Direct comparison of phase-space distribution of K- and K+ mesons in heavy-ion collisions at SIS energies - evidence for in-medium modifications of kaons?

Citation
K. Wisniewski et al., Direct comparison of phase-space distribution of K- and K+ mesons in heavy-ion collisions at SIS energies - evidence for in-medium modifications of kaons?, EUR PHY J A, 9(4), 2000, pp. 515-519
Citations number
31
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL A
ISSN journal
1434-6001 → ACNP
Volume
9
Issue
4
Year of publication
2000
Pages
515 - 519
Database
ISI
SICI code
1434-6001(200012)9:4<515:DCOPDO>2.0.ZU;2-R
Abstract
The ratio of K- to K+-meson yields has been measured in the systems Ru-96 Ru-96 at 1.69 A GeV, Ru-96 + Zr-96 at 1.69 A GeV, and Ni-58 + Ni-58 at 1.9 3 A GeV incident beam kinetic energy. The yield ratio is observed to vary a cross the measured phase space. Relativistic transport-model calculations i ndicate that the data are best understood if in-medium modifications of the kaons are taken into account.