Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-07-20
Phys.Rev.Lett.105:241801,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 2 figures
Scientific paper
10.1103/PhysRevLett.105.241801
The Higgs boson may decay predominantly into a hidden sector, producing lepton jets instead of the standard Higgs signatures. We propose a search strategy for such a signal at hadron colliders. A promising channel is the associated production of the Higgs with a Z or W, where the dominant background is Z or W plus QCD jets. The lepton jets can be discriminated from QCD jets by cutting on the electromagnetic fraction and charge ratio. The former is the fraction of jet energy deposited in the electromagnetic calorimeter and the latter is the ratio of energy carried by charged particles to the electromagnetic energy. We use a Monte Carlo description of detector response to estimate QCD rejection efficiencies of order 10^-3 per jet. The expected Higgs mass reach is about 155 GeV at the Tevatron with 10 fb^-1 of data and about 135 GeV at the 7 TeV LHC with 1 fb^-1.
Falkowski Adam
Ruderman Joshua T.
Volansky Tomer
Zupan Jure
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