Deppisch, FF;
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. 10.1103/PhysRevD.102.095016.
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Abstract
Neutrinoless double beta decay ( 0 ν β β ) 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 0 ν β β 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 0 ν β β 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.
| Type: | Article |
|---|---|
| Title: | Analysis of light neutrino exchange and short-range mechanisms in 0νββ decay |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.102.095016 |
| Publisher version: | https://doi.org/10.1103/PhysRevD.102.095016 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. |
| Keywords: | Electroweak interactions in nuclear physics, Neutrinoless double beta decay, Nuclear structure & decays, Nuclear tests of fundamental interactions, Symmetries |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10115243 |
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