par Khachatryan, Vardan;Barria, Patrizia 
;Caillol, Cécile ;Clerbaux, Barbara ;De Lentdecker, Gilles ;Delannoy, Hugo ;Fasanella, Giuseppe ;Favart, Laurent ;Gay, Arnaud ;Grebenyuk, Anastasia ;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 Physics letters. Section B, 757, page (154-179)
Publication Publié, 2016-06
;Caillol, Cécile ;Clerbaux, Barbara ;De Lentdecker, Gilles ;Delannoy, Hugo ;Fasanella, Giuseppe ;Favart, Laurent ;Gay, Arnaud ;Grebenyuk, Anastasia ;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 Physics letters. Section B, 757, page (154-179)
Publication Publié, 2016-06
Article révisé par les pairs
| Résumé : | The tt- charge asymmetry is measured in proton-proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb-1. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010±0.0068 (stat)±0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the tt- system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of -0.0035±0.0072 (stat)±0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model. © 2016 CERN for the benefit of the CMS Collaboration. |
