Meson exchange in the weak decay of Lambda hypernuclei and the Gamma(n)/Gamma(p) ratio
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Meson exchange in the weak decay of Lambda hypernuclei and the Gamma(n)/Gamma(p) ratio

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Meson exchange in the weak decay of Lambda hypernuclei and the Gamma(n)/Gamma(p) ratio

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dc.contributor.author Jido, D.
dc.contributor.author Oset Báguena, Eulogio
dc.contributor.author Palomar Burdeus, Juan Esteban
dc.date.accessioned 2015-09-08T10:18:53Z
dc.date.available 2015-09-08T10:18:53Z
dc.date.issued 2001
dc.identifier.uri http://hdl.handle.net/10550/47013
dc.description.abstract We take an approach to the Lambda non-mesonic weak decay in nuclei based on the exchange of mesons. The one pion and one kaon exchange are considered, together with the exchange of two pions, either correlated, leading to an important scalar-isoscalar exchange (sigma-like exchange), or uncorrelated (box diagrams). Extra effects of omega exchange in the scalar-isoscalar channel are also considered. Constraints of chiral dynamics are used to generate these exchanges. A drastic reduction of the OPE results for the Gamma_n/Gamma_p ratio is obtained and the new results are compatible with all present experiments within errors. The absolute rates obtained for different nuclei are also in good agreement with experiment
dc.language.iso eng
dc.relation.ispartof Nuclear Physics A, 2001, vol. 694, num. 3-4, p. 525-555
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Jido, D. Oset Báguena, Eulogio Palomar Burdeus, Juan Esteban 2001 Meson exchange in the weak decay of Lambda hypernuclei and the Gamma(n)/Gamma(p) ratio Nuclear Physics A 694 3-4 525 555
dc.subject Física
dc.title Meson exchange in the weak decay of Lambda hypernuclei and the Gamma(n)/Gamma(p) ratio
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-09-08T10:18:53Z
dc.identifier.doi http://dx.doi.org/10.1016/S0375-9474(01)01085-5
dc.identifier.idgrec 079384

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