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Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at $\sqrt{s}=8\,\mathrm TeV{}$ with the ATLAS detector

The ATLAS collaboration
Eur.Phys.J. C76 (2016) 87, 2016

Abstract (data abstract)
CERN-LHC. This paper reports inclusive and differential measurements of the $t\bar{t}$ charge asymmetry $A_{\textrm{C}}$ in 20.3 fb$^{-1}$ of $\sqrt{s} = 8$ TeV $pp$ collisions recorded by the ATLAS experiment at the Large Hadron Collider at CERN. Three differential measurements are performed as a function of the invariant mass, transverse momentum and longitudinal boost of the $t\bar{t}$ system. The $t\bar{t}$ pairs are selected in the single-lepton channels ($e$ or $\mu$) with at least four jets, and a likelihood fit is used to reconstruct the $t\bar{t}$ event kinematics. A Bayesian unfolding procedure is performed to infer the asymmetry at parton level from the observed data distribution. The inclusive $t\bar{t}$ charge asymmetry is measured to be $A_{\textrm{C}} = 0.009 \pm 0.005$ (stat.$+$syst.). The inclusive and differential measurements are compatible with the values predicted by the Standard Model.

  • Table 1

    Data from Page 16 of preprint

    10.17182/hepdata.75528.v1/t1

    The inclusive $t\bar{t}$ production charge asymmetry, $A_C$, with statistical and systematic uncertainties combined.

  • Table 2

    Data from Table 4 (top)

    10.17182/hepdata.75528.v1/t2

    Measured charge asymmetry, $A_C$, values for the electron and muon channels combined after unfolding as a function of the $t\bar{t}$...

  • Table 3

    Data from Table 4 (middle)

    10.17182/hepdata.75528.v1/t3

    Measured charge asymmetry, $A_C$, values for the electron and muon channels combined after unfolding as a function of the $t\bar{t}$...

  • Table 4

    Data from Table 4 (bottom)

    10.17182/hepdata.75528.v1/t4

    Measured charge asymmetry, $A_c$, values for the electron and muon channels combined after unfolding as a function of the $t\bar{t}$...

  • Table 5

    Data from Table 5 (top)

    10.17182/hepdata.75528.v1/t5

    Correlation coefficients $\rho_{i,j}$ for the statistical and systematic uncertainties between the $i$-th and $j$-th bin of the differential $A_c$ measurement...

  • Table 6

    Data from Table 5 (bottom left)

    10.17182/hepdata.75528.v1/t6

    Correlation coefficients $\rho_{i,j}$ for the statistical and systematic uncertainties between the $i$-th and $j$-th bin of the differential $A_c$ measurement...

  • Table 7

    Data from Table 5 (bottom right)

    10.17182/hepdata.75528.v1/t7

    Correlation coefficients $\rho_{i,j}$ for the statistical and systematic uncertainties between the $i$-th and $j$-th bin of the differential $A_c$ measurement...

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