Solar neutrino results in Super-Kamiokande-III
K. AbeKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanY. HayatoInstitute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8582, JapanT. IidaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanM. IkedaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanC. IshiharaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanK. IyogiKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanJ. KamedaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanKazuyoshi KobayashiKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanY. KoshioKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanY. KozumaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanM. MiuraKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanS. MoriyamaInstitute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8582, JapanM. NakahataInstitute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8582, JapanS. NakayamaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanY. ObayashiKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanHiroshi OgawaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanH. SekiyaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanM. ShiozawaInstitute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8582, JapanY. SuzukiInstitute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8582, JapanA. TakedaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanY. TakenagaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanK. UenoKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanK. UeshimaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanH. WatanabeKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanS. YamadaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanT. YokozawaKamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, JapanS. HazamaResearch Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, JapanH. KajiResearch Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, JapanT. KajitaInstitute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8582, JapanK. KaneyukiInstitute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8582, JapanT. C. MclachlanResearch Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, JapanK. OkumuraResearch Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, JapanYuki ShimizuResearch Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, JapanN. TanimotoResearch Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, JapanM. R. VaginsDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAL. LabargaDepartment of Theoretical Physics, University Autonoma Madrid, 28049 Madrid, SpainL. M. MagroDepartment of Theoretical Physics, University Autonoma Madrid, 28049 Madrid, SpainFrédéric DufourDepartment of Physics, Boston University, Boston, Massachusetts 02215, USAE. KearnsDepartment of Physics, Boston University, Boston, Massachusetts 02215, USAM. LitosDepartment of Physics, Boston University, Boston, Massachusetts 02215, USAJ. L. RaafDepartment of Physics, Boston University, Boston, Massachusetts 02215, USAJ. L. StoneDepartment of Physics, Boston University, Boston, Massachusetts 02215, USAL. SulakDepartment of Physics, Boston University, Boston, Massachusetts 02215, USAW. WangDepartment of Physics, Boston University, Boston, Massachusetts 02215, USAM. GoldhaberPhysics Department, Brookhaven National Laboratory, Upton, New York 11973, USAK. BaysDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAD. CasperDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAJ. P. CravensDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAW. R. KroppDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAS. MineDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAC. RegisDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAA. RenshawDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAM. SmyDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAH. W. SobelDepartment of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USAK. S. GanezerDepartment of Physics, California State University, Dominguez Hills, Carson, California 90747, USAJ. HillDepartment of Physics, California State University, Dominguez Hills, Carson, California 90747, USAW. E. KeigDepartment of Physics, California State University, Dominguez Hills, Carson, California 90747, USAJ. S. JangDepartment of Physics, Chonnam National University, Kwangju 500-757, KoreaJ. Y. KimDepartment of Physics, Chonnam National University, Kwangju 500-757, KoreaI. T. LimDepartment of Physics, Chonnam National University, Kwangju 500-757, KoreaJ. AlbertDepartment of Physics, Duke University, Durham, North Carolina 27708, USAR. WendellDepartment of Physics, Duke University, Durham, North Carolina 27708, USAT. WongjiradDepartment of Physics, Duke University, Durham, North Carolina 27708, USAK. ScholbergDepartment of Physics, Duke University, Durham, North Carolina 27708, USAC. W. WalterDepartment of Physics, Duke University, Durham, North Carolina 27708, USAT. IshizukaDepartment of Systems Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, JapanS. TasakaDepartment of Physics, Gifu University, Gifu, Gifu 