  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 inverse femtobarns,
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[c,y] = [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.
