TITLE

Scalar-meson production in nucleon-nucleon collisions near threshold

AUTHOR(S)
Rekalo, M. P.; Tomasi-Gustafsson, E.
PUB. DATE
December 2003
SOURCE
European Physical Journal A -- Hadrons & Nuclei;Dec2003, Vol. 18 Issue 4, p697
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We establish the model-independent spin structure of the matrix elements for the near-threshold scalar-meson production in pp and np collisions, when the final particles are emitted in S-state. Polarization phenomena are derived in a general form. The properties of the t-channel dynamics, which is based on different meson exchanges, are studied in terms of the s-channel parametrization of the matrix element. The predictions of a model, based on π + σ exchanges are also presented.
ACCESSION #
16708458

 

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