Near threshold production of eta, eta ' and charged kaon pairs in proton-proton collisions

Citation
A. Khoukaz et al., Near threshold production of eta, eta ' and charged kaon pairs in proton-proton collisions, NUCL PHYS A, 663, 2000, pp. 565C-568C
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
0375-9474 → ACNP
Volume
663
Year of publication
2000
Pages
565C - 568C
Database
ISI
SICI code
0375-9474(20000131)663:<565C:NTPOEE>2.0.ZU;2-B
Abstract
The near threshold production of eta- and eta'-mesons in proton-proton coll isions has been measured at excess energies up to 6.3 MeV and 25.0 MeV usin g the COSY-11 facility. In this region of excess energy the eta' cross sect ions are much lower compared to pi(0) and eta production. This observation rather excludes a resonant production of the eta'-meson in the threshold re gion, whereas such a mechanism dominates the eta production close to thresh old. Furthermore, close to threshold data on the elementary K+K- production in the proton-proton interaction have been taken at excess energies up to 56.1 MeV.