Magnetic Fluffy Dark Matter
Kunal Kumar, Arjun Menon, Tim M. P. Tait

TL;DR
This paper investigates extended models of inelastic and magnetic inelastic dark matter, analyzing their compatibility with direct detection experiments and identifying allowed parameter regions.
Contribution
It introduces models where WIMPs can transition to heavier states and evaluates their experimental constraints, highlighting a viable parameter space for magnetic inelastic dark matter.
Findings
Most DAMA/LIBRA preferred regions are excluded by CDMS and XENON.
A viable parameter space exists for magnetic inelastic dark matter at around 11 GeV.
Constraints are tight for spin-independent scattering but less so for magnetic interactions.
Abstract
We explore extensions of inelastic Dark Matter and Magnetic inelastic Dark Matter where the WIMP can scatter to a tower of heavier states. We assume a WIMP mass GeV and a constant splitting between successive states keV. For the spin-independent scattering scenario we find that the direct experiments CDMS and XENON strongly constrain most of the DAMA/LIBRA preferred parameter space, while for WIMPs that interact with nuclei via their magnetic moment a region of parameter space corresponding to GeV and keV is allowed by all the present direct detection constraints.
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