Description
The dark matter (DM) direct detection experiments give a strong upper bound on the DM-nucleon scattering cross section. In fermionic DM models with pseudoscalar mediators, the tree-level amplitude for the DM-nucleon elastic scattering is suppressed by the momentum transfer in the non-relativistic limit. This is a nice feature to avoid the constraint from the direct detection experiments. However, it is not suppressed at the loop level, and thus the loop corrections are essential to discuss the sensitivities of the direct detection experiments for the model prediction. In this talk, we show the cross section obtained by the improved analysis at the loop level and discuss the region where the cross section becomes large.
Primary author
Dr
Tomohiro ABE
(Nagoya University)
Co-authors
Prof.
Junji HISANO
(Nagoya university)
Motoko Fujiwara
(Nagoya University)
Dr
Yutaro Shoji
(Nagoya University)
