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arXiv · 2112.01029

Thermal Leptophilic Light Vector Dark Matter with Spinor Mediator and Muon (g-2) Anomaly

Seyed Yaser Ayazi·Ahmad Mohamadnejad
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Abstract

Inspired by the recently new measurement of $(g-2)_{\mu}$ at FermiLab and reported upper bound for electron-dark matter (DM) recoil by the XENON1T collaboration, we revisited phenomenology of a light MeV scale vector dark matter in a leptophilic extension of standard model while a new spinor field plays the role of mediator. A viable parameter space is considered to discuss the possibility of light dark matter relic density as well as anomalous magnetic moment of the muon. We study DM-electron direct detection and cosmological bounds on the parameters space of the model. It is shown that although new bound of $(g-2)_{\mu}$ anomaly greatly confines the parametric space of the model, the thermal light dark matter can exist for $\rm M_{DM}\sim 10^{-1}-10^{1}~\rm GeV$.

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Seyed Yaser Ayazi, Ahmad Mohamadnejad. 2021-12-02. Thermal Leptophilic Light Vector Dark Matter with Spinor Mediator and Muon (g-2) Anomaly. https://doi.org/10.1007/s10773-022-05252-1

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