地球物质效应对太阳中微子振荡的首个迹象
高能物理 - 实验
2014-03-25 v3
摘要
我们报告了一个迹象：当太阳 B 中微子在夜间穿过地球时，它们在 Super-Kamiokande 探测器中与电子的弹性散射率较大。我们确定的昼/夜不对称性（定义为平均昼间速率与平均夜间速率之差除以这两个速率的平均值）为 ，偏离零值 2.7 。由于弹性散射过程主要对电子味太阳中微子敏感，非零的昼/夜不对称性意味着太阳中微子的味振荡受到中微子飞行路径中物质存在的影响。Super-Kamiokande 的昼/夜不对称性与 eVeV 范围内的大混合角 的中微子振荡一致，置信度为 C.L.。
引用
@article{arxiv.1312.5176,
title = {First Indication of Terrestrial Matter Effects on Solar Neutrino Oscillation},
author = {A. Renshaw and K. Abe and Y. Hayato and K. Iyogi and J. Kameda and Y. Kishimoto and M. Miura and S. Moriyama and M. Nakahata and Y. Nakano and S. Nakayama and H. Sekiya and M. Shiozawa and Y. Suzuki and A. Takeda and Y. Takenaga and T. Tomura and K. Ueno and T. Yokozawa and R. A. Wendell and T. Irvine and T. Kajita and K. Kaneyuki and K. P. Lee and Y. Nishimura and K. Okumura and T. McLachlan and L. Labarga and S. Berkman and H. A. Tanaka and S. Tobayama and E. Kearns and J. L. Raaf and J. L. Stone and L. R. Sulak and M. Goldhabar and K. Bays and G. Carminati and W. R. Kropp and S. Mine and M. B. Smy and H. W. Sobel and K. S. Ganezer and J. Hill and W. E. Keig and N. Hong and J. Y. Kim and I. T. Lim and T. Akiri and A. Himmel and K. Scholberg and C. W. Walter and T. Wongjirad and T. Ishizuka and S. Tasaka and J. S. Jang and J. G. Learned and S. Matsuno and S. N. Smith and T. Hasegawa and T. Ishida and T. Ishii and T. Kobayashi and T. Nakadaira and K. Nakamura and Y. Oyama and K. Sakashita and T. Sekiguchi and T. Tsukamoto and A. T. Suzuki and Y. Takeuchi and C. Bronner and S. Hirota and K. Huang and K. Ieki and M. Ikeda and T. Kikawa and A. Minamino and T. Nakaya and K. Suzuki and S. Takahashi and Y. Fukuda and K. Choi and Y. Itow and G. Mitsuka and P. Mijakowski and J. Hignight and J. Imber and C. K. Jung and C. Yanagisawa and H. Ishino and A. Kibayashi and Y. Koshio and T. Mori and M. Sakuda and T. Yano and Y. Kuno and R. Tacik and S. B. Kim and H. Okazawa and Y. Choi and K. Nishijima and M. Koshiba and Y. Totsuka and M. Yokoyama and K. Martens and Ll. Marti and M. R. Vagins and J. F. Martin and P. de Perio and A. Konaka and M. J. Wilking and S. Chen and Y. Zhang and R. J. Wilkes},
journal= {arXiv preprint arXiv:1312.5176},
year = {2014}
}
备注
6 pages, 4 figures