Feasibility and physics potential of detecting B-8 solar neutrinos at JUNO
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10437189" target="_blank" >RIV/00216208:11320/21:10437189 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lyb~up.bH5" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lyb~up.bH5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1674-1137/abd92a" target="_blank" >10.1088/1674-1137/abd92a</a>
Alternative languages
Result language
angličtina
Original language name
Feasibility and physics potential of detecting B-8 solar neutrinos at JUNO
Original language description
The Jiangmen Underground Neutrino Observatory (JUNO) features a 20 kt multi-purpose underground liquid scintillator sphere as its main detector. Some of JUNO's features make it an excellent location for B-8 solar neutrino measurements, such as its low-energy threshold, high energy resolution compared with water Cherenkov detectors, and much larger target mass compared with previous liquid scintillator detectors. In this paper, we present a comprehensive assessment of JUNO's potential for detecting B solar neutrinos via the neutrino-electron elastic scattering process. A reduced 2 MeV threshold for the recoil electron energy is found to be achievable, assuming that the intrinsic radioactive background U-238 and Th-232 in the liquid scintillator can be controlled to 10(-17) g/g. With ten years of data acquisition, approximately 60,000 signal and 30,000 background events are expected. This large sample will enable an examination of the distortion of the recoil electron spectrum that is dominated by the neutrino flavor transformation in the dense solar matter, which will shed new light on the inconsistency between the measured electron spectra and the predictions of the standard three-flavor neutrino oscillation framework. If Delta m(21)(2) = 4.8 x 10(-5) (7.5 x 10(-5)) eV(2), JUNO can provide evidence of neutrino oscillation in the Earth at approximately the 3 sigma(2 sigma) level by measuring the non-zero signal rate variation with respect to the solar zenith angle. Moreover, JUNO can simultaneously measure Delta m(21)(2) using B-8 solar neutrinos to a precision of 20% or better, depending on the central value, and to sub-percent precision using reactor antineutrinos. A comparison of these two measurements from the same detector will help understand the current mild inconsistency between the value of Delta m(21)(2) reported by solar neutrino experiments and the KamLAND experiment.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
<a href="/en/project/LTT17021" target="_blank" >LTT17021: Reactor neutrino experiments Daya Bay and JUNO</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chinese Physics C
ISSN
1674-1137
e-ISSN
—
Volume of the periodical
45
Issue of the periodical within the volume
2
Country of publishing house
CN - CHINA
Number of pages
18
Pages from-to
023004
UT code for WoS article
000608871800001
EID of the result in the Scopus database
2-s2.0-85100798026