On the Correlation Between the Spin-Independent and Spin-Dependent Direct Detection of Dark Matter

TL;DR

This paper investigates the relationship between spin-independent and spin-dependent dark matter detection methods within the MSSM framework, analyzing conditions for their correlation and deriving bounds on scattering mediated by Z bosons.

Contribution

It provides a comprehensive analysis of the correlation between different dark matter detection channels and establishes bounds on spin-dependent scattering in the MSSM context.

Findings

Correlation exists under certain conditions in MSSM

Upper bounds on Z-mediated spin-dependent scattering derived

Fine-tuning affects the correlation breakdown

Abstract

We study the correlation between spin-independent and spin-dependent scattering in the context of MSSM neutralino dark matter for both thermal and non-thermal histories. We explore the generality of this relationship with reference to other models. We discuss why either fine-tuning or numerical coincidences are necessary for the correlation to break down. We derive upper bounds on spin-dependent scattering mediated by a Z boson.