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Title: QCD and electroweak interference in Higgs production by gauge boson fusion

Abstract

We explicitly calculate the contribution to Higgs production at the LHC from the interference between gluon fusion and weak vector boson fusion, and compare it to the pure QCD and pure electroweak result. While the effect is small at tree level, we speculate it will be significantly enhanced by loop effects.

Authors:
;  [1]
  1. Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, CB 3 0HE Cambridge (United Kingdom)
Publication Date:
OSTI Identifier:
21011023
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.75.037301; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CERN LHC; COMPARATIVE EVALUATIONS; ELECTROMAGNETIC INTERACTIONS; GLUONS; HIGGS BOSONS; HIGGS MODEL; PARTICLE PRODUCTION; QUANTUM CHROMODYNAMICS; WEAK INTERACTIONS

Citation Formats

Andersen, Jeppe R., and Smillie, Jennifer M. QCD and electroweak interference in Higgs production by gauge boson fusion. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.037301.
Andersen, Jeppe R., & Smillie, Jennifer M. QCD and electroweak interference in Higgs production by gauge boson fusion. United States. doi:10.1103/PHYSREVD.75.037301.
Andersen, Jeppe R., and Smillie, Jennifer M. Thu . "QCD and electroweak interference in Higgs production by gauge boson fusion". United States. doi:10.1103/PHYSREVD.75.037301.
@article{osti_21011023,
title = {QCD and electroweak interference in Higgs production by gauge boson fusion},
author = {Andersen, Jeppe R. and Smillie, Jennifer M.},
abstractNote = {We explicitly calculate the contribution to Higgs production at the LHC from the interference between gluon fusion and weak vector boson fusion, and compare it to the pure QCD and pure electroweak result. While the effect is small at tree level, we speculate it will be significantly enhanced by loop effects.},
doi = {10.1103/PHYSREVD.75.037301},
journal = {Physical Review. D, Particles Fields},
number = 3,
volume = 75,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2007},
month = {Thu Feb 01 00:00:00 EST 2007}
}
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  • Based on our recent next-to-next-to-leading order (NNLO) dynamical parton distributions as obtained in the 'fixed flavor number scheme', we generate radiatively parton distributions in the 'variable flavor number scheme' where the heavy-quark flavors (c,b,t) also become massless partons within the nucleon. Only within this latter factorization scheme are NNLO calculations feasible at present, since the required partonic subprocesses are only available in the approximation of massless initial-state partons. The NNLO predictions for gauge boson production are typically larger (by more than 1{sigma}) than the next-to-leading order (NLO) ones, and rates at LHC energies can be predicted with an accuracy ofmore » about 5%, whereas at Tevatron they are more than 2{sigma} above the NLO ones. The NNLO predictions for standard model Higgs-boson production via the dominant gluon fusion process have a total (parton distribution function and scale) uncertainty of about 10% at LHC which almost doubles at the lower Tevatron energies; they are typically about 20% larger than the ones at NLO but the total uncertainty bands overlap.« less