Search for charged Higgs bosons in e+ e- collisions at center-of-mass energies from 130-GeV to 172-GeV
Collaboration
13 pages
Published in:
- Phys.Lett.B 418 (1998) 419-429
Report number:
- CERN-PPE-97-129,
- FSU-SCRI-98-45
Experiments:
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Abstract: (Elsevier)
The data collected at centre-of-mass energies ranging from 130 to 172 GeV by ALEPH at LEP, corresponding to an integrated luminosity of 27.5 pb −1 , are analysed in a search for pair-produced charged Higgs bosons H ± . Three analyses are employed to select the τ + ν τ τ − ν ̄ τ , c s ̄ τ − ν ̄ τ and c s ̄ s c ̄ final states. No evidence for a signal is found. Mass limits are set as a function of the branching fraction B (τν) for H ± → τν . Charged Higgs bosons with masses below 52 GeV/ c 2 are excluded at 95% C.L. independently of B (τν) , thus significantly improving on existing limits.- electron positron: colliding beams
- electron positron: annihilation
- Higgs particle: search for
- Higgs particle: charged particle
- Higgs particle: pair production
- Higgs particle: hadronic decay
- Higgs particle: leptonic decay
- Higgs particle: branching ratio
- Higgs particle: mass
- lower limit
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