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dc.contributor.authorNEMO-3 Collaboration
dc.date.accessioned2016-11-11T12:13:41Z
dc.date.available2016-11-11T12:13:41Z
dc.date.issued2016
dc.identifier.citationNEMO-3 Collaboration. (2016). Measurement of the 2νββ decay half-life of 150Nd and a search for 0νββ decay processes with the full exposure from the NEMO-3 detector. <i>Physical Review D</i>, <i>94</i>(7), Article 072003. <a href="https://doi.org/10.1103/PhysRevD.94.072003" target="_blank">https://doi.org/10.1103/PhysRevD.94.072003</a>
dc.identifier.otherCONVID_26295133
dc.identifier.otherTUTKAID_71615
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/51868
dc.description.abstractWe present results from a search for neutrinoless double-β (0νββ) decay using 36.6 g of the isotope 150Nd with data corresponding to a live time of 5.25 y recorded with the NEMO-3 detector. We construct a complete background model for this isotope, including a measurement of the two-neutrino double-β decay half-life of T2ν 1=2 ¼ ½9.34 0.22ðstatÞ þ0.62 −0.60 ðsystÞ × 1018 y for the ground state transition, which represents the most precise result to date for this isotope. We perform a multivariate analysis to search for 0νββ decays in order to improve the sensitivity and, in the case of observation, disentangle the possible underlying decay mechanisms. As no evidence for 0νββ decay is observed, we derive lower limits on half-lives for several mechanisms involving physics beyond the standard model. The observed lower limit, assuming light Majorana neutrino exchange mediates the decay, is T0ν 1=2 > 2.0 × 1022 y at the 90% C.L., corresponding to an upper limit on the effective neutrino mass of hmνi < 1.6–5.3 eV.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review D
dc.subject.otherdouble-beta decay
dc.subject.otherneutrinoless double-beta decay
dc.titleMeasurement of the 2νββ decay half-life of 150Nd and a search for 0νββ decay processes with the full exposure from the NEMO-3 detector
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201611024551
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2016-11-02T10:15:10Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn1550-7998
dc.relation.numberinseries7
dc.relation.volume94
dc.type.versionpublishedVersion
dc.rights.copyright© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.subject.ysoneodyymi
jyx.subject.urihttp://www.yso.fi/onto/yso/p38612
dc.relation.doi10.1103/PhysRevD.94.072003


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