Freeze-in Production of Sterile Neutrino Dark Matter in U(1)${}_{\mathrm{B}-\mathrm{L}}$ Model

Abstract

With the advent of new and more sensitive direct detection experiments, scope for a thermal WIMP explanation of dark matter (DM) has become extremely constricted. The non-observation of thermal WIMP in these experiments has put a strong upper bound on WIMP-nucleon scattering cross section and within a few years it is likely to touch the neutrino floor. Hence in all probability, DM may have some non-thermal origin. In this work we explore in detail this possibility of a non-thermal sterile neutrino DM within the framework of U(1)${}_{\mathrm{B}-\mathrm{L}}$ model. The U(1)${}_{\mathrm{B}-\mathrm{L}}$ model on the other hand is a well-motivated and minimal way of extending the standard model so that it can explain the neutrino masses via Type-I see-saw mechanism. We have shown, besides explaining the neutrino mass, it can also accommodate a non-thermal sterile neutrino DM with correct relic density. In contrast with the existing literature, we have found that $W^{\pm }$ decay can also be a dominant production mode of the sterile neutrino DM. To obtain the comoving number density of dark matter, we have solved here a coupled set of Boltzmann equations considering all possible decay as well as annihilation production modes of the sterile neutrino dark matter. The framework developed here though has been done for a U(1)${}_{\mathrm{B}-\mathrm{L}}$ model, can be applied quite generally for any models with an extra neutral gauge boson and a fermionic non-thermal dark matter.

44 pages, 9 eps figures, 2 Tables

References in corpus (20)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Dark Matter Results from 225 Live Days of XENON100 Data
• Search for high-mass dilepton resonances in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Dark matter production in the early Universe: beyond the thermal WIMP paradigm
• Can sterile neutrinos be the dark matter?
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• The Minimal Set of Electroweak Precision Parameters
• Realistic sterile neutrino dark matter with keV mass does not contradict cosmological bounds
• keV Sterile Neutrino Dark Matter from Singlet Scalar Decays: Basic Concepts and Subtle Features
• A Dark Matter Progenitor: Light Vector Boson Decay into (Sterile) Neutrinos
• Sterile neutrino dark matter in $B-L$ extension of the standard model and galactic 511 keV line
• MeV sterile neutrinos in low reheating temperature cosmological scenarios
• Nonthermal Two Component Dark Matter Model for Fermi-LAT $\gamma$-ray excess and 3.55 keV X-ray Line
• Class of Higgs-portal Dark Matter models in the light of gamma-ray excess from Galactic center
• Axino Light Dark Matter and Neutrino Masses with R-parity Violation
• 7 keV Scalar Dark Matter and the Anomalous Galactic X-ray Spectrum
• Non-thermal Production of Dark Matter from Late-Decaying Scalar Field at Intermediate Scale
• Sterile Neutrino Dark Matter and Low Scale Leptogenesis from a Charged Scalar
• Sterile neutrino dark matter in warped extra dimensions

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• Naturally Stable Right-Handed Neutrino Dark Matter
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• Dark Matter Relic Abundance and Light Sterile Neutrinos
• Freeze-in Dark Matter via Light Dirac Neutrino Portal
• Long lived inert Higgs in fast expanding universe and its imprint on cosmic microwave background
• Freeze-in Dark Matter from a Minimal B-L Model and Possible Grand Unification
• Freeze-in Dark Matter Through Forbidden Channel in $U(1{)}_{B-L}$
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• Multi-messenger FIMP
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• Freeze-in sterile neutrino dark matter in a feebly gauged $B-L$ model
• A closer look at the seesaw-dark matter correspondence
• Sterile neutrino dark matter from a TeV Scale Seesaw
• Neutrino flavor mixing with approximate $\mu$-$\tau$ symmetry within the low-scale minimal linear seesaw model
• Freeze-In Dark Matter and Leptogenesis: a ${\psi }^{\prime }$SM route
• Sterile neutrino Dark Matter in the minimal Dirac Seesaw