Near threshold production of the pseudoscalar mesons at the COSY-11 facility

Details Near threshold production of the pseudoscalar mesons at the COSY-11 facility Near threshold production of the pseudoscalar mesons at the COSY-11 facility

2007-11-30

arxiv.org/abs/0711.4994v2

Physics

Nuclear Physics

Nuclear Experiment

3 pages, 3 figures, Presented at the Workshop on the physics of excited nucleons (NSTAR 2007), 5-8 September 2007, Bonn, Germa

Scientific paper

We summarise measurements of the COSY-11 collaboration concerning the excitation functions of the near threshold pseudoscalar meson production in the proton-proton interaction. The results are discussed in the context of the meson-nucleon and hyperon-nucleon interactions. We conclude that the $\eta$-proton interaction is significantly stronger than the eta'-proton interaction. Similarly, we found that the hyperon Lambda interacts with the nucleon considerably stronger than the hyperon Sigma, and that the interaction of (K-)-proton is much stronger than this of the (K+)-proton.

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