Model-independent Approach of the JUNO $^{8}$B Solar Neutrino Program - INSPIRE

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Model-independent Approach of the JUNO $^{8}$ B Solar Neutrino Program

JUNO

Collaboration

Oct 15, 2022

19 pages

Published in:

Astrophys.J. 965 (2024) 2, 122

Published: Apr 12, 2024

e-Print:

2210.08437 [hep-ex]

DOI:

10.3847/1538-4357/ad2bfd

Experiments:

JUNO

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Abstract: (IOP)

The physics potential of detecting

^{8}

B solar neutrinos will be exploited at the Jiangmen Underground Neutrino Observatory (JUNO), in a model-independent manner by using three distinct channels of the charged current (CC), neutral current (NC), and elastic scattering (ES) interactions. Due to the largest-ever mass of

^{13}

C nuclei in the liquid scintillator detectors and the expected low background level,

^{8}

B solar neutrinos are observable in the CC and NC interactions on

^{13}

C for the first time. By virtue of optimized event selections and muon veto strategies, backgrounds from the accidental coincidence, muon-induced isotopes, and external backgrounds can be greatly suppressed. Excellent signal-to-background ratios can be achieved in the CC, NC, and ES channels to guarantee the observation of the

^{8}

B solar neutrinos. From the sensitivity studies performed in this work, we show that JUNO, with 10 yr of data, can reach the 1σ precision levels of 5%, 8%, and 20% for the

^{8}

B neutrino flux, , and , respectively. Probing the details of both solar physics and neutrino physics would be unique and helpful. In addition, when combined with the Sudbury Neutrino Observatory measurement, the world's best precision of 3% is expected for the measurement of the

^{8}

B neutrino flux.

Note:

19 pages, 7 figures, accepted version to appear in The Astrophysical Journal. Yufeng Li and Jiajie Ling are corresponding authors

neutrino: solar
neutrino: flux
background: low
JUNO
neutrino: oscillation
neutrino: mixing angle
neutrino: mass difference
observatory
SNO
sensitivity

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