Confronting the Moduli-Induced LSP Problem

Abstract

Moduli fields with Planck-suppressed couplings to light species are common in string compactifications. Decays of these moduli can reheat the universe at a late time and produce dark matter non-thermally. For generic moduli fields motivated by string theory with masses similar to that of the gravitino and TeV-scale superpartners in the minimal supersymmetric Standard Model (MSSM), the non-thermal production of the lightest superpartner (LSP) tends to create an unacceptably large relic density or too strong of an indirect detection signal. We call this the moduli-induced LSP problem of the MSSM. In this paper we investigate extensions of the MSSM containing new LSP candidates that can alleviate this tension. We examine the viability of this scenario in models with light Abelian and non-Abelian hidden sectors, and symmetric or asymmetric dark matter. In these extensions it is possible, though somewhat challenging, to avoid a moduli-induced LSP problem. In all but the asymmetric scenario, the LSP can account for only a small fraction of the observed dark matter density.

References added

References in corpus (35)

• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• New Fixed-Target Experiments to Search for Dark Gauge Forces
• Asymmetric Dark Matter
• Constraints on Dark Matter from Colliders
• Search for a dark photon in e+e- collisions at BABAR
• The Well-Tempered Neutralino
• CMB Constraints on WIMP Annihilation: Energy Absorption During the Recombination Epoch
• The Tevatron at the Frontier of Dark Matter Direct Detection
• Big Bang Nucleosynthesis Constraints on Hadronically and Electromagnetically Decaying Relic Neutral Particles
• The WIMPless Miracle: Dark Matter Particles without Weak-scale Masses or Weak Interactions
• Dark Matter and Dark Radiation
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• Probing a Secluded U(1) at B-factories
• Hylogenesis: A Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter
• Moduli-Induced Gravitino Problem
• Non-thermal Dark Matter and the Moduli Problem in String Frameworks
• Moduli Decays and Gravitinos
• A robust upper limit on N_eff from BBN, circa 2011
• Updated CMB constraints on Dark Matter annihilation cross-sections
• Simply Unnatural Supersymmetry
• A Natural Supersymmetric Model with MeV Dark Matter
• O'KKLT
• Gravitinos from Heavy Scalar Decay
• INTEGRAL SPI All-Sky View in Soft Gamma Rays: Study of Point Source and Galactic Diffuse Emissions
• Non-thermal Histories and Implications for Structure Formation
• Conformal Sequestering Simplified
• Cladogenesis: Baryon-Dark Matter Coincidence from Branchings in Moduli Decay
• Sequestering in String Theory
• Compactified String Theories -- Generic Predictions for Particle Physics
• WIMPless Dark Matter from Non-Abelian Hidden Sectors with Anomaly-Mediated Supersymmetry Breaking
• Annihilating Asymmetric Dark Matter
• Moduli Stabilization and Supersymmetry Breaking in Deflected Mirage Mediation
• Neutralino and gravitino dark matter with low reheating temperature
• Dark Matter Antibaryons from a Supersymmetric Hidden Sector
• Supersymmetric Partially Interacting Dark Matter

Cited by in corpus (1)

• Coupling Unification and Dark Matter in a Standard Model Extension with Adjoint Majorana Fermions