Scalar dark matter with a μΤ flavored mediator

We study a renormalizable scalar singlet dark matter model based on Z4 lepton flavor symmetry. A mu tau philic scalar doublet is introduced as a mediator which connects dark matter and standard model particles. The observed relic abundance of the dark matter is easily maintained while satisfying the current severe constraints on the dark matter from various experiments and observations thanks to the flavor off-diagonal interactions of scalar mediators. We further explore the possibility of dark matter direct detection through the one-loop process. We also find that the relic abundance of the dark matter and the discrepancy of the muon anomalous magnetic moment can be explained by the mu tau-philic scalar mediator simultaneously.

Automated summary

This study investigates a renormalizable scalar singlet dark matter model based on Z4 lepton flavor symmetry, with the introduction of a mu tau-philic scalar doublet as a mediator connecting dark matter and standard model particles. The flavor off-diagonal interactions of scalar mediators help to easily maintain the observed relic abundance of dark matter and satisfy the current severe constraints from various experiments and observations. The possibility of dark matter direct detection through a one-loop process is also explored, and it is found that the relic abundance of dark matter and the discrepancy of the muon anomalous magnetic moment can be explained simultaneously by the mu tau-philic scalar mediator.