Title of article
Search for charged Higgs bosons in e+e− collisions at energies up to s = 189 GeV
Author/Authors
ALEPH Collaboration، نويسنده , , R. Barate، نويسنده , , D. Decamp، نويسنده , , P. Ghez، نويسنده , , C. Goy، نويسنده , , S. Jezequel، نويسنده , , J.-P. Lees، نويسنده , , F. Martin، نويسنده , , E. Merle، نويسنده , , M.-N. Minard، نويسنده , , B. Pietrzyk، نويسنده , , S. Bravo، نويسنده , , M.P. Casado، نويسنده , , M. Chmeissani، نويسنده , , J.M. Crespo، نويسنده , , E. Fernandez، نويسنده , , M. Fernandez-Bosman، نويسنده , , Ll. Garrido، نويسنده , , E. Graugès، نويسنده , , J. Lopez، نويسنده , , et al.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
11
From page
253
To page
263
Abstract
The data collected at centre-of-mass energies of 188.6 GeV by ALEPH at LEP, corresponding to an integrated luminosity of 176.2 pb−1, are analysed in a search for pair-produced charged Higgs bosons H±. Three analyses are employed to select the τ+νττ−ν̄τ, cs̄τ−ν̄τ and cs̄sc̄ final states. No evidence for a signal is found. Upper limits are set on the production cross section as a function of the branching fraction B(H+→τ+ντ) and of the mass mH±, assuming that the sum of the branching ratios is equal to one. In the framework of a two-Higgs-doublet model, charged Higgs bosons with masses below 65.4 GeV/c2 are excluded at 95% confidence level independently of the decay mode.
Journal title
PHYSICS LETTERS B
Serial Year
2000
Journal title
PHYSICS LETTERS B
Record number
913286
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