Hybrid quark-hadron model ofΛnonmesonic decay: Finite nuclei
- 1 February 1986
- journal article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 33 (2) , 608-613
- https://doi.org/10.1103/physrevc.33.608
Abstract
Λ hypernuclear nonmesonic lifetimes are calculated in the framework of the hybrid quark-hadron model, for both infinite nuclear matter and for a finite nucleus CΛ12. For nuclear matter, an approximate solution of the Bethe-Goldstone equation is used for the initial state ΛN cluster wave function. For CΛ12 a shell model wave function is used. An eikonal approximation is used to represent final state interactions. It is shown that with an effective weak quark Hamiltonian explicitly constructed to be consistent with the ΔI=1/2 rule the CΛ12 nonmesonic width is about 1.3 times the free Λ width, which is consistent with a recent experimental measurement.Keywords
This publication has 17 references indexed in Scilit:
- Theory for a hybrid quark-baryon model for the nucleon-nucleon systemPhysical Review C, 1983
- Hybrid quark model ofnonmesonic decay in nucleiPhysical Review C, 1983
- A quark model of two-baryon currentsPhysics Letters B, 1982
- Scattering and reaction dynamics for the+systemPhysical Review C, 1980
- Unified treatment of the parity violating nuclear forceAnnals of Physics, 1980
- Effective Hamiltonian forweak nonleptonic decays in the six-quark modelPhysical Review D, 1979
- Baryon structure in the bag theoryPhysical Review D, 1974
- Rule for Nonleptonic Decays in Asymptotically Free Field TheoriesPhysical Review Letters, 1974
- Strong Initial- and Final-State Interactions in Nonmesonic Hyper-nuclear Decays and in Parity-ViolatingReactionsPhysical Review B, 1967
- Unitary Symmetry and Leptonic DecaysPhysical Review Letters, 1963