Measurement of the charge asymmetry in top quark pair production in pp collisions at s =8 TeV using a template method
Type :
Article
Publication Status :
published
Access :
restrictedAccess
Abstract
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 ¼ ½0.33 0.26ðstatÞ 0.33ðsystÞ%, 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.
Source :
Physical Review D - Particles, Fields, Gravitation and Cosmology
Date :
2016-02-01
Volume :
93
Issue :
3
URI
http://hdl.handle.net/10679/4104http://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.034014
Collections
Share this page