MeV sterile neutrinos in low reheating temperature cosmological scenarios

Abstract

It is commonly assumed that the cosmological and astrophysical bounds on the mixings of sterile with active neutrinos are much more stringent than those obtained from laboratory measurements. We point out that in scenarios with a very low reheating temperature T_RH << 100 MeV at the end of (the last episode of) inflation or entropy creation, the abundance of sterile neutrinos becomes largely suppressed with respect to that obtained within the standard framework. Thus, in this case cosmological bounds become much less stringent than usually assumed, allowing sterile neutrinos to be ``visible'' in future experiments. Here, we concentrate on massive (mostly sterile) neutrinos heavier than 1 MeV.

arXiv comment14 pp, 7 figs

References in corpus (44)

• The Cosmic Microwave Background Spectrum from the Full COBE/FIRAS Data Set
• Sterile Neutrinos as Dark Matter
• The $\nu$MSM, Dark Matter and Baryon Asymmetry of the Universe
• The $\nu$MSM, Dark Matter and Neutrino Masses
• EGRET Observations of the Extragalactic Gamma Ray Emission
• Largest temperature of the radiation era and its cosmological implications
• Scalar Dark Matter candidates
• Wino Cold Dark Matter from Anomaly-Mediated SUSY Breaking
• MeV-scale Reheating Temperature and Thermalization of Neutrino Background
• Neutrinos in cosmology
• Sterile Neutrino Hot, Warm, and Cold Dark Matter
• What is the lowest possible reheating temperature?
• Thermal Inflation and the Moduli Problem
• Massive sterile neutrinos as warm Dark Matter
• Cosmological Constraints on Late-time Entropy Production
• A new determination of the extragalactic diffuse gamma-ray background from EGRET data
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• Propagation of Ultra High Energy Protons over Cosmological Distances and Implications for Topological Defect Models
• The oscillation effects on thermalization of the neutrinos in the universe with low reheating temperature
• Low reheating temperature and the visible sterile neutrino
• Heavy sterile neutrinos: Bounds from big-bang nucleosynthesis and SN 1987A
• The effect of a late decaying scalar on the neutralino relic density
• Non-thermal dark matter via Affleck-Dine baryogenesis and its detection possibility
• Fermion Masses and Mixing in Extended Technicolor Models
• Neutrino Masses in Theories with Dynamical Electroweak Symmetry Breaking
• Are small neutrino masses unveiling the missing mass problem of the Universe?
• Do We Need Stars to Reionize the Universe at High Redshifts? Early Reionization by Decaying Heavy Sterile Neutrinos
• Dynamical Symmetry Breaking of Extended Gauge Symmetries
• Bounds on heavy sterile neutrinos revisited
• Neutrino Phenomenology of Very Low-Energy Seesaws
• Limits on the Mixing of Tau Neutrino to Heavy Neutrinos
• Relic neutrino asymmetry evolution from first principles
• Cosmological and astrophysical bounds on a heavy sterile neutrino and the KARMEN anomaly
• Testing MeV dark matter with neutrino detectors
• Flavor-Changing Processes in Extended Technicolor
• Sterile neutrinos in tau lepton decays
• CRPropa: A Numerical Tool for the Propagation of UHE Cosmic Rays, Gamma-rays and Neutrinos
• Standard Model Neutrinos as Warm Dark Matter
• Sterile neutrino production in models with low reheating temperatures
• The KARMEN Time Anomaly: Search for a Neutral Particle of Mass 33.9 MeV in Pion Decay
• Neutralino Dark Matter from MSSM Flat Directions in light of WMAP Result
• MeV Right-handed Neutrinos and Dark Matter
• Stabilizing dilaton and baryogenesis
• Cosmology of "Visible" Sterile Neutrinos

Cited by in corpus (55)

