Solar neutrino results in Super-Kamiokande-III
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 ?2.1%, which is about two thirds of the systematic uncertainty for the first phase of Super-Kamiokande. The observed 8B solar flux in the 5.0 to 20 MeV total electron energy region is 2.32+/-0.04 (stat.)+/-0.05 (sys.) *10^6 cm^-2sec^-1, 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 {\theta}12 = 0.30+0.02-0.01(tan^2 {\theta}12 = 0.42+0.04 -0.02) and {\Delta}m2_21 = 6.2+1.1-1.9 *10^-5eV^2. Combined with KamLAND results, the best-fit oscillation parameters are found to be sin^2 {\theta}12 = 0.31+/-0.01(tan^2 {\theta}12 = 0.44+/-0.03) and {\Delta}m2_21 = 7.6?0.2*10^-5eV^2 . The 8B neutrino flux obtained from global solar neutrino experiments is 5.3+/-0.2(stat.+sys.)*10^6cm^-2s^-1, while the 8B flux becomes 5.1+/-0.1(stat.+sys.)*10^6cm^-2s^-1 by adding KamLAND result. In a three-flavor analysis combining all solar neutrino experiments, the upper limit of sin^2 {\theta}13 is 0.060 at 95% C.L.. After combination with KamLAND results, the upper limit of sin^2 {\theta}13 is found to be 0.059 at 95% C.L..
Cite
@article{arxiv.1010.0118,
title = {Solar neutrino results in Super-Kamiokande-III},
author = {K. Abe and Y. Hayato and T. Iida and M. Ikeda and C. Ishihara and K. Iyogi and J. Kameda and K. Kobayashi and Y. Koshio and Y. Kozuma and M. Miura and S. Moriyama and M. Nakahata and S. Nakayama and Y. Obayashi and H. Ogawa and H. Sekiya and M. Shiozawa and Y. Suzuki and A. Takeda and Y. Takenaga and K. Ueno and K. Ueshima and H. Watanabe and S. Yamada and T. Yokozawa and S. Hazama and H. Kaji and T. Kajita and K. Kaneyuki and T. McLachlan and K. Okumura and Y. Shimizu and N. Tanimoto and M. R. Vagins and L. Labarga and L. M Magro and F. Dufour and E. Kearns and M. Litos and J. L. Raaf and J. L. Stone and L. R. Sulak and W. Wang and M. Goldhaber and K. Bays and D. Casper and J. P. Cravens and W. R. Kropp and S. Mine and C. Regis and A. Renshaw and M. B. Smy and H. W. Sobel and K. S. Ganezer and J. Hill and W. E. Keig and J. S. Jang and J. Y. Kim and I. T. Lim and J. Albert and R. Wendell and T. Wongjirad and K. Scholberg and C. W. Walter and T. Ishizuka and S. Tasaka and J. G. Learned and S. Matsuno and Y. Watanabe and T. Hasegawa and T. Ishida and T. Ishii and T. Kobayashi and T. Nakadaira and K. Nakamura and K. Nishikawa and H. Nishino and Y. Oyama and K. Sakashita and T. Sekiguchi and T. Tsukamoto and A. T. Suzuki and Y. Takeuchi and A. Minamino and T. Nakaya and Y. Fukuda and Y. Itow and G. Mitsuka and T. Tanaka and C. K. Jung and G. Lopez and C. McGrew and R. Terri and C. Yanagisawa and N. Tamura and H. Ishino and A. Kibayashi and S. Mino and T. Mori and M. Sakuda and H. Toyota and Y. Kuno and M. Yoshida and S. B. Kim and B. S. Yang and T. Ishizuka and H. Okazawa and Y. Choi and K. Nishijima and Y. Yokosawa and M. Koshiba and Y. Totsuka and M. Yokoyama and S. Chen and Y. Heng and Z. Yang and H. Zhang and D. Kielczewska and P. Mijakowski and K. Connolly and M. Dziomba and E. Thrane and R. J. Wilkes},
journal= {arXiv preprint arXiv:1010.0118},
year = {2012}
}
Comments
19 pages, 33 figures in the main text. The appendix section on errata is added in v3