Abstract
Neutrino produced in a chain of nuclear reactions in the Sun starting from the fusion of two protons, for the first time has been detected in a real-time detector in spectrometric mode. The unique properties of the Borexino detector provided an oppurtunity to disentangle pp-neutrino spectrum from the background components. A comparison of the total neutrino flux from the Sun with Solar luminosity in photons provides a test of the stability of the Sun on the 105 years time scale, and sets a strong limit on the power production in the unknown energy sources in the Sun of no more than 4% of the total energy production at 90% C.L.
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Talk at the International Workshop on Prospects of Particle Physics: “Neutrino Physics and Astrophysics”, JINR, INR, 1 February–8 February 2015, Valday, Russia.
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Smirnov, O.Y., Agostini, M., Appel, S. et al. Measurement of neutrino flux from the primary proton–proton fusion process in the Sun with Borexino detector. Phys. Part. Nuclei 47, 995–1002 (2016). https://doi.org/10.1134/S106377961606023X
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DOI: https://doi.org/10.1134/S106377961606023X