Higgs boson production at large transverse momentum within SMEFT: analytical results

TL;DR

This paper provides analytical one-loop QCD amplitude expressions for Higgs production at high transverse momentum in hadronic collisions within SMEFT, including effects of all relevant dimension-six operators, highlighting the significant impact of the chromomagnetic operator.

Contribution

It offers the first complete analytical results for Higgs production amplitudes in SMEFT at high pT, incorporating all dimension-six operators and analyzing their effects.

Findings

Chromomagnetic operator has a large effect at high pT.

Analytical expressions include all relevant dimension-six operators.

Results confirm the importance of considering the chromomagnetic operator in high pT Higgs studies.

Abstract

We consider Higgs boson production through gluon fusion at large transverse momentum in hadronic collisions. We present the analytic expressions of the relevant one-loop QCD amplitudes including the effects of the complete set of dimension-six operators. The latter correspond to modifications of the top and bottom Yukawa couplings, to an effective point-like Higgs coupling to gluons and to the chromomagnetic operator of the top quark. The quantitative impact of the chromomagnetic operator is also studied. Our results confirm previous findings that the effect of the chromomagnetic operator at high $p_T$ can be large and should not be neglected.