Chiral symmetry and meson exchange approach to hypernuclear decay
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Chiral symmetry and meson exchange approach to hypernuclear decay

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Chiral symmetry and meson exchange approach to hypernuclear decay

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Oset Báguena, Eulogio Perfil; Jido, D.; Palomar Burdeus, Juan Esteban
This document is a artículoDate2001

Este documento está disponible también en : http://hdl.handle.net/10550/47012
We take an approach to the Λ nonmesonic weak decay in nuclei based on the exchange of mesons under the guidelines of chiral Lagrangians. The one pion and one kaon exchange are considered, together with the exchange of two pions, either correlated, leading to an important scalar-isoscalar exchange (σ-like exchange), or uncorrelated (box diagrams). A drastic reduction of the OPE results for the Γn/Γp ratio is obtained and the new results are compatible with all present experiments within errors. The absolute rates obtained for different nuclei are also in fair agreement with experiment.

    Oset Báguena, Eulogio Jido, D. Palomar Burdeus, Juan Esteban 2001 Chiral symmetry and meson exchange approach to hypernuclear decay Nuclear Physics A 691 1-2 146C 155C
http://dx.doi.org/10.1016/S0375-9474(01)01022-3

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