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Polarization of a stored beam by spin-filtering

By W. Augustyniak, L. Barion, S. Barsov, U. Bechstedt, P. Benati, S. Bertelli, V. Carassiti, D. Chiladze, G. Ciullo, M. Contalbrigo, P.F. Dalpiaz, S. Dymov, R. Engels, W. Erwen, M. Fiorini, M. Gaisser, R. Gebel, P. Goslaswski, K. Grigoriev, G. Guidoboni, A. Kacharava, A. Khoukaz, A. Kulikov, H. Kleines, G. Langenberg, A. Lehrach, P. Lenisa, N. Lomidze, B. Lorentz, G. Macharashvili, R. Maier, B. Marianski, S. Martin, D. Mchedlishvili, S. Merzliakov, I.N. Meshkov, H.O. Meyer, M. Mielke, M. Mikirtychiants, S. Mikirtychiants, A. Nass, M. Nekipelov, N. Nikolaev, M. Nioradze, D. Oellers, M. Papenbrock, L. Pappalardo, A. Pesce, A. Polyanskiy, D. Prasuhn, F. Rathmann, J. Sarkadi, A. Smirnov, H. Seyfarth, V. Shmakova, M. Statera, E. Steffens, H.J. Stein, H. Stockhorst, H. Straatman, H. Ströher, M. Tabidze, G. Tagliente, P. Thörngren-Engblom, S. Trusov, A. Trzcinski, Yu. Valdau, A. Vasiliev, K.M. von Würtemberg, Chr. Weidemann, P. Wüstner and P. Zupranski

Abstract

The PAX Collaboration has successfully performed a spin-filtering experiment with protons at the COSY-ring. The measurement allowed the determination of the spin-dependent polarizing cross section, that compares well with the theoretical prediction from the nucleon–nucleon potential. The test confirms that spin-filtering can be adopted as a method to polarize a stored beam and that the present interpretation of the mechanism in terms of the proton–proton interaction is correct. The outcome of the experiment is of utmost importance in view of the possible application of the method to polarize a beam of stored antiprotons

Topics: 29.27.Hj Polarized beams, 29.20.D- Cyclic accelerators and storage rings, Antiprotons
Year: 2012
DOI identifier: 10.1016/j.physletb.2012.10.030
OAI identifier: oai:iris.unife.it:11392/1724698
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