Are there any narrow K−-nuclear states?
We performed self-consistent calculations of K−-nuclear quasi-bound states using a single-nucleon K− optical potential derived from chiral meson–baryon coupled-channel interaction models, supplemented by a phenomenological K− multinucleon potential introduced recently to achieve good fits to kaonic...
Gespeichert in:
Veröffentlicht in: | Physics letters. B 2017-07, Vol.770 (C), p.342-347 |
---|---|
Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | We performed self-consistent calculations of K−-nuclear quasi-bound states using a single-nucleon K− optical potential derived from chiral meson–baryon coupled-channel interaction models, supplemented by a phenomenological K− multinucleon potential introduced recently to achieve good fits to kaonic atom data [1]. Our calculations show that the effect of K− multinucleon interactions on K− widths in nuclei is decisive. The resulting widths are considerably larger than corresponding binding energies. Moreover, when the density dependence of the K−-multinucleon interactions derived in the fits of kaonic atoms is extended to the nuclear interior, the only two models acceptable after imposing as additional constraint the single-nucleon fraction of K− absorption at rest do not yield any kaonic nuclear bound state in majority of considered nuclei. |
---|---|
ISSN: | 0370-2693 1873-2445 |
DOI: | 10.1016/j.physletb.2017.04.052 |