dorsal/arxiv
View SchemaMicroscopic analysis of K^+-nucleus elastic scattering based on K^+N phase shifts
| Authors | H. F. Arellano, H. V. von Geramb |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0504001 |
| URL | https://arxiv.org/abs/nucl-th/0504001 |
| DOI | 10.1103/PhysRevC.72.025203 |
| Journal | Phys.Rev. C72 (2005) 025203 |
Abstract
We investigate $K^{+}$-nucleus elastic scattering at intermediate energies within a microscopic optical model approach. To this effect we use the current $K^{+}$-nucleon {\it (KN)} phase shifts from the Center for Nuclear Studies of the George Washington University as primary input. First, the {\it KN} phase shifts are used to generate Gel'fand-Levitan-Marchenko real and local inversion potentials. Secondly, these potentials are supplemented with a short range complex separable term in such a way that the corresponding unitary and non-unitary {\it KN} $S$ matrices are exactly reproduced. These {\it KN} potentials allow to calculate all needed on- and off-shell contributions of the $t$ matrix,the driving effective interaction in the full-folding $K^{+}$-nucleus optical model potentials reported here. Elastic scattering of positive kaons from $^{6}$Li, $^{12}$C, $^{28}$Si and $^{40}$Ca are studied at beam momenta in the range 400-1000 MeV/{$c$}, leading to a fair description of most differential and total cross section data. To complete the analysis the full-folding model, three kinds of simpler $t\rho$ calculations are considered and results discussed. We conclude that conventional medium effects, in conjunction with a proper representation of the basic {\it KN} interaction are essential for the description of $K^{+}$-nucleus phenomena.
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"abstract": "We investigate $K^{+}$-nucleus elastic scattering at intermediate energies\nwithin a microscopic optical model approach. To this effect we use the current\n$K^{+}$-nucleon {\\it (KN)} phase shifts from the Center for Nuclear Studies of\nthe George Washington University as primary input. First, the {\\it KN} phase\nshifts are used to generate Gel\u0027fand-Levitan-Marchenko real and local inversion\npotentials. Secondly, these potentials are supplemented with a short range\ncomplex separable term in such a way that the corresponding unitary and\nnon-unitary {\\it KN} $S$ matrices are exactly reproduced. These {\\it KN}\npotentials allow to calculate all needed on- and off-shell contributions of the\n$t$ matrix,the driving effective interaction in the full-folding\n$K^{+}$-nucleus optical model potentials reported here. Elastic scattering of\npositive kaons from $^{6}$Li, $^{12}$C, $^{28}$Si and $^{40}$Ca are studied at\nbeam momenta in the range 400-1000 MeV/{$c$}, leading to a fair description of\nmost differential and total cross section data. To complete the analysis the\nfull-folding model, three kinds of simpler $t\\rho$ calculations are considered\nand results discussed. We conclude that conventional medium effects, in\nconjunction with a proper representation of the basic {\\it KN} interaction are\nessential for the description of $K^{+}$-nucleus phenomena.",
"arxiv_id": "nucl-th/0504001",
"authors": [
"H. F. Arellano",
"H. V. von Geramb"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.72.025203",
"journal_ref": "Phys.Rev. C72 (2005) 025203",
"title": "Microscopic analysis of K^+-nucleus elastic scattering based on K^+N phase shifts",
"url": "https://arxiv.org/abs/nucl-th/0504001"
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