[1] Univ Tokyo, Inst Cosm Ray Res, Kamioka Observ, Kamioka, Gifu 5061205, Japan
[2] Univ Tokyo, Inst Cosm Ray Res, Res Ctr Cosm Neutrinos, Kashiwa, Chiba 2778582, Japan
[3] Univ Autonoma Madrid, Dept Theoret Phys, E-28049 Madrid, Spain
[4] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA
[5] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada
[6] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA
[7] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[8] Calif State Univ Dominguez Hills, Dept Phys, Carson, CA 90747 USA
[9] Chonnam Natl Univ, Dept Phys, Kwangju 500757, South Korea
[10] Duke Univ, Dept Phys, Durham, NC 27708 USA
[11] Fukuoka Inst Technol, Jr Coll, Fukuoka, Fukuoka 8110295, Japan
[12] Gifu Univ, Dept Phys, Gifu, Gifu 5011193, Japan
[13] Gwangju Inst Sci & Technol, GIST Coll, Gwangju 500712, South Korea
[14] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA
[15] Imperial Coll London, Dept Phys, London SW7 2AZ, England
[16] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
[17] Kobe Univ, Dept Phys, Kobe, Hyogo 6578501, Japan
[18] Kyoto Univ, Dept Phys, Kyoto, Kyoto 6068502, Japan
[19] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England
[20] Miyagi Univ Educ, Dept Phys, Sendai, Miyagi 9800845, Japan
[21] Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi 4648602, Japan
[22] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Univers, Nagoya, Aichi 4648602, Japan
[23] Natl Ctr Nucl Res, PL-00681 Warsaw, Poland
[24] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[25] Okayama Univ, Dept Phys, Okayama, Okayama 7008530, Japan
[26] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan
[27] