Abstract
I review some recent works on meson production in nucleon-nucleon collisions. In particular, I report on an investigation of the reaction NN → NNπ near threshold where the production amplitude has been evaluated within chiral perturbation theory up to next-to-leading order, using a counting scheme that takes into account the large scale introduced by the initial momentum. With regard to other meson-production reactions I focus on a phenomenological analysis of the Λ/Σ0 production ratio in pp collisions.
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