Conference paper

Publication year: 2000

Pages: 2419-2429

Journal: Acta Physica Polonica B

Volume number: 31

Issue number: 10-11

ISSN: 0587-4254

eISSN: 1509-5770

Conference: 6th International Workshop on Production, Properties and Interaction of Mesons (MESON 2000)

Publisher: Jagiellonian University

Abstract: 
The production of eta, eta', omega, phi, mesons, as well as Lambda and Sigma hyperons has been measured in proton-proton reactions with an incident beam momentum of 3.67 GeV/c with DISTO spectrometer at SATURNE. The first observation of the phi meson near the production threshold and the phi/omega cross sections ratio has been compared to predictions based on the OZI rule and on one-boson-exchange models. Measured inclusive cross section for K- mesons production is about a factor of 20 lower than for inlcusive K+ production at the same CM energy above threshold. This fact is in strong contrast to cross sections observed in sub-threshold heavy ion collisions. The production of eta and eta' masons has also been measured, in an effort to gain information on the eta'-nucleon coupling. The normal spin transfer coefficient (D-N N) has been determined for exclusive hyperon production with a polarized beam. A large negative coefficient has been observed, which is qualitatively consistent with expectations for a mechanism dominated by kaon-exchange and rescattering.

Harvard Citation style: Salabura, P., Balestra, F., Bedfer, Y., Bertini, R., Bland, L., Brochard, F., et al. (2000) Meson and hyperon production results from the DISTO spectrometer at SATURNE, Acta Physica Polonica B, 31(10-11), pp. 2419-2429

APA Citation style: Salabura, P., Balestra, F., Bedfer, Y., Bertini, R., Bland, L., Brochard, F., Bussa, M., Chalyshev, V., Choi, S., Dzemidzic, M., Faivre, J., Falomkin, I., Fava, L., Ferrero, L., Foryciarz, J., Frolov, V., Fröhlich, I., Garfagnini, R., Gill, D., ...Zosi, G. (2000). Meson and hyperon production results from the DISTO spectrometer at SATURNE. Acta Physica Polonica B. 31(10-11), 2419-2429.