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EnglishA 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 --> gammagamma 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/c(2). (C) 2002 Elsevier Science B.V. All rights reserved.
http://hdl.handle.net/11384/5814| Titolo: | Search for gamma gamma decays of a Higgs boson in e(+)e(-) collisions at root s up to 209 GeV |
| Autori interni: | LIGABUE, FRANCO ROLANDI, LUIGI |
| Data di pubblicazione: | 2002 |
| Rivista: | PHYSICS LETTERS. SECTION B |
| 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 --> gammagamma 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/c(2). (C) 2002 Elsevier Science B.V. All rights reserved. |
| Handle: | http://hdl.handle.net/11384/5814 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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