Open and Hidden Strangeness Production in Nucleon-Nucleon Collisions

Details Open and Hidden Strangeness Production in Nucleon-Nucleon Collisions Open and Hidden Strangeness Production in Nucleon-Nucleon Collisions

2008-07-21

arxiv.org/abs/0807.3244v2

Int.J.Mod.Phys.E18:1359-1370,2009

Physics

Nuclear Physics

Nuclear Theory

12 pages, 8 figures, Lecture presented at the 4th DAE-BRNS workshop on Hadron Physics, Aligarh Muslim University, India, Feb.

Scientific paper

10.1142/S0218301309013579

We present an overview of the description of K and eta meson productions in nucleon-nucleon collisions within an effective Lagrangian model where meson production proceeds via excitation, propagation and subsequent decay of intermediate baryonic resonant states. The $K$ meson contains a strange quark ($s$) or antiquark ($\bar s$) while the $\eta$ meson has hidden strangeness as it contains some component of the $s{\bar s}$ pair. Strange meson production is expected to provide information on the manifestation of quantum chromodynamics in the non-perturbative regime of energies larger than that of the low energy pion physics. We discuss specific examples where proper understanding of the experimental data for these reactions is still lacking.

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