Dark Matter

Paper introduce: Primordial black holes can play a role as a factory to produce new BSM particles

We show that MUonE can also discover thermal relic dark matter using only its nominal experimental setup. Furthermore, our results show that the downstream ECAL plays a key role in rejecting backgrounds for this search, thereby providing strong motivation for the MUonE to keep this component in the final experimental design.

I work on experimental and cosmological searches of dark sector mediators.

We investigate the cosmological imprints of neutrino-DM-mediator interaction in a model-independent way, including the extra contribution of $N_{\rm eff}$ and the distortion of C$\nu$B. Lyman-$\alpha$ constraint is also discussed. To do this, we implemented a universal approach to solve the time evolution of dark matter in both freeze-in and freeze-out case.

An introduction about strong CP problem and its solutions. Readers are assumed to have basic knowledge of quantum field theory, but not more.

A type of models that can solve the strong CP problem, with large potential to explain the origin of matter-antimatter asymmetry and provide dark matter candidate.

We demonstrate how to search for dark photons by displaced vertex search at the proposed MUonE experiment in the mass range $10~\mathrm{MeV} \le m_{A’} \le 100~\mathrm{MeV}$ and kinetic mixing parameter $10^{-5} \le \epsilon e \le 10^{-3}$, through the process $\mu^{\pm}, e^- \to \mu^{\pm}, e^-, A’$ followed by $A’\to e^+e^-$.