Right-Handed Sneutrino as Cold Dark Matter of the Universe

Abstract

We consider the minimal supersymmetric standard model (MSSM) extended by introducing three right-handed (s)neutrinos to account for neutrino masses in the oscillation experiments. Assuming that the neutrino masses are purely Dirac-type, the lightest right-handed sneutrino ${\tilde{\nu }}_R$ can be the lightest superparticle (LSP), which is a good candidate of cold dark matter (CDM) of the universe. We study the possibility of realizing ${\tilde{\nu }}_R$-CDM, paying a special attention to the production of ${\tilde{\nu }}_R$ via decay of the next-to-lightest superparticle (NLSP) after its freeze-out time. It is shown that the late decay of the MSSM-LSP (the LSP among superparticles in the MSSM) can produce a sufficient amount of ${\tilde{\nu }}_R$ to explain the observed dark-matter density, and that the ${\tilde{\nu }}_R$-CDM scenario can be realized in a wide range of parameter space. We also consider the constraint on the decay of MSSM-LSP from the big-bang nucleosynthesis (BBN); we found that the case with stau being the MSSM-LSP is severely constrained.

13 pages, 15 figures, revtex4

References in corpus (2)

• Right-handed Sneutrinos as Nonthermal Dark Matter
• Limit on the Neutrino Mass from the WMAP Three Year Data

Cited by in corpus (37)

• Making dark matter out of light: freeze-in from plasma effects
• Right-handed sneutrino as thermal dark matter
• Cosmic rays from Leptonic Dark Matter
• Constraints on decaying dark matter from the extragalactic gamma-ray background
• Unifying inflation and dark matter with neutrino masses
• FIMP realization of the scotogenic model
• Revival of the Thermal Sneutrino Dark Matter
• Right-handed sneutrino dark matter in the NMSSM
• The cosmology of sub-MeV dark matter freeze-in
• Light mixed sneutrinos as thermal dark matter
• Mixed sneutrino dark matter in light of the 2011 XENON and LHC results
• A Unified Theory of Matter Genesis: Asymmetric Freeze-In
• Discriminating dark matter candidates using direct detection
• R-parity preserving super-WIMP decays
• Right-chiral sneutrinos and long-lived staus: event characteristics at the Large Hadron Collider
• Relic abundance of dark matter in universal extra dimension models with right-handed neutrinos
• Revisiting the Fermionic Dark Matter Absorption on Electron Target
• Non-thermal Production of PNGB Dark Matter and Inflation
• Right sneutrinos and the signals of a stable stop at the Large Hadron Collider
• Comparison of neutralino and sneutrino dark matter in a model with spontaneous CP violation
• Exploiting flux ratio anomalies to probe warm dark matter in future large scale surveys
• Gravitino Dark Matter with Weak-Scale Right-Handed Sneutrino
• Impact of first-order phase transitions on dark matter production in the scotogenic model
• Dark matter candidates in the NMSSM with RH neutrino superfields
• Mass-varying Dark Matter from a Phase Transition
• Probing displaced (dark)photons from low reheating freeze-in at the LHC
• Reconstruction of the left-chiral tau-sneutrino in supersymmetry with a right-sneutrino as the lightest supersymmetric particle
• Constraints from Color and/or Charge Breaking Minima in the $\nu$SSM
• MeV Dark Matter with MeV Dark Photons in Abelian Kinetic Mixing Theories
• Type III Neutrino Seesaw, Freeze-In Long-Lived Dark Matter, and the $W$ Mass Shift
• The Hierarchy Problem: From the Fundamentals to the Frontiers
• Restudy on Dark Matter Time-Evolution in the Littlest Higgs model with T-parity
• Multi-Component Dark Matter from Minimal Flavor Violation
• Right-handed sneutrino and gravitino multicomponent dark matter in light of neutrino detectors
• Freeze-in and Freeze-out in a Right-Handed Neutrino Extended MSSM with a Seesaw Mechanism
• Sterile neutrino dark matter from a TeV Scale Seesaw
• Parallel Seesaw Mechanisms for Neutrinos and Freeze-In Long-Lived Dark Matter