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Search for Charged Higgs Bosons in Decays of Top Quarks in pp Collisions at s√=1.96  TeV

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2009, vol. 103, no. 10, p. 101803
Abstract We report on the first direct search for charged Higgs bosons decaying into cs in tt events produced by pp collisions at s√=1.96  TeV. The search uses a data sample corresponding to an integrated luminosity of 2.2  fb−1 collected by the CDF II detector at Fermilab and looks for a resonance in the invariant mass distribution of two jets in the lepton+jets sample of tt candidates. We observe no evidence of charged Higgs bosons in top quark decays. Hence, 95% upper limits on the top quark decay branching ratio are placed at B(t→H+b)< 0.1 to 0.3 for charged Higgs boson masses of 60 to 150  GeV/c2 assuming B(H+→cs¯)=1.0. The upper limits on B(t→H+b) are also used as model-independent limits on the decay branching ratio of top quarks to generic scalar charged bosons beyond the standard model.
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CDF COLLABORATION. Search for Charged Higgs Bosons in Decays of Top Quarks in pp Collisions at s√=1.96  TeV. In: Physical Review Letters, 2009, vol. 103, n° 10, p. 101803. doi: 10.1103/PhysRevLett.103.101803 https://archive-ouverte.unige.ch/unige:38623

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Deposited on : 2014-07-14

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