Microscopic analysis of K+-nucleus elastic scattering based on K+-nucleon phase shifts

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2005
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  • We investigate K+-nucleus elastic scattering at intermediate energies within a microscopic optical model approach using the current K+-nucleon (KN) phase shifts from the Center for Nuclear Studies of the George Washington University as primary input. The KN phase shifts are used to generate Gel'fand-Levitan-Marchenko real and local inversion potentials. These potentials are supplemented with a short-range, complex separable term in such a way that the corresponding unitary and nonunitary KN S matrices are exactly reproduced. These KN potentials allow us 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 Li6, C12, Si28, and Ca40 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 of the full-folding model, three kinds of simpler tρ calculations are considered and the results are discussed. © 2005 The American Physical Society.
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  • info:eu-repo/semantics/openAccess
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Forschungsinformationssystem der UHH
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