"Search For CP Violation In tt¯ Production And Decay In Proton-Proton C" by M M. Baarmand, Vallary Bhopatkar et al.
 

Document Type

Article

Publication Title

Journal of High Energy Physics

Abstract

The results of a first search for CP violation in the production and decay of top quark-antiquark (tt¯) pairs are presented. The search is based on asymmetries in T-odd, triple-product correlation observables, where T is the time-reversal operator. The analysis uses a sample of proton-proton collisions at s=8 TeV collected by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb−1. Events are selected having one electron or muon and at least four jets. The T-odd observables are measured using four-momentum vectors associated with tt¯ production and decay. The measured asymmetries exhibit no evidence for CP-violating effects, consistent with the expectation from the standard model.

DOI

10.1007/JHEP03(2017)101

Publication Date

3-20-2017

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