Annihilation of singlet fermionic dark matter into two photons

Abstract

We consider an extension of the standard model in which a singlet fermionic particle, to serve as cold dark matter, and a singlet Higgs are added. We perform a reanalysis on the free parameters. In particular, demanding a correct relic abundance of dark matter, we derive and plot the coupling of the singlet fermion with the singlet Higgs, $g_s$, versus the dark matter mass. We analytically compute the pair annihilation cross section of singlet fermionic dark matter into two photons. The thermally averaged of this cross section is calculated for wide range of energies and plotted versus dark matter mass using $g_s$ consistent with the relic abundance condition. We also compare our results with the Fermi-Lat observations.

12 pages, 3 figures, to appear in JCAP

References in corpus (37)

• Particle Dark Matter: Evidence, Candidates and Constraints
• Supersymmetric Dark Matter
• Gauge Singlet Scalars as Cold Dark Matter
• The Minimal Model of Nonbaryonic Dark Matter: A Singlet Scalar
• Is the Lightest Kaluza-Klein Particle a Viable Dark Matter Candidate?
• Kaluza-Klein Dark Matter
• TeV Symmetry and the Little Hierarchy Problem
• Thermally Generated Gauge Singlet Scalars as Self-Interacting Dark Matter
• Little Hierarchy, Little Higgses, and a Little Symmetry
• The New Minimal Standard Model
• Dark Matter Detection in the Light of Recent Experimental Results
• Gravitino Dark Matter in R-Parity Breaking Vacua
• Significant Gamma Lines from Inert Higgs Dark Matter
• Gravitino Dark Matter without R-parity
• Fermi LAT Search for Photon Lines from 30 to 200 GeV and Dark Matter Implications
• Constraints on Cosmological Dark Matter Annihilation from the Fermi-LAT Isotropic Diffuse Gamma-Ray Measurement
• Search for the Higgs portal to a singlet fermionic dark matter at the LHC
• Singlet fermionic dark matter
• Gamma Ray Spectrum from Gravitino Dark Matter Decay
• The minimal model of fermionic dark matter
• High Energy Cosmic Rays from the Decay of Gravitino Dark Matter
• Cosmological Constraints on an Invisibly Decaying Higgs Boson
• Gamma-Rays from Decaying Dark Matter
• Gamma rays from the annihilation of singlet scalar dark matter
• 130 GeV gamma-ray line and enhancement of $h\to \gamma \gamma$ in the Higgs triplet model plus a scalar dark matter
• Gamma-ray detection from gravitino dark matter decay in the $\mu \nu$SSM
• Two photon annihilation of Kaluza-Klein dark matter
• Global Study of the Simplest Scalar Phantom Dark Matter Model
• Self-annihilation of the neutralino dark matter into two photons or a Z and a photon in the MSSM
• Singlet Fermionic Dark Matter explains DAMA signal
• Probing Gravitino Dark Matter with PAMELA and Fermi
• Gravitino dark matter and neutrino masses with bilinear R-parity violation
• CLUES on Fermi-LAT prospects for the extragalactic detection of munuSSM gravitino Dark Matter
• Light Dark Matter Annihilations into Two Photons
• The Enigma of the Dark Matter
• Singlet particles as cold dark matter in noncommutative space-time
• Dark Matter: the Connection with Gamma-Ray Astrophysics

Cited by in corpus (14)

• Constraining Minimal $U(1{)}_{B-L}$ model from Dark Matter Observations
• Multi-Component Dark Matter: the vector and fermion case
• Two component WIMP-FImP dark matter model with singlet fermion, scalar and pseudo scalar
• Inert Doublet Dark Matter with an additional scalar singlet and 125 GeV Higgs Boson
• Two Component Feebly Interacting Massive Particle (FIMP) Dark Matter
• A Minimal Model For Two-Component FIMP Dark Matter: A Basic Search
• Constraining Inert Triplet Dark Matter by the LHC and FermiLAT
• Hydrogen and muonic-Hydrogen Atomic Spectra in Non-commutative Space-Time
• Footprint of Triplet Scalar Dark Matter in Direct, Indirect Search and Invisible Higgs Decay
• Analyzing of singlet fermionic dark matter via the updated direct detection data
• A new parameter space study of the singlet fermionic cold dark matter model
• Hidden Sector Dark Matter with Global $U(1{)}_X$-symmetry and Fermi-LAT 130 GeV $\gamma$-ray Excess
• Possible explanation of indirect gamma ray signatures from hidden sector fermionic dark matter
• Annihilation of singlet fermionic dark matter into two photons via pseudo-scalar mediator