Complete NLO corrections to $t\bar{t}\gamma$ and $t\bar{t}\gamma \gamma$

Abstract

In this contribution we discuss recent progress in associated top-quark pair production with one or two isolated photons, $pp\to t\bar{t}\gamma (\gamma )$. The focus is the simultaneous inclusion of higher-order effects and photon radiation in the production of the top-quark pair and in the decay processes. This allows us to quantify the importance of photon radiation in decay processes and the size of the so-called complete NLO corrections in realistic final states.

arXiv comment7 pages, 3 Figures, 1 Tables, Talk at the 17th International Workshop on Top Quark Physics (Top2024), 22-27 September 2024

References in corpus (16)

• Collier: a fortran-based Complex One-Loop LIbrary in Extended Regularizations
• Reducing full one-loop amplitudes to scalar integrals at the integrand level
• CutTools: a program implementing the OPP reduction method to compute one-loop amplitudes
• OneLOop: for the evaluation of one-loop scalar functions
• RECOLA: REcursive Computation of One-Loop Amplitudes
• Recursive generation of one-loop amplitudes in the Standard Model
• Polarizing the Dipoles
• $CP$ Properties of Higgs Boson Interactions with Top Quarks in the $t\bar{t}H$ and $tH$ Processes Using $H\to \gamma \gamma$ with the ATLAS Detector
• Measurements of $\mathrm{t}\bar{\mathrm{t}}$H production and the CP structure of the Yukawa interaction between the Higgs boson and the top quark in the diphoton decay channel
• On the computation of multigluon amplitudes
• Multi-jet Production in Hadron Collisions
• Observation of top-quark pair production in association with a photon and measurement of the $t\bar{t}\gamma$ production cross section in pp collisions at $\sqrt{s}=7$ TeV using the ATLAS detector
• Complete Nagy-Soper subtraction for next-to-leading order calculations in QCD
• Kaleu: a general-purpose parton-level phase space generator
• Complete NLO corrections to top-quark pair production with isolated photons
• Associated production of a top-quark pair with two isolated photons at the LHC through NLO in QCD