The muon EDM experiment at Paul Scherrer Institute (PSI)

Abstract

An elementary particle's electric dipole moment (EDM) violates T-symmetry, thereby violating CP symmetry if CPT invariance is assumed. This violation could potentially explain the observed antimatter-matter asymmetry in our universe. The muon's EDM, as predicted by the Standard Model (SM), is expected to be extremely small (${10}^{-38}e\cdot$cm), making it experimentally unreachable in the short term. However, some beyond the SM theories predict the muon EDM could be as large as ${10}^{-22}e\cdot$cm. A new dedicated muon EDM experiment will be conducted at PSI, aiming to achieve $6\times {10}^{-23}e\cdot$cm sensitivity using the frozen spin technique. This sensitivity will allow some BSM predictions to be probed. This article provides an overview of the PSI muEDM experiment and outlines its progress.