Search for charged Higgs bosons in e(+)e(-) collisions at root s=181-184 GeV
1999
Data collected at centre-of-mass energies of 181-184 GeV by
ALEPHat LEP, corresponding to an integrated luminosity of 56.9 pb(-1), are analysed in a search for pair-produced charged
Higgs bosonsH +/-. Three analyses are employed to select the tau(+)v(tau)tau(-)(v)
overbar(tau), c (s)
overbar tau(-)(v)
overbar(tau)/(c)
overbar s tau(+)v(tau) and c (s)
overbar s (c)
overbar final states. No evidence for a signal is found-Mass limits are set as a function of the
branching fractionB(H+ --> tau(+) v(tau)). Under the assumption that the decay modes considered cover the totality of the possible final states, charged
Higgs bosonswith masses below 59 GeV/c(2) are excluded at 95% C.L. independently of B(H+ --> tau(+)v(tau)). (C) 1999 Elsevier Science B.V. All rights reserved.
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