Measurement of the $t\bar{t}$ inclusive production cross section at 5.02 TeV

TL;DR

This paper reports a measurement of the top quark pair production cross section at 5.02 TeV using CMS data, confirming Standard Model predictions and informing gluon distribution functions.

Contribution

First measurement of $ ext{t}ar{ ext{t}}$ cross section at 5.02 TeV with CMS, providing new data for QCD analysis and parton distribution functions.

Findings

Measured cross section: 69.5 ± 8.4 pb

Result consistent with Standard Model expectations

Provides input for gluon distribution function analysis

Abstract

The top quark pair production $\sigma_{t\bar{t}}$ is measured in pp collisions at a center-of-mass energy of 5.02 TeV. The analyzed data have been collected by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 27.4 /pb. The measurement is performed by analyzing events with at least one charged lepton. The measured cross section is 69.5 $\pm$ 8.4 pb. The result is in agreement with the expectation from the standard model. The impact of the presented measurement on the gluon distribution function is illustrated through a quantum chromodynamic analysis at next-to-next-to-leading order.