Inclusive and differential measurements of the tt charge asymmetry in pp collisions at √s=8 TeV
Type :
Article
Publication Status :
published
Access :
restrictedAccess
Abstract
The tt charge asymmetry is measured in proton–proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb−1. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010±0.0068 (stat)±0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the View the MathML source system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of −0.0035±0.0072 (stat)±0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model.
Source :
Physics Letters B
Date :
2016-06-10
Volume :
757
Publisher :
Elsevier
URI
http://hdl.handle.net/10679/4068http://www.sciencedirect.com/science/article/pii/S0370269316300314
Collections
Share this page