A solution to the mu problem in the presence of a heavy gluino LSP

Abstract

In this paper we present a solution to the $\mu$ problem in an SO(10) supersymmetric grand unified model with gauge mediated and D-term supersymmetry breaking. A Peccei-Quinn symmetry is broken at the messenger scale $M\sim 10^{12}$ GeV and enables the generation of the $\mu$ term. The boundary conditions defined at $M$ lead to a phenomenologically acceptable version of the minimal supersymmetric standard model with novel particle phenomenology. Either the gluino or the gravitino is the lightest supersymmetric particle (LSP). If the gravitino is the LSP, then the gluino is the next-to-LSP (NLSP) with a lifetime on the order of one month or longer. In either case this heavy gluino, with mass in the range 25 - 35 GeV, can be treated as a stable particle with respect to experiments at high energy accelerators. Given the extensive phenomenological constraints we show that the model can only survive in a narrow region of parameter space resulting in a light neutral Higgs with mass $\sim 86-91$ GeV and $\tan \beta \sim 9-14$. In addition the lightest stop and neutralino have mass $\sim 100-122$ GeV and $\sim 50-72$ GeV, respectively. Thus the model will soon be tested. Finally, the invisible axion resulting from PQ symmetry breaking is a cold dark matter candidate.

30 pages, 9 figures

References in corpus (4)

• Fine-Tuning Constraints on Supergravity Models
• Solving the Gravitino Problem by Axino
• An analysis of a Heavy Gluino LSP at CDF : The Heavy Gluino Window
• Probing the Desert with Ultra--Energetic Neutrinos from the Sun and the Earth

Cited by in corpus (12)

• Stable Massive Particles at Colliders
• SO(10) grand unification in five dimensions: Proton decay and the mu problem
• Yukawa Deflected Gauge Mediation
• Where the Sidewalk Ends: Jets and Missing Energy Search Strategies for the 7 TeV LHC
• Gluino Annihilations and Neutralino Dark Matter
• Viable models with non-universal gaugino mediated supersymmetry breaking
• Compressed SUSY at 14 TeV LHC
• Lessons for SUSY from the LHC after the first run
• Stable Colored Particles R-SUSY Relics or Not?
• Natural h -> 4g in Supersymmetric Models and R-Hadrons at the LHC
• Predictions of the sign of μfrom supersymmetry breaking models
• Higgsstrahlung from R-hadrons