HIGLU: A Program for the Calculation of the Total Higgs Production Cross Section at Hadron Colliders via Gluon Fusion including QCD Corrections

TL;DR

HIGLU provides a practical, input-driven tool to compute the total Higgs production cross section via gluon fusion at hadron colliders, incorporating next-to-leading order QCD corrections for both SM and MSSM neutral Higgs bosons. It models the cross section as a LO term plus virtual and real emission corrections, leveraging heavy-quark loop amplitudes and gluon luminosities with flexible renormalization and factorization scales. The package also delivers Higgs-to-gluon decay widths at NLO, and is designed to interface with user-supplied parton distributions and MSSM mass/coupling corrections. An accompanying appendix demonstrates input and output formats, underscoring the program’s utility for precise Higgs predictions at colliders.

Abstract

A program for the calculation of the total Higgs production cross section via gluon fusion at hadron colliders including next--to--leading order QCD corrections is presented. It is suitable especially for Standard Model Higgs bosons and the neutral Higgs particles of the minimal supersymmetric extension. The program provides a model--independent calculation for scalar [\CP--even] as well as pseudoscalar [\CP--odd] Higgs bosons including the contributions of virtual top and bottom quarks inside the loop coupled to the Higgs particles. The relevant input parameters can be chosen from an input file. As a special case the minimal supersymmetric extension of the Standard Model can be investigated. The corresponding couplings are implemented including the leading higher order corrections.