1998/10/02 by TRI collaboration, TRI Collaboration, J. Bisplinghoff +20
Chemistry · Engineering · Physics and Astronomy · #Advanced NMR Techniques and Applications #Crystallography and Radiation Phenomena #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Particle Accelerators and Free-Electron Lasers #nucl-ex #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-ex/9810003
6 pages, 3 figures, contribution to the fifth international WEIN symposium: a conference on physics beyond the standard model
arxiv created 1998/10/02 · openalex publication_date 1998/10/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A novel test of time-reversal invariance in proton-deuteron scattering is planned as an internal target transmission experiment at the cooler synchrotron COSY. The P-even, T-odd observable is the polarization correlation Ay,xz of the total cross section measured using a polarized internal proton beam (polarization py) and an internal polarized deuterium target (tensor polarization pxz). Measuring this observable is a true null test of time reversal invariance and therefore allows to reach a high accuracy. Sufficient luminosity can be obtained using a window-less storage cell placed on the axis of the proton beam. Tensor polarized atoms are produced in an atomic beam source based on Stern-Gerlach separation in permanent sextupole magnets and adiabatic high frequency transitions. The total cross section correlation is measured by monitoring the beam transmission in the COSY storage ring mode of operation. The proton beam momentum will be in the range 2-3 GeV/c. This momentum is ideally suited to test possible short range contributions, i.e. natural parity charged ρ-type and unnatural parity a1-type meson exchange contributions. The feasibility of the experiment, systematic errors and the expected accuracy are discussed.