A1 Journal article (refereed)
Analysis of light neutrino exchange and short-range mechanisms in 0νββ decay (2020)

Deppisch, F. F., Graf, L., Iachello, F., & Kotila, J. (2020). Analysis of light neutrino exchange and short-range mechanisms in 0νββ decay. Physical Review D, 102(9), Article 095016. https://doi.org/10.1103/physrevd.102.095016

JYU authors or editors

Publication details

All authors or editors: Deppisch, Frank F.; Graf, Lukas; Iachello, Francesco; Kotila, Jenni

Journal or series: Physical Review D

ISSN: 2470-0010

eISSN: 2470-0029

Publication year: 2020

Volume: 102

Issue number: 9

Article number: 095016

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/physrevd.102.095016

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/72788

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2009.10119


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. Focusing on so-called short-range operators of 0νββ and their potential interplay with the standard light Majorana neutrino exchange, we present the first complete calculation of the relevant nuclear matrix elements, performed within the interacting boson model (IBM-2). Furthermore, we calculate the relevant phase space factors using exact Dirac electron wave functions, taking into account the finite nuclear size and screening by the electron cloud. The obtained numerical results are presented together with up-to-date limits on the standard mass mechanism and effective 0νββ short-range operators in the interacting boson model framework. Finally, we interpret the limits in the particle physics scenarios incorporating heavy sterile neutrinos, left-right symmetry and R-parity violating supersymmetry.

Keywords: particle physics; nuclear physics

Free keywords: electroweak interactions in nuclear physics; neutrinoless double beta decay; nuclear structure and decays; nuclear tests of fundamental interactions; symmetries

Contributing organizations

Related projects

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 2

Last updated on 2022-20-09 at 13:50