Speaker
Ji-Seon Song
(Chung-Ang University)
Description
We propose a new mechanism to communicate between fermion dark matter and the SM only through the four-form flux. The four-form couplings are responsible for the relaxation of the Higgs mass to the correct value and the initial displacement of the reheating pseudo-scalar field from the minimum. We show that the simultaneous presence of the pseudo-scalar coupling to fermion DM and the flux-induced Higgs mixing gives rise to unsuppressed annihilations of DM into the SM particles at present, whereas the direct detection bounds from XENON1T can be avoided.
