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Title: Measurement of the charge asymmetry in top quark pair production in pp collisions at $$\sqrt{s}$$ = 8 TeV using a template method

The charge asymmetry in the production of top quark and antiquark pairs is measured in proton-proton collisions at a center-of-mass energy of 8 TeV. The data, corresponding to an integrated luminosity of 19.6 fb -1 were collected by the CMS experiment at the LHC. Events with a single isolated electron or muon, and four or more jets, at least one of which is likely to have originated from hadronization of a bottom quark, are selected. A template technique is used to measure the asymmetry in the distribution of differences in the top quark and antiquark absolute rapidities. The measured asymmetry is A y c= [0.33_0.26 (stat)_0.33 (syst)]%, which is the most precise result to date. The results are compared to calculations based on the standard model and on several beyond-the-standard-model scenarios.
Authors:
 [1]
  1. Yerevan Physics Inst. (YerPhI) (Armenia). et al.
Publication Date:
Report Number(s):
FERMILAB-PUB-15-381-CMS
Journal ID: ISSN 2470-0010; PRVDAQ; arXiv eprint number arXiv:1508.03862
Grant/Contract Number:
AC02-07CH11359
Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 92; Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CMS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1238406
Alternate Identifier(s):
OSTI ID: 1221346

Khachatryan, Vardan. Measurement of the charge asymmetry in top quark pair production in pp collisions at $\sqrt{s}$ = 8 TeV using a template method. United States: N. p., Web. doi:10.1103/PhysRevD.93.034014.
Khachatryan, Vardan. Measurement of the charge asymmetry in top quark pair production in pp collisions at $\sqrt{s}$ = 8 TeV using a template method. United States. doi:10.1103/PhysRevD.93.034014.
Khachatryan, Vardan. 2015. "Measurement of the charge asymmetry in top quark pair production in pp collisions at $\sqrt{s}$ = 8 TeV using a template method". United States. doi:10.1103/PhysRevD.93.034014.
@article{osti_1238406,
title = {Measurement of the charge asymmetry in top quark pair production in pp collisions at $\sqrt{s}$ = 8 TeV using a template method},
author = {Khachatryan, Vardan},
abstractNote = {The charge asymmetry in the production of top quark and antiquark pairs is measured in proton-proton collisions at a center-of-mass energy of 8 TeV. The data, corresponding to an integrated luminosity of 19.6 fb -1 were collected by the CMS experiment at the LHC. Events with a single isolated electron or muon, and four or more jets, at least one of which is likely to have originated from hadronization of a bottom quark, are selected. A template technique is used to measure the asymmetry in the distribution of differences in the top quark and antiquark absolute rapidities. The measured asymmetry is Ayc= [0.33_0.26 (stat)_0.33 (syst)]%, which is the most precise result to date. The results are compared to calculations based on the standard model and on several beyond-the-standard-model scenarios.},
doi = {10.1103/PhysRevD.93.034014},
journal = {Physical Review D},
number = 11,
volume = 92,
place = {United States},
year = {2015},
month = {12}
}