Two-loop amplitudes for processes $g g \to H g, q g \to H q$ and $q \bar{q} \to H g$ at large Higgs transverse momentum

TL;DR

This paper calculates two-loop QCD corrections for key Higgs production processes at high transverse momentum, enhancing the precision of theoretical predictions for Higgs boson behavior in high-energy collisions.

Contribution

It provides the first computation of two-loop amplitudes for these processes in the large Higgs transverse momentum limit, a crucial step for accurate modeling.

Findings

Two-loop amplitudes computed for $g g o H g$, $q g o H q$, and $q ar{q} o H g$ processes.

Results improve theoretical predictions of Higgs transverse momentum distribution at high $p_ op$.

Enhances understanding of QCD effects in Higgs production at large transverse momentum.

Abstract

We compute the two-loop QCD corrections to amplitudes for processes $g g \to H g, q g \to H q$ and $q \bar{q} \to H g$ in the limit when the Higgs transverse momentum is larger than the top quark mass, $p_\perp \gg m_t$. These amplitudes are important ingredients for understanding higher-order QCD effects on Higgs transverse momentum distribution at large $p_\perp$.