K- meson production in the proton-proton reaction at 3.67 GeV/c

Citation
F. Balestra et al., K- meson production in the proton-proton reaction at 3.67 GeV/c, PHYS LETT B, 468(1-2), 1999, pp. 7-12
Citations number
36
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
468
Issue
1-2
Year of publication
1999
Pages
7 - 12
Database
ISI
SICI code
0370-2693(19991125)468:1-2<7:KMPITP>2.0.ZU;2-6
Abstract
The total cross section of the reaction pp --> ppK(+)K(-) has been determin ed for proton-proton reactions with p(beam) = 3.67 GeV/c. This represents t he first cross section measurement of the pp --> ppK(-)K(+) channel near th reshold, and is equivalent to the inclusive pp --> ppK(-)X cross section at this beam momentum. The cross section determined at this beam momentum is about a factor 20 lower than that for inclusive pp --> ppK(+)X meson produc tion at the same CM energy above the corresponding threshold. This large di fference in the K+ and K- meson inclusive production cross sections in prot on-proton reactions is in strong contrast to cross sections measured in sub -threshold heavy ion collisions, which are similar in magnitude at the same energy per nucleon below the respective thresholds. (C) 1999 Published by Elsevier Science B.V. All rights reserved.