par Khachatryan, Vardan;Barria, Patrizia ;Brun, Hugues ;Caillol, Cécile ;Clerbaux, Barbara ;Aabraham, Michael M.H.;Fasanella, Giuseppe ;Favart, Laurent ;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 ; [et al.]
Référence Physics letters. Section B, 758, page (321-346)
Publication Publié, 2016
Référence Physics letters. Section B, 758, page (321-346)
Publication Publié, 2016
Article révisé par les pairs
Résumé : | The consistency of the spin correlation strength in top quark pair production with the standard model (SM) prediction is tested in the muon+jets final state. The events are selected from pp collisions, collected by the CMS detector, at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb-1. The data are compared with the expectation for the spin correlation predicted by the SM and with the expectation of no correlation. Using a template fit method, the fraction of events that show SM spin correlations is measured to be 0.72±0.08(stat)+0.15 -0.13(syst), representing the most precise measurement of this quantity in the muon+jets final state to date. © 2016 The Author. |