Top production at large p_t at NLO+NLL accuracy

TL;DR

This paper presents an enhanced FONLL code capable of calculating top quark production distributions with NLO+NLL accuracy, showing no significant difference from fixed order predictions at current LHC energies but potentially relevant at higher transverse momenta.

Contribution

A new version of the FONLL code that includes next-to-leading-log resummation for top quark production differential distributions.

Findings

No significant difference from fixed order predictions at current LHC energies.

Resummation effects may become relevant at transverse momenta of several TeV.

Numerical results provided for LHC and FCC kinematics.

Abstract

We introduce a new version of the FONLL code, now capable of calculating differential distributions for top quark production with next-to-leading-log resummation of log(p_t/m) terms. Numerical results for LHC and FCC kinematics are presented. In the transverse momentum region presently explored by ATLAS and CMS, no significant difference with respect to available fixed order predictions is predicted by FONLL. The large transverse momentum resummation of FONLL may instead become relevant if top is ever measured at transverse momentum scales of several TeV.