A$_{C}$ = (N($\Delta \vert $y$\vert >$0) $−$ N($\Delta \vert $y$\vert <$0) ) $/$ (N($\Delta \vert $y$\vert >$0) + N($\Delta \vert $y$\vert <$0) ) where $\Delta \vert $y$\vert $ = $\vert $y$_{{{\mathit t}}}\vert $ $−$ $\vert $y$_{{{\overline{\mathit t}}}}\vert $ is the difference between the absolute values of the top and antitop rapidities and N is the number of events with $\Delta \vert $y$\vert $ positive or negative.

VALUE (%) DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $0.5$ $\pm0.7$ $\pm0.6$ 1 AABOUD 01 AM   LHC ATLAS+CMS combination (lepton + jets) $2.1$ $\pm2.5$ $\pm1.7$ 2 AAD 01 AJ   ATLS ${{\mathit \ell}}{{\mathit \ell}}$ +$\not E_T$ +${}\geq{}$2j $0.6$ $\pm1.0$ 3 AAD 01 I   ATLS ${{\mathit \ell}}$ +$\not E_T$ +${}\geq{}$4j (${}\geq{}$1b) $-1.0$ $\pm1.7$ $\pm0.8$ 4 CHATRCHYAN 01 D   CMS ${{\mathit \ell}}{{\mathit \ell}}$ +$\not E_T$ +${}\geq{}$2j (${}\geq{}$1b) $-1.9$ $\pm2.8$ $\pm2.4$ 5 AAD 01 BK   ATLS ${{\mathit \ell}}$ +$\not E_T$ +${}\geq{}$4j (${}\geq{}$1b) $0.4$ $\pm1.0$ $\pm1.1$ 6 CHATRCHYAN 01 BB   CMS ${{\mathit \ell}}$ +$\not E_T$ +${}\geq{}$4j (${}\geq{}$1b) $-1.3$ $\pm2.8$ ${}^{+2.9}_{-3.1}$ 7 CHATRCHYAN 01 BS   CMS ${{\mathit \ell}}$ +$\not E_T$ +${}\geq{}$4j (${}\geq{}$1b) 1  ATLAS and CMS combination based on the data of AAD 2014I and CHATRCHYAN 2012BB. It takes into account the correlations of the measurements and systematic errors. The result is in agreement with the SM prediction (NLO QCD + NLO EW). 2  AAD 2015AJ based on 4.6 fb${}^{-1}$ of data. After kinematic reconstruction the top quark momenta are corrected for detector resolution and acceptance effects by unfolding, using parton level information of the MC generators. The lepton charge asymmetry is measured as A${}^{{{\mathit \ell}}}_{C}$ = $0.024$ $\pm0.015$ $\pm0.009$. All the measurements are consistent with the SM predictions. 3  Based on 4.7 fb${}^{-1}$ of data. The result is consistent with the SM prediction of A$_{C}$ = $0.0123$ $\pm0.0005$. The asymmetry is $0.011$ $\pm0.018$ if restricted to those events where $\beta _{Z}({{\mathit t}}{{\overline{\mathit t}}}$) $>$ 0.6, which is also consistent with the SM prediction of $0.020$ ${}^{+0.006}_{-0.007}$. 4  Based on 5.0 fb${}^{-1}$ of data. The lepton charge asymmetry is measured as A${}^{{{\mathit \ell}}}_{C}$ = $0.009$ $\pm0.0010$ $\pm0.006$. A${}^{{{\mathit \ell}}}_{C}$ dependences on ${\mathit m}_{{{\mathit t}} {{\overline{\mathit t}}}}$, $\vert $y(${{\mathit t}}{{\overline{\mathit t}}})\vert $, and ${{\mathit p}_{{{T}}}}({{\mathit t}}{{\overline{\mathit t}}}$) are given in Fig. 5. All measurements are consistent with the SM predictions. 5  Based on 1.04 fb${}^{-1}$ of data. The result is consistent with A$_{C}$ = $0.006$ $\pm0.002$ (MC at NLO). No significant dependence of A$_{C}$ on ${\mathit m}_{\mathrm {{{\mathit t}} {{\overline{\mathit t}}}}}$ is observed. 6  Based on 5.0 fb${}^{-1}$ of data at 7 TeV. 7  Based on 1.09 fb${}^{-1}$ of data. The result is consistent with the SM predictions.

References