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dc.contributor.authorSuhonen, Jouni
dc.date.accessioned2017-12-05T06:30:03Z
dc.date.available2017-12-05T06:30:03Z
dc.date.issued2017
dc.identifier.citationSuhonen, J. (2017). Impact of the quenching of gA on the sensitivity of 0νββ experiments. <i>Physical Review C</i>, <i>96</i>(5), Article 055501. <a href="https://doi.org/10.1103/physrevc.96.055501" target="_blank">https://doi.org/10.1103/physrevc.96.055501</a>
dc.identifier.otherCONVID_27387298
dc.identifier.otherTUTKAID_75883
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/56119
dc.description.abstractDetection of the neutrinoless ββ (0νββ) decay is of high priority in the particle- and neutrino-physics communities. The detectability of this decay mode is strongly influenced by the value of the weak axial-vector coupling constant gA. The recent nuclear-model analyses of β and ββ decays suggest that the value of gA could be dramatically quenched, reaching ratios of gfree A /gA ≈ 4, where gfree A = 1.27 is the free, neutron-decay, value of gA. The effects of this quenching appear devastating for the sensitivity of the present and future 0νββ experiments since the fourth power of this ratio scales the 0νββ half-lives. This, in turn, could lead to some two orders of magnitude less sensitivity for the 0νββ experiments. In the present article it is shown that by using a consistent approach to both the two-neutrino ββ and 0νββ decays by the proton-neutron quasiparticle random-phase approximation, the feared two-orders-of-magnitude reduction in the sensitivity of the 0νββ experiments actually shrinks to a reduction by factors in the range 2–6. This certainly has dramatic consequences for the potential to detect the 0νββ decay.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.subject.otherbeta decay
dc.titleImpact of the quenching of gA on the sensitivity of 0νββ experiments
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201711284405
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-11-28T13:15:20Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn2469-9985
dc.relation.numberinseries5
dc.relation.volume96
dc.type.versionpublishedVersion
dc.rights.copyright© 2017 American Physical Society. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.subject.ysoydinfysiikka
jyx.subject.urihttp://www.yso.fi/onto/yso/p14759
dc.relation.doi10.1103/physrevc.96.055501
dc.type.okmA1


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