Measurement of the t t-bar production cross section using events in the e mu final state in pp collisions at sqrt(s) = 13 TeV

TL;DR

This paper reports a measurement of the top quark-antiquark pair production cross section at 13 TeV using CMS data, focusing on events with an electron, muon, and jets, confirming Standard Model predictions.

Contribution

First measurement of the t t-bar production cross section at 13 TeV in the e mu final state with detailed analysis and systematic uncertainty evaluation.

Findings

Measured cross section: 815 pb with uncertainties

Results agree with Standard Model predictions

Analysis used 2.2 fb^-1 of CMS data

Abstract

The cross section of top quark-antiquark pair production in proton-proton collisions at sqrt(s) = 13 TeV is measured by the CMS experiment at the LHC, using data corresponding to an integrated luminosity of 2.2 inverse femtobarns. The measurement is performed by analyzing events in which the final state includes one electron, one muon, and two or more jets, at least one of which is identified as originating from hadronization of a b quark. The measured cross section is 815 +/- 9 (stat) +/- 38 (syst) +/- 19 (lumi) pb, in agreement with the expectation from the standard model.