NNLO fits of top-quark mass using total, single-differential and double-differential $t\bar{t}+X$ cross-section data

Abstract

We describe the fits of the top-quark mass value at NNLO using as input the double-differential distributions in rapidity and invariant mass of $t\bar{t}$ pairs obtained by the ATLAS and CMS collaborations from unfolding of their experimental data to the parton level, compared to NNLO theory predictions. We consider different state-of-the-art PDF sets, finding results of the fits compatible among each other within uncertainties. On the other hand, we observe some tension among the fits to different datasets.

Comments: Contribution to proceedings of the 42nd International Conference on High Energy Physics (ICHEP 2024), 18-24 July 2024