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Beschreibung:
The cooler synchrotron COSY-Julich delivers phase-space cooled, polarized proton and deuteron beams with momenta up to p = 3.65 GeV/c. Various experiments on hadron-induced strangeness production on proton, neutron and nuclear targets have been carried out. Here we report recent results on associated strangeness production in pp -> KYN (Y = Lambda, Sigma) reactions, on K+-production in pn collisions, and on K (K) over bar -pair production in pp interactions. We also briefly discuss possible measurements to disentangle the parity of the recently discovered pentaquark state Theta(+), the spin dependence of the YN interaction, as well as planned experiments which aim at the determination of the a(0)-f(0) mixing matrix element, a quantity which is believed to be sensitive to the nature of the light scalar mesons a(0)/f(0)(980). (c) 2005 Published by Elsevier B.V.