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

AutorCDF Collaboration; Cabrera, Susana ; Cuenca Almenar, Cristóbal ; Álvarez González, B.; Casal, Bruno ; Cuevas, Javier ; Gómez, G. ; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío ; Aaltonen, T.
Fecha de publicación4-sep-2009
EditorAmerican Physical Society
CitaciónPhysical Review Letters 103 (10): 101803 (2009)
ResumenWe 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/c(2) 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.
Versión del editorhttp://dx.doi.org/ 10.1103/PhysRevLett.103.101803
URIhttp://hdl.handle.net/10261/22196
DOI10.1103/PhysRevLett.103.101803
ISSN0031-9007
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