Dark Matter from Late Invisible Decays to/of Gravitinos

Abstract

In this work, we sift a simple supersymmetric framework of late invisible decays to/of the gravitino. We investigate two cases where the gravitino is the lightest supersymmetric particle or the next-to-lightest supersymmetric particle. The next-to-lightest supersymmetric particle decays into two dark matter candidates and has a long lifetime due to gravitationally suppressed interactions. However, because of the absence of any hadronic or electromagnetic products, it satisfies the tight bounds set by big bang nucleosynthesis and cosmic microwaved background. One or both of the dark matter candidates produced in invisible decays can contribute to the amount of dark radiation and suppress perturbations at scales that are being probed by the galaxy power spectrum and the Lyman-alpha forest data. We show that these constraints are satisfied in large regions of the parameter space and, as a result, the late invisible decays to/of the gravitino can be responsible for the entire dark matter relic abundance.

9 pages, 6 figures. Submitted to PRD

References in corpus (15)

• Reheating in Inflationary Cosmology: Theory and Applications
• Nonperturbative Dynamics Of Reheating After Inflation: A Review
• Big-Bang Nucleosynthesis and Gravitino
• Dark matter production in the early Universe: beyond the thermal WIMP paradigm
• First dark matter search results from a 4-kg CF${}_3$I bubble chamber operated in a deep underground site
• Neutrinos help reconcile Planck measurements with both Early and Local Universe
• Dark Matter Halos with Cores from Hierarchical Structure Formation
• Cladogenesis: Baryon-Dark Matter Coincidence from Branchings in Moduli Decay
• Mirage in the Sky: Non-thermal Dark Matter, Gravitino Problem, and Cosmic Ray Anomalies
• Cosmological constraints on neutrinos after BICEP2
• Unified TeV Scale Picture of Baryogenesis and Dark Matter
• Coupled Boltzmann computation of mixed axion neutralino dark matter in the SUSY DFSZ axion model
• Cosmological Constraints on Neutrino Injection
• keV Photon Emission from Light Nonthermal Dark Matter
• A Rich Tapestry: Supersymmetric Axions, Dark Radiation, and Inflationary Reheating

Cited by in corpus (9)

• Linear cosmological constraints on 2-body decaying dark matter scenarios and the $S_8$ tension
• Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data
• The H0 trouble: Confronting Non-thermal Dark Matter and Phantom Cosmology with the CMB, BAO, and Type Ia Supernovae data
• Muon g-2 in GMSB with Adjoint Messengers
• Updated Big Bang Nucleosynthesis Bounds on Long-lived Particles from Dark Sectors
• Semianalytic model for decaying dark matter halos
• Muon Magnetic Moment and Lepton Flavor Violation in the Economical 3-3-1 Model
• The Hubble Tension: Relativistic Dark Matter Production from Long-lived Particles
• Constraining decaying dark matter with BOSS data and the effective field theory of large-scale structures