Density-dependent K− nuclear optical potentials from kaonic atoms
1994; Elsevier BV; Volume: 579; Issue: 3-4 Linguagem: Inglês
10.1016/0375-9474(94)90921-0
ISSN1873-1554
AutoresE. Friedman, A. Gal, C.J. Batty,
Tópico(s)Atomic and Molecular Physics
ResumoThe density depedence of the K− optical potential Vopt(r) at zero kinetic energy is studied by fitting it to a comprehensive set of atomic data across the periodic table. Two families of solutions offering improved fits over that for a teffϱ(r) parameterization are identified, one containing solutions for Vopt with r.m.s. radii larger than those of the matter density ϱ, as expected from finite-range folding corrections. The other gives rise to Re Vopt of a size smaller than that of ϱ. The latter family offers substantially improved fits to the data, with particularly strong attraction inside the nucleus (200 ± 20 MeV). For a subfamily of solutions, Vopt becomes repulsive at large distances, and solutions satisfying the low-density limit Vopt → tKNϱ can be found. Comments are made on the relevance of Λ(1405) nuclear dynamics to these findings.
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