Data collected at centre-of-mass energies of 181-184 GeV by ALEPH at LEP, corresponding to an integrated luminosity of 56.9 pb-1, are analysed in a search for pair-produced charged Higgs bosons H+/-. Three analyses are employed to select the τ+νττ- ν¯τ, cs¯τ- ν¯τ/c¯sτ+ντ and cs¯sc¯ final states. No evidence for a signal is found. Mass limits are set as a function of the branching fraction B(H+-->τ+ντ). Under the assumption that the decay modes considered cover the totality of the possible final states, charged Higgs bosons with masses below 59 GeV/c2 are excluded at 95% C.L. independently of B(H+-->τ+ντ).
Search for charged Higgs bosons in e+e− collisions at = 181–184 GeV
GREGORIO, ANNA;GIANNINI, GIANROSSANO;
1999-01-01
Abstract
Data collected at centre-of-mass energies of 181-184 GeV by ALEPH at LEP, corresponding to an integrated luminosity of 56.9 pb-1, are analysed in a search for pair-produced charged Higgs bosons H+/-. Three analyses are employed to select the τ+νττ- ν¯τ, cs¯τ- ν¯τ/c¯sτ+ντ and cs¯sc¯ final states. No evidence for a signal is found. Mass limits are set as a function of the branching fraction B(H+-->τ+ντ). Under the assumption that the decay modes considered cover the totality of the possible final states, charged Higgs bosons with masses below 59 GeV/c2 are excluded at 95% C.L. independently of B(H+-->τ+ντ).File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.