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arXiv · 2305.12668

Direct detection of cosmic ray-boosted puffy dark matter

Wenyu Wang·Wu-Long Xu·Jin Min Yang·Rui Zhu
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Abstract

For the light relativistic dark matter (DM) boosted by high energy cosmic ray, its scattering cross section with the nucleon is sensitively dependent on the momentum-transfer and such an dependence is caused by the mediator in the scattering. For puffy DM particle with a size, the momentum-transfer dependence can also arise from the DM radius effect. All these momentum-transfer dependences should be considered. In this note we study the direct detection limits on the cosmic ray-boosted puffy DM for a simplified model with a light mediator. For comparison, we first re-derive the direct detection limits on the cosmic ray-boosted point-like DM. We display the limits on various planes of parameters and find that the limits for the cosmic ray-boosted puffy DM are stronger than for the point-like DM.

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Wenyu Wang, Wu-Long Xu, Jin Min Yang, Rui Zhu. 2023-05-22. Direct detection of cosmic ray-boosted puffy dark matter. https://arxiv.org/abs/2305.12668

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