Double resummation for Higgs production

TL;DR

This paper introduces a novel double-resummation approach for Higgs production via gluon fusion, combining threshold and high-energy logarithmic corrections to improve cross section predictions at various collider energies.

Contribution

It presents the first double-resummed prediction for Higgs production, incorporating both threshold and high-energy logarithms to all orders, matched with advanced fixed-order calculations.

Findings

Double resummation adjusts the Higgs production rate by 2% at 13 TeV.

Impact of resummation increases to 10% at 100 TeV.

Resummation improves theoretical accuracy of Higgs cross section predictions.

Abstract

We present the first double-resummed prediction of the inclusive cross section for the main Higgs production channel in proton-proton collisions, namely gluon fusion. Our calculation incorporates to all orders in perturbation theory two distinct towers of logarithmic corrections which are enhanced, respectively, at threshold, i.e. large x, and in the high-energy limit, i.e. small x. Large-x logarithms are resummed to next-to-next-to-next-to-leading logarithmic accuracy, while small-x ones to leading logarithmic accuracy. The double-resummed cross section is furthermore matched to the state-of-the-art fixed-order prediction at next-to-next-to-next-to-leading accuracy. We find that double resummation corrects the Higgs production rate by 2% at the currently explored center-of-mass energy of 13 TeV and its impact reaches 10% at future circular colliders at 100 TeV.