Resummation of High Order Corrections in Higgs Boson Plus Jet Production at the LHC

TL;DR

This paper applies TMD resummation to Higgs plus jet production at the LHC, improving predictions of the Higgs transverse momentum distribution by addressing large logarithmic corrections and the Sudakov-shoulder problem.

Contribution

It introduces a novel resummation scale choice in TMD formalism and demonstrates the importance of all-order resummation for accurate Higgs pT predictions.

Findings

Resummation scale should be the jet transverse momentum.

Resummation improves Higgs pT distribution predictions.

Fixed-order calculations suffer from Sudakov-shoulder singularity.

Abstract

We study the effect of multiple parton radiation to Higgs boson plus jet production at the LHC, by applying the transverse momentum dependent (TMD) factorization formalism to resum large logarithmic contributions to all orders in the expansion of the strong interaction coupling. We show that the appropriate resummation scale should be the jet transverse momentum, rather than the partonic center of mass energy which has been normally used in the TMD resummation formalism. Furthermore, the transverse momentum distribution of the Higgs boson, particularly near the lower cut-off applied on the jet transverse momentum, can only be reliably predicted by the resummation calculation which is free of the so-called Sudakov-shoulder singularity problem, present in fixed-order calculations.