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http://hdl.handle.net/2445/141662
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DC Field | Value | Language |
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dc.contributor.author | Garbarino, G. | - |
dc.contributor.author | Parreño García, Assumpta | - |
dc.contributor.author | Ramos Gómez, Àngels | - |
dc.date.accessioned | 2019-10-03T13:25:37Z | - |
dc.date.available | 2019-10-03T13:25:37Z | - |
dc.date.issued | 2003-09-12 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/141662 | - |
dc.description.abstract | By combining a one-meson-exchange model for the Λ N → n N transition in finite nuclei with an intranuclear cascade code, we have obtained nucleon-nucleon (angular and energy) coincidence distributions from the nonmesonic weak decay of 5 Λ H e and 12 Λ C hypernuclei. Although, due to the elimination of interferences, two-nucleon coincidences are expected to give a cleaner extraction (with respect to single nucleon observables) of the ratio Γ n / Γ p ≡ Γ ( Λ n → n n ) / Γ ( Λ p → n p ) , we show that the effect of the final state interactions is still important even when applying favorable energy and angular cuts. The agreement of our results for the ratio N n n / N n p between the number of n n and n p emitted pairs with preliminary KEK coincidence data allows us to conclude that Γ n / Γ p for 5 Λ H e should be small and close to the value of 0.46 predicted by our meson-exchange model. | - |
dc.format.extent | 4 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.91.112501 | - |
dc.relation.ispartof | Physical Review Letters, 2003, vol. 91, num. 11, p. 112501 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.91.112501 | - |
dc.rights | (c) American Physical Society, 2003 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Mesons (Física nuclear) | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Mesons (Nuclear physics) | - |
dc.subject.other | Experiments | - |
dc.title | Nucleon-Nucleon Coincidence Spectra in the Nonmesonic Weak Decay of Λ Hypernuclei and the Γn/Γp Puzzle | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 528040 | - |
dc.date.updated | 2019-10-03T13:25:38Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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528040.pdf | 95.51 kB | Adobe PDF | View/Open |
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