WIMP capture and annihilation in the Earth in effective theories
Abstract
I calculate the rate of WIMP capture and annihilation in the Earth in the non-relativistic effective theory of dark matter-nucleon interactions. Neglecting operator interference, I consider all Galilean invariant interaction operators that can arise from the exchange of a heavy particle of spin less than or equal to one when WIMPs have spin 0, 1/2 or 1. I compute position and shape of the expected resonances in the mass - capture rate plane and show that Iron is not the most important element in the capture process for many currently ignored interaction operators. I compare these predictions with the recent results of an Earth WIMP analysis of IceCube in the 86-string configuration and set limits on all isoscalar and isovector coupling constants of the effective theory of dark matter-nucleon interactions. For certain interaction operators and for a dark matter particle mass of about 50 GeV, I find that these limits are stronger than those I have previously derived in an analysis of the solar WIMP search performed at IceCube in the 79-string configuration.
Keywords
Cite
@article{arxiv.1609.08967,
title = {WIMP capture and annihilation in the Earth in effective theories},
author = {Riccardo Catena},
journal= {arXiv preprint arXiv:1609.08967},
year = {2017}
}
Comments
28 pages, 12 figures. In all calculations, $^{59}$Ni replaced by $^{58}$Ni. Main results unchanged