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 language | English |
|---|---|
| Title of host publication | Frascati Physics Series |
| Pages | 75-84 |
| Number of pages | 10 |
| Volume | 42 |
| Edition | SPEC. ISS. |
| Publication status | Published - 2006 |
| Externally published | Yes |
| Event | 20th 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 2006 → Mar 11 2006 |
Other
| Other | 20th Rencontres de Physique de la Vallee d'Aoste: Results and Perspectives in Particle Physics - 20th Physics Conference in the Aosta Valley 2006 |
|---|---|
| Country | Italy |
| City | La Thuile, Aosta Valley |
| Period | 3/5/06 → 3/11/06 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Recent results of super-kamiokande. / Koshio, Yusuke.
Frascati Physics Series. Vol. 42 SPEC. ISS. ed. 2006. p. 75-84.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Recent results of super-kamiokande
AU - Koshio, Yusuke
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
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M3 - Conference contribution
SN - 8886409478
SN - 9788886409476
VL - 42
SP - 75
EP - 84
BT - Frascati Physics Series
ER -