The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e$^\pm\mu^\mp$, e$^+$e$^-$, or $\mu^+\mu^-$). The measurement is performed using 138 fb$^{-1}$ of proton-proton collision data recorded by the CMS experiment at $\sqrt{s} =$ 13 TeV during the 2016-2018 data-taking period of the CERN LHC. A fiducial phase space is defined such that photons radiated by initial-state particles, top quarks, or any of their decay products are included. An inclusive cross section of 175.2 $\pm$ 2.5 (stat) $\pm$ 6.3 (syst) fb is measured in a signal region with at least one jet coming from the hadronization of a bottom quark and exactly one ...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
Abstract The production cross section of a top quark pair in a...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
Abstract The production cross section of a top quark pair in a...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...
The production cross section of a top quark pair in association with a photon is measured in proton-...