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

TL;DR

This paper presents a calculation of the off-shell ttA process and explores how ratios of cross sections can serve as precise tools to detect potential new physics in the top-quark sector.

Contribution

It introduces a method to use cross section ratios for precision measurements of the ttA process, aiding in constraining new physics beyond the Standard Model.

Findings

Ratios of total and differential cross sections can improve measurement precision.

Theoretical predictions for these ratios can help identify deviations indicating new physics.

The approach enhances the sensitivity of top-quark sector studies.

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.