Searches for Higgs boson decaying into photons

The analysis of photon pair events arising from a Higgs boson produced in association with a fermion pair via the Higgs-strahlung process e+e- to Hff, with ff=nu-nu, e+e-, mu+mu-, tau+tau- or qq is performed in the data sample collected at LEP with the ALEPH detector in 2000. Four events are selected in the data, while 5.2 events are expected from standard model processes. An upper limit is derived and combined with previous LEP energies, as a function of the Higgs boson mass, on the product of the e+e-to Hff cross section and the H to gamma-gamma branching fraction. In particular, 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.