Speaker
Description
Electric dipole moments (EDM) of fundamental particles inherently violate the combined symmetry of charge-conjugation and parity inversion (CP) . At PSI we plan to measure the EDM of the muon using the frozen-spin technique within a compact storage trap. This method exploits the high effective electric field, E = 165 MV/m, experienced in the muon’s rest frame with a momentum of about 23 MeV/c when passing through a solenoidal magnetic field of B=2.5 T. In my talk, I will outline fundamental considerations for a muon EDM search and present the status for a demonstration experiment conducted at a secondary muon beamline of the Paul Scherrer Institute in Switzerland. In an initial phase the expected sensitivity to a muon EDM is 4E-21 ecm, assuming 200 days of data. In a subsequent phase, Phase 2, we propose to improve the sensitivity to 6E-23 ecm using a dedicated instrument installed on a different beamline that produces muons of momentum 125 MeV/c.
