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dc.contributor.authorBlaum, K.
dc.contributor.authorEliseev, S.
dc.contributor.authorDanevich, F. A.
dc.contributor.authorTretyak, V. I.
dc.contributor.authorKovalenko, Sergey
dc.contributor.authorKrivoruchenko, M. I.
dc.contributor.authorNovikov, Yu. N.
dc.contributor.authorSuhonen, J.
dc.date.accessioned2020-12-23T08:41:26Z
dc.date.available2020-12-23T08:41:26Z
dc.date.issued2020
dc.identifier.citationBlaum, K., Eliseev, S., Danevich, F. A., Tretyak, V. I., Kovalenko, S., Krivoruchenko, M. I., Novikov, Yu. N., & Suhonen, J. (2020). Neutrinoless double-electron capture. <i>Reviews of Modern Physics</i>, <i>92</i>(4), Article 045007. <a href="https://doi.org/10.1103/RevModPhys.92.045007" target="_blank">https://doi.org/10.1103/RevModPhys.92.045007</a>
dc.identifier.otherCONVID_47480176
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/73403
dc.description.abstractDouble-beta processes play a key role in the exploration of neutrino and weak interaction properties, and in the searches for effects beyond the standard model. During the last half century many attempts were undertaken to search for double-beta decay with emission of two electrons, especially for its neutrinoless mode 0ν2β−, the latter having still not been observed. Double-electron capture (2EC) was not yet in focus because of its in general lower transition probability. However, the rate of neutrinoless double-electron capture 0ν2EC can experience a resonance enhancement by many orders of magnitude when the initial and final states are energetically degenerate. In the resonant case, the sensitivity of the 0ν2EC process can approach the sensitivity of the 0ν2β− decay in the search for the Majorana mass of neutrinos, right-handed currents, and other new physics. An overview of the main experimental and theoretical results obtained during the last decade in this field is presented. The experimental part outlines search results of 2EC processes and measurements of the decay energies for possible resonant 0ν2EC transitions. An unprecedented precision in the determination of decay energies with Penning traps has allowed one to refine the values of the degeneracy parameter for all previously known near-resonant decays and has reduced the rather large uncertainties in the estimate of the 0ν2EC half-lives. The theoretical part contains an updated analysis of the electron shell effects and an overview of the nuclear-structure models, in which the nuclear matrix elements of the 0ν2EC decays are calculated. One can conclude that the decay probability of 0ν2EC can experience a significant enhancement in several nuclides.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherAmerican Physical Society (APS)
dc.relation.ispartofseriesReviews of Modern Physics
dc.rightsIn Copyright
dc.subject.otherdouble beta decay
dc.subject.otherneutrinoless double beta decay
dc.subject.othernuclear tests of fundamental interactions
dc.titleNeutrinoless double-electron capture
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202012237344
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_dcae04bc
dc.description.reviewstatuspeerReviewed
dc.relation.issn0034-6861
dc.relation.numberinseries4
dc.relation.volume92
dc.type.versionpublishedVersion
dc.rights.copyright© 2020 American Physical Society
dc.rights.accesslevelopenAccessfi
dc.relation.grantnumber318043
dc.subject.ysoydinfysiikka
dc.subject.ysohiukkasfysiikka
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p14759
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
dc.rights.urlhttp://rightsstatements.org/page/InC/1.0/?language=en
dc.relation.doi10.1103/RevModPhys.92.045007
dc.relation.funderResearch Council of Finlanden
dc.relation.funderSuomen Akatemiafi
jyx.fundingprogramAcademy Project, AoFen
jyx.fundingprogramAkatemiahanke, SAfi
jyx.fundinginformationWe appreciate the valuable discussions with M. Block, T. Eronen, Amand Faessler, D. Frekers, V. Shabaev, F. Šimkovic, and I. Tupitsyn on topics related to 2EC physics. This work is supported in part by the Max Planck Society. K. B. and S. E. acknowledge the support of the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 832848- FunI. F. A. D. and V. I. T. were supported in part by National Research Foundation of Ukraine Grant No. 2020.02/0011. S. K. acknowledges the support of ANID Fondecyt (Chile) Grant No. 1190845 and CONICYT (Chile) Project No. PIA/ Basal FB0821. M. I. K. is supported by RFBR Grant No. 18- 02-00733 (Russia) and the Alexander von Humboldt Foundation (Germany). Yu. N. N. is supported by the Extreme Matter Institute EMMI (GSI Darmstadt). J. S. was partly supported by the Academy of Finland under Project No. 318043. F. A. D., M. I. K., Yu. N. N., and V. I. T. acknowledge the kind hospitality of Max-Planck-Institut f ¨ur Kernphysik in Heidelberg, where part of this work was done.
dc.type.okmA2


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