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http://hdl.handle.net/10261/8141
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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | García, A. | - |
dc.contributor.author | Adelberger, E. G. | - |
dc.contributor.author | Ortiz, G. | - |
dc.contributor.author | Swanson, H. E. | - |
dc.contributor.author | Beck, M. | - |
dc.contributor.author | Tengblad, Olof | - |
dc.contributor.author | García Borge, María José | - |
dc.contributor.author | Martel, Ismael | - |
dc.contributor.author | Bichsel, H. | - |
dc.date.accessioned | 2008-11-03T14:19:36Z | - |
dc.date.available | 2008-11-03T14:19:36Z | - |
dc.date.issued | 2000-12 | - |
dc.identifier.citation | Hyperfine Interactions 129(1-4): 237–248 (2000) | - |
dc.identifier.issn | 0304-3843 | - |
dc.identifier.uri | http://hdl.handle.net/10261/8141 | - |
dc.description | 12 pages, 6 figures, 2 tables. | - |
dc.description.abstract | The positron-neutrino correlation in the 0(+) --> 0(+) β-decay of Ar-32 was measured at ISOLDE by analyzing the effect of lepton recoil on the shape of the narrow proton group following the super-allowed decay. Our result is consistent with the standard model prediction; for vanishing Fierz interference we find a = 0.9989 ± 0.0052 ± 0.0039. Our result leads to improved constraints on scalar weak interactions. The positron-neutrino correlation in Ar-33 decay was measured in the same experiment; for vanishing Fierz interference we find a = 0.944 ± 0.002 ± 0.003. The Ar-32 and Ar-33 correlations, in combination with precision measurements of the half-lives, super-allowed branching ratios and beta endpoint energies, will determine the isospin impurities of the super-allowed transitions. These will provide useful tests of isospin-violation corrections used in deducing |V-ud| which currently indicates non-unitarity of the KM matrix. | en_US |
dc.description.sponsorship | This work was supported in part by the USA National Science Foundation and the Warren Foundation (at the University of Notre Dame) and by the Department of Energy (at the University of Washington). | en_US |
dc.format.extent | 229408 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | en_US |
dc.publisher | Springer Nature | - |
dc.rights | closedAccess | en_US |
dc.subject | Leptonic and semi-leptonic decays | en_US |
dc.subject | Leptonic angular correlations | en_US |
dc.subject | Cabbibo angle | - |
dc.subject | Nuclear β-decay | - |
dc.subject | Isospin mixing | - |
dc.title | Positron-neutrino correlations in Ar-32 and Ar-33 decays: Probes of scalar weak currents and nuclear isospin mixing | en_US |
dc.type | artículo | en_US |
dc.identifier.doi | 10.1023/A:1012605731737 | - |
dc.description.peerreviewed | Peer reviewed | en_US |
dc.relation.publisherversion | http://dx.doi.org/10.1023/A:1012605731737 | - |
dc.identifier.e-issn | 1572-9540 | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.cerifentitytype | Publications | - |
item.grantfulltext | none | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | No Fulltext | - |
item.languageiso639-1 | en | - |
item.openairetype | artículo | - |
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