Excitation function of K+ and pi(+) production in Au plus Au reactions at 2-10 AGeV

Citation
L. Ahle et al., Excitation function of K+ and pi(+) production in Au plus Au reactions at 2-10 AGeV, PHYS LETT B, 476(1-2), 2000, pp. 1-8
Citations number
24
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
476
Issue
1-2
Year of publication
2000
Pages
1 - 8
Database
ISI
SICI code
0370-2693(20000309)476:1-2<1:EFOKAP>2.0.ZU;2-N
Abstract
Positive pion and kaon production from Au + An reactions have been measured as a function of beam energy over the range 2.0-10.7 AGeV. Both the kaon a nd the pion production cross-sections at mid-rapidity are observed to incre ase steadily with beam kinetic energy. The ratio of K+ to pi(+) mid-rapidit y yields increases from 0.0271 +/- 0.0015 +/- 0.0014 at 2.0 AGeV to 0.202 /- 0.005 +/- 0.010 at 10.7 AGeV and is larger than the K+/pi(+) ratio From p + p reactions over the same beam energy region. There is no indication of a strong onset of any neu production mechanism in heavy-ion reactions in t his energy range beyond rescattering of hadrons. (C) 2000 Published by Else vier Science B.V. All rights reserved.