A compact frozen-spin trap for the search for the electric dipole moment of the muon

Summary

This paper outlines the fundamental physics considerations and presents a conceptual design for a demonstration experiment to search for the electric dipole moment of the muon using the frozen-spin technique in a compact storage trap. The proposed experiment exploits high effective electric fields generated by the muon's motion through a strong solenoidal magnetic field at the Paul Scherrer Institute in Switzerland. The two-phase approach aims to achieve unprecedented sensitivity to CP violation through precision measurement of muon EDM.

UK applicability

This is fundamental physics research not directly applicable to UK agricultural, soil, or nutritional systems. The work is primarily of interest to high-energy physics laboratories and institutions with comparable experimental capabilities.

Key measures

Muon electric dipole moment sensitivity (e·cm); effective electric field (165 MV/m); solenoidal magnetic field (2.5 T); muon momentum (23 MeV/c for Phase I, 125 MeV/c for Phase II); anticipated data acquisition period (200 days for Phase I)

Outcomes reported

The paper presents a conceptual design for a compact frozen-spin storage trap to measure the electric dipole moment of muons, with anticipated sensitivity of 4×10⁻²¹ e·cm in Phase I and 6×10⁻²³ e·cm in Phase II.

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