A search for events with a photon pair arising from the decay of a Higgs boson produced in association with a fermion pair, is performed in 893 pb−1 of data recorded by the ALEPH detector at LEP at centre-of-mass energies up to 209 GeV. No excess of such events is found over the expected background. An upper limit is derived on the product of the e+e−→HZ cross section and the H→γγ branching fraction as a function of the Higgs boson mass. A fermiophobic Higgs boson produced with the Standard Model cross section is excluded at 95% confidence level for all masses below 105.4 GeV/c2.

Search for γγ decays of a Higgs boson in e+e− collisions at √s up to 209 GeV / A Heister, S Schael, R Barate, R Brunelière, I De Bonis, D Decamp, C Goy, S Jezequel, J.-P Lees, F Martin, E Merle, M.-N Minard, B Pietrzyk, B Trocmé, G Boix, S Bravo, M.P Casado, M Chmeissani, J.M Crespo, E Fernandez, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 544:(2002), pp. 16-24. [10.1016/S0370-2693(02)02242-6]

Search for γγ decays of a Higgs boson in e+e− collisions at √s up to 209 GeV

FOCARDI, ETTORE;CIULLI, VITALIANO;
2002

Abstract

A search for events with a photon pair arising from the decay of a Higgs boson produced in association with a fermion pair, is performed in 893 pb−1 of data recorded by the ALEPH detector at LEP at centre-of-mass energies up to 209 GeV. No excess of such events is found over the expected background. An upper limit is derived on the product of the e+e−→HZ cross section and the H→γγ branching fraction as a function of the Higgs boson mass. A fermiophobic Higgs boson produced with the Standard Model cross section is excluded at 95% confidence level for all masses below 105.4 GeV/c2.
2002
544
16
24
A Heister;S Schael;R Barate;R Brunelière;I De Bonis;D Decamp;C Goy;S Jezequel;J.-P Lees;F Martin;E Merle;M.-N Minard;B Pietrzyk;B Trocmé...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/658716
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 25
  • ???jsp.display-item.citation.isi??? 28
social impact