SUSY Dark Matter: Beyond the Standard Paradigm

TL;DR

This paper investigates a specific MSSM scenario where bino-like neutralino dark matter interacts via light sleptons, analyzing its compatibility with collider data, dark matter abundance, and detection prospects, highlighting new parameter decoupling methods.

Contribution

It introduces a novel parameter decoupling approach in MSSM, focusing on bino-like neutralino dark matter with light sleptons for consistent relic abundance and detection signals.

Findings

Annihilation via light slepton exchange can produce correct dark matter abundance.

Direct detection experiments may probe models with light squark left-right mixing.

Differences from typical MSSM expectations are identified and discussed.

Abstract

Within the framework of the Minimal Supersymmetric Standard Model (MSSM), we explore a decoupling of the parameters into separate sectors that determine consistency with collider data, the abundance of dark matter, and potential signatures at direct dark matter searches. We consider weak-scale bino-like neutralino dark matter, and find that annihilations via light slepton exchange present a viable mechanism for obtaining the appropriate dark matter abundance assuming a thermal history. Constraints and prospects for discovery of these models are discussed, including the possibility that direct dark matter searches may be sensitive to these models if light squarks exhibit left-right mixing. Differences between the scenarios presented here and the typical expectations for the MSSM are discussed.