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

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RECERCAT Home > Universitat de Barcelona > Física Quàntica i Astrofísica > Articles publicats en revistes (Física Quàntica i Astrofísica) > View document

To access the full text documents, please follow this link: http://hdl.handle.net/2445/11010

dc.contributor	Universitat de Barcelona
dc.contributor.author	Parreño García, Assumpta
dc.contributor.author	Bennhold, Cornelius
dc.contributor.author	Holstein, B. R.
dc.date	2010-01-29T10:19:49Z
dc.date	2010-01-29T10:19:49Z
dc.date	2004
dc.identifier.citation	0556-2813
dc.identifier.citation	522264
dc.identifier.uri	http://hdl.handle.net/2445/11010
dc.format	5 p.
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	The American Physical Society
dc.relation	Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.70.051601
dc.relation	Physical Review C, 2004, vol. 70, núm 5, p. 051601-1(R)-051601-5(R)
dc.relation	http://dx.doi.org/10.1103/PhysRevC.70.051601
dc.rights	(c) The American Physical Society, 2004
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Reaccions nuclears
dc.subject	Estructura nuclear
dc.subject	Interaccions febles (Física nuclear)
dc.subject	Nuclear reactions
dc.subject	Nuclear structure
dc.subject	Weak interactions (Nuclear physics)
dc.title	Lamda N -> NN weak interaction in effective-field theory
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.description.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.

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