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arXiv · 1405.6690

Model-independent Analyses of Dark-Matter Particle Interactions

Nikhil Anand·A. Liam Fitzpatrick·W. C. Haxton
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Abstract

A model-independent treatment of dark-matter particle elastic scattering has been developed, yielding the most general interaction for WIMP-nucleon low-energy scattering, and the resulting amplitude has been embedded in the nucleus, taking into account the selection rules imposed by parity and time-reversal. One finds that, in contrast to the usual spin-independent/spin-dependent (SI/SD) formulation, the resulting cross section contains six independent nuclear response functions, three of which are associated with possible velocity-dependent interactions. We find that current experiments are four orders of magnitude more sensitive to derivative couplings than is apparent in the standard SI/SD treatment, which necessarily associates such interactions with cross sections proportional to the square of the WIMP velocity relative to the nuclear center of mass.

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Nikhil Anand, A. Liam Fitzpatrick, W. C. Haxton. 2014-05-26. Model-independent Analyses of Dark-Matter Particle Interactions. https://arxiv.org/abs/1405.6690

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