Signatures from Scalar Dark Matter with a Vector-like Quark Mediator

Abstract

We present a comprehensive study of a model where the dark matter is composed of a singlet real scalar that couples to the Standard Model predominantly via a Yukawa interaction with a light quark and a colored vector-like fermion. A distinctive feature of this scenario is that thermal freeze-out in the early universe may be driven by annihilation both into gluon pairs at one-loop ($gg$) and by virtual internal Bremsstrahlung of a gluon ($q\bar{q}g$). Such a dark matter candidate may also be tested through direct and indirect detection and at the LHC; viable candidates have either a mass nearly degenerate with that of the fermionic mediator or a mass above about 2 TeV.

30 pages, 10 figures. Matches published version

References in corpus (23)

• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data
• Gauge Singlet Scalars as Cold Dark Matter
• micrOMEGAs4.1: two dark matter candidates
• Updated Search for Spectral Lines from Galactic Dark Matter Interactions with Pass 8 Data from the Fermi Large Area Telescope
• Next-to-next-to-leading soft-gluon corrections for the top quark cross section and transverse momentum distribution
• Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S
• New Gamma-Ray Contributions to Supersymmetric Dark Matter Annihilation
• Gluon contribution to the dark matter direct detection
• Effective Theories for Dark Matter Nucleon Scattering
• Dark Matter and Gauge Coupling Unification in Non-supersymmetric SO(10) Grand Unified Models
• Singlet Scalar Dark Matter: monochromatic gamma rays and metastable vacua
• Minimal Left-Right Symmetric Dark Matter
• Gamma rays from the annihilation of singlet scalar dark matter
• Signatures of Majorana dark matter with t-channel mediators
• Majorana Dark Matter with a Coloured Mediator: Collider vs Direct and Indirect Searches
• Anatomy of Coannihilation with a Scalar Top Partner
• The WIMP Forest: Indirect Detection of a Chiral Square
• Scalar dark matter in the B-L model
• Sharp Gamma-ray Spectral Features from Scalar Dark Matter Annihilations
• Bremsstrahlung and Gamma Ray Lines in 3 Scenarios of Dark Matter Annihilation
• Fermion dark matter from SO(10)

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• Diphoton excess at 750 GeV and LHC constraints in models with vector-like particles
• Impact of cosmological and astrophysical constraints on dark matter simplified models
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• Stability of the Standard Model Vacuum with Vector-Like Leptons: A Critical Examination
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• Loop effect with vector mediator in the coherent neutrino-nucleus scattering
• Loop effect in the coherent neutrino-nucleus scattering
• LHC Dark Matter Signals from Vector Resonances and Top Partners