Scalar meson production in nucleon-nucleon collisions near threshold

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 prediction of a 'realistic' model, based on $\pi +\sigma$-exchanges are also presented.

16 pages 6 figures

References in corpus (2)

• Close-to-threshold Meson Production in Hadronic Interactions
• Erratum to: "Nuclear Effects on R=σ_L/σ_T in Deep-Inelastic Scattering" Phys.Lett. B475(2000)386