Top-quark charge asymmetry A_c at the LHC at 13TeV through NNLO QCD and NLO EW Authors: Czakon, Heymes, Mitov, Pagani, Tsinikos, Zaro (2017) Contact: mczakon@physik.rwth-aachen.de poncelet@hep.phy.cam.ac.uk adm74@cam.ac.uk davide.pagani@tum.de ioannis.tsinikos@tum.be marco.zaro@cern.ch When using these results for top-quark pair production please cite : NNLO QCD + NLO EW Charge Asymmetry LHC : arXiv:1711.03945 NNLO QCD Forward-Backward Asymmetry Tevatron : arXiv:1411.3007, arXiv:1601.05375 NNLO QCD + NLO EW differential distributions Tevatron : arXiv:1712.04842 NNLO QCD + NLO EW differential distributions LHC : arXiv:1705.04105 NNLO QCD differential distributions LHC : arXiv:1511.00549, arXiv:1606.03350 These and further results will soon be available here: http://www.precision.hep.phy.cam.ac.uk/results/ -------------------------------------------------------------------------------------------- Top-quark mass : 172.5 GeV Higgs-boson mass : 125.09 GeV W-boson mass : 80.385 GeV Z-boson mass : 91.1876 GeV EW renormalisation : Gmu-scheme Gmu = 1.1663787ยท10^{-5} GeV^{-2} Mtt : Invariant mass distribution of the top-quark pair [binning in GeV: 0-500, 500-750, 750-1000, 1000-1500, 1500-2000 (+ overflow)] PTtt : Transverse momentum distribution of the top-quark pair [binning in GeV: 0-30, 30-120, 120-200 (+ overflow)] Bztt : z-velocity of the top-quark pair [binning: 0-0.3, 0.3-0.6, 0.6-0.8, 0.8-1.0] xsec : Cross section Central scale: mu0 = HT/4 (see 1606.0350 for a discussion of the scale choice) The Scale uncertainty is obtained by taking the maximum and the minimum value of an independent variation by a factor of 2 around mu0. PDF-set: PDF4LHCLUX17 : "LUXqed17_plus_PDF4LHC15_nnlo_100" NNPDF31LUX: "NNPDF31_nnlo_as_0118_luxqed" -------------------------------------------------------------------------------------------- Files with the name "LHC13_Best_NNLOQCD_EW_*.dat" contain the following 5 columns : bin-center central-value error-min error-max bin-width Units: PTtt, Mtt: [GeV] [1] [1] [1] [GeV] Bztt, xsec: [1] [1] [1] [1] [1] -------------------------------------------------------------------------------------------- Files with the name "LHC13_NNLOQCD_EW_*.dat" contain the following 10 columns ( with {a,b} := {muR=a*mu0,muF=b*mu0} ): bin-center {1,1} {1/2,1/2} {2,2} {1/2,1} {1,1/2} {2,1} {1,2} bin-width MCerror Units: PTtt, Mtt: [GeV] [1] [1] [1] [1] [1] [1] [1] [GeV] [1] Bztt, xsec: [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] --------------------------------------------------------------------------------------------- Comments : 1.) The Monte Carlo integration uncertainty is typically smaller than the scale uncertainty, however in a few single bins it can be of similar size as the scale uncertainty. Therefore, for the "LHC13_Best_NNLOQCD_EW_*.dat" files the total uncertainty (error-min, error-max) has been obtained by adding in quadrature the scale uncertainty and the Monte Carlo integration uncertainty. This has been done independently for the lowest and the highest scale. PDF uncertainty is NOT included. 2.) The last bin for Mtt, PTtt observables includes overflow events up to infinity. 3.) For the Mtt, PTtt, Bztt observables, the asymmetries are obtained by dividing full numerator over full denominator, i.e. the asymmetries are NOT expanded in powers of any coupling. For the xsec we also provide the files "*EW_Ex_xsec_*.dat", where we use the expanded definition of the asymmetry. For details on this definition see 1711.03945.