Probing New Physics with μ⁺ μ^- → bs at a Muon Collider

2023/06/26 by Altmannshofer, Wolfgang, Gadam, Sri Aditya, Profumo, Stefano
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2306.15017

Abstract

We show that bottom-strange production at a high-energy muon collider, μ⁺ μ^- → b s, is a sensitive probe of new physics. We consider the full set of four-fermion contact interactions that contribute to this process at dimension 6, and discuss the complementarity of a muon collider and of the study of rare B meson decays that also probe said new physics. If a signal were to be found at a muon collider, the forward-backward asymmetry of the b-jet provides diagnostics about the underlying chirality structure of the new physics. In the absence of a signal at a center of mass energy of 10~TeV, μ⁺ μ^- → b s can indirectly probe new physics at scales close to 100~TeV. We also discuss the impact that beam polarization has on the muon collider sensitivity performance.

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