Discovering higgs boson decays to lepton jets at hadron colliders

Adam Falkowski; Joshua T. Ruderman; Tomer Volansky; Jure Zupan

doi:10.1103/PhysRevLett.105.241801

Discovering higgs boson decays to lepton jets at hadron colliders

Adam Falkowski, Joshua T. Ruderman, Tomer Volansky, Jure Zupan

Research output: Contribution to journal › Article › peer-review

Abstract

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 boson with a Z or W. 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 O(10⊃-3) per jet. The expected 5σ (3σ) discovery reach in Higgs boson mass is ∼115GeV (150 GeV) at the Tevatron with 10fb⊃-1 of data and ∼110GeV (130 GeV) at the 7 TeV LHC with 1fb⊃-1.

Original language	English (US)
Article number	241801
Journal	Physical Review Letters
Volume	105
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.105.241801
State	Published - Dec 9 2010

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.105.241801

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abstract = "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 boson with a Z or W. 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 O(10⊃-3) per jet. The expected 5σ (3σ) discovery reach in Higgs boson mass is ∼115GeV (150 GeV) at the Tevatron with 10fb⊃-1 of data and ∼110GeV (130 GeV) at the 7 TeV LHC with 1fb⊃-1.",

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AB - 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 boson with a Z or W. 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 O(10⊃-3) per jet. The expected 5σ (3σ) discovery reach in Higgs boson mass is ∼115GeV (150 GeV) at the Tevatron with 10fb⊃-1 of data and ∼110GeV (130 GeV) at the 7 TeV LHC with 1fb⊃-1.

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Discovering higgs boson decays to lepton jets at hadron colliders

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