Recent results on meson production from SAPHIR

Citation
F. Klein et al., Recent results on meson production from SAPHIR, ACT PHY P B, 29(11), 1998, pp. 3321-3329
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA B
ISSN journal
0587-4254 → ACNP
Volume
29
Issue
11
Year of publication
1998
Pages
3321 - 3329
Database
ISI
SICI code
0587-4254(199811)29:11<3321:RROMPF>2.0.ZU;2-M
Abstract
The SAPHIR detector is a magnetic spectrometer for multiparticle final stat es attached to the 3.5 GeV electron accelerator ELSA. The experiments focus on the photoproduction of associated strangeness in gamma p --> K(+)Lambda , K(+)Sigma(0) and K(0)Sigma(+) final states and the production of the ligh test vector mesons rho, omega and phi. In the K(+)Lambda cross section a st eep threshold behaviour is observed which is different in the case of K(+)S igma(0) which is reflected in the differential cross section. Contrary, Lam bda and Sigma polarizations show little variation with energy. A bump in th e t-distribution for omega-production for E gamma similar or equal to 1.5 G eV could be an indication for a resonance while the production of phi-meson s appears fully diffractive down to energies below 2 GeV.