Search for neutral Higgs bosons in e + e − collisions at √ s ≤ 196 GeV The ALEPH
نویسنده
چکیده
A preliminary search for neutral Higgs bosons is performed in the data collected by ALEPH in 1999, corresponding to integrated luminosities of 29.0 and 69.5 pb −1 at centre-of-mass energies of 191.6 and 195.6 GeV respectively. No evidence for a signal is found. Combined with the lower energy ALEPH data, this observation leads to a 95% confidence level lower mass limit of 98.8 GeV/c 2 for the Standard Model Higgs boson. In the MSSM, the lower limit for the mass of the lightest CP-even higgs boson h, is found to be 89.3 GeV/c 2 for all values of tan β≥ 1.
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تاریخ انتشار 1999