"Measurement Of Spin Correlations In tt Production Using The Matrix Ele" by M M. Baarmand, Vallary Bhopatkar et al.
 

Document Type

Article

Publication Title

Physics Letters B

Abstract

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.

DOI

10.1016/j.physletb.2016.05.005

Publication Date

2016

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