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

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

Abstract

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.

Citation

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. https://doi.org/10.1103/physrevd.108.035010

• 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
• DOI: https://doi.org/10.1103/physrevd.108.035010
• Public URL: https://durham-repository.worktribe.com/output/1876310