Nonmesonic weak decay spectra of He-4(Lambda)

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dc.contributor.authorBauer, E.
dc.contributor.authorGaleao, Alfredo Pio Noronha Rodrigues [UNESP]
dc.contributor.authorHussein, M. S.
dc.contributor.authorKrmpotic, F.
dc.contributor.authorParker, J. D.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniv Nacl La Plata
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionKyoto Univ
dc.contributor.institutionConsejo Nacl Invest Cient & Tecn
dc.contributor.institutionMax Planck Inst Phys Komplexer Syst
dc.date.accessioned2013-09-30T18:55:05Z
dc.date.accessioned2014-05-20T14:10:10Z
dc.date.available2013-09-30T18:55:05Z
dc.date.available2014-05-20T14:10:10Z
dc.date.issued2009-04-13
dc.description.abstractTo comprehend the recent Brookhaven National Laboratory experiment E788 on He-4(Lambda), we have outlined a simple theoretical framework. based on the independent-particle shell model, for the one-nucleon-induced nonmesonic weak decay spectra. Basically, the shapes of all the spectra are tailored by the kinematics of the corresponding phase space, depending very weakly on the dynamics, which is gauged here by the one-meson-exchange potential. In spite of the straightforwardness of the approach a good agreement with data is achieved. This might be an indication that the final-state-interactions and the two-nucleon induced processes are not very important in the decay of this hypernucleus. We have also found that the pi + K exchange potential with soft vertex-form-factor cutoffs (Lambda(pi) approximate to 0.7 GeV, Lambda(K) approximate to 0.9 GeV), is able to account simultaneously for the available experimental data related to Gamma(p) and Gamma(n) for H-4(Lambda), H-4(Lambda), and H-5(Lambda). (C) 2009 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv São Paulo, Inst Fis, Dept Fis Matemat, BR-05315970 São Paulo, Brazil
dc.description.affiliationUniv Nacl La Plata, Dept Fis, Fac Ciencias Exactas, RA-1900 La Plata, Argentina
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.affiliationKyoto Univ, Dept Phys, Kyoto 6068502, Japan
dc.description.affiliationConsejo Nacl Invest Cient & Tecn, Inst Fis La Plata, RA-1900 La Plata, Argentina
dc.description.affiliationMax Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
dc.description.affiliationUniv Nacl La Plata, Fac Ciencias Astron & Geofis, RA-1900 La Plata, Argentina
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
dc.description.sponsorshipIdCONICET: PIP 6159
dc.format.extent103-110
dc.identifierhttp://dx.doi.org/10.1016/j.physletb.2009.01.072
dc.identifier.citationPhysics Letters B. Amsterdam: Elsevier B.V., v. 674, n. 2, p. 103-110, 2009.
dc.identifier.doi10.1016/j.physletb.2009.01.072
dc.identifier.issn0370-2693
dc.identifier.urihttp://hdl.handle.net/11449/24265
dc.identifier.wosWOS:000265343900005
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofPhysics Letters B
dc.relation.ispartofjcr4.254
dc.relation.ispartofsjr2,336
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectNonmesonic decayen
dc.subjectOne-nucleon spectraen
dc.subjectTwo-nucleon spectraen
dc.subjectOne-meson-exchange modelen
dc.subjects-Shell hypernucleien
dc.subjectIndependent-particle shell modelen
dc.titleNonmesonic weak decay spectra of He-4(Lambda)en
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes3161960405091076[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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