Recent results of super-kamiokande

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The recent results of atmospheric and solar neutrino measurements in the first (SK-I) and second (SK-II) phase of Super-Kamiokande were presented. The neutrino oscillation analysis in atmospheric neutrino was discussed. The best-fit parameters of (Δm2, sin2 2θ) = (2.5×10-3 eV2, 1.0) which was combined in SK-I and SK-II were obtained with vμ ↔ vτ two-flavor oscillation model using zenith angle analysis. Other hypotheses to explain the atmospheric neutrino data were not well supported using L/E analysis method. The three-flavor oscillation analysis was also applied. No significant enhancement due to matter effect, which occurs when neutrinos propagate inside the Earth on the condition of θ13 ≠0, cannot be seen. The results of solar neutrino data from SK-I and SK-II were presented. Super-Kamiokande can measure not only the solar neutrino flux but also its energy spectrum and time variations such as day-night and seasonal differences. The detail oscillation analysis using those information are applied to SK-I data. Combining SK and SNO data, the obtained oscillation parameters becomes so-called 'LMA' solution. And also three-flavor oscillation analysis was applied to solar neutrino data, the upper limit for sin2 θ13 is 0.067 at 90%C.L.

Original languageEnglish
Title of host publicationLes Rencontres de Physique de la Vallee d'Aoste
Subtitle of host publicationResults and Perspectives in Particle Physics
Pages75-84
Number of pages10
EditionSPEC. ISS.
Publication statusPublished - Dec 1 2006
Externally publishedYes
Event20th Rencontres de Physique de la Vallee d'Aoste: Results and Perspectives in Particle Physics - 20th Physics Conference in the Aosta Valley 2006 - La Thuile, Aosta Valley, Italy
Duration: Mar 5 2006Mar 11 2006

Publication series

NameFrascati Physics Series
NumberSPEC. ISS.
Volume42
ISSN (Print)1122-5157

Other

Other20th Rencontres de Physique de la Vallee d'Aoste: Results and Perspectives in Particle Physics - 20th Physics Conference in the Aosta Valley 2006
CountryItaly
CityLa Thuile, Aosta Valley
Period3/5/063/11/06

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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