Neutrinoless double-electron capture
Blaum, K., Eliseev, S., Danevich, F. A., Tretyak, V. I., Kovalenko, S., Krivoruchenko, M. I., Novikov, Yu. N., & Suhonen, J. (2020). Neutrinoless double-electron capture. Reviews of Modern Physics, 92(4), Article 045007. https://doi.org/10.1103/RevModPhys.92.045007
Published in
Reviews of Modern PhysicsAuthors
Date
2020Copyright
© 2020 American Physical Society
Double-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.
...
![showless](/themes/JYX2//images/showless.png)
![showmore](/themes/JYX2//images/showmore.png)
Publisher
American Physical Society (APS)ISSN Search the Publication Forum
0034-6861Keywords
Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/47480176
Metadata
Show full item recordCollections
Related funder(s)
Research Council of FinlandFunding program(s)
Academy Project, AoFAdditional information about funding
We 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.![showless](/themes/JYX2//images/showless.png)
![showmore](/themes/JYX2//images/showmore.png)
License
Related items
Showing items with similar title or keywords.
-
Muon-electron lepton-flavor-violating transitions : Shell-model calculations of transitions in 27Al
Kostensalo, Joel; Suhonen, Jouni; Civitarese, O. (American Physical Society, 2018)In this paper we present the results of large-scale shell-model calculations of muon-to-electron lepton-flavorviolating transitions for the case of the target nucleus 27Al. We extend the previous shell-model calculations, done ... -
Analysis of light neutrino exchange and short-range mechanisms in 0νββ decay
Deppisch, Frank F.; Graf, Lukas; Iachello, Francesco; Kotila, Jenni (American Physical Society (APS), 2020)Neutrinoless double beta decay (0νββ) is a crucial test for lepton number violation. Observation of this process would have fundamental implications for neutrino physics, theories beyond the Standard Model and cosmology. ... -
Calculated solar-neutrino capture rate for a radiochemical 205Tl-based solar-neutrino detector
Kostensalo, Joel; Suhonen, Jouni; Zuber, K. (American Physical Society, 2020)Radiochemical experiments for low-energy solar-neutrino detection have been making headlines by exploiting the isotopes 37Cl and 71Ga. Such a very low-threshold measurement of this type can also be performed using 205Tl, ... -
Comparative Analysis of Nuclear Matrix Elements of 0νβ+β+ Decay and Muon Capture in 106Cd
Jokiniemi, Lotta; Suhonen, Jouni; Kotila, Jenni (Frontiers Media SA, 2021)Comparative analyses of the nuclear matrix elements (NMEs) related to the 0νβ+β+ decay of 106Cd to the ground state of 106Pd and the ordinary muon capture (OMC) in 106Cd are performed. This is the first time the OMC NMEs ... -
Nuclear matrix elements for resonant neutrinoless double electron capture
Suhonen, Jouni (Institute of Physics, 2012)The resonant neutrinoless double electron-capture (R0νECEC) is discussed from the point of view of the resonance condition and the involved nuclear matrix elements. A brief outline of the involved theory framework is ...