78 citations · 335 across the 26 of their papers we have counts for
26 papers
First Experimental Limit on the Permanent Electric Dipole Moment of the Deuteron
A. Andres, V. Hejny, A. Nass +68
Permanent electric dipole moments (EDMs) provide a sensitive probe of physics beyond the Standard Model and are directly linked to additional sources of CP violation that could exp…
Maintaining a Resonance Condition of an RF Spin Rotator Through a Feedback Loop in a Storage Ring
V. Hejny, A. Andres, J. Pretz +63
This paper presents the successful application of a phase-lock feedback system to maintain the resonance condition of a radio frequency (rf) spin rotator (specifically, an rf Wien…
Pilot bunch and co-magnetometry of polarized particles stored in a ring
J. Slim, F. Rathmann, A. Andres +60
In polarization experiments at storage rings, one of the challenges is to maintain the spin-resonance condition of a radio-frequency spin rotator with the spin-precessions of the o…
Spin decoherence and off-resonance behavior of radiofrequency-driven spin rotations in storage rings
N. N. Nikolaev, F. Rathmann, J. Slim +60
Radiofrequency-driven resonant spin rotators are routinely used as standard instruments in polarization experiments in particle and nuclear physics. Maintaining the continuous exac…
First detection of collective oscillations of a stored deuteron beam with an amplitude close to the quantum limit
J. Slim, N. N. Nikolaev, F. Rathmann +41
We investigated coherent betatron oscillations of a deuteron beam in the storage ring COSY, excited by a detuned radio-frequency Wien filter. The beam oscillations were detected by…
A New Beam Polarimeter at COSY to Search for Electric Dipole Moments of Charged Particles
F. Müller, O. Javakhishvili, D. Shergelashvili +53
A calorimetric polarimeter based on inorganic LYSO scintillators is described. It has been designed for use in a storage ring to search for electric dipole moments (EDM) of charged…
Beam-based alignment at the Cooler Synchrotron COSY as a prerequisite for an electric dipole moment measurement
T. Wagner, A. Nass, J. Pretz +47
The Jülich Electric Dipole moment Investigation (JEDI) collaboration aims at a direct measurement of the Electric Dipole Moment (EDM) of protons and deuterons using a storage ring.…
Measurement of deuteron carbon vector analyzing powers in the kinetic energy range 170-380 MeV
JEDI Collaboration, F. Müller, M. Zurek +58
A measurement of vector analyzing powers in elastic deuteron-carbon scattering has been performed at the Cooler Synchrotron COSY of Forschungszentrum Jülich, Germany. Seven kinetic…
Storage Ring to Search for Electric Dipole Moments of Charged Particles -- Feasibility Study
F. Abusaif, A. Aggarwal, A. Aksentev +98
The proposed method exploits charged particles confined as a storage ring beam (proton, deuteron, possibly He) to search for an intrinsic electric dipole moment (EDM) aligned a…
Feasibility Study for an EDM Storage Ring
F. Abusaif, A. Aggarwal, A. Aksentev +92
This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly He) to search for an intrinsic electric dipole moment (EDM, ) aligne…
Measurement of the analyzing powers in pd elastic and pn quasi-elastic scattering at small angles
S. Barsov, Z. Bagdasarian, S. Dymov +30
The analyzing powers in proton-deuteron elastic and proton-neutron quasi-elastic scattering have been measured at small angles using a polarized proton beam at the COSY storage rin…
Deuteron analysing powers in deuteron-proton elastic scattering at 1.2 and 2.27 GeV
D. Mchedlishvili, Z. Bagdasarian, S. Barsov +31
The vector and tensor analysing powers in deuteron-proton elastic scattering have been measured in the forward hemisphere at deuteron kinetic energies of 1.2 GeV and 2.27 GeV using…
Phase Measurement for Driven Spin Oscillations in a Storage Ring
N. Hempelmann, V. Hejny, J. Pretz +65
This paper reports the first simultaneous measurement of the horizontal and vertical components of the polarization vector in a storage ring under the influence of a radio frequenc…
Spin tune mapping as a novel tool to probe the spin dynamics in storage rings
A. Saleev, N. N. Nikolaev, F. Rathmann +61
Precision experiments, such as the search for electric dipole moments of charged particles using storage rings, demand for an understanding of the spin dynamics with unprecedented…
Phase locking the spin precession in a storage ring
N. Hempelmann, V. Hejny, J. Pretz +66
This letter reports the successful use of feedback from a spin polarization measurement to the revolution frequency of a 0.97 GeV/ bunched and polarized deuteron beam in the Coo…
Coherent pion production in proton-deuteron collisions
S. Dymov, V. Shmakova, D. Mchedlishvili +36
Values of the proton analysing power in the reactions at 350-360~MeV per nucleon were obtained by using a polarised proton beam in…
New method for a continuous determination of the spin tune in storage rings and implications for precision experiments
D. Eversmann, V. Hejny, F. Hinder +98
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune - defined as the number of spin precessions per turn - is given by…
Analysing powers and spin correlations in deuteron-proton charge exchange at 726 MeV
S. Dymov, T. Azaryan, Z. Bagdasarian +36
The charge exchange of vector polarised deuterons on a polarised hydrogen target has been studied in a high statistics experiment at the COSY-ANKE facility at a deuteron beam energ…
Measurement of the analysing power in proton-proton elastic scattering at small angles
Z. Bagdasarian, D. Chiladze, S. Dymov +36
The proton analysing power in elastic scattering has been measured at small angles at COSY-ANKE at 796 MeV and five other beam energies between 1.6 and 2.4 GeV using a p…
Study of the charge-exchange reaction using a polarised deuterium target
B. Gou, D. Mchedlishvili, Z. Bagdasarian +38
The vector and tensor analysing powers, and , of the charge-exchange reaction have been measured at a beam energy of 600 MeV at the COSY-AN…
First measurements of spin correlations in the np -> d pi^0 reaction
V. Shmakova, D. Mchedlishvili, S. Dymov +32
The transverse spin correlations Axx and Ayy in the np-> d pi^0 reaction have been measured for the first time in quasi-free kinematics at the COSY-ANKE facility using a polarised…
Excitation of the Delta(1232) isobar in deuteron charge exchange on hydrogen at 1.6, 1.8, and 2.3 GeV
D. Mchedlishvili, S. Barsov, J. Carbonell +42
The charge-exchange break-up of polarised deuterons pol{d}p -> {pp}n, where the final {pp} diproton system has a very low excitation energy and hence is mainly in the 1S0 state, is…
Measurement of spin observables in the quasi-free np-> {pp}_s pi- reaction at 353 MeV
S. Dymov, V. Shmakova, T. Azaryan +54
The transverse spin correlations A_{x,x} and A_{y,y} have been measured in the pol{d} pol{p} -> p_spec {pp}_s pi- reaction at COSY-ANKE at 353 MeV per nucleon. Here {pp}_s denotes…
The neutron-proton charge-exchange amplitudes measured in the dp -> ppn reaction
D. Mchedlishvili, S. Barsov, J. Carbonell +41
The unpolarised differential cross section and the two deuteron tensor analysing powers A_{xx} and A_{yy} of the pol{d}p -> (pp)n charge-exchange reaction have been measured with t…