Natural Twin Neutralino Dark Matter

Area of Science:

• High Energy Physics
• Cosmology
• Particle Physics

Background:

• Supersymmetric twin Higgs models address the electroweak hierarchy problem and reconcile the absence of new particles at the LHC.
• These models introduce a mirror sector with identical gauge symmetries to the Standard Model.

Purpose of the Study:

• To investigate the potential of supersymmetric twin Higgs models to provide a natural dark matter candidate.
• To explore if a lightest supersymmetric particle (LSP) in the form of a twin bino-like state can explain the observed dark matter abundance.

Main Methods:

• Analysis of the freeze-out abundance of a twin bino-like lightest supersymmetric particle within the supersymmetric twin Higgs framework.
• Examination of the parameter space for consistency with dark matter observations and experimental constraints.

Main Results:

• The freeze-out abundance of a twin bino-like lightest supersymmetric particle naturally explains the observed dark matter abundance without requiring fine-tuning of the mass spectrum.
• A significant portion of the viable parameter space can be tested by future dark matter direct detection experiments and LHC searches for specific supersymmetric particles.

Conclusions:

• Supersymmetric twin Higgs models provide a compelling and natural dark matter solution.
• Future experimental searches at direct detection facilities and the LHC are crucial for probing these models and confirming the dark matter candidate.