The new interaction suggested by the anomalous ${}^8$Be transition sets a rigorous constraint on the mass range of dark matter

Abstract

The WIMPs are considered one of the favorable dark matter (DM) candidates, but as the upper bounds on the interactions between DM and standard model (SM) particles obtained by the upgraded facilities of DM direct detections get lower and lower. Researchers turn their attentions to search for less massive DM candidates, i.e. light dark matter of MeV scale. The recently measured anomalous transition in ${}^8$Be suggests that there exists a vectorial boson which may mediate the interaction between DM and SM particles. Based on this scenario, we combine the relevant cosmological data to constrain the mass range of DM, and have found that there exists a model parameter space where the requirements are satisfied, a range of $10.4\lesssim m_{\varphi }\lesssim$ 16.7 MeV for scalar DM, and $13.6\lesssim m_V\lesssim$ 16.7 MeV for vectorial DM is demanded. Then a possibility of directly detecting such light DM particles via the DM-electron scattering is briefly studied in this framework.

arXiv comment13 Pages, 7 figures, references added, version accepted by journal

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Cited by in corpus (26)

• Light Axial Vectors, Nuclear Transitions, and the ${}^8$Be Anomaly
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• Can nuclear physics explain the anomaly observed in the internal pair production in the Beryllium-8 nucleus?
• QED Meson Description of the X17 and Other Anomalous Particles
• Atomki anomaly and dark matter in a radiative seesaw model with gauged $B-L$ symmetry
• Atomki Anomaly in Family-Dependent $U(1{)}^{\prime }$ Extension of the Standard Model
• Implication of the hidden sub-GeV bosons for the $(g-2{)}_{\mu }$, ${}^8$Be-${}^4$He anomaly, proton charge radius, EDM of fermions and dark axion portal
• Can a protophobic vector boson explain the ATOMKI anomaly?
• New Physics Suggested by Atomki Anomaly
• Is There a Sign of New Physics in Beryllium Transitions?
• 17 MeV Atomki anomaly from short-distance structure of spacetime
• Dark photon portal dark matter with the 21-cm anomaly
• Searching for new light gauge bosons at $e^{+}{e}^{-}$ colliders
• X17: A new force, or evidence for a hard $\gamma +\gamma$ process?
• Explanation of the 511 keV line: Cascade annihilating dark matter with the ${}^8$Be anomaly
• Atomki anomaly and the Secluded Dark Sector
• Could the 21-cm absorption be explained by the dark matter suggested by ${}^8$Be transitions?
• Dark leptophilic scalar with the updated muon $g-2$ anomaly
• Possible s-wave annihilation for MeV dark matter with the 21-cm absorption
• Naturalness and a light $Z^{\prime }$
• Interpretation of XENON1T excess with MeV boosted dark matter
• A scale at 10 MeV, gravitational topological vacuum, and large extra dimensions
• Interpretation of the Galactic gamma-ray excess with the dark matter indicated by ${}^8$Be and ${}^4$He anomalous transitions
• Classical electrodynamics and gauge symmetry of the X-boson
• QCD sum rule studies on the possible double-peak structure of the $X17$ particle
• Possible Explanation of the Electron Positron Anomaly at 17 MeV in ${}^{8}Be$ Transitions Through a Light Pseudoscalar