Search for CP violation in t(t)over-bar production and decay in proton-proton collisions at root s=8 TeV

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art%3A10.1007%2FJHEP03%282017%29101.pdf (588.07 KB)

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OA Location

http://link.springer.com/article/10.1007/JHEP03(2017)101

Author(s)

Khachatryan, V

Sirunyan, AM

Tumasyan, A

Adam, W

Asilar, E

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Type

Journal Article

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.

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Date Issued

2017-03-20

Date Acceptance

2017-02-22

Citation

JOURNAL OF HIGH ENERGY PHYSICS, 2017, 2017 (3)

URI

http://hdl.handle.net/10044/1/46068

DOI

https://www.dx.doi.org/10.1007/JHEP03(2017)101

ISSN

1029-8479

Publisher

SPRINGER

Journal / Book Title

JOURNAL OF HIGH ENERGY PHYSICS

Volume

2017

Issue

3

Copyright Statement

© 2017 The Author(s). Open Access.
This article is distributed under the terms of the Creative Commons
Attribution License (
CC-BY 4.0 https://creativecommons.org/licenses/by/4.0/), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.

Identifier

http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000397705400005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202

Subjects

Science & Technology

Physical Sciences

Physics, Particles & Fields

Physics

CP violation

Hadron-Hadron scattering (experiments)

Top physics

LHC

Nuclear & Particles Physics

01 Mathematical Sciences

02 Physical Sciences

Publication Status

Published

Article Number

ARTN 101