Original scientific paper

Weak meson vertices and the hypernuclear potential

Cesar Barbero ; Departamento de Física, Facultad de Ciencias, Universidad Nacional de La Plata, C. C. 67, 1900 La Plata, Argentina
Dubravko Horvat ; Department of Physics, Faculty of Electrical Engineering, University of Zagreb, HR-10000 Zagreb, Croatia
Franjo Krmpotić ; Departamento de Física, Facultad de Ciencias, Universidad Nacional de La Plata, C. C. 67, 1900 La Plata, Argentina
Zoran Narančić ; Department of Physics, Faculty of Electrical Engineering, University of Zagreb, HR-10000 Zagreb, Croatia
Dubravko Tadić ; Physics Department, University of Zagreb, HR-10000 Zagreb, Croatia

Abstract

This paper is a continuation of an earlier paper on hypernuclear potentials. A novel derivation of the hypernuclear strangeness-violating potential due to the pseudoscalar meson exchanges is presented. Comparison with the earlier method shows that the theoretical uncertainty is less than 30%. Relative signs of pseudoscalar meson exchanges and vector (axial vector) exchanges are discussed in detail. Additional comments on the nonrelativistic approximation are included.

Keywords

hypernuclear potentials; strangeness-violating potential; pseudoscalar meson exchange; vector (axial vector) exchange; nonrelativistic approximation

Hrčak ID:

304060

URI

https://hrcak.srce.hr/304060

Publication date:

1.10.2001.

Article data in other languages: croatian

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