Thermal keV dark matter in a gauged B-L model with cosmic inflation

Abstract

We investigate the possibility of keV scale thermal dark matter (DM) in a gauged $B-L$ extension of the standard model with three right-handed neutrinos (RHN) and one vector like fermion in the context of cosmic inflation. The complex singlet scalar field responsible for the spontaneous breaking of $B-L$ gauge symmetry is non-minimally coupled to gravity and serves the role of inflaton. The keV scale vector like fermion DM gives rise to the possibility of warm dark matter, but it gets overproduced thermally. The subsequent entropy dilution due to one of the RHN decay can bring the thermal abundance of DM within the observed limit. The dynamics of both the DM and the diluter are regulated by the $B-L$ model parameters which are also restricted by the requirement of successful inflationary dynamics.We constrain the model parameter space from the requirement of producing sufficient entropy dilution to obtain correct DM relic, inflationary observables along with other phenomenological constraints. Interestingly, we obtain unique predictions for the order of lightest active neutrino mass ($m_{{\nu }_l}\lesssim 10^{-14}$ eV) as function of $B-L$ gauge coupling for keV scale DM. The proposed framework also explains the origin of observed baryon asymmetry from the decay of other two heavier RHN by overcoming the entropy dilution effect.

arXiv comment17 pages, 10 captioned figures, matches version accepted for publication in Phys. Rev. D

References in corpus (54)

• Particle Dark Matter: Evidence, Candidates and Constraints
• Supersymmetric Dark Matter
• The Standard Model Higgs boson as the inflaton
• Dark Matter Search Results from a One Tonne$\times$Year Exposure of XENON1T
• Results from a search for dark matter in the complete LUX exposure
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• Dark Matter Candidates from Particle Physics and Methods of Detection
• Oscillating neutrinos and mu --> e, gamma
• BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
• A lower bound on the right-handed neutrino mass from leptogenesis
• Resonant Leptogenesis
• Detection of An Unidentified Emission Line in the Stacked X-ray spectrum of Galaxy Clusters
• An unidentified line in X-ray spectra of the Andromeda galaxy and Perseus galaxy cluster
• Neutrinoless Double-Beta Decay: Status and Prospects
• Z-prime Gauge Bosons at the Tevatron
• Dark Matter Search Results from the PandaX-4T Commissioning Run
• An improved upper limit on the neutrino mass from a direct kinematic method by KATRIN
• Lyman-alpha constraints on warm and on warm-plus-cold dark matter models
• A White Paper on keV Sterile Neutrino Dark Matter
• Search for high-mass dilepton resonances using 139 fb${}^{-1}$ of $pp$ collision data collected at $\sqrt{s}=$13 TeV with the ATLAS detector
• Can sterile neutrinos be the dark matter?
• Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
• Discovering the Higgs Through Highly-Displaced Vertices
• Review of LHC Dark Matter Searches
• A lower bound on the mass of Dark Matter particles
• The Minimal Set of Electroweak Precision Parameters
• Neutrino Phenomenology -- the case of two right handed neutrinos
• keV sterile neutrino dark matter in gauge extensions of the standard model
• Dynamics of Perturbations in Double Field Theory & Non-Relativistic String Theory
• Search for a Higgs boson in the mass range from 145 to 1000 GeV decaying to a pair of W or Z bosons
• Conformal Transformations with Multiple Scalar Fields
• Warm Dark Matter in Low Scale Left-Right Theory
• Neutrino decoupling beyond the Standard Model: CMB constraints on the Dark Matter mass with a fast and precise $N_{\mathrm{eff}}$ evaluation
• Higgs Inflation and Naturalness
• Delta r and the W-boson mass in the Singlet Extension of the Standard Model
• New Production Mechanism for keV Sterile Neutrino Dark Matter by Decays of Frozen-In Scalars
• Search for high-mass resonances in dilepton final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Novel constraints on the particle nature of dark matter from stellar streams
• Some aspects of the cosmological conformal equivalence between ``Jordan Frame'' and ``Einstein Frame''
• Tensor to Scalar Ratio in Non-Minimal ${\varphi }^4$ Inflation
• Constraints on the properties of warm dark matter using the satellite galaxies of the Milky Way
• Constraining sterile neutrino dark matter by phase-space density observations
• The ZZ' kinetic mixing in the light of the recent direct and indirect dark matter searches
• Resonant Leptogenesis in the Minimal B-L Extended Standard Model at TeV
• Reconstructing Non-standard Cosmologies with Dark Matter
• Non-Minimal B-L Inflation with Observable Gravity Waves
• Sterile Neutrino Dark Matter in Left-Right Theories
• The Pursuit of Dark Matter at Colliders - An Overview
• Unitarity limits on thermal dark matter in (non-)standard cosmologies
• Cosmic Inflation in Minimal $U(1{)}_{B-L}$ Model: Implications for (Non) Thermal Dark Matter and Leptogenesis
• Minimal Flavor Violation in the Minimal U(1)_{B-L} Model and Resonant Leptogenesis
• keV Neutrino Dark Matter in a Fast Expanding Universe
• Early Matter Domination from Long-Lived Particles in the Visible Sector
• A model for mixed warm and hot right-handed neutrino dark matter

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