Results are presented on a search for a light charged Higgs boson that can be produced in the decay of the top quark t → H+b and which, in turn, decays into τ +ν τ . The analysed data correspond to an integrated luminosity of about 2 fb−1 recorded in protonproton 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 {text{t}}overline {text{t}} → H± W ∓ {text{b}}overline {text{b}} and {text{t}}overline {text{t}} → H±H∓ {text{b}}overline {text{b}} . Various final states have been studied separately, all requiring presence of a τ lepton from H+ decays, missing transverse energy, and multiple jets. Upper limits on the branching fraction B(t → H+b) in the range of 2-4 % are established for charged Higgs boson masses between 80 and 160 GeV, under the assumption that B(H+ → τ +ν τ ) = 1.

V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2012). Search for a light charged Higgs boson in top quark decays in pp collisions at s√ = 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 07, 143-143-37 [10.1007/JHEP07(2012)143].

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

BONACORSI, DANIELE;BRAIBANT, SYLVIE;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;GUIDUCCI, LUIGI;
2012

Abstract

Results are presented on a search for a light charged Higgs boson that can be produced in the decay of the top quark t → H+b and which, in turn, decays into τ +ν τ . The analysed data correspond to an integrated luminosity of about 2 fb−1 recorded in protonproton 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 {text{t}}overline {text{t}} → H± W ∓ {text{b}}overline {text{b}} and {text{t}}overline {text{t}} → H±H∓ {text{b}}overline {text{b}} . Various final states have been studied separately, all requiring presence of a τ lepton from H+ decays, missing transverse energy, and multiple jets. Upper limits on the branching fraction B(t → H+b) in the range of 2-4 % are established for charged Higgs boson masses between 80 and 160 GeV, under the assumption that B(H+ → τ +ν τ ) = 1.
2012
V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2012). Search for a light charged Higgs boson in top quark decays in pp collisions at s√ = 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 07, 143-143-37 [10.1007/JHEP07(2012)143].
V. KHACHATRYAN; A.M. SIRUNYAN; A. TUMASYAN; W. ADAM; T. BERGAUER; M. DRAGICEVIC; J. ER¨O; C. FABJAN; M. FRIEDL; R. FRUHWIRTH; V.M. GHETE; J. HAMMER; S...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/127532
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