摘要
The meson production in nucleon-nucleon collisions near threshold has the potential to gain information onhadron properties and also plays an important role in exploring the baryon spectroscopy[1]. In recent years, theexperimental database on the reaction of pp!ppK+K near threshold has been expanded significantly. In additionto the measurements of the total and differential cross sections, below the threshold of the production of the ?meson, performed experimentally with COSY-11 and ANKE detectors at the cooler synchrotron COSY in Germany,invariant mass distributions of various subsystems have been obtained at low energies. Unlike above the thresholdof the production of the ? meson, in the low energy region, we do not need to separate the non-? from the ?contribution, and due to the fact that the data were spread over a wide range of K+K?? invariant masses, it has aspecial advantage to investigate the scalar mesons a0(980)$ and f0(980) which are dynamically generated from theinteractions of K￣ K, ππ, and πη treated as coupled channels in I=0 and I=1, respectively. Both of them couplestrongly to the K￣K channel.