501-1193, JapanJ. G. LearnedDepartment of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USAS. MatsunoDepartment of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USAY. WatanabePhysics Division, Department of Engineering, Kanagawa University, Kanagawa, Yokohama 221-8686, JapanT. HasegawaHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanToru IshidaHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanT. IshiiHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanT. KobayashiHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanT. NakadairaHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanK. NakamuraHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanK. NishikawaHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanH. NishinoHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanY. OyamaHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanK. SakashitaHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanT. SekiguchiHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanT. TsukamotoHigh Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, JapanY. TakeuchiDepartment of Physics, Kobe University, Kobe, Hyogo 657-8501, JapanA. MinaminoDepartment of Physics, Kyoto University, Kyoto, Kyoto 606-8502, JapanT. NakayaDepartment of Physics, Kyoto University, Kyoto, Kyoto 606-8502, JapanY. FukudaDepartment of Physics, Miyagi University of Education, Sendai, Miyagi 980-0845, JapanY. ItowSolar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, JapanG. MitsukaSolar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, JapanTakayuki TanakaSolar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, JapanC. K. JungDepartment of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, USAG. LopezDepartment of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, USAC. McGrewDepartment of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, USAR. TerriDepartment of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, USAC. YanagisawaDepartment of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, USAN. TamuraDepartment of Physics, Niigata University, Niigata, Niigata 950-2181, JapanH. IshinoDepartment of Physics, Okayama University, Okayama, Okayama 700-8530, JapanA. KibayashiDepartment of Physics, Okayama University, Okayama, Okayama 700-8530, JapanS MinoDepartment of Physics, Okayama University, Okayama, Okayama 700-8530, JapanT. MoriDepartment of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
2011en
ABI
Abstract
The results of the third phase of the Super-Kamiokande solar neutrino measurement are presented and compared to the first and second phase results. With improved detector calibrations, a full detector simulation, and improved analysis methods, the systematic uncertainty on the total neutrino flux is estimated to be $\ifmmode\pm\else\textpm\fi{}2.1%$, which is about two thirds of the systematic uncertainty for the first phase of Super-Kamiokande. The observed $^{8}\mathrm{B}$ solar flux in the 5.0 to 20 MeV total electron energy region is $2.32\ifmmode\pm\else\textpm\fi{}0.04(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.05(\mathrm{sys})\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }{\mathrm{cm}}^{\ensuremath{-}2}\text{ }{\mathrm{sec}}^{\ensuremath{-}1}$ under the assumption of pure electron-flavor content, in agreement with previous measurements. A combined oscillation analysis is carried out using SK-I, II, and III data, and the results are also combined with the results of other solar neutrino experiments. The best-fit oscillation parameters are obtained to be ${sin}^{2}{\ensuremath{\theta}}_{12}={0.30}_{\ensuremath{-}0.01}^{+0.02}({tan}^{2}{\ensuremath{\theta}}_{12}={0.42}_{\ensuremath{-}0.02}^{+0.04})$ and $\ensuremath{\Delta}{m}_{21}^{2}={6.2}_{\ensuremath{-}1.9}^{+1.1}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}\text{ }\text{ }{\mathrm{eV}}^{2}$. Combined with KamLAND results, the best-fit oscillation parameters are found to be ${sin}^{2}{\ensuremath{\theta}}_{12}=0.31\ifmmode\pm\else\textpm\fi{}0.01({tan}^{2}{\ensuremath{\theta}}_{12}=0.44\ifmmode\pm\else\textpm\fi{}0.03)$ and $\ensuremath{\Delta}{m}_{21}^{2}=7.6\ifmmode\pm\else\textpm\fi{}0.2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}\text{ }\text{ }{\mathrm{eV}}^{2}$. The $^{8}\mathrm{B}$ neutrino flux obtained from global solar neutrino experiments is $5.3\ifmmode\pm\else\textpm\fi{}0.2(\mathrm{stat}+\mathrm{sys})\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }{\mathrm{cm}}^{\ensuremath{-}2}\text{ }{\mathrm{s}}^{\ensuremath{-}1}$, while the $^{8}\mathrm{B}$ flux becomes $5.1\ifmmode\pm\else\textpm\fi{}0.1(\mathrm{stat}+\mathrm{sys})\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }{\mathrm{cm}}^{\ensuremath{-}2}\text{ }{\mathrm{s}}^{\ensuremath{-}1}$ by adding KamLAND results. In a three-flavor analysis combining all solar neutrino experiments, the upper limit of ${sin}^{2}{\ensuremath{\theta}}_{13}$ is 0.060 at 95% C.L.. After combination with KamLAND results, the upper limit of ${sin}^{2}{\ensuremath{\theta}}_{13}$ is found to be 0.059 at 95% C.L.
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