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Differential and double-differential cross sections for the production of top quark pairs in proton-proton collisions at 13 TeV are measured as a function of jet multiplicity and of kinematic variables of the top quarks and the top quark-antiquark system. This analysis is based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 2.3 inverse femtobarns. The measurements are performed in the lepton+jets decay channels with a single muon or electron in the final state. The differential cross sections are presented at particle level, within a phase space close to the experimental acceptance, and at parton level in the full phase space. The results are compared to several standard model predictions.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Absolute cross section at particle level.
Covariance matrix of absolute cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Normalized cross section at particle level.
Covariance matrix of normalized cross section at particle level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Absolute cross section at parton level.
Covariance matrix of absolute cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Normalized cross section at parton level.
Covariance matrix of normalized cross section at parton level.
Jet multiplicity distributions in top quark pair (t t-bar) events are measured in pp collisions at a centre-of-mass energy of 8 TeV with the CMS detector at the LHC using a data set corresponding to an integrated luminosity of 19.7 inverse femtobarns. The measurement is performed in the dilepton decay channels (e+ e-, mu+ mu-, and e+/- mu-/+). The absolute and normalized differential cross sections for t t-bar production are measured as a function of the jet multiplicity in the event for different jet transverse momentum thresholds and the kinematic properties of the leading additional jets. The differential t t-bar b and t t-bar b b-bar cross sections are presented for the first time as a function of the kinematic properties of the leading additional b jets. Furthermore, the fraction of events without additional jets above a threshold is measured as a function of the transverse momenta of the leading additional jets and the scalar sum of the transverse momenta of all additional jets. The data are compared and found to be consistent with predictions from several perturbative quantum chromodynamics event generators and a next-to-leading order calculation.
Absolute differential ttbar cross sections as a function of the jet multiplicity for jets with pt > 30GeV, along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space of the ttbar decay products and the additional jets.
Normalized differential ttbar cross sections as a function of the jet multiplicity for jets with pt > 30GeV, along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space of the ttbar decay products and the additional jets.
Absolute differential ttbar cross sections as a function of the jet multiplicity for jets with pt > 60GeV, along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space of the ttbar decay products and the additional jets.
Normalized differential ttbar cross sections as a function of the jet multiplicity for jets with pt > 60GeV, along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space of the ttbar decay products and the additional jets.
Absolute differential ttbar cross sections as a function of the jet multiplicity for jets with pt > 100GeV, along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space of the ttbar decay products and the additional jets.
Normalized differential ttbar cross sections as a function of the jet multiplicity for jets with pt > 100GeV, along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space of the ttbar decay products and the additional jets.
Absolute differential ttbar cross sections as a function of the pt of the leading additional jet in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the pt of the leading additional jet in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the eta of the leading additional jet in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the eta of the leading additional jet in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the pt of the subleading additional jet in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the pt of the subleading additional jet in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of |eta| of the subleading additional jet in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of |eta| of the subleading additional jet in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the invariant mass of the two leading additional jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the invariant mass of the two leading additional jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the angle DeltaR between the two leading additional jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the angle DeltaR between the two leading additional jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the observable HT, along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the observable HT, along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the pt of the leading additional jet j1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at the particle level in the full phase space of the ttbar system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of pt of the leading additional jet j1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at the particle level in the full phase space of the ttbar system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of |eta| of the leading additional jet j1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at the particle level in the full phase space of the ttbar system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of |eta| of the leading additional jet j1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at the particle level in the full phase space of the ttbar system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of the pt of the subleading additional jet j2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at the particle level in the full phase space of the ttbar system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of pt of the subleading additional jet j2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at the particle level in the full phase space of the ttbar system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of |eta| of the subleading additional jet j2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at the particle level in the full phase space of the ttbar system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of |eta| of the subleading additional jet j2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at the particle level in the full phase space of the ttbar system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of the invariant mass of the two leading additional jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of tt system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of the invariant mass of the two leading additional jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of tt system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of the angle DeltaR between the two leading additional jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of tt system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of the angle DeltaR between the two leading additional jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of tt system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of the observable HT, along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of tt system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of the observable HT, along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of tt system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of the pt of the leading additional b-jet b1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the pt of the leading additional b-jet b1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of |eta| of the leading additional b-jet b1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of |eta| of the leading additional b-jet b1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the pt of the subleading additional b-jet b2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the pt of the subleading additional b-jet b2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of |eta| of the leading additional b-jet b2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of |eta| of the leading additional b-jet b2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the invariant mass of the two leading additional b-jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the invariant mass of the two leading additional b-jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the angle DeltaR between the two leading additional b-jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Normalized differential ttbar cross sections as a function of the angle DeltaR between the two leading additional b-jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the visible phase space.
