Higgs production through gluon fusion: updated cross sections at the Tevatron and the LHC

TL;DR

This paper provides updated theoretical predictions for Higgs boson production cross sections via gluon fusion at the Tevatron and LHC, incorporating advanced calculations and latest parton distribution functions.

Contribution

It introduces the most recent calculations including soft-gluon resummation, bottom-quark contributions, and electroweak effects, with updated parton distribution functions for more accurate cross sections.

Findings

Cross section increases at the LHC due to new PDFs.

Tevatron cross section predictions vary by up to ±9%.

LHC predictions show a significant increase, especially at 10 TeV.

Abstract

We present updated predictions for the total cross section for Higgs boson production by gluon--gluon fusion in hadron collisions. Our calculation includes the most advanced theoretical information available at present for this observable: soft-gluon resummation up to next-to-next-to-leading logarithmic accuracy, the exact treatment of the bottom-quark contribution up to next-to-leading order, and two-loop electroweak effects. We adopt the most recent parametrization of parton distribution functions at next-to-next-to-leading order, and we evaluate the corresponding uncertainties. In comparison with our previous central predictions, at the Tevatron the difference ranges from +9% for m_H=115 GeV to -9% for m_H=200 GeV. At the LHC the cross section is instead significantly increased. The effect goes from +30% for m_H=115 GeV to +9% for m_H=300 GeV, and is mostly due to the new parton distribution functions. We also provide new predictions for the LHC at sqrt{s}=10 TeV.