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arXiv · 2210.01812

Light Dark Matter Accumulating in Planets: Nuclear Scattering

Joseph Bramante·Jason Kumar·Gopolang Mohlabeng·Nirmal Raj·Ningqiang Song
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Abstract

We present, for the first time, a complete treatment of strongly-interacting dark matter capture in planets, taking Earth as an example. We focus on light dark matter and the heating of Earth by dark matter annihilation, addressing a number of crucial dynamical processes which have been overlooked, such as the "ping-pong effect" during dark matter capture. We perform full Monte-Carlo simulations and obtain improved bounds on strongly-interacting dark matter from Earth heating and direct detection experiments for both spin-independent and spin-dependent interactions, while also allowing for the interacting species to make up a sub-component of the cosmological dark matter.

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Joseph Bramante, Jason Kumar, Gopolang Mohlabeng, Nirmal Raj, Ningqiang Song. 2022-10-04. Light Dark Matter Accumulating in Planets: Nuclear Scattering. https://arxiv.org/abs/2210.01812

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