Seminars
A. Vishneva - Simultaneous spectroscopy of pp, 7Be and pep solar neutrinos in the Phase II of Borexino experiment
by
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Europe/Rome
Pontecorvo room (LNGS)
Pontecorvo room
LNGS
Description
The recent analysis of the Borexino Phase II data gives new results for fluxes of solar neutrinos from pp, 7Be and pep reactions with a significantly better precision. Namely, pp and 7Be neutrino fluxes are measured with 10% and 3% precision, respectively, while neutrinos from the pep reaction are observed with the significance exceeding 5 standard deviations for the first time. Improvements in analysis techniques made it possible to perform a simultaneous spectral fit including all three solar neutrino spectral components. In addition, a limit on the CNO neutrino flux has been obtained and a possibility of solving the solar metallicity issue is studied.
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A. Vishneva
JINR Dubna
Russia