Polarization phenomena for heavy meson production in NN-collisions near threshold
Michail P. Rekalo, Egle Tomasi-Gustafsson
Abstract
Polarization phenomena are essential for the understanding of elementary processes, and are typically large in the threshold region. The selection rules with respect to P-parity, angular momentum, isotopic spin and the Pauli principle allow to parametrize in a model independent way, the spin structure of the matrix elements for the near-threshold heavy meson production in NN-collisions in terms of a small number of partial amplitudes. Such parametrization is very powerful for the analysis of polarization phenomena and possible t-exchange mechanisms.
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