Search for /γγ decays of a Higgs boson in e+e- collisions at /sqrt(s) up to 209 GeV
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.
- Publication:
-
Physics Letters B
- Pub Date:
- September 2002
- DOI:
- 10.1016/S0370-2693(02)02242-6
- Bibcode:
- 2002PhLB..544...16A