Search for CP violation in $ t\overline{t} $ production and decay in proton-proton collisions at $ \sqrt{s}=8 $ TeV - INSPIRE

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Search for CP violation in $t\overline{t}$ production and decay in proton-proton collisions at $\sqrt{s}=8$ TeV

CMS

Collaboration

Nov 27, 2016

32 pages

Published in:

JHEP 03 (2017) 101

Published: Mar 20, 2017

e-Print:

1611.08931 [hep-ex]

DOI:

10.1007/JHEP03(2017)101

Report number:

CMS-TOP-16-001,
CERN-EP-2016-266,
CMS-TO-16-001

Experiments:

CERN-LHC-CMS

View in:

reference search18 citations

Citations per year

Abstract: (Springer)

The results of a first search for CP violation in the production and decay of top quark-antiquark (

t\overline{t}

) 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

\sqrt{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

t\overline{t}

production and decay. The measured asymmetries exhibit no evidence for CP-violating effects, consistent with the expectation from the standard model.

Note:

Replaced with the published version. Added the journal reference and DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-16-001/index.html

CP violation
Hadron-Hadron scattering (experiments)
Top physics
p p: colliding beams
CP: violation
top: pair production
p p: scattering
top: decay
time reversal: operator
asymmetry: CP

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