The CMS collaboration, Khachatryan V.Khachatryan V.The CMS collaborationStathes PaganisPAO-TI CHANG et al.YEE HSIUNG et al.KAI-FENG CHEN et al.RONG-SHYANG LU et al.WEI-SHU HOU et al.2021-07-282021-07-28201711266708https://www.scopus.com/inward/record.uri?eid=2-s2.0-85016311144&doi=10.1007%2fJHEP03%282017%29101&partnerID=40&md5=53a69923076d313030f62c4d63cee7c5https://scholars.lib.ntu.edu.tw/handle/123456789/575125The 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.[Figure not available: see fulltext.] ? 2017, The Author(s).journal article10.1007/JHEP03(2017)1012-s2.0-85016311144