dorsal/arxiv
View SchemaDescription of intermediate- and short-range NN nuclear force within a covariant effective field theory
| Authors | Amand Faessler, V. I. Kukulin, M. A. Shikhalev |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0505026 |
| URL | https://arxiv.org/abs/nucl-th/0505026 |
| DOI | 10.1016/j.aop.2005.05.008 |
| Journal | Annals Phys. 320 (2005) 71-107 |
Abstract
The present paper is aimed to developing an effective field theory in the GeV region to describe consistently both elastic and inelastic NN-scattering in a fully covariant way. In this development we employ our novel s-channel mechanism of NN-interaction at intermediate and short ranges assuming a formation of the six-quark bag dressed with basic meson fields such as $\pi$, $\sigma$, $\rho$ and $\omega$ in the intermediate state. The peripheral part of the interaction is governed by t-channel one- and two-pion exchanges described fairly well by chiral perturbation theory. The $\sigma$-meson dressing should be especially important for the stabilization of the bag due to a high coupling constant of the $\sigma$-meson with the bag and also a strong interaction between the $\sigma$-field and space symmetric quark core $|s^6[6]>$. This stabilization of the intermediate dressed bag (which shifts the mass of the bag downward to NN threshold) will be crucially important for the description of $\pi$, $2\pi$, $\rho$ and $\omega$-meson production in NN-collisions, and, in particular, for the correct description of $\pi^0$ production near threshold. So that, we expect that the results of the present work will lead to a deeper understanding the short- and intermediate-range nuclear forces and internucleon correlations in nuclei.
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"abstract": "The present paper is aimed to developing an effective field theory in the GeV\nregion to describe consistently both elastic and inelastic NN-scattering in a\nfully covariant way. In this development we employ our novel s-channel\nmechanism of NN-interaction at intermediate and short ranges assuming a\nformation of the six-quark bag dressed with basic meson fields such as $\\pi$,\n$\\sigma$, $\\rho$ and $\\omega$ in the intermediate state. The peripheral part of\nthe interaction is governed by t-channel one- and two-pion exchanges described\nfairly well by chiral perturbation theory. The $\\sigma$-meson dressing should\nbe especially important for the stabilization of the bag due to a high coupling\nconstant of the $\\sigma$-meson with the bag and also a strong interaction\nbetween the $\\sigma$-field and space symmetric quark core $|s^6[6]\u003e$. This\nstabilization of the intermediate dressed bag (which shifts the mass of the bag\ndownward to NN threshold) will be crucially important for the description of\n$\\pi$, $2\\pi$, $\\rho$ and $\\omega$-meson production in NN-collisions, and, in\nparticular, for the correct description of $\\pi^0$ production near threshold.\nSo that, we expect that the results of the present work will lead to a deeper\nunderstanding the short- and intermediate-range nuclear forces and internucleon\ncorrelations in nuclei.",
"arxiv_id": "nucl-th/0505026",
"authors": [
"Amand Faessler",
"V. I. Kukulin",
"M. A. Shikhalev"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/j.aop.2005.05.008",
"journal_ref": "Annals Phys. 320 (2005) 71-107",
"title": "Description of intermediate- and short-range NN nuclear force within a covariant effective field theory",
"url": "https://arxiv.org/abs/nucl-th/0505026"
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