On Quasibound N* Nuclei
Abstract
The possibility for the existence of unstable bound states of the S11 nucleon resonance N(1535) and nuclei is investigated. These quasibound states are speculated to be closely related to the existence of the quasibound states of the eta mesons and nuclei. Within a simple model for the N N interaction involving a pion and eta meson exchange, N-nucleus potentials for N*-He and N*-Mg are evaluated and found to be of a Woods-Saxon like form which supports two to three bound states. In case of N*-He, one state bound by only a few keV and another by 4 MeV is found. The results are however quite sensitive to the N N and N N vertex parameters. A rough estimate of the width of these states, based on the mean free path of the exchanged mesons in the nuclei leads to very broad states with 80 and 110 MeV for N*-He and N*-Mg respectively.
Cite
@article{arxiv.1512.01535,
title = {On Quasibound N* Nuclei},
author = {N. G. Kelkar and D. Bedoya Fierro and P. Moskal},
journal= {arXiv preprint arXiv:1512.01535},
year = {2019}
}
Comments
Presented at the Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, Cracow, Poland, June 2015; to be published in Acta Physica Polonica B (2016)