Higgs and Z boson decays into light gluinos

Abstract

We calculate the decay rate of scalar and pseudoscalar Higgs bosons into a pair of gluinos, within the Minimal Supersymmetric Standard Model. In the theoretically and experimentally allowed light gluino window, $\mg \sim $ 3--5 GeV, gluino pairs can completely dominate the decays of the light scalar Higgs boson and play a prominent role in the decay of the pseudoscalar Higgs boson. This would alter the limits obtained from $Z$ decays on the lightest CP--even and CP--odd Higgs bosons, and could jeopardize the search for these Higgs particles at future hadron colliders. In contrast, the branching ratio for the two--body decay of $Z$ bosons into pairs of light gluinos is less than 0.1\%.

arXiv commentLatex file, 16 pages of text. 8 uufiled postscript figures included. Compressed postscript version with figures available by anonymous ftp at ftp://phenom.physics.wisc.edu/pub/preprints/current/madph-94-853.ps.Z

References in corpus (13)

• Testing the Higgs Sector of the Minimal Supersymmetric Standard Model at Large Hadron Colliders
• QCD corrections to Higgs boson self--energies and fermionic decay widths
• Perturbative QCD data are consistent with light gluinos
• Light Gluinos in $Z^0$ Decays?
• Experiments to Find or Exclude a Long-Lived, Light Gluino
• Production and Decay of Scalar Stoponium Bound States
• Higgs particles at future hadron and electron-positron colliders
• Best Fit to the Gluino Mass
• LEP and radiative electroweak breaking close the light gluino window
• Supersymmetric QCD corrections to quark pair production in e+ e- annihilation
• Light Gluinos in Four-Jet Events at LEP
• Light Gluinos at LEP
• Closing the Light Gluino Window in Supersymmetric Grand Unified Models

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• Associated production of Z and neutral Higgs bosons at the CERN Large Hadron Collider
• Light Gluino and the Running of alpha_s
• Gaugino Mass Dependence of Electron and Neutron Electric Dipole Moments
• Gluino Pair Production at Linear e^+e^- Colliders
• New Light Windows for Sparticle Masses and Higgs Decays in the R Parity Violating MSSM
• Constraints on Light Gluinos from Tevatron Dijet Data
• Supersymmetric QCD Corrections to Top Quark Pair Production in Photon-Photon Collision
• Z decays into light gluinos: a calculation based on unitarity