Composite Higgs search at the LHC

J. R. Espinosa, C. Grojean, M. Muhlleitner

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46 Citations (Scopus)

Abstract

The Higgs boson production cross-sections and decay rates depend, within the Standard Model (SM), on a single unknown parameter, the Higgs mass. In composite Higgs models where the Higgs boson emerges as a pseudo-Goldstone boson from a stronglyinteracting sector, additional parameters control the Higgs properties which then deviate from the SM ones. These deviations modify the LEP and Tevatron exclusion bounds and significantly affect the searches for the Higgs boson at the LHC. In some cases, all the Higgs couplings are reduced, which results in deterioration of the Higgs searches but the deviations of the Higgs couplings can also allow for an enhancement of the gluon-fusion production channel, leading to higher statistical significances. The search in the H → γγ channel can also be substantially improved due to an enhancement of the branching fraction for the decay of the Higgs boson into a pair of photons.
Original languageEnglish
Article number065
JournalJournal of High Energy Physics
Volume2010
Issue number5
DOIs
Publication statusPublished - 2 Aug 2010

Keywords

  • Beyond standard model
  • Hadronic colliders
  • Higgs physics

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