Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-09-24
Eur.Phys.J.C62:333-353,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
35 pages, 6 figures; v2: update to MSTW2008 PDFs, detailed comparison with moment-space formalism
Scientific paper
10.1140/epjc/s10052-009-1030-2
We use renormalization-group methods in effective field theory to improve the theoretical prediction for the cross section for Higgs-boson production at hadron colliders. In addition to soft-gluon resummation at NNNLL, we also resum enhanced contributions of the form (C_A\pi\alpha_s)^n, which arise in the analytic continuation of the gluon form factor to time-like momentum transfer. This resummation is achieved by evaluating the matching corrections arising at the Higgs-boson mass scale at a time-like renormalization point \mu^2<0, followed by renormalization-group evolution to \mu^2>0. We match our resummed result to NNLO fixed-order perturbation theory and give numerical predictions for the total production cross section as a function of the Higgs-boson mass. Resummation effects are significant even at NNLO, where our improved predictions for the cross sections at the Tevatron and the LHC exceed the fixed-order predictions by about 13% and 8%, respectively, for m_H=120 GeV. We also discuss the application of our technique to other time-like processes such as Drell-Yan production, e^+ e^- --> hadrons, and hadronic decays of the Higgs boson.
Ahrens Valentin
Becher Thomas
Neubert Matthias
Yang Li Lin
No associations
LandOfFree
Renormalization-Group Improved Prediction for Higgs Production at Hadron Colliders does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Renormalization-Group Improved Prediction for Higgs Production at Hadron Colliders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Renormalization-Group Improved Prediction for Higgs Production at Hadron Colliders will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-181247