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.

Search for gamma gamma decays of a Higgs boson in e(+)e(-) collisions at root s up to 209 GeV / A. HEISTER AND S., S., R., B., R., B., I., D.B., D., D., C., G., S., J., J. P., L., F., M., E., M., M. N., M., B. PIETRZYK AND B., T., G., B., S., B., M. P., C., M., C., J. M., C., E., F., M., F.B., Garrido, L.L., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 544:1-2(2002), pp. 16-24. [10.1016/S0370-2693(02)02242-6]

Search for gamma gamma decays of a Higgs boson in e(+)e(-) collisions at root s up to 209 GeV

CREANZA, Donato Maria;DE FILIPPIS, Nicola;IASELLI, Giuseppe;Maggi, Giorgio Pietro;
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 --> 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.
2002
Search for gamma gamma decays of a Higgs boson in e(+)e(-) collisions at root s up to 209 GeV / A. HEISTER AND S., S., R., B., R., B., I., D.B., D., D., C., G., S., J., J. P., L., F., M., E., M., M. N., M., B. PIETRZYK AND B., T., G., B., S., B., M. P., C., M., C., J. M., C., E., F., M., F.B., Garrido, L.L., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 544:1-2(2002), pp. 16-24. [10.1016/S0370-2693(02)02242-6]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/3049
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