Título:
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Lamda N -> NN weak interaction in effective-field theory
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Autor/a:
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Parreño García, Assumpta; Bennhold, Cornelius; Holstein, B. R.
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Otros autores:
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Universitat de Barcelona |
Abstract:
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The nonleptonic weak
∣
Δ
S
∣
=
1
Λ
N
interaction, responsible for the dominant nonmesonic decay of all but the lightest hypernuclei, is studied in the framework of an effective-field theory. The long-range physics is described through tree-level exchange of the SU(3) Goldstone bosons, while the short-range potential is parametrized in terms of the lowest-order contact terms. We obtain reasonable fits to available weak hypernuclear decay rates and quote the values for the parity-violating asymmetry as predicted by the present effective-field theory. |
Materia(s):
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-Reaccions nuclears -Estructura nuclear -Interaccions febles (Física nuclear) -Nuclear reactions -Nuclear structure -Weak interactions (Nuclear physics) |
Derechos:
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(c) The American Physical Society, 2004
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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The American Physical Society
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Compartir:
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