Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV

Khachatryan, Vardan and Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Md. Ali, Mohd. Adli (2017) Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV. Journal of High Energy Physics, 2017 (3). pp. 1-34. ISSN 1029-8479

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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.

Item Type:	Article (Journal)
Additional Information:	7861/63064
Uncontrolled Keywords:	CP violation, Hadron-hadron scattering (experiments), Top physics
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	05 Nov 2018 15:47
Last Modified:	05 Nov 2018 15:47
URI:	http://irep.iium.edu.my/id/eprint/63064

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