the nature of Y provided it decays to a fermion pair and has negligible width. Higgs scalars which couple only to gauge bosons at Standard Model strength are ruled out up to a mass of 90.0 GeV at the 95% confidence level. Limits are also placed on non-minimal Higgs sectors having triplet representations.
dc.description21 pages, LaTeX, 4 eps figures included, submitted to Physics Letters B
dc.identifierhttps://arxiv.org/abs/hep-ex/9808014
dc.identifierhttp://arxiv.org/abs/hep-ex/9808014
dc.identifierPhys.Lett.B437:218-230,1998
dc.identifierdoi:10.1016/S0370-2693(98)01095-8
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207424
dc.subjectHigh Energy Physics - Experiment
dc.titleSearch for Higgs Bosons and New Particles Decaying into Two Photons at sqrt(s) = 183 GeV
dc.typetext

Files

Collections

arXiv