Consistent large-scale shell-model analysis of the two-neutrino ββ and single β branchings in 48Ca and 96Zr
dc.contributor.author | Kostensalo, Joel | |
dc.contributor.author | Suhonen, Jouni | |
dc.date.accessioned | 2020-01-14T13:07:40Z | |
dc.date.available | 2020-01-14T13:07:40Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Kostensalo, J., & Suhonen, J. (2020). Consistent large-scale shell-model analysis of the two-neutrino ββ and single β branchings in 48Ca and 96Zr. <i>Physics Letters B</i>, <i>802</i>, Article 135192. <a href="https://doi.org/10.1016/j.physletb.2019.135192" target="_blank">https://doi.org/10.1016/j.physletb.2019.135192</a> | |
dc.identifier.other | CONVID_33982677 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/67295 | |
dc.description.abstract | Two-neutrino double-beta-decay matrix elements M2ν and single beta-decay branching ratios were calculated for 48Ca and 96Zr in the interacting nuclear shell model using large single-particle valence spaces with well-tested two-body Hamiltonians. For 48Ca the matrix element M2ν=0.0511 is obtained, which is 5.5% smaller than the previously reported value of 0.0539. For 96Zr this work reports the first large-scale shell-model calculation of the nuclear matrix element, yielding a value M2ν=0.0747 with extreme single-state dominance. These matrix elements, combined with the available ββ-decay half-life data, yield effective values of the weak axial coupling which in turn are used to produce in a consistent way the β-decay branching ratios of (7.5±2.8) % for 48Ca and (18.4±0.09) % for 96Zr. These are larger than obtained in previous studies, implying that the detection of the β-decay branches could be possible in dedicated experiments sometime in the (near) future. | en |
dc.format.mimetype | application/pdf | |
dc.language | eng | |
dc.language.iso | eng | |
dc.publisher | Elsevier | |
dc.relation.ispartofseries | Physics Letters B | |
dc.rights | CC BY 4.0 | |
dc.subject.other | double-beta decay | |
dc.subject.other | axial-vector coupling | |
dc.subject.other | 48Ca | |
dc.subject.other | 96Zr | |
dc.subject.other | shell model | |
dc.subject.other | matrix elements | |
dc.title | Consistent large-scale shell-model analysis of the two-neutrino ββ and single β branchings in 48Ca and 96Zr | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-202001141248 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of Physics | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | |
dc.description.reviewstatus | peerReviewed | |
dc.relation.issn | 0370-2693 | |
dc.relation.volume | 802 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © 2019 The Author(s) | |
dc.rights.accesslevel | openAccess | fi |
dc.relation.grantnumber | 318043 | |
dc.subject.yso | ydinfysiikka | |
dc.format.content | fulltext | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p14759 | |
dc.rights.url | https://creativecommons.org/licenses/by/4.0/ | |
dc.relation.doi | 10.1016/j.physletb.2019.135192 | |
dc.relation.funder | Research Council of Finland | en |
dc.relation.funder | Suomen Akatemia | fi |
jyx.fundingprogram | Academy Project, AoF | en |
jyx.fundingprogram | Akatemiahanke, SA | fi |
jyx.fundinginformation | This work has been partially supported by the Academy of Finland under the Academy project no. 318043. J.K. acknowledges the financial support from Jenny and Antti Wihuri Foundation. | |
dc.type.okm | A1 |