par Khachatryan, Vardan;Barria, Patrizia ;Brun, Hugues ;Caillol, Cécile ;Clerbaux, Barbara ;De Lentdecker, Gilles ;Fasanella, Giuseppe ;Favart, Laurent ;Gay, Arnaud ;Grebenyuk, Anastasia ;Karapostoli, Georgia ;Lenzi, Thomas ;Leonard, Alexandre ;Maerschalk, Thierry ;Marinov, Audrey ;Pernie, Luca ;Randle-Conde, Aidan Sean ;Reis, Thomas ;Seva, Tomislav ;Vander Velde, Catherine ;Vanlaer, Pascal ;Yonamine, Ryo ;Zenoni, Florian ;Zhang, Fengwangdong ; [et al.]
Référence The Journal of high energy physics, 2015, 12, 178
Publication Publié, 2015
Référence The Journal of high energy physics, 2015, 12, 178
Publication Publié, 2015
Article révisé par les pairs
Résumé : | A search for a light charged Higgs boson, originating from the decay of a topquark and subsequently decaying into a charm quark and a strange antiquark, is presented.The data used in the analysis correspond to an integrated luminosity of 19.7 fb−1recordedin proton-proton collisions at √s = 8 TeV by the CMS experiment at the LHC. The searchis performed in the process t¯t → W±bH∓b, where the W boson decays to a lepton (electron ¯or muon) and a neutrino. The decays lead to a final state comprising an isolated lepton,at least four jets and large missing transverse energy. No significant deviation is observedin the data with respect to the standard model predictions, and model-independent upperlimits are set on the branching fraction B(t → H+b), ranging from 1.2 to 6.5% for a chargedHiggs boson with mass between 90 and 160 GeV, under the assumption that B(H+ → c¯s)= 100%. |