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Elsevier, Physics Letters B, 1-4(534), p. 28-38, 2002

DOI: 10.1016/s0370-2693(02)01572-1

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Search for a Higgs Boson Decaying into Two Photons at LEP

Journal article published in 2002 by P. Achard, R. van Gulik, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, James V. Allaby, A. Aloisio, M. G. Alviggi, H. Anderhub, V. P. Andreev, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

A Higgs particle produced in association with a Z boson and decaying into two photons is searched for in the data collected by the L3 experiment at LEP. All possible decay modes of the Z boson are investigated. No signal is observed in 447.5 pb -1 of data recorded at centre-of-mass energies from 192 GeV up to 209 GeV. Limits on the branching fraction of the Higgs boson decay into two photons as a function of the Higgs mass are derived. A lower limit on the mass of a fermiophobic Higgs boson is set at 105.4 GeV at 95% confidence level.