QCD effects in Higgs boson production at hadron colliders
M. Grazzini
TL;DR
This paper delivers updated, high-precision QCD predictions for Higgs production at the Tevatron and LHC, focusing on gluon-gluon fusion cross sections at NNLL+NNLO with MSTW2008 NNLO PDFs and EW corrections, and examining uncertainties from scale and PDFs/αs. It also investigates the impact of QCD radiative corrections on the Tevatron Higgs search in the H→WW→lνlν channel using fully exclusive NNLO calculations under realistic cuts, comparing with standard Monte Carlo tools. The study demonstrates substantial but increasingly stable higher-order effects under experimental cuts and highlights acceptances discrepancies between PYTHIA and NNLO predictions, underscoring the need for NNLO validation of MC approaches. Overall, the work strengthens the reliability of theoretical inputs for Higgs searches and characterizes residual theoretical uncertainties that affect collider phenomenology.
Abstract
We present updated predictions for Higgs boson production at the Tevatron and the LHC and we review their corresponding uncertainties. We report on a study of the impact of QCD radiative corrections on the Higgs boson search at the Tevatron.