Measurement of dC vector analyzing power and cross sections at COSY for EDM polarimetry

Müller, Fabian

doi:10.22323/1.346.0146

Cited by 1 publication

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the large analyzing power and differential cross section in the forward region, dC elastic scattering constitutes a well-suited polarimeter reaction for deuteron EDM measurements. In order to provide precise input to Monte-Carlo simulations for an optimized beam polarimeter design, the analyzing powers and the differential cross sections were measured at six different deuteron beam kinetic energies in the range of 170 MeV to 380 MeV [32,33]…”

Section: Polarimetry Data Basementioning

confidence: 99%

Electric dipole moment searches using storage rings

Rathmann¹,

Николаев²

2019

Proceedings of 23rd International Spin Physics Symposium — PoS(SPIN2018)

View full text Add to dashboard Cite

The Standard Model (SM) of Particle Physics is not capable to account for the apparent matterantimatter asymmetry of our Universe. Physics beyond the SM is required and is either probed by 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 particles violate both time reversal (T ) and parity (P) invariance, and are via the CPT -theorem also CP-violating. Finding an EDM would be a strong indication for physics beyond the SM, and pushing upper limits further provides crucial tests for any corresponding theoretical model, e.g., SUSY. Up to now, 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 of the EDM on the spin motion in the ring. Direct searches of proton and deuteron EDMs, however, bear the potential to reach sensitivities beyond 10 −29 e cm. Since the Cooler Synchrotron COSY at the Forschungszentrum Jülich provides polarized protons and deuterons up to momenta of 3.7 GeV/c, it constitutes an ideal testing ground and starting point for such an experimental program. Besides the discussion of the achievements of the JEDI collaboration, and the description of an effort to perform a first direct deuteron EDM measurement at COSY, the report highlights in addition future technical developments that will pave the way toward EDM searches in dedicated rings. A recent advancement that grew out of the successful work performed by JEDI is the formation of the CPEDM Collaboration ‡ , which aims at the design of an EDM prototype ring that could be hosted either at CERN or at COSY, will be discussed as well.

show abstract

Section: Polarimetry Data Basementioning

confidence: 99%