Lamda N -> NN weak interaction in effective-field theory

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Título:	Lamda N -> NN weak interaction in effective-field theory
Autor/a:	Parreño García, Assumpta; Bennhold, Cornelius; Holstein, B. R.
Otros autores:	Universitat de Barcelona
Abstract:	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):	-Reaccions nuclears -Estructura nuclear -Interaccions febles (Física nuclear) -Nuclear reactions -Nuclear structure -Weak interactions (Nuclear physics)
Derechos:	(c) The American Physical Society, 2004
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	The American Physical Society
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Golak, J.; Miyagawa, K.; Kamada, H.; Witala, H.; Glöckle, W.; Parreño García, Assumpta; Ramos Gómez, Àngels; Bennhold, Cornelius

Parreño García, Assumpta; Ramos Gómez, Àngels; Bennhold, Cornelius

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