Open AccessHiggs plus two jet production via gluon fusion as a signal at the CERN LHC
Author(s) -
Gunnar Klämke,
Dieter Zeppenfeld
Publication year - 2007
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 - 10.1088/1126-6708/2007/04/052
Subject(s) - physics , particle physics , gluon , large hadron collider , vector boson , higgs boson , fusion , electroweak interaction , jet (fluid) , yukawa potential , nuclear physics , boson , production (economics) , fusion mechanism , pair production , gauge boson , elementary particle , scalar boson , signal (programming language) , standard model (mathematical formulation) , coupling (piping) , physics beyond the standard model
Higgs boson production in association with two tagging jets will be mediatedby electroweak vector boson fusion and by gluon fusion processes at the CERNLHC. The characteristic distributions for the gluon fusion process are analyzedfor the $H\to W^+W^-$ signal at $m_H=160$ GeV, with subsequent leptonic decayof the $W$-pair. The dominant backgrounds from top-quark pair production,$WWjj$ production and vector boson fusion processes can be suppressed to alevel of $S/B\approx 1/4$, yielding a highly significant gluon fusion signalwith 30 fb$^{-1}$. Analysis of the azimuthal angle correlations of the two jetsprovides for a direct measurement of the CP-nature of the $Htt$ Yukawa couplingwhich is responsible for the effective $Hgg$ vertex.Comment: 19 pages, 21 figure
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