Compact storage ring to search for the muon electric dipole moment
A. Adelmann, K. Kirch, C.J.G. Onderwater, and T. Schietinger

TL;DR
This paper proposes a compact storage ring design using the frozen spin method to measure the muon's electric dipole moment with high precision, potentially testing Standard Model extensions.
Contribution
It introduces a novel, compact storage ring concept for muon EDM searches, demonstrating its feasibility and potential sensitivity improvements over current methods.
Findings
Achieves a sensitivity of ~5 x 10^{-23} e·cm at existing facilities.
Projects a future sensitivity of ~5 x 10^{-25} e·cm with high-power muon sources.
Validates the compact ring and frozen spin approach as a promising technique for charged particle EDM measurements.
Abstract
We present the concept of a compact storage ring of less than 0.5 m orbit radius to search for the electric dipole moment of the muon () by adapting the "frozen spin" method. At existing muon facilities a statistics limited sensitivity of can be achieved within one year of data taking. Reaching this precision would demonstrate the viability of this novel technique to directly search for charged particle EDMs and already test a number of Standard Model extensions. At a future, high-power muon facility a statistical reach of seems realistic with this setup.
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Taxonomy
TopicsComputational Physics and Python Applications · Particle physics theoretical and experimental studies · Astrophysics and Cosmic Phenomena
