Measurement of the top quark pair production cross section in proton-proton collisions at sqrt(s) = 13 TeV

TL;DR

This paper reports the first measurement of top quark pair production cross section at 13 TeV proton-proton collisions, using CMS data, with results consistent with the Standard Model predictions.

Contribution

It provides the first measurement of the top quark pair production cross section at 13 TeV, expanding the experimental data at higher energies.

Findings

Measured cross section: 746 pb with uncertainties

Results agree with Standard Model expectations

Used events with electron-muon pairs and jets

Abstract

The top quark pair production cross section is measured for the first time in proton-proton collisions at sqrt(s) = 13 TeV by the CMS experiment at the CERN LHC, using data corresponding to an integrated luminosity of 43 inverse picobarns. The measurement is performed by analyzing events with at least one electron and one muon of opposite charge, and at least two jets. The measured cross section is 746 +/- 58 (stat) +/- 53 (syst) +/- 36 (lumi) pb, in agreement with the expectation from the standard model.