On Higgs+jet production at next-to-leading power accuracy

TL;DR

This paper computes next-to-leading power corrections for Higgs plus one jet production at hadron colliders, providing analytic expressions and revealing the role of helicity configurations in the corrections.

Contribution

It introduces a method using shifted spinors in helicity amplitudes to efficiently calculate next-to-leading power corrections in Higgs+jet production.

Findings

Derived compact analytic expressions for next-to-leading power leading logarithms.

Established the connection between shifted dipole spinors and radiative amplitudes.

Found that next-to-maximal helicity violating amplitudes are not involved in these corrections.

Abstract

We present computation of the next-to-leading power corrections for Higgs plus one jet production in a hadron collider via gluon fusion channel. Shifting of spinors in the helicity amplitudes without additional radiation captures the leading next-to-soft radiative behaviour and makes the calculation tractable. We establish the connection between the shifted dipole spinors and the colour ordered radiative amplitudes. We find that next-to-maximal helicity violating amplitudes do not play a role in this correction. Compact analytic expressions of next-to-leading power leading logarithms coming from different helicity configurations are shown.