Neutralino Dark Matter in Mirage Mediation

Abstract

We study the phenomenology of neutralino dark matter (DM) in mirage mediation scenario of supersymmetry breaking which results from the moduli stabilization in some string/brane models. Depending upon the model parameters, especially the anomaly to modulus mediation ratio determined by the moduli stabilization mechanism, the nature of the lightest supersymmetric particle (LSP) changes from Bino-like neutralino to Higgsino-like one via Bino-Higgsino mixing region. For the Bino-like LSP, the standard thermal production mechanism can give a right amount of relic DM density through the stop/stau-neutralino coannihilation or the pseudo-scalar Higgs resonance process. We also examine the prospect of direct and indirect DM detection in various parameter regions of mirage mediation. Neutralino DM in galactic halo might be detected by near future direct detection experiments in the case of Bino-Higgsino mixed LSP. The gamma ray flux from Galactic Center might be detectable also if the DM density profile takes a cuspy shape.

One reference added

References in corpus (4)

• Moduli Decays and Gravitinos
• Gravitinos from Heavy Scalar Decay
• Challenges in Detecting Gamma-Rays From Dark Matter Annihilations in the Galactic Center
• Prospects for Mirage Mediation

Cited by in corpus (22)

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• Varying the Universality of Supersymmetry-Breaking Contributions to MSSM Higgs Boson Masses
• TeV Scale Mirage Mediation and Natural Little SUSY Hierarchy
• More about F-term uplifting
• Mirage in the Sky: Non-thermal Dark Matter, Gravitino Problem, and Cosmic Ray Anomalies
• Collider signals and neutralino dark matter detection in relic-density-consistent models without universality
• Mixed Neutralino Dark Matter in Nonuniversal Gaugino Mass Models
• Axionic Mirage Mediation
• Nonthermal dark matter in mirage mediation
• Mixed Higgsino Dark Matter from a Large SU(2) Gaugino Mass
• Mixed Bino-Wino-Higgsino Dark Matter in Gauge Messenger Models
• Baryon Asymmetry in a Heavy Moduli Scenario
• TeV scale partial mirage unification and neutralino dark matter
• Gamma Ray Burst Neutrinos Probing Quantum Gravity
• Dark Matter Prospects in Deflected Mirage Mediation
• GLAST and Lorentz violation
• Particle Dark Matter Candidates
• Colliders and Cosmology
• Supersymmetry: The Final Countdown
• Relic abundance and detection prospects of neutralino dark matter in mirage mediation