Natural supersymmetry at a muon collider

TL;DR

This paper explores the potential of a muon collider with variable energies to detect natural supersymmetry, focusing on sparticle thresholds and Higgs resonances, thus advancing BSM physics research.

Contribution

It analyzes the capabilities of a muon collider at various energies for probing natural SUSY, emphasizing its utility in detecting sparticle thresholds and Higgs resonances.

Findings

Muon colliders can effectively target sparticle thresholds.

Variable energy muon colliders are optimal for Higgs resonance studies.

Potential to explore a wide range of SUSY mass spectra.

Abstract

There is great interest within the particle physics community for building a $\mu^+\mu^-$ collider with center-of-mass (CoM) energies ranging from $\sqrt{s}\sim$ 1-14 TeV. For Beyond-the-Standard-Model (BSM) physics, natural supersymmetry seems perhaps the most motivated, plausible extension of the Standard Model. Here, we examine what can be accomplished by a muon collider with regards to natural SUSY at various muon collider CoM energies. In natural SUSY -- especially in the guise that would emerge from the string landscape -- one expects sparticles to be spread over two orders of magnitude in mass values. A muon collider with highly variable beam energies would be most useful for targeting 2-body reaction thresholds and Higgs boson resonances.