ENHANCEMENT OF K+ PI(+) RATIO IN CENTRAL COLLISIONS BETWEEN HEAVY-NUCLEI/

Authors
Citation
Ym. Zheng et Zl. Chu, ENHANCEMENT OF K+ PI(+) RATIO IN CENTRAL COLLISIONS BETWEEN HEAVY-NUCLEI/, Journal of physics. G, Nuclear and particle physics (Print), 24(10), 1998, pp. 1965-1971
Citations number
42
Categorie Soggetti
Physics, Particles & Fields","Physics, Nuclear
ISSN journal
09543899
Volume
24
Issue
10
Year of publication
1998
Pages
1965 - 1971
Database
ISI
SICI code
0954-3899(1998)24:10<1965:EOKPRI>2.0.ZU;2-4
Abstract
The relativistic Vlasov-Uehling-Uhlenbeck model has been generalized t o identify the isospin degree of freedom of particles and used to simu late the particle production in Au+Au collisions at 1 GeV/nucleon. The calculated results describe very well the experimentally measured fea tures for the momentum spectra of proton, pi(+) and K+ particles, the multiplicities of pi(+) and K+, and the K+/pi(+) ratio as a function o f the number of participating nucleons. The physical origin of the sig nificant rise of The K+/pi(+) ratio when going from peripheral to cent ral collisions is also analysed.