Top charge asymmetry measurement in dileptons at 7 TeV

The measurement of the charge asymmetry in the $t\bar{t}$ dilepton channel has been performed at the LHC proton-proton collision energy of 7 TeV. This measurement has been realized for a total integrated luminosity of 5.0 fb$^{-1}$, corresponding to the dilepton data set collected during the year 2011 by the CMS experiment. The inclusive asymmetry has been measured to be $0.050 \pm 0.043 $(stat)$ ^{+0.010}_{-0.039}$(syst). The measurement is also given in a differential form, as a function of the invariant mass, the transverse momenta and the rapidity of the $t\bar{t}$ system. In addition, the inclusive charge asymmetry based on the lepton rapidities is measured to be $0.010 \pm 0.015 $(stat)$ \pm 0.006$ (syst). All measurements are consistent with their standard model expectations.