dorsal/arxiv
View SchemaOn the momentum-dependence of $K^{-}$-nuclear potentials
| Authors | L. Dang, L. Li, X. H. Zhong, P. Z. Ning |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0701060 |
| URL | https://arxiv.org/abs/nucl-th/0701060 |
| DOI | 10.1103/PhysRevC.75.068201 |
| Journal | Phys.Rev.C75:068201,2007 |
Abstract
The momentum dependent $K^{-}$-nucleus optical potentials are obtained based on the relativistic mean-field theory. By considering the quarks coordinates of $K^-$ meson, we introduced a momentum-dependent "form factor" to modify the coupling vertexes. The parameters in the form factors are determined by fitting the experimental $K^{-}$-nucleus scattering data. It is found that the real part of the optical potentials decrease with increasing $K^-$ momenta, however the imaginary potentials increase at first with increasing momenta up to $P_k=450\sim 550$ MeV and then decrease. By comparing the calculated $K^-$ mean free paths with those from $K^-n$/$K^-p$ scattering data, we suggested that the real potential depth is $V_0\sim 80$ MeV, and the imaginary potential parameter is $W_0\sim 65$ MeV.
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"abstract": "The momentum dependent $K^{-}$-nucleus optical potentials are obtained based\non the relativistic mean-field theory. By considering the quarks coordinates of\n$K^-$ meson, we introduced a momentum-dependent \"form factor\" to modify the\ncoupling vertexes. The parameters in the form factors are determined by fitting\nthe experimental $K^{-}$-nucleus scattering data. It is found that the real\npart of the optical potentials decrease with increasing $K^-$ momenta, however\nthe imaginary potentials increase at first with increasing momenta up to\n$P_k=450\\sim 550$ MeV and then decrease. By comparing the calculated $K^-$ mean\nfree paths with those from $K^-n$/$K^-p$ scattering data, we suggested that the\nreal potential depth is $V_0\\sim 80$ MeV, and the imaginary potential parameter\nis $W_0\\sim 65$ MeV.",
"arxiv_id": "nucl-th/0701060",
"authors": [
"L. Dang",
"L. Li",
"X. H. Zhong",
"P. Z. Ning"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.75.068201",
"journal_ref": "Phys.Rev.C75:068201,2007",
"title": "On the momentum-dependence of $K^{-}$-nuclear potentials",
"url": "https://arxiv.org/abs/nucl-th/0701060"
},
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