Antiflow of kaons in relativistic heavy ion collisions - art. no. 061903

Citation
S. Pal et al., Antiflow of kaons in relativistic heavy ion collisions - art. no. 061903, PHYS REV C, 6206(6), 2000, pp. 1903
Citations number
59
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C
ISSN journal
0556-2813 → ACNP
Volume
6206
Issue
6
Year of publication
2000
Database
ISI
SICI code
0556-2813(200012)6206:6<1903:AOKIRH>2.0.ZU;2-Q
Abstract
We compare relativistic transport model calculations to recent data on the sideward flow of neutral strange K-s(0) mesons for Au+Au collisions at 6A G eV. A soft nuclear equation of state is found to describe very well the pos itive proton flow data measured in the same experiment. In the absence of t he kaon potential, the K-0 flow pattern is similar to that of protons. The kaon flow becomes negative if a repulsive kaon potential determined from th e impulse approximation is introduced. However, this potential underestimat es the data which exhibit larger antiflow. An excellent agreement with the data is obtained when a relativistic scalar-vector kaon potential, that has stronger density dependence, is used. We further find that the transverse momentum dependence of directed and elliptic flow is quite sensitive to the kaon potential in dense matter.