https://doi.org/10.1140/epjc/s10052-023-11643-3
Regular Article - Theoretical Physics
Loop enhancement of direct detection cross section in a fermionic dark matter model
Physics Department, Faculty of Sciences, Arak University, 38156-8-8349, Arak, Iran
Received:
26
January
2023
Accepted:
21
May
2023
Published online:
6
June
2023
We investigate the effect of one loop quantum corrections on the elastic scattering of dark matter off the nucleon in a fermionic dark matter model. The model introduces two new singlet fermions and a singlet scalar. The fermions communicate with the SM particles through a Higgs portal. It is found that some viable regions in the parameter space respecting the bounds from the observed relic density, the Higgs invisible decay width, and direct detection experiment, will be shrunk significantly when one loop effects are taken into account. The regions already resided below the neutrino floor, partly may come into regions which are testable by the current or future direct detection experiments. In addition, some regions being viable at tree level, may be excluded when quantum corrections are included.
© The Author(s) 2023
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