par Sirunyan, A.M.;Beghin, Diego 
;Bilin, Bugra ;Brun, Hugues ;Clerbaux, Barbara ;De Lentdecker, Gilles ;Delannoy, Hugo ;Dorney, Brian ;Fasanella, Giuseppe ;Favart, Laurent ;Goldouzian, Reza ;Grebenyuk, Anastasia ;Kalsi, Amandeep Kaur ;Lenzi, Thomas ;Luetic, Jelena ;Maerschalk, Thierry ;Marinov, Audrey ;Seva, Tomislav ;Starling, Elizabeth Rose ;Vander Velde, Catherine ;Vanlaer, Pascal ;Vannerom, David ;Yonamine, Ryo ;Zenoni, Florian ; [et al.]
Référence The Journal of high energy physics, 2018, 6, page (1-36)
Publication Publié, 2018-01-01
;Bilin, Bugra ;Brun, Hugues ;Clerbaux, Barbara ;De Lentdecker, Gilles ;Delannoy, Hugo ;Dorney, Brian ;Fasanella, Giuseppe ;Favart, Laurent ;Goldouzian, Reza ;Grebenyuk, Anastasia ;Kalsi, Amandeep Kaur ;Lenzi, Thomas ;Luetic, Jelena ;Maerschalk, Thierry ;Marinov, Audrey ;Seva, Tomislav ;Starling, Elizabeth Rose ;Vander Velde, Catherine ;Vanlaer, Pascal ;Vannerom, David ;Yonamine, Ryo ;Zenoni, Florian ; [et al.]Référence The Journal of high energy physics, 2018, 6, page (1-36)
Publication Publié, 2018-01-01
Article révisé par les pairs
| Résumé : | A search for flavor-changing neutral currents (FCNC) in events with the top quark and the Higgs boson is presented. The Higgs boson decay to a pair of b quarks is considered. The data sample corresponds to an integrated luminosity of√35.9 fb−1 recorded by the CMS experiment at the LHC in proton-proton collisions at s = 13 TeV. Two channels are considered: single top quark FCNC production in association with the Higgs boson (pp → tH), and top quark pair production with FCNC decay of the top quark (t → qH). Final states with one isolated lepton and at least three reconstructed jets, among which at least two are associated with b quarks, are studied. No significant deviation is observed from the predicted background. Observed (expected) upper limits at 95% confidence level are set on the branching fractions of top quark decays, B(t → uH) < 0.47% (0.34%) and B(t → cH) < 0.47% (0.44%), assuming a single nonzero FCNC coupling. |
