Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9851187 | Nuclear Physics A | 2005 | 5 Pages |
Abstract
The in-medium modifications on the Kâ/K+ ratio produced at GSI are studied. Particular attention is paid to the properties of antikaons, which determine the chemical potential and temperature at freeze-out conditions. Different approaches have been considered: non-interacting Kâ, on-shell self-energy and single-particle spectral density. We observe that the full off-shell approach to the spectral density reproduces the Brown et al. “broad-band equilibration” which is crucial to explain an enhanced Kâ/K+ ratio.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
L. Tolós, A. Polls, A. Ramos, J. Schaffner-Bielich,