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JUNO as a probe of the pseudo-Dirac nature using solar neutrinos

Franklin, Jack; Perez-Gonzalez, Yuber F.; Turner, Jessica


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Jack Franklin
PGR Student Doctor of Philosophy


It remains a possibility that neutrinos are pseudo-Dirac states, such that a generation is composed of two maximally mixed Majorana neutrinos separated by a very small mass difference. We explore the physics potential of the JUNO experiment in constraining this possibility using the measurement of solar neutrinos. In particular, we investigate cases where one or three sterile states are present in addition to the active states. We consider two scenarios: one where JUNO’s energy threshold allows for the measurement of pp solar neutrinos, and the case where JUNO can only measure 7Be neutrinos and above. We find that JUNO will be able to constrain pseudo-Dirac mass splittings of δm2≳2.9×10−13eV2 for the scenario including pp solar neutrinos, and δm2≳1.9×10−12eV2 when the measurement only considers 7Be monochromatic neutrinos, at the 3σ C.L. Thus, including pp neutrinos will be crucial for JUNO to improve current constraints on the pseudo-Dirac scenario from solar neutrinos.


Franklin, J., Perez-Gonzalez, Y. F., & Turner, J. (2023). JUNO as a probe of the pseudo-Dirac nature using solar neutrinos. Physical Review D, 108(3), Article 035010.

Journal Article Type Article
Acceptance Date Jul 13, 2023
Online Publication Date Aug 8, 2023
Publication Date 2023-08
Deposit Date Nov 3, 2023
Publicly Available Date Nov 3, 2023
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 108
Issue 3
Article Number 035010
Public URL


Published Journal Article (522 Kb)


Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. 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.

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