Fig. 4 Contours of good relic density in our free parameter slice comprised by the DM mass
(m DM ) and the cut-off scale (Λ), which needs to be the highest scale available in our framework.
The enhancements in the production rates due to on-shell exchange of mediators need to be
compensated as to provide the same relic density value. In this slice, the rates can be lowered
by higher values of Λ. The gray region, corresponding to Λ above the Planck scale, is of course
no meaningful but shown for an overview of the contours’ behavior. We can see that the freezein is able to produce the right amount of dark matter for moduli mediator and reheating scale at
intermediate scales
(m DM ) and the cut-off scale (Λ), which needs to be the highest scale available in our framework.
The enhancements in the production rates due to on-shell exchange of mediators need to be
compensated as to provide the same relic density value. In this slice, the rates can be lowered
by higher values of Λ. The gray region, corresponding to Λ above the Planck scale, is of course
no meaningful but shown for an overview of the contours’ behavior. We can see that the freezein is able to produce the right amount of dark matter for moduli mediator and reheating scale at
intermediate scales