| Issue |
EPL
Volume 81, Number 4, February 2008
|
|
|---|---|---|
| Article Number | 42002 | |
| Number of page(s) | 6 | |
| Section | Nuclear Physics | |
| DOI | https://doi.org/10.1209/0295-5075/81/42002 | |
| Published online | 24 January 2008 | |
-mesic nuclei in relativistic
mean-field theory
1
Department of Physics, Nankai University - Tianjin 300071, China
2
Institute of High Energy Physics, Chinese Academy of Sciences - Beijing 100039, China
Received:
13
August
2007
Accepted:
21
December
2007
With the 
-nucleon (
) interaction Lagrangian
deduced from chiral perturbation theory, we study the possible -mesic nuclei in the framework of relativistic mean-field theory. The
single-particle energies are sensitive to the
scattering length, and increase monotonically with the nucleon number A. If the scattering length is in the range of
= 0.75 - 1.05 fm and the imaginary potential
V0 ~ 15 MeV, some discrete states of 
,
and 
should be identified in
experiments. However, when the scattering length < 0.5 fm, or the imaginary potential 
MeV, no discrete -meson bound states could be observed in
experiments.
PACS: 21.10.Pc – Single-particle levels and strength functions / 21.30.Fe – Forces in hadronic systems and effective interactions
© EPLA, 2008
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