Dirac right-handed sneutrino dark matter and its signature in the gamma-ray lines

Abstract

We show that a Dirac right-handed scalar neutrino can be weakly interacting massive particle in the neutrinophilic Higgs model. When the additional Higgs fields couple only to the leptonic sector through neutrino Yukawa couplings, the right number of relic density of dark matter can be obtained from thermal freeze-out of the dark matter annihilation into charged leptons and neutrinos. At present, this annihilation is suppressed by the velocity of dark matter. However one-loop annihilation cross section into $\gamma \gamma$ can be larger than that of the helicity suppressed annihilation into fermions, because relevant coupling constants are different. Hence, gamma-ray line signal which might have been observed in the Fermi-LAT is also able to be explained by its annihilation.

11pages, final version

References in corpus (15)

• Giant Gamma-ray Bubbles from Fermi-LAT: AGN Activity or Bipolar Galactic Wind?
• Significant Gamma Lines from Inert Higgs Dark Matter
• A Model of TeV Scale Physics for Neutrino Mass, Dark Matter and Baryon Asymmetry and its Phenomenology
• Right-handed sneutrino as thermal dark matter
• A New Two Higgs Doublet Model
• Singlet Scalar Dark Matter: monochromatic gamma rays and metastable vacua
• Right-Handed Sneutrino as Cold Dark Matter of the Universe
• Revival of the Thermal Sneutrino Dark Matter
• Right-handed sneutrino dark matter in the NMSSM
• Enhancing Dark Matter Annihilation into Neutrinos
• LHC phenomenology of a two-Higgs-doublet neutrino mass model
• Light mixed sneutrinos as thermal dark matter
• Right-handed sneutrino dark matter in $\mathbf{U}(1{)}^{\prime }$ seesaw models and its signatures at the LHC
• Gamma-ray Lines in the Fermi Data: is it a Bubble?
• Low scale thermal leptogenesis in neutrinophilic Higgs doublet models

Cited by in corpus (49)

• Loop-induced dark matter direct detection signals from gamma-ray lines
• Internal Bremsstrahlung Signature of Real Scalar Dark Matter and Consistency with Thermal Relic Density
• 130 GeV gamma-ray line and enhancement of $h\to \gamma \gamma$ in the Higgs triplet model plus a scalar dark matter
• What if Dark Matter Gamma-Ray Lines come with Gluon Lines?
• Is the 130 GeV Line Real? A Search for Systematics in the Fermi-LAT Data
• UV Completions of Magnetic Inelastic Dark Matter and RayDM for the Fermi Line(s)
• Investigating Gamma-Ray Lines from Dark Matter with Future Observatories
• Three Exceptions for Thermal Dark Matter with Enhanced Annihilation to Gamma Gamma
• Two Component Dark Matter : A Possible Explanation of 130 GeV γ-Ray Line from the Galactic Centre
• A 130 GeV photon line from dark matter annihilation in the NMSSM
• Fermi Gamma Ray Line at 130 GeV from Axion-Mediated Dark Matter
• Mixed sneutrino dark matter in light of the 2011 XENON and LHC results
• Inelastic extra $U(1)$ charged scalar dark matter
• Composite magnetic dark matter and the 130 GeV line
• Gravity-mediated (or Composite) Dark Matter Confronts Astrophysical Data
• Multiple Gamma Lines from Semi-Annihilation
• Neutralino dark matter and the Fermi gamma-ray lines
• Galactic Center Radio Constraints on Gamma-Ray Lines from Dark Matter Annihilation
• The 130 GeV Fingerprint of Right-Handed Neutrino Dark Matter
• Probing Charged Matter Through Higgs Diphoton Decay, Gamma Ray Lines, and EDMs
• Top Quark Mediated Dark Matter
• Fermi-LAT gamma-ray signal from Earth Limb, systematic detector effects and their implications for the 130 GeV gamma-ray excess
• Looking for new charged states at the LHC: Signatures of Magnetic and Rayleigh Dark Matter
• Interplay between Fermi gamma-ray lines and collider searches
• The 130 GeV gamma-ray line and generic dark matter model building constraints from continuum gamma rays, radio and antiproton data
• Statistical interpretation of the spatial distribution of current 130 GeV gamma-ray line signal within the dark matter annihilation scenario
• Light Dirac right-handed sneutrino dark matter
• Natural explanation for 130 GeV photon line within vector boson dark matter model
• A Simple Recipe for the 111 and 128 GeV Lines
• Right Sneutrino Dark Matter and a Monochromatic Photon Line
• PAMELA/Fermi-LAT electron cosmic ray spectrum at $\sim$100 GeV: implication for dark matter annihilation signal in accordance with the 130 GeV $\gamma$-ray line
• Are Lines From Unassociated Gamma-Ray Sources Evidence For Dark Matter Annihilation?
• General calculation of the cross section for dark matter annihilations into two photons
• Indirect dark-matter detection with MadDM v3.2 -- Lines and Loops
• Resonant slepton production and right sneutrino dark matter in left-right supersymmetry
• Large invisible decay of a Higgs boson to neutrinos
• A Clustering Analysis of the Morphology of the 130 GeV Gamma-Ray Feature
• Phenomenological constraints on light mixed sneutrino dark matter scenarios
• Vector Higgs-portal dark matter and Fermi-LAT gamma ray line
• Hidden Sector Dark Matter with Global $U(1{)}_X$-symmetry and Fermi-LAT 130 GeV $\gamma$-ray Excess
• Resonant leptogenesis with mild degeneracy
• Right-handed sneutrinos as asymmetric DM and neutrino masses from neutrinophilic Higgs bosons
• Constraining the monochromatic gamma-rays from dark matter annihilation by the LHC
• Interpretations of the possible 42.7 GeV $\gamma$-ray line
• Phenomenology in supersymmetric neutrinophilic Higgs model with sneutrino dark matter
• Remarks on Two Gamma Ray Lines from the Inner Galaxy
• Higgs, supersymmetry and dark matter after Run I of the LHC
• Displaced lepton flavour violating signatures of right-handed sneutrinos in $U(1{)}^{\prime }$ supersymmetric models
• 130GeV gamma-ray line through axion conversion