Search for Higgs bosons and new particles decaying into two photons at √s = 183 GeV

K Ackerstaff; G Alexander; J Allison; N Altekamp; KJ Anderson; S Anderson; S Arcelli; S Asai; SF Ashby; D Axen; G Azuelos; AH Ball; E Barberio; RJ Barlow; R Bartoldus; JR Batley; S Baumann; J Bechtluft; T Behnke; KW Bell; G Bella; S Bentvelsen; S Bethke; S Betts; O Biebel; A Biguzzi; SD Bird; V Blobel; IJ Bloodworth; M Bobinski; P Bock; J Böhme; M Boutemeur; S Braibant; P Bright-Thomas; RM Brown; HJ Burckhart; C Burgard; R Burgin; P Capiluppi; RK Carnegie; AA Carter; JR Carter; CY Chang; DG Charlton; D Chrisman; C Ciocca; PEL Clarke; E Clay; I Cohen; JE Conboy; OC Cooke; C Couyoumtzelis; RL Coxe; M Cuffiani; S Dado; GM Dallavalle; R Davis; S De Jong; LA del Pozo; A de Roeck; K Desch; B Dienes; MS Dixit; M Doucet; J Dubbert; E Duchovni; G Duckeck; IP Duerdoth; D Eatough; PG Estabrooks; E Etzion; HG Evans; F Fabbri; A Fanfani; M Fanti; AA Faust; F Fiedler; M Fierro; HM Fischer; I Fleck; R Folman; A Fürtjes; DI Futyan; P Gagnon; JW Gary; J Gascon; SM Gascon-Shotkin; C Geich-Gimbel; T Geralis; G Giacomelli; P Giacomelli; V Gibson; WR Gibson; DM Gingrich; D Glenzinski; J Goldberg; W Gorn; C Grandi; E Gross

Journal article

Search for Higgs bosons and new particles decaying into two photons at √s = 183 GeV

K Ackerstaff, G Alexander, J Allison, N Altekamp, KJ Anderson, S Anderson, S Arcelli, S Asai, SF Ashby, D Axen, G Azuelos, AH Ball, E Barberio, RJ Barlow, R Bartoldus, JR Batley, S Baumann, J Bechtluft, T Behnke, KW Bell Show all

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics | ELSEVIER SCIENCE BV | Published : 1998

DOI: 10.1016/S0370-2693(98)01095-8

Abstract

A 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 B(H0 → γγ) 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, σ(e+e- → XY) × B(X → γγ) × B(Y → ff̄), as low..

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