solar neutrino measurement with KamLAND
Journal Article
·
· Physical Review C, Nuclear Physics
In this article, we report a measurement of the neutrino-electron elastic scattering rate of 862 keV 7Be solar neutrinos based on a 165.4 kt d exposure of KamLAND. The observed rate is 582 ± 94 (kt d)-1, which corresponds to an 862-keV 7Be solar neutrino flux of (3.26 ± 0.52) × 109 cm-2s-1, assuming a pure electron-flavor flux. Comparing this flux with the standard solar model prediction and further assuming three-flavor mixing, a νe survival probability of 0.66 ± 0.15 is determined from the KamLAND data. Utilizing a global three-flavor oscillation analysis, we obtain a total 7Be solar neutrino flux of (5.82 ± 1.02) × 109 cm-2s-1, which is consistent with the standard solar model predictions.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- Contributing Organization:
- KamLAND Collaboration
- Grant/Contract Number:
- AC02-05CH11231; FG02-01ER41166
- OSTI ID:
- 1378662
- Journal Information:
- Physical Review C, Nuclear Physics, Journal Name: Physical Review C, Nuclear Physics Journal Issue: 5 Vol. 92; ISSN 0556-2813; ISSN PRVCAN
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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