Fiducial Cross-section Measurements of the Production of a Prompt Photon in Association with a Top-quark Pair at √s
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Author | : Joshua Wyatt Smith |
Publisher | : |
Total Pages | : |
Release | : 2018 |
ISBN-10 | : OCLC:1098269210 |
ISBN-13 | : |
Rating | : 4/5 (10 Downloads) |
Book Synopsis Fiducial Cross-section Measurements of the Production of a Prompt Photon in Association with a Top-quark Pair at √s by : Joshua Wyatt Smith
Book excerpt: The cross sections for top-quark pair production in association with a photon are measured in a fiducial volume with the ATLAS detector at a centre-of-mass energy of 13 TeV. Results are presented using proton-proton collision data collected by the LHC during 2015 and 2016, amounting to a total of 36.1 fb$^{-1}$. This also presents the first $t\bar{t}\gamma$ cross-section measurements performed in the dilepton channels. Exactly one photon is required to have $p_{\text{T}} > 20$ GeV and be isolated based on track and calorimeter information. At least two (four) jets are required in the dilept...