s-wave approximation for asymmetry in nonmesonic decay of finite hypernuclei

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dc.contributor.authorBarbero, Cesar
dc.contributor.authorGaleao, Alfredo P.
dc.contributor.authorKrmpotic, Francisco
dc.contributor.institutionNatl Univ La Plata
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionConsejo Nacl Invest Cient & Tecn
dc.date.accessioned2014-05-20T14:06:05Z
dc.date.available2014-05-20T14:06:05Z
dc.date.issued2007-11-01
dc.description.abstractWe establish the bridge between the commonly used Nabetani-Ogaito-Sato-Kishimoto (NOSK) formula for the asymmetry parameter a(Lambda) in the Lambda p -> np emission of polarized hypernuclei, and the shell-model (SM) formalism for finite hypernuclei. We demonstrate that the s-wave approximation leads to a SM formula for a(Lambda) that is as simple as the NOSK one and that reproduces the exact results for (5)(Lambda)He and (12)(Lambda)C better than initially expected. The simplicity achieved here is indeed remarkable. The new formalism makes the theoretical evaluation of a(Lambda) more transparent and explains clearly why the one-meson exchange model is unable to account for the experimental data of (5)(Lambda)He.en
dc.description.affiliationNatl Univ La Plata, Fac Ciências Exactas, Dept Fis, RA-1900 La Plata, Argentina
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405 São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Inst Fis, Dept Fis Mat, BR-05315 São Paulo, Brazil
dc.description.affiliationConsejo Nacl Invest Cient & Tecn, Inst Fis La Plata, RA-1900 La Plata, Argentina
dc.description.affiliationNatl Univ La Plata, Fac Ciencies Astron & Geofis, RA-1900 La Plata, Argentina
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405 São Paulo, Brazil
dc.format.extent8
dc.identifierhttp://dx.doi.org/10.1103/PhysRevC.76.054321
dc.identifier.citationPhysical Review C. College Pk: Amer Physical Soc, v. 76, n. 5, 8 p., 2007.
dc.identifier.doi10.1103/PhysRevC.76.054321
dc.identifier.fileWOS000251327000038.pdf
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/11449/23188
dc.identifier.wosWOS:000251327000038
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review C
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titles-wave approximation for asymmetry in nonmesonic decay of finite hypernucleien
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmer Physical Soc
unesp.author.lattes3161960405091076[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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