Dresden 2013 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 28: Fundamentale Symmetrien

HK 28.7: Vortrag

Dienstag, 5. März 2013, 16:00–16:15, HSZ-103

Test of Time-Reversal Invariance at COSY (TRIC) — Dieter Eversheim¹, •Yury Valdau², and Bernd Lorentz² — ¹Helmholtz Institut für Strahlen- und Kernphysik, University Bonn, Germany — ²Institut für Kernphysik, Forschungszentrum Jülich, Germany

At the Cooler Synchrotron COSY a novel (P-even, T-odd) null test of time-reversal invariance to an accuracy of 10⁻⁶ is planned as an internal target transmission experiment. The parity conserving time-reversal violating observable is the total cross-section asymmetry A_y,xz. This quantity is measured using a polarized proton beam with an energy of 135 MeV and an internal tensor polarized deuteron target from the PAX atomic beam source. The reaction rate will be determined by the lifetime of the beam. Thus, in this experiment the cooler synchroton ring serves as an ideal forward spectrometer, as a detector, and an accelerator. First steps of the experimental set-up are discussed.