• The Search for Heavy Majorana Neutrinos
• A White Paper on keV Sterile Neutrino Dark Matter
• Sterile neutrinos: the dark side of the light fermions
• Bounds on very low reheating scenarios after Planck
• Neutrinos at IceCube from Heavy Decaying Dark Matter
• Primordial Black Holes from Inflaton Fragmentation into Oscillons
• Dark Matter from Split Seesaw
• Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• Sterile neutrinos in leptonic and semileptonic decays
• Indirect searches for sterile neutrinos at a high-luminosity Z-factory
• Experimental bounds on sterile neutrino mixing angles
• Tree-level lepton universality violation in the presence of sterile neutrinos: impact for $R_K$ and $R_{\pi }$
• Sterile Neutrinos in Light of Recent Cosmological and Oscillation Data: a Multi-Flavor Scheme Approach
• The Irreducible Axion Background
• Right-handed neutrino dark matter under the B-L gauge interaction
• 7 keV sterile neutrino dark matter from split flavor mechanism
• Light new physics in XENON1T
• Freeze-in Production of Sterile Neutrino Dark Matter in U(1)${}_{\mathrm{B}-\mathrm{L}}$ Model
• Improved Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• Impact of sterile neutrinos on nuclear-assisted cLFV processes
• Effect of steriles states on lepton magnetic moments and neutrinoless double beta decay
• A loophole to the universal photon spectrum in electromagnetic cascades: application to the "cosmological lithium problem"
• New limits on heavy sterile neutrino mixing in ${}^8\mathrm{B}$-decay obtained with the Borexino detector
• Inert-Sterile Neutrino: Cold or Warm Dark Matter Candidate
• Asymmetric dark matter annihilation as a test of non-standard cosmologies
• Cosmological Dependence of Non-resonantly Produced Sterile Neutrinos
• Matter Effects in Active-Sterile Solar Neutrino Oscillations
• Comprehensive constraints on heavy sterile neutrinos from core-collapse supernovae
• Beta and Neutrinoless Double Beta Decays with KeV Sterile Fermions
• Number-Theory Dark Matter
• Light Dark Matter from Entropy Dilution
• 511 keV line constraints on feebly interacting particles from supernovae
• 7 keV Sterile neutrino dark matter in $U(1{)}_R-$ lepton number model
• Heavy neutral leptons and high-intensity observables
• MeV-scale reheating temperature and cosmological production of light sterile neutrinos
• Two sides of the same coin: sterile neutrinos and dark radiation. Status and perspectives
• Relaxion Dark Matter
• Cosmological Dependence of Resonantly Produced Sterile Neutrinos
• Effects of kination and scalar-tensor cosmologies on sterile neutrinos
• Production of heavy sterile neutrinos from vector boson decay at electroweak temperatures
• Assessing the role of nuclear effects in the interpretation of the MiniBooNE low-energy anomaly
• Thermal axions with multi-eV masses are possible in low-reheating scenarios
• Breaking Be: a sterile neutrino solution to the cosmological lithium problem
• Current constraints on cosmological scenarios with very low reheating temperatures
• Fermion Mass Hierarchy and Double Seesaw Mechanism in a 3-3-1 Model with an Axion
• Direct comparison of sterile neutrino constraints from cosmological data, ${\nu }_e$ disappearance data and ${\nu }_{\mu }\to {\nu }_e$ appearance data in a $3+1$ model
• Longevity Problem of Sterile Neutrino Dark Matter
• Non-thermal Hot Dark Matter from Inflaton/Moduli Decay: The Momentum Distribution and Relaxing the Cosmological Mass Bound
• Non-thermal neutrino-like hot dark matter in light of the $S_8$ tension
• Fireball baryogenesis from early structure formation due to Yukawa forces
• Experimental signatures of non-standard pre-BBN cosmologies
• keV Sterile Neutrino Dark Matter and Low Scale Leptogenesis
• Results from PAMELA, ATIC and FERMI : Pulsars or Dark Matter ?
• No Hiding in the Dark: Cosmological Bounds on Heavy Neutral Leptons with Dark Decay Channels
• Note on Thermalization of Non-resonantly Produced Sterile Neutrinos