Abstract
The present status of theoretical investigation of K-bar nuclei are reviewed. Antisymmetrized molecular dynamics (AMD) explains the most observational evidence of K-bar nuclei; deep bound state of K-bar with very strong attractive potential; extremely high densities with a variety of shapes; and strong isospin dependence. But, in an experiment on the search of K-bar nuclei at KEK, M. Iwasaki et al. observed that the pnnk{sup -} (T=1) bounds much deeper than the ppnK{sup -}(T=0). This fact seems contradict the prediction of AMD model heretofore in which the isospin 0 channel is much stronger than the isospin 1. The present review focuses the theoretical interpretation of this reversal and the implication of its consequence on the K-bar nucleus in general. It was indicated that in pnnK{sup -} (T=1), the nucleon system takes an excited state of (0s){sup 2}(0p) rather than (0s){sup 3}, giving a deeper binding energy for ppnK{sup -} (T=0). For the (0s){sup 2}(0p) configuration, the contribution of I=0 K-bar N interaction is much larger than the case for (0s){sup 3} configuration. Additional energy gain is induced by 1-s terms due to higher contraction of K-bar nuclei. The inversion of the binding energy for ppnK{sup -} and pnnK{sup -} may
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Dote, A;
[1]
Akaishi, Y;
[2]
Yamazaki, T
[3]
- High Energy Accelerator Research Organization, Tsukuba, Ibaraki (Japan)
- Nihon Univ., Tokyo (Japan)
- RIKEN, Wako, Saitama (Japan)
Citation Formats
Dote, A, Akaishi, Y, and Yamazaki, T.
K-bar mesonic nuclei. Status of the theoretical progress.
Japan: N. p.,
2005.
Web.
Dote, A, Akaishi, Y, & Yamazaki, T.
K-bar mesonic nuclei. Status of the theoretical progress.
Japan.
Dote, A, Akaishi, Y, and Yamazaki, T.
2005.
"K-bar mesonic nuclei. Status of the theoretical progress."
Japan.
@misc{etde_20620475,
title = {K-bar mesonic nuclei. Status of the theoretical progress}
author = {Dote, A, Akaishi, Y, and Yamazaki, T}
abstractNote = {The present status of theoretical investigation of K-bar nuclei are reviewed. Antisymmetrized molecular dynamics (AMD) explains the most observational evidence of K-bar nuclei; deep bound state of K-bar with very strong attractive potential; extremely high densities with a variety of shapes; and strong isospin dependence. But, in an experiment on the search of K-bar nuclei at KEK, M. Iwasaki et al. observed that the pnnk{sup -} (T=1) bounds much deeper than the ppnK{sup -}(T=0). This fact seems contradict the prediction of AMD model heretofore in which the isospin 0 channel is much stronger than the isospin 1. The present review focuses the theoretical interpretation of this reversal and the implication of its consequence on the K-bar nucleus in general. It was indicated that in pnnK{sup -} (T=1), the nucleon system takes an excited state of (0s){sup 2}(0p) rather than (0s){sup 3}, giving a deeper binding energy for ppnK{sup -} (T=0). For the (0s){sup 2}(0p) configuration, the contribution of I=0 K-bar N interaction is much larger than the case for (0s){sup 3} configuration. Additional energy gain is induced by 1-s terms due to higher contraction of K-bar nuclei. The inversion of the binding energy for ppnK{sup -} and pnnK{sup -} may indicates the importance of NK-bar interaction over NN interactions. (T. Tamura)}
journal = []
issue = {6}
volume = {49}
journal type = {AC}
place = {Japan}
year = {2005}
month = {Mar}
}
title = {K-bar mesonic nuclei. Status of the theoretical progress}
author = {Dote, A, Akaishi, Y, and Yamazaki, T}
abstractNote = {The present status of theoretical investigation of K-bar nuclei are reviewed. Antisymmetrized molecular dynamics (AMD) explains the most observational evidence of K-bar nuclei; deep bound state of K-bar with very strong attractive potential; extremely high densities with a variety of shapes; and strong isospin dependence. But, in an experiment on the search of K-bar nuclei at KEK, M. Iwasaki et al. observed that the pnnk{sup -} (T=1) bounds much deeper than the ppnK{sup -}(T=0). This fact seems contradict the prediction of AMD model heretofore in which the isospin 0 channel is much stronger than the isospin 1. The present review focuses the theoretical interpretation of this reversal and the implication of its consequence on the K-bar nucleus in general. It was indicated that in pnnK{sup -} (T=1), the nucleon system takes an excited state of (0s){sup 2}(0p) rather than (0s){sup 3}, giving a deeper binding energy for ppnK{sup -} (T=0). For the (0s){sup 2}(0p) configuration, the contribution of I=0 K-bar N interaction is much larger than the case for (0s){sup 3} configuration. Additional energy gain is induced by 1-s terms due to higher contraction of K-bar nuclei. The inversion of the binding energy for ppnK{sup -} and pnnK{sup -} may indicates the importance of NK-bar interaction over NN interactions. (T. Tamura)}
journal = []
issue = {6}
volume = {49}
journal type = {AC}
place = {Japan}
year = {2005}
month = {Mar}
}