Search for a light charged Higgs boson in top quark decays in pp collisions at sqrt(s) = 7 TeV

Abstract : Results are presented on a search for a light charged Higgs boson that can be produced in the decay of the top quark to charged H and b quark and which, in turn, decays into tau and tau neutrino. The analysed data correspond to an integrated luminosity of about 2 inverse femtobarns recorded in proton-proton collisions at sqrt(s) = 7 TeV by the CMS experiment at the LHC. The search is sensitive to the decays of the top quark pairs t anti-t to charged Higgs W b anti-b and t anti-t to charged Higgs b anti-b. Various final states have been studied separately, all requiring presence of a tau lepton from charged Higgs decays, missing transverse energy, and multiple jets. Upper limits on the branching fraction B(t to charged Higgs b) in the range of 2-3% are established for charged Higgs boson masses between 80 and 160 GeV, under the assumption that B(charged Higgs to tau anti-tau neutrino) = 1.
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Journal articles
Journal of High Energy Physics, Institute of Physics (IOP), 2012, 07(2012), pp.143. <10.1007/JHEP07(2012)143>


http://hal.in2p3.fr/in2p3-00757184
Contributor : Dominique Girod <>
Submitted on : Monday, November 26, 2012 - 2:00:24 PM
Last modification on : Monday, November 26, 2012 - 3:00:22 PM

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S. Chatrchyan, M. Besançon, S. Choudhury, M. Dejardin, D. Denegri, et al.. Search for a light charged Higgs boson in top quark decays in pp collisions at sqrt(s) = 7 TeV. Journal of High Energy Physics, Institute of Physics (IOP), 2012, 07(2012), pp.143. <10.1007/JHEP07(2012)143>. <in2p3-00757184>

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