Probing the nuclear equation of state by K+ production in heavy-ion collisions

Authors
Fuchs, C Faessler, A Zabrodin, E Zheng, YM
Citation
C. Fuchs et al., Probing the nuclear equation of state by K+ production in heavy-ion collisions, PHYS REV L, 86(10), 2001, pp. 1974-1977
Citations number
31
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
10
Year of publication
2001
Pages
1974 - 1977
Database
ISI
SICI code
0031-9007(20010305)86:10<1974:PTNEOS>2.0.ZU;2-B
Abstract
The dependence of K+ production on the nuclear equation of state is investi gated in heavy-ion collisions. An increase of the excitation function of K multiplicities obtained in heavy (Au + Au) over light (C + C) systems when going far below threshold which has been observed by the KaoS Collaboratio n strongly favors a soft equation of state. This observation holds despite the influence of an in-medium kaon potential predicted by effective chiral models which is necessary to reproduce the experimental K+ yields.