Measurement of differential cross sections for top quark pair production using the lepton+jets final state in proton-proton collisions at 13 TeV

TL;DR

This paper reports measurements of differential cross sections for top quark pair production in proton-proton collisions at 13 TeV, using CMS data, and compares results with Standard Model predictions.

Contribution

First measurement of differential and double-differential top quark pair production cross sections at 13 TeV in lepton+jets channel with detailed phase space analysis.

Findings

Measured cross sections agree with Standard Model predictions

Provided data at particle and parton levels for various kinematic variables

Enhanced understanding of top quark production dynamics

Abstract

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.