Solar neutrino results from Super-Kamiokande

Research output: Contribution to journalConference article

Abstract

Recent results of the Super-Kamiokande (SK) solar neutrino measurements are presented. The main goal of SK's solar analysis is to observe the MSW effect, i.e. a solar neutrino energy spectrum distortion induced by matter in the Sun, and a day/night solar neutrino flux asymmetry induced by matter in the Earth. Thanks to the improvement of the detector's water circulation system, low energy background levels have been reduced and clear solar neutrino signals are seen for 4.0-4.5 MeV electron kinetic energies, along with some indications of a signal even down to 3.5-4.0 MeV. The combined energy spectrum and day/night solar neutrino flux from period I to period IV in SK will be presented. A global oscillation analysis has been carried out using SK-I, II, III, and IV data, and by combining these results with the results of other solar neutrino experiments as well as the KamLAND reactor neutrino experiment. The results of this global analysis will also be presented.

Original languageEnglish
JournalProceedings of Science
Volume2012-July
Publication statusPublished - Jan 1 2012
Externally publishedYes
Event36th International Conference on High Energy Physics, ICHEP 2012 - Melbourne, Australia
Duration: Jul 4 2012Jul 11 2012

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solar neutrinos
night
energy spectra
water circulation
indication
sun
neutrinos
kinetic energy
reactors
asymmetry
oscillations
detectors
electrons

ASJC Scopus subject areas

  • General

Cite this

Solar neutrino results from Super-Kamiokande. / Koshio, Yusuke.

In: Proceedings of Science, Vol. 2012-July, 01.01.2012.

Research output: Contribution to journalConference article

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