par Chatrchyan, Serguei;Charaf, Othman 
;Clerbaux, Barbara ;De Lentdecker, Gilles ;Dero, Vincent ;Gay, Arnaud ;Hammad, Grégory ;Hreus, Tomas ;Marage, Pierre ;Raval, Amita ;Thomas, Laurent ;Vander Velde, Catherine ;Vanlaer, Pascal ; [et al.]
Référence The Journal of high energy physics, 2011, 8, 005
Publication Publié, s.d.
;Clerbaux, Barbara ;De Lentdecker, Gilles ;Dero, Vincent ;Gay, Arnaud ;Hammad, Grégory ;Hreus, Tomas ;Marage, Pierre ;Raval, Amita ;Thomas, Laurent ;Vander Velde, Catherine ;Vanlaer, Pascal ; [et al.]Référence The Journal of high energy physics, 2011, 8, 005
Publication Publié, s.d.
Article révisé par les pairs
| Résumé : | An inclusive search for same-sign top-quark pair production in pp collisions at √s = 7TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb -1. This analysis is motivated by recent studies of pp → tt reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t-channel exchange of a massive neutral vector boson (Z'). Models with such a Z' also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z' mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results. |
