Scrutinizing Fermionic Dark Matter in Scotogenic Model with Low Reheating Temperature

Abstract

The scotogenic model provides a minimal and elegant framework that simultaneously explains neutrino masses and accommodates a viable dark matter (DM) candidate. In this work, we investigate the phenomenology of fermionic DM in the scotogenic model, with a particular emphasis on the effects of a non-standard cosmological history characterized by a low reheating temperature. We demonstrate that entropy injection from inflaton decay can significantly dilute the DM abundance, thereby relaxing the annihilation cross section required to reproduce the observed relic density and opening new regions of viable parameter space. We further analyze the complementarity between current and future direct detection experiments and charged lepton flavour violation (cLFV) searches in probing this scenario. Our results show that next-generation direct detection experiments such as DARWIN and XLZD, together with upcoming cLFV searches (in particular the future sensitivity of $\mu \to 3e$ and $\mu \to e$ conversion experiments), will be capable of testing substantial regions of the parameter space, including those associated with low reheating temperatures.

23 pages, 6 figures, 3 tables, Published as JCAP03(2026)014

References in corpus (75)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Dark Matter Search Results from a One Tonne$\times$Year Exposure of XENON1T
• Verifiable Radiative Seesaw Mechanism of Neutrino Mass and Dark Matter
• Oscillating neutrinos and mu --> e, gamma
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters
• BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• Indications of Neutrino Oscillation in a 250 km Long-baseline Experiment
• The $\nu$MSM, Dark Matter and Neutrino Masses
• 2020 Global reassessment of the neutrino oscillation picture
• Weak lensing mass reconstruction of the interacting cluster 1E0657-558: Direct evidence for the existence of dark matter
• MeV-scale Reheating Temperature and Thermalization of Neutrino Background
• What is the lowest possible reheating temperature?
• Dark Matter Search Results from the PandaX-4T Commissioning Run
• DARWIN: towards the ultimate dark matter detector
• From the trees to the forest: a review of radiative neutrino mass models
• A Model for Neutrino Masses and Dark Matter
• Bounds on very low reheating scenarios after Planck
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• The design of the MEG II experiment
• Neutrino mass, Dark Matter and Baryon Asymmetry via TeV-Scale Physics without Fine-Tuning
• The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe
• Lepton Flavor Violation in the Scotogenic Model
• Cold Dark Matter, Radiative Neutrino Mass, mu to e gamma, and Neutrinoless Double Beta Decay
• Anatomy of the Inert Two Higgs Doublet Model in the light of the LHC and non-LHC Dark Matter Searches
• An Updated Analysis of Inert Higgs Doublet Model in light of the Recent Results from LUX, PLANCK, AMS-02 and LHC
• The Inert Dark Matter
• Search for electroweak production of supersymmetric particles in final states with two or three leptons at $\sqrt{s}=13$ TeV with the ATLAS detector
• h\to γγIn Inert Higgs Doublet Model
• Three flavor neutrino oscillation analysis of atmospheric neutrinos in Super-Kamiokande
• Dark Matter Search Results from 4.2 Tonne-Years of Exposure of the LUX-ZEPLIN (LZ) Experiment
• Evolution of Universe to the present inert phase
• Probing the scotogenic model with lepton flavor violating processes
• Diphoton rate in the Inert Doublet Model with a 125 GeV Higgs boson
• Dilepton Signals in the Inert Doublet Model
• Direct Detection of Leptophilic Dark Matter in a Model with Radiative Neutrino Masses
• micrOMEGAs 6.0: N-component dark matter
• Technical design of the phase I Mu3e experiment
• Models with radiative neutrino masses and viable dark matter candidates
• Constraining Inert Dark Matter by R_{γγ} and WMAP data
• Electroweak Precision Fit and New Physics in light of $W$ Boson Mass
• Measurements of Higgs boson production cross sections and couplings in the diphoton decay channel at $\sqrt{s}=$ 13 TeV
• Trilepton Signals in the Inert Doublet Model
• Constraining new physics from Higgs measurements with Lilith: update to LHC Run 2 results
• FIMP realization of the scotogenic model
• Sterile Neutrino portal to Dark Matter II: Exact Dark symmetry
• Direct detection of fermion dark matter in the radiative seesaw model
• Inert Higgs Dark Matter for CDF-II W-boson Mass and Detection Prospects
• The inert doublet model in the light of Fermi-LAT gamma-ray data: a global fit analysis
• Search for the direct production of charginos and neutralinos in $\sqrt{s}$ = 13 TeV $pp$ collisions with the ATLAS detector
• Probing the Inert Doublet Dark Matter Model with Cherenkov Telescopes
• WIMPs, FIMPs, and Inflaton phenomenology via reheating, CMB and $\Delta N_{eff}$
• Enhancement of h --> gamma gamma in the Two Higgs Doublet Model Type I
• The CTA aims at the Inert Doublet Model
• Freezing-in hadrophilic dark matter at low reheating temperatures
• Measurement of the properties of Higgs boson production at $\sqrt{s}=13$ TeV in the $H\to \gamma \gamma$ channel using $139$ fb${}^{-1}$ of $pp$ collision data with the ATLAS experiment
• WIMPs during Reheating
• From WIMPs to FIMPs with Low Reheating Temperatures
• The simplest scoto-seesaw model: WIMP dark matter phenomenology and Higgs vacuum stability
• Shining Light on the Scotogenic Model: Interplay of Colliders and Cosmology
• Loop-Generated Neutrino Masses in Composite Higgs Models
• Exploring Inert Scalars at CLIC
• Observable Signatures of Scotogenic Dirac Model
• Unraveling the Scotogenic Model at Muon Collider
• The XLZD Design Book: Towards the Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
• Dark matter in the Scotogenic model with spontaneous lepton number violation
• WIMP and FIMP dark matter in the inert doublet plus singlet model
• Phenomenological profile of scotogenic fermionic dark matter
• Fermionic Dark Matter in Dynamical Scotogenic Model
• Dark matter as the source of neutrino mass: theory overview and experimental prospects
• Revisiting the decoupling limit of the Georgi-Machacek model with a scalar singlet
• Freeze-in and freeze-out production of Higgs portal Majorana fermionic dark matter during and after reheating