Menéndez, J. ; Poves, A. ; Caurier, E. ; Nowacki, F. (2024)
Neutrinoless Double Beta Decay The Nuclear Matrix Elements Revisited.
In: Journal of Physics: Conference Series, 2011, 312 (7)
doi: 10.26083/tuprints-00020759
Article, Secondary publication, Publisher's Version
Text
jpconf11_312_072005.pdf Copyright Information: CC BY-NC-SA 3.0 Unported - Creative Commons, Attribution, NonCommercial, ShareAlike. Download (1MB) |
Item Type: | Article |
---|---|
Type of entry: | Secondary publication |
Title: | Neutrinoless Double Beta Decay The Nuclear Matrix Elements Revisited |
Language: | English |
Date: | 23 January 2024 |
Place of Publication: | Darmstadt |
Year of primary publication: | 2011 |
Place of primary publication: | Bristol |
Publisher: | IOP Publishing |
Journal or Publication Title: | Journal of Physics: Conference Series |
Volume of the journal: | 312 |
Issue Number: | 7 |
Collation: | 9 Seiten |
DOI: | 10.26083/tuprints-00020759 |
Corresponding Links: | |
Origin: | Secondary publication DeepGreen |
Abstract: | We explore the influence of the deformation on the nuclear matrix elements of the neutrinoless double beta decay (NME), concluding that the difference in deformation -or more generally in the amount of quadrupole correlations- between parent and grand daughter nuclei quenches strongly the decay. We correlate these differences with the seniority structure of the nuclear wave functions. In this context, we examine the present discrepancies between the NME's obtained in the framework of the Interacting Shell Model and the Quasiparticle RPA. In our view, part of the discrepancy can be due to the limitations of the spherical QRPA in treating nuclei which have strong quadrupole correlations. We surmise that the NME's in a basis of generalized seniority are approximately model independent, i. e. they are "universal". We discuss as well how varies the nuclear matrix element of the ⁷⁶Ge decay when the wave functions of the two nuclei involved in the transition are constrained to reproduce the experimental occupancies. In the Interacting Shell Model description the value of the NME is enhanced about 15% compared to previous calculations, whereas in the QRPA the NME's are reduced by 20%-30%. This diminishes the discrepancies between both approaches. In addition, we update the effects of the short range correlations on the NME's in the light of the recently proposed parametrizations obtained by renormalizing the 0νββ transition operator at the same footing than the effective interaction. |
Status: | Publisher's Version |
URN: | urn:nbn:de:tuda-tuprints-207598 |
Additional Information: | International Nuclear Physics Conference 2010 (INPC2010) |
Classification DDC: | 500 Science and mathematics > 530 Physics |
Divisions: | 05 Department of Physics > Institute of Nuclear Physics |
Date Deposited: | 23 Jan 2024 10:17 |
Last Modified: | 27 Feb 2024 07:22 |
SWORD Depositor: | Deep Green |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/20759 |
PPN: | 515808954 |
Export: |
View Item |