Comparison of strangeness production between A+A and p+p reactions from 2 to 160 A GeV - art. no. 031901

Citation
Jc. Dunlop et Ca. Ogilvie, Comparison of strangeness production between A+A and p+p reactions from 2 to 160 A GeV - art. no. 031901, PHYS REV C, 6103(3), 2000, pp. 1901
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C-NUCLEAR PHYSICS
ISSN journal
0556-2813 → ACNP
Volume
6103
Issue
3
Year of publication
2000
Database
ISI
SICI code
0556-2813(200003)6103:3<1901:COSPBA>2.0.ZU;2-K
Abstract
The measured K+/pi(+) ratios from heavy-ion reactions are compared with the K+/pi(+) ratios from p+p reactions over the energy range 2-160 A GeV. The K/pi enhancement in heavy-ion reactions is largest at the lower energies, c onsistent with strangeness production in secondary scattering becoming rela tively more important than initial collisions near the kaon production thre shold. The enhancement decreases steadily from 4 to 160A GeV, suggesting th at the same enhancement mechanism of hadronic rescattering and decay of str ings may be applicable over this full energy range. Based on existing data, the midrapidity K+/pi(+) ratio is predicted to be 0.25+/-0.02 for the fort hcoming Pb+Pb reactions at 40 A GeV/c.