Singlet Scalar Dark Matter: monochromatic gamma rays and metastable vacua

Abstract

We calculate the pair-annihilation cross section of real scalar singlet dark matter into two mono-energetic photons. We derive constraints on the theory parameter space from the Fermi limits on gamma-ray lines, and we compare with current limits from direct dark matter detection. We show that the new limits, albeit typically relevant only when the dark matter mass is close to half the Standard Model Higgs mass, rule out regions of the theory parameter space that are otherwise not constrained by other observations or experiments. In particular, the new excluded regions partly overlap with the parameter space where real scalar singlet dark matter might explain the anomalous signals observed by CDMS. We also calculate the lifetime of unstable vacuum configurations in the scalar potential, and show that the gamma-ray limits are quite relevant in regions where the electro-weak vacuum is meta-stable with a lifetime longer than the age of the universe.

21 pages, 6 figures; references added, minor additions to text and figures, version accepted for publication in Phys. Rev. D

References in corpus (35)

• A Universal Density Profile from Hierarchical Clustering
• Supersymmetric Dark Matter
• Observation of an anomalous positron abundance in the cosmic radiation
• Minimal Dark Matter
• Gauge Singlet Scalars as Cold Dark Matter
• The Minimal Model of Nonbaryonic Dark Matter: A Singlet Scalar
• Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
• Results from the Final Exposure of the CDMS II Experiment
• LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
• Singlet Higgs Phenomenology and the Electroweak Phase Transition
• First Dark Matter Results from the XENON100 Experiment
• Complex Singlet Extension of the Standard Model
• Dark Matter and Collider Phenomenology of Universal Extra Dimensions
• The New Minimal Standard Model
• Observations of Milky Way Dwarf Spheroidal galaxies with the Fermi-LAT detector and constraints on Dark Matter models
• Minimal Extension of the Standard Model Scalar Sector
• On possible interpretations of the high energy electron-positron spectrum measured by the Fermi Large Area Telescope
• Vacuum Stability, Perturbativity, and Scalar Singlet Dark Matter
• Dark matter, the CMSSM and lattice QCD
• WIMP dark matter, Higgs exchange and DAMA
• Fermi LAT Search for Photon Lines from 30 to 200 GeV and Dark Matter Implications
• The Electroweak Phase Transition in a Nonminimal Supersymmetric Model
• Constraints on Scalar Dark Matter from Direct Experimental Searches
• A light scalar WIMP through the Higgs portal and CoGeNT
• Constraints on inelastic dark matter from XENON10
• Matter parity as the origin of scalar Dark Matter
• The Simplest Dark-Matter Model, CDMS II Results, and Higgs Detection at LHC
• Gamma rays from the annihilation of singlet scalar dark matter
• CDMS stands for Constrained Dark Matter Singlet
• TeV Scale Singlet Dark Matter
• Numerical Approach to Multi Dimensional Phase Transitions
• Search with EGRET for a Gamma Ray Line from the Galactic Center
• Light Higgs Boson, Light Dark Matter and Gamma Rays
• Large contributions to dark matter annihilation from three-body final states
• Constraints on Scalar Phantoms

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• Exploring dynamical CP violation induced baryogenesis by gravitational waves and colliders
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• Fermi Bubbles under Dark Matter Scrutiny Part II: Particle Physics Analysis
• Improved bounds on ${\mathbb{Z}}_3$ singlet dark matter
• GAMBIT and its Application in the Search for Physics Beyond the Standard Model
• Singlet Dark Matter in Type II Two Higgs Doublet Model
• Fermi-LAT gamma-ray signal from Earth Limb, systematic detector effects and their implications for the 130 GeV gamma-ray excess
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• Real singlet scalar dark matter extension of the Georgi-Machacek model
• Scalar Dark Matter: Real vs Complex
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• On the origin of the gamma-ray emission from Omega Centauri: Milisecond pulsars and dark matter annihilation
• Leptoquarks and Real Singlets: A Richer Scalar Sector Behind the Origin of Dark Matter
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• Vacuum Stability in the one-loop approximation of a 331 Model
• A Real Triplet-Singlet Extended Standard Model: Dark Matter and Collider Phenomenology
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• $Z_3$ meta-stable states in PNJL model
• Direct signals from electroweak singlets through the Higgs portal
• The Dilaton-like Higgs boson with scalar singlet dark matter
• Bayesian WIMP detection with the Cherenkov Telescope Array
• Gravitational SIMPs