منابع مشابه
Searches for Charged Higgs Bosons at Lep
The four LEP experiments Aleph, Delphi, L3 and Opal updated their searches for pair production of charged Higgs bosons using more than 210 pb luminosity collected per experiment in the year 2000. Combining it with previously collected data, a significant deviation from background (equivalent to 4.4 σ) is found by the L3 collaboration for low values of the branching ratio H → τν around masses of...
متن کاملSearch for charged Higgs bosons : combined results using LEP data
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for pair-produced charged Higgs bosons in the framework of Two Higgs Doublet Models (2HDMs). The data of the four experiments have been statistically combined. The results are interpreted within the 2HDM for Type I and Type II benchmark scenarios. No statistically significant excess has been observed when compared to the Sta...
متن کاملSearch for Sm and Mssm Higgs Bosons at Lep *
The four LEP experiments (ALEPH, DELPHI, L3 and OPAL) collected around 2.5 fb data in total at energies √ s ≥ 189 GeV of which 536 pb was registered at √ s = 206−209 GeV in 2000. The data are used to search for Higgs bosons in a variety of models. In the Standard Model (SM) the electroweak (EW) symmetry is broken via the Higgs mechanism generating the masses of elementary particles. This implie...
متن کاملFermiophobic Higgs Bosons at LEP
This work describes the results of the searches for a Higgs boson decaying into gauge bosons carried out by the four LEP collaborations: ALEPH, DELPHI, L3 and OPAL. A lower bound of 109.7 GeV is set at 95% confidence level on the mass of a fermiophobic Higgs boson decaying into photons. This mass limit can be extended by considering the Higgs decay mode into weak bosons. Such a combination has ...
متن کاملSearches for Higgs bosons at LEP
Searches for Higgs bosons at LEP are summarized. No Higgs boson has been observed yet. For the Standard model Higgs boson, the lower bound on the mass is 113:3 GeV=c. In the Minimal Supersymmetric Standard Model, for representative scans of the SUSY parameters, the limits on the CPeven and the CP-odd neutral Higgs bosons masses are both 90:5 GeV=c. For the charged Higgs bosons predicted by two-...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2003
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2003.09.057