arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1707.08604astro-ph.HEhep-ex
收藏

在Super-Kamiokande探测器中搜寻IceCube合作组织报告的天体物理学中微子方向上的过量事件

Search for an excess of events in the Super-Kamiokande detector in the directions of the astrophysical neutrinos reported by the IceCube Collaboration

Kamiokande Collaboration, K. Abe, C. Bronner, G. Pronost, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kato, Y. Kishimoto, Ll. Marti, M. Miura, S. Moriyama, M. … 展开作者

Kamiokande Collaboration, K. Abe, C. Bronner, G. Pronost, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kato, Y. Kishimoto, Ll. Marti, M. Miura, S. Moriyama, M. Nakahata, Y. Nakano, S. Nakayama, Y. Okajima, A. Orii, H. Sekiya, M. Shiozawa, Y. Sonoda, A. Takeda, A. Takenaka, H. Tanaka, S. Tasaka, T. Tomura, R. Akutsu, T. Kajita, K. Kaneyuki, Y. Nishimura, K. Okumura, K. M. Tsui, L. Labarga, P. Fernandez, F. d. M. Blaszczyk, J. Gustafson, C. Kachulis, E. Kearns, J. L. Raaf, J. L. Stone, L. R. Sulak, S. Berkman, S. Tobayama, M. Goldhaber, M. Elnimr, W. R. Kropp, S. Mine, S. Locke, P. Weatherly, M. B. Smy, H. W. Sobel, V. Takhistov, K. S. Ganezer, J. Hill, J. Y. Kim, I. T. Lim, R. G. Park, A. Himmel, Z. Li, E. O'Sullivan, K. Scholberg, C. W. Walter, T. Ishizuka, T. Nakamura, J. S. Jang, K. Choi, J. G. Learned, S. Matsuno, S. N. Smith, J. Amey, R. P. Litchfield, W. Y. Ma, Y. Uchida, M. O. Wascko, S. Cao, M. Friend, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, KE. Abe, M. Hasegawa, Y. Nakano, A. T. Suzuki, Y. Takeuchi, T. Yano, S. V. Cao, T. Hayashino, T. Hiraki, S. Hirota, K. Huang, M. Jiang, A. Minamino, KE. Nakamura, T. Nakaya, B. Quilain, N. D. Patel, R. A. Wendell, L. H. V. Anthony, N. McCauley, A. Pritchard, Y. Fukuda, Y. Itow, M. Murase, F. Muto, P. Mijakowski, K. Frankiewicz, C. K. Jung, X. Li, J. L. Palomino, G. Santucci, C. Vilela, M. J. Wilking, C. Yanagisawa, S. Ito, D. Fukuda, H. Ishino, A. Kibayashi, Y. Koshio, H. Nagata, M. Sakuda, C. Xu, Y. Kuno, D. Wark, F. Di Lodovico, B. Richards, R. Tacik, S. B. Kim, A. Cole, L. Thompson, H. Okazawa, Y. Choi, K. Ito, K. Nishijima, M. Koshiba, Y. Totsuka, Y. Suda, M. Yokoyama, R. G. Calland, M. Hartz, K. Martens, C. Simpson, Y. Suzuki, M. R. Vagins, D. Hamabe, M. Kuze, T. Yoshida, M. Ishitsuka, J. F. Martin, C. M. Nantais, H. A. Tanaka, A. Konaka, S. Chen, L. Wan, Y. Zhang, A. Minamino, R. J. Wilkes

摘要:

我们提出了搜索的结果,在超级神冈(SK)探测器的能量超过几个GeV的轨道事件在IceCube报告的方向上的中微子过剩。使用了所有SK阶段(SK-I至SK-IV)的数据,时间跨度为1996年4月至2016年4月,对应于225千吨年的暴露量。我们从2010年至2014年的1347个实时日的数据集中考虑了14个IceCube赛道事件。我们使用泊松计数,以确定是否有多余的中微子在SK中检测到的10度搜索锥(5度的最高能量数据集)周围的重建方向的冰立方事件。在我们检查的任何搜索方向上都没有发现明显的过量。我们还寻找最近报道的IceCube多重峰事件的巧合。在第一个检测到的事件周围的$\pm$ 500 s时间窗口内没有检测到事件,并且在SK的生命周期内从该方向没有观察到明显的过量。

英文摘要:

We present the results of a search in the Super-Kamiokande (SK) detector for excesses of neutrinos with energies above a few GeV that are in the direction of the track events reported in IceCube. Data from all SK phases (SK-I through SK-IV) were used, spanning a period from April 1996 to April 2016 and corresponding to an exposure of 225 kilotonne-years . We considered the 14 IceCube track events from a data set with 1347 livetime days taken from 2010 to 2014. We use Poisson counting to determine if there is an excess of neutrinos detected in SK in a 10 degree search cone (5 degrees for the highest energy data set) around the reconstructed direction of the IceCube event. No significant excess was found in any of the search directions we examined. We also looked for coincidences with a recently reported IceCube multiplet event. No events were detected within a $\pm$ 500 s time window around the first detected event, and no significant excess was seen from that direction over the lifetime of SK.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