par Sirunyan, A.M.;Beghin, Diego
;Bilin, Bugra
;Clerbaux, Barbara
;De Lentdecker, Gilles
;Delannoy, Hugo
;Dorney, Brian
;Favart, Laurent
;Grebenyuk, Anastasia
;Kalsi, Amandeep Kaur
;Moureaux, Louis
;Popov, Andrey
;Postiau, Nicolas
;Starling, Elizabeth Rose
;Thomas, Laurent
;Vander Velde, Catherine
;Vanlaer, Pascal
;Vannerom, David
;Malara, Andrea
; [et al.]
Référence The Journal of high energy physics, 2020, 6, 146
Publication Publié, 2020-06-01


















Référence The Journal of high energy physics, 2020, 6, 146
Publication Publié, 2020-06-01
Article révisé par les pairs
Résumé : | Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of |