1998/04/21 by Z. Wang, Z. S. Wang, Amand Faessler +4 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1103/physrevc.57.3284
published as Phys.Rev.C57:3284-3291,1998 · 30 pages RevTex, 5 PS figures, accepted for publication in Phys. Rev. C
arxiv created 1998/04/21 · openalex publication_date 1998/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
This work investigates the collective motion of kaons in heavy ion reactions at SIS energies (about 1--2 GeV/nucleon). A radial collective flow of K+ mesons is predicted to exist in central Au + Au collisions, which manifests in a characteristic ``shoulder-arm'' shape of the transverse mass spectrum of the midrapidity K+ mesons. The K+ radial flow arises from the repulsive K+ mean field in nuclear matter. In spite of a strong reabsorption and rescattering the attractive K^\ensuremath- mean field leads as well to a collective radial flow of K^\ensuremath- mesons. The K^\ensuremath- radial flow, however, is different from that of K+ mesons and can be observed by a characteristic ``concave'' structure of the transverse mass spectrum of the K^\ensuremath- mesons emitted at midrapidity. The kaon radial flows can therefore serve as a novel tool for the investigation of kaon properties in dense nuclear matter.