Protophobic Light Vector Boson as a Mediator to the Dark Sector

Abstract

The observation of a protophobic 16.7 MeV vector boson has been reported by a ${}^8$Be nuclear transition experiment. Such a new particle could mediate between the Standard Model and a dark sector, which includes the dark matter. In this paper, we show some simple models of the dark matter which satisfy the thermal relic abundance under the current experimental bounds from the direct and the indirect detections. In a model, it is found that an appropriate self-scattering cross section to solve the small scale structure puzzles can be achieved.

arXiv comment7 pages, 7 figures; version published in PRD

References in corpus (25)

• Planck 2015 results. XIII. Cosmological parameters
• First results from the LUX dark matter experiment at the Sanford Underground Research Facility
• Secluded WIMP Dark Matter
• Update on scalar singlet dark matter
• Non-Perturbative Effect on Dark Matter Annihilation and Gamma Ray Signature from Galactic Center
• Dark Matter Halos as Particle Colliders: A Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters
• Beyond Collisionless Dark Matter: Particle Physics Dynamics for Dark Matter Halo Structure
• Physics reach of the XENON1T dark matter experiment
• Observation of Anomalous Internal Pair Creation in ${}^8$Be: A Possible Signature of a Light, Neutral Boson
• Sommerfeld factor for arbitrary partial wave processes
• Protophobic Fifth Force Interpretation of the Observed Anomaly in ${}^8$Be Nuclear Transitions
• Can WIMP Dark Matter overcome the Nightmare Scenario?
• Model-Independent Indirect Detection Constraints on Hidden Sector Dark Matter
• Relic densities including Sommerfeld enhancements in the MSSM
• Constraints on the off-shell Higgs boson signal strength in the high-mass $ZZ$ and $WW$ final states with the ATLAS detector
• Constraints on Hidden Photon Models from Electron g-2 and Hydrogen Spectroscopy
• Direct Evaluation of the Quark Content of Nucleons from Lattice QCD at the Physical Point
• Limits on the Higgs boson lifetime and width from its decay to four charged leptons
• Direct Detection Signatures of Self-Interacting Dark Matter with a Light Mediator
• Effects of Bound States on Dark Matter Annihilation
• The Sommerfeld enhancement for scalar particles and application to sfermion co-annihilation regions
• Light Dark Matter Anomalies After LUX
• A light particle solution to the cosmic lithium problem
• CMB Constraint on Dark Matter Annihilation after Planck 2015
• Light mediators in dark matter direct detections

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• Asymmetric dark matter with a spontaneously broken $U(1{)}^{\prime }$: self-interaction and gravitational waves
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• Searching for new light gauge bosons at $e^{+}{e}^{-}$ colliders
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• Unification of the Standard Model and Dark Matter Sectors in [SU(5)$\times$U(1)]${}^4$
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• A scale at 10 MeV, gravitational topological vacuum, and large extra dimensions
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