BSM effects on the Higgs transverse-momentum spectrum in an EFT approach

TL;DR

This paper investigates how effective field theory operators modify the Higgs transverse-momentum spectrum in gluon fusion, providing resummed predictions at NLO+NLL accuracy to aid experimental analyses.

Contribution

It introduces a systematic EFT framework to incorporate high-scale physics effects into Higgs pT predictions with resummed calculations at NLO+NLL.

Findings

EFT operators significantly alter the Higgs pT distribution shape.

Resummed predictions improve the accuracy of theoretical models.

Study highlights importance for LHC Run II analyses.

Abstract

Effective Field Theories offer a consistent bottom-up approach to parametrise small deviations from Standard Model predictions. In this work we report on the application of the Effective Field Theory to shed light on effects from high-scale physics beyond the Standard Model on the Higgs transverse-momentum spectrum. The Standard Model prediction for the transverse-momentum distribution in Higgs boson production through gluon fusion is augmented by three new dimension-six operators, implying the modification of the top and bottom Yukawa couplings, and the inclusion of a point-like Higgs-gluon coupling. We present resummed transverse-momentum spectra including these operators at NLO+NLL accuracy and study their effects on the shape of the distribution. The proper parametrization of such effects becomes increasingly important for experimental analyses in Run II of the LHC.