Cross section ratios as a precision tool for $t\bar{t}\gamma$

Abstract

We report on our recent calculation for the off-shell ttA process and its potential for precision measurements by constructing ratios of total and differential cross sections. Precise theoretical predictions for these ratios can help to constrain new physics contributions in the top-quark sector of the Standard Model.

Comments: 4 pages, 5 figures, Proceedings of the 31st Rencontres de Blois on "Particle Physics and Cosmology" (Blois2019)