Super-Kamiokande-III的太阳中微子结果
高能物理 - 实验
2012-12-24 v3
摘要
本文展示了Super-Kamiokande太阳中微子测量第三阶段的结果，并与第一和第二阶段的结果进行了比较。通过改进的探测器校准、完整的探测器模拟和改进的分析方法，总中微子通量的系统不确定度估计为?2.1%，约为Super-Kamiokande第一阶段系统不确定度的三分之二。在5.0至20 MeV总电子能量区域内观测到的8B太阳通量为2.32+/-0.04(统计)+/-0.05(系统)*10^6 cm^-2sec^-1，与之前的测量一致。利用SK-I、II和III的数据进行了联合振荡分析，结果也与其他太阳中微子实验的结果相结合。最佳拟合振荡参数为sin^2 θ12 = 0.30+0.02-0.01(tan^2 θ12 = 0.42+0.04-0.02)和Δm2_21 = 6.2+1.1-1.9 *10^-5eV^2。与KamLAND结果结合后，最佳拟合振荡参数为sin^2 θ12 = 0.31+/-0.01(tan^2 θ12 = 0.44+/-0.03)和Δm2_21 = 7.6?0.2*10^-5eV^2。全球太阳中微子实验得到的8B中微子通量为5.3+/-0.2(统计+系统)*10^6cm^-2s^-1，而加入KamLAND结果后，8B通量变为5.1+/-0.1(统计+系统)*10^6cm^-2s^-1。在结合所有太阳中微子实验的三味分析中，sin^2 θ13的上限在95%置信水平下为0.060。与KamLAND结果结合后，sin^2 θ13的上限在95%置信水平下为0.059。
引用
@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}
}
备注
19 pages, 33 figures in the main text. The appendix section on errata is added in v3