Gluon-induced WW background to Higgs boson searches at the LHC | Zendy

T. Binoth | Zendy; M. Ciccolini | Zendy; N. Kauer | Zendy; Michael Krämer | Zendy

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Gluon-induced WW background to Higgs boson searches at the LHC

Author(s) -

T. Binoth,

M. Ciccolini,

N. Kauer,

Michael Krämer

Publication year - 2005

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2005/03/065

Subject(s) - physics , particle physics , higgs boson , large hadron collider , gluon , lepton , vector boson , boson , nuclear physics , annihilation , standard model (mathematical formulation) , physics beyond the standard model , quark , electron , archaeology , gauge (firearms) , history

Vector-boson pair production is an important background for Higgs boson andnew physics searches at the Large Hadron Collider LHC. We have calculated theloop-induced gluon-fusion process gg -> WW -> leptons, allowing for arbitraryinvariant masses of the intermediate W bosons. This process contributes atO(alpha_s^2) relative to quark-antiquark annihilation, but its importance isenhanced by the large gluon flux at the LHC and by experimental cuts employedin Higgs boson searches. We find that gg -> WW provides only a moderatecorrection (ca. 5%) to the inclusive W-pair production cross section at theLHC. However, after taking into account realistic experimental cuts, thegluon-fusion process becomes significant and increases the theoretical WWbackground estimate for Higgs searches in the pp -> H -> WW -> leptons channelby approximately 30%.Comment: 11 pages, LaTeX, 4 figures, uses JHEP3.cl

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