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@INPROCEEDINGS{Nass:908219,
author = {Nass, Alexander},
title = {{T}he search for proton and deuteron {E}lectric {D}ipole
{M}oments using storage rings},
reportid = {FZJ-2022-02470},
year = {2020},
abstract = {The Standard Model (SM) of Particle Physics is not capable
to account for the apparent matter-antimatter asymmetry of
our Universe. Physics beyond the SM is required and is
either probedby employing highest energies (e.g., at LHC),
or by striving for ultimate precision and sensitivity(e.g.,
in the search for electric dipole moments). Permanent
electric dipole moments (EDMs) of par-ticles violate both
time reversal (T) and parity (P) invariance, and are via the
CPT-theorem alsoCP-violating. Finding a non-zero EDM would
be a strong indication for physics beyond the SM, andpushing
upper limits further provides crucial tests for any
corresponding theoretical model. Up tonow, EDM searches
focused on neutral systems (neutrons, atoms, and molecules).
Storage rings,however, offer the possibility to measure EDMs
of charged particles by observing the influence ofthe EDM on
the spin motion in the ring. Direct searches of proton and
deuteron EDMs bear thepotential to reach sensitivities
beyond 1E-29 e cm.Since the Cooler Synchrotron COSY at the
Forschungszentrum Jülich provides polarized protonsand
deuterons up to momenta of 3.7 GeV/c, it constitutes an
ideal testing ground and starting pointfor such an
experimental program. The collaboration is presently aiming
at a first direct (precursor)measurement of the deuteron EDM
in COSY, using an RF Wien filter that was specifically
designedfor that purpose. Beyond that, the technical design
of a prototype EDM storage ring constitutes thenext major
milestone of the JEDI research program, which shall be
addressed together with CERN inthe framework of a newly
formed CPEDM collaboration (Charged Particle Electric Dipole
Momentcollaboration).The talk will present the JEDI plans
for the measurement of proton and deuteron EDMs, and
discussthe various technical developments, and also show
recent results.This work is supported by an ERC
Advanced-Grant of the European Union (srEDM, No. 694340).},
month = {Jun},
date = {2020-06-08},
organization = {Conference on Flavour Physics and CP
violation 2020, A Toxa (online)
(Spain), 8 Jun 2020 - 12 Jun 2020},
subtyp = {Plenary/Keynote},
cin = {IKP-2},
cid = {I:(DE-Juel1)IKP-2-20111104},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612) / srEDM -
Search for electric dipole moments using storage rings
(694340)},
pid = {G:(DE-HGF)POF4-612 / G:(EU-Grant)694340},
experiment = {EXP:(DE-Juel1)JEDI-20170712},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/908219},
}