Gravitino Freeze-In

Abstract

We explore an alternative mechanism for the production of gravitino dark matter whereby relic gravitinos originate from the decays of superpartners which are still in thermal equilibrium, i.e. via freeze-in. Contributions to the gravitino abundance from freeze-in can easily dominate over those from thermal scattering over a broad range of parameter space, e.g. when the scalar superpartners are heavy. Because the relic abundance from freeze-in is independent of the reheating temperature after inflation, collider measurements may be used to unambiguously reconstruct the freeze-in origin of gravitinos. In particular, if gravitino freeze-in indeed accounts for the present day dark matter abundance, then the lifetime of the next-to-lightest superpartner is uniquely fixed by the superpartner spectrum.

5 pages, 3 figures

References in corpus (4)

• Big-Bang Nucleosynthesis and Gravitino
• A Non Standard Supersymmetric Spectrum
• Gravitino Dark Matter Scenarios with Massive Metastable Charged Sparticles at the LHC
• Search for Stopped Gluinos in pp collisions at sqrt s = 7 TeV

Cited by in corpus (43)

• The Dawn of FIMP Dark Matter: A Review of Models and Constraints
• Spread Supersymmetry with Wino LSP: Gluino and Dark Matter Signals
• Collider Searches for Long-Lived Particles Beyond the Standard Model
• LHC-friendly minimal freeze-in models
• Freeze-in through portals
• FIMP realization of the scotogenic model
• Lower Mass Bounds on FIMP Dark Matter Produced via Freeze-In
• A Minimal Model of Gravitino Dark Matter
• Warm and cold fermionic dark matter via freeze-in
• "L=R" - $U(1{)}_R$ as the Origin of Leptonic 'RPV'
• Sterile neutrino Dark Matter production from scalar decay in a thermal bath
• Gravitino or Axino Dark Matter with Reheat Temperature as high as $10^{16}$ GeV
• SUSY dark matter(s)
• Constraining FIMP from the structure formation of the Universe: analytic mapping from $m_{\mathrm{WDM}}$
• Dark matter of any spin -- an effective field theory and applications
• A Two-Component Dark Matter Model and its Associated Gravitational Waves
• Probing Dark Matter freeze-in with long-lived particle signatures: MATHUSLA, HL-LHC and FCC-hh
• Simplified Models for Displaced Dark Matter Signatures
• Thermal Goldstino Production with Low Reheating Temperatures
• Finding eV-scale Light Relics with Cosmological Observables
• Gravitino Dark Matter and low-scale Baryogenesis
• A two-component vector WIMP -- fermion FIMP dark matter model with an extended seesaw mechanism
• Baryogenesis with Higher Dimension Operators
• Ripples in Spacetime from Broken Supersymmetry
• Unstable Gravitino Dark Matter - Prospects for Indirect and Direct Detection
• Sgoldstino-less inflation and low energy SUSY breaking
• LHC constraints on Gravitino Dark Matter
• Long-Lived stop at the LHC with or without R-parity
• Out-of-equilibrium Baryogenesis and SuperWIMP Dark Matter
• SUSY's Ladder: Reframing Sequestering at Large Volume
• FIMP Dark Matter Freeze-in Gauge Mediation and Hidden Sector
• Probing the Electroweakino Sector of General Gauge Mediation at the LHC
• Mass-varying Dark Matter from a Phase Transition
• Gravitino Thermal Production, Dark Matter, and Reheating of the Universe
• A Solution to the mu/Bmu Problem in Gauge Mediation with Hidden Gauge Symmetry
• Seminatural Gauge Mediation from Product Group Unification
• Leptogenesis after superconformal subcritical hybrid inflation
• Heavy Gravitino and Split SUSY in the Light of BICEP2
• Dark matter production accompanied by gravitational wave signals during cosmological phase transitions
• Perturbative Resonance during Dark Matter Production and Its Cosmological Implications
• Parametric Coincidence in the Baryon to Dark Matter Ratio from Affleck-Dine Baryogenesis and UV Freeze-in Dark Matter
• Sterile neutrino dark matter from a TeV Scale Seesaw
• Oscillation Baryogenesis via Ultraviolet Dark Matter Freeze-In