Absolute differential ttbar cross sections as a function of the pt of the leading additional b-jet b1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of the pt of the leading additional b-jet b1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of |eta| of the leading additional b-jet b1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of |eta| of the leading additional b-jet b1 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of the pt of the subleading additional b-jet b2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of the pt of the subleading additional b-jet b2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of |eta| of the leading additional b-jet b2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of |eta| of the leading additional b-jet b2 in the event (not coming from the top quark decay products), along with their statistical, systematic, and total uncertainties. The results are presented at particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of the invariant mass of the two leading additional b-jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of the invariant mass of the two leading additional b-jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Absolute differential ttbar cross sections as a function of the angle DeltaR between the two leading additional b-jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Normalized differential ttbar cross sections as a function of the angle DeltaR between the two leading additional b-jets in the event (not coming from the top quark decay products), along with their statistical and systematic uncertainties. The results are presented at the particle level in the full phase space of the tt system, corrected for acceptance and branching fractions.
Gap fraction $f(p_T^{\rm jet})$ as function of leading additional jet transverse momentum $p_T^{\rm jet}$.
Gap fraction $f(p_T^{\rm jet})$ as function of leading additional jet transverse momentum $p_T^{\rm jet}$ in the region $|\eta|<0.8$.
Gap fraction $f(p_T^{\rm jet})$ as function of leading additional jet transverse momentum $p_T^{\rm jet}$ in the region $0.8<|\eta|<1.5$.
Gap fraction $f(p_T^{\rm jet})$ as function of leading additional jet transverse momentum $p_T^{\rm jet}$ in the region $1.5<|\eta|<2.4$.
Gap fraction $f(p_T^{\rm jet_2})$ as function of subleading additional jet transverse momentum $p_T^{\rm jet_2}$.
Gap fraction $f(p_T^{\rm jet_2})$ as function of subleading additional jet transverse momentum $p_T^{\rm jet_2}$ in the region $|\eta|<0.8$.
Gap fraction $f(p_T^{\rm jet_2})$ as function of subleading additional jet transverse momentum $p_T^{\rm jet_2}$ in the region $0.8<|\eta|<1.5$.
Gap fraction $f(p_T^{\rm jet_2})$ as function of subleading additional jet transverse momentum $p_T^{\rm jet_2}$ in the region $1.5<|\eta|<2.4$.
Gap fraction $f(H_T)$ as function of $H_T$.
Gap fraction $f(H_T)$ as function of $H_T$ in the region $|\eta|<0.8$.
Gap fraction $f(H_T)$ as function of $H_T$ in the region $0.8<|\eta|<1.5$.
Gap fraction $f(H_T)$ as function of $H_T$ in the region $1.5<|\eta|<2.4$.
Statistical covariance matrix for the absolute differential cross-section as a function of the number of jets with pt>30 GeV (see also table B.1).
Statistical covariance matrix for the normalized differential cross-section as a function of the number of jets with pt>30 GeV.
Statistical covariance matrix for the absolute differential cross-section as a function of the number of jets with pt>60 GeV (see also table B.1).
Statistical covariance matrix for the normalized differential cross-section as a function of the number of jets with pt>60 GeV.
Statistical covariance matrix for the absolute differential cross-section as a function of the number of jets with pt>100 GeV (see also table B.1).
Statistical covariance matrix for the normalized differential cross-section as a function of the number of jets with pt>100 GeV.
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