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Title: Lamda N -> NN weak interaction in effective-field theory
Author: Parreño García, Assumpta
Bennhold, Cornelius
Holstein, B. R.
Keywords: Reaccions nuclears
Estructura nuclear
Interaccions febles (Física nuclear)
Nuclear reactions
Nuclear structure
Weak interactions (Nuclear physics)
Issue Date: 2004
Publisher: The American Physical Society
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.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review C, 2004, vol. 70, núm 5, p. 051601-1(R)-051601-5(R)
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ISSN: 0556-2813
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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