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Spin Filtering at COSY demonstrated

The PAX Collaboration, successfully performing a test with transverse polarization at COSY, confirmed that spin-filtering is a viable method to polarize a stored beam.

Spin Filtering at COSY

The consequent extraction of the spin-dependent part of the proton-proton cross section is in excellent agreement with the theoretical predictions. The use of the same experimental setup at the AD-ring at CERN, would allow to measure for the first time the largely unknown spin-dependent proton-antiproton cross section and to establish the conditions for the design of an antiproton polarizer ring.


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