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h --> mutau at Hadron colliders.

T Han1, D Marfatia

  • 1Department of Physics, University of Wisconsin-Madison, 53706, USA.

Physical Review Letters
|April 6, 2001
PubMed
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We investigated Higgs boson decays into muon and tau particles. This unique signature could reveal the Higgs boson at the Tevatron and Large Hadron Collider, surpassing standard model and supersymmetric model expectations.

Area of Science:

  • High Energy Physics
  • Particle Physics
  • Collider Physics

Background:

  • Flavor-changing Higgs boson couplings are predicted in models with multiple Higgs doublets.
  • The muon-tau Higgs boson coupling is motivated by neutrino oscillations.
  • Standard Model Higgs boson searches primarily focus on other decay channels.

Purpose of the Study:

  • To investigate the observability of the lepton flavor-violating Higgs boson decay h -> mu tau at hadron colliders.
  • To assess the potential of this decay channel for Higgs boson discovery at the Tevatron and the Large Hadron Collider (LHC).
  • To compare the sensitivity of this channel with Standard Model (SM) and Minimal Supersymmetric Standard Model (MSSM) expectations.

Main Methods:

  • Simulating Higgs boson production and decay events at hadron colliders.

Related Experiment Videos

  • Analyzing the unique mu tau signature for background suppression.
  • Calculating expected event yields and signal significance.

    • Main Results:

    • The h -> mu tau decay channel offers a unique signature with significant discovery potential at the Tevatron Run II.
    • This channel could surpass expectations for Higgs boson searches in both the SM and large parameter regions of the MSSM.
    • Sensitivity is greatly improved at the LHC, exceeding reach of a muon collider Higgs factory.

    Conclusions:

    • The lepton flavor-violating Higgs decay h -> mu tau is a promising channel for Higgs boson discovery at hadron colliders.
    • The Tevatron and LHC can probe this decay, providing crucial tests of Higgs boson couplings beyond the Standard Model.
    • This search complements other Higgs decay channels and offers unique sensitivity to new physics scenarios.