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Search for charged Higgs bosons in $e^+ e^-$ collisions at energies up to $s$ = 209-GeV

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>5/09/2002
<mark>Journal</mark>Physics Letters B
Issue number1-2
Number of pages13
Pages (from-to)1-13
<mark>Original language</mark>English


A search for charged Higgs bosons produced in pairs is performed with data collected at centre-of-mass energies ranging from 189 to 209 GeV by ALEPH at LEP, corresponding to a total luminosity of 629 pb−1. The three final states , and are considered. No evidence for a signal is found and lower limits are set on the mass mH± as a function of the branching fraction . In the framework of a two-Higgs-doublet model, and assuming , charged Higgs bosons with masses below 79.3 GeV/c2 are excluded at 95% confidence level independently of the branching ratios.