Non-standard scaling laws of WIMP-nucleus interactions in WIMP direct detection

TL;DR

This paper investigates non-standard WIMP-nucleus interaction scaling laws in direct detection experiments, analyzing how momentum dependence and isospin violation affect exclusion limits using a Maxwellian velocity distribution.

Contribution

It introduces a detailed analysis of non-standard spin-dependent interactions, extending the understanding of WIMP detection beyond conventional models.

Findings

Non-standard interactions significantly alter exclusion plots.

Momentum dependence impacts detection sensitivity.

Isospin violation affects experimental constraints.

Abstract

Guided by the non-relativistic effective field theory of interactions between Weakly Interacting Massive Particles (WIMPs) of spin 1/2 and nuclei we study direct detection exclusion plots for an example of non-standard spin-dependent interaction and compare it to the standard one. We analyze an extensive list of 15 existing experiments including the effects of momentum dependence and isospin violation. In our analysis, we fixed the dark matter velocity distribution to a Maxwellian.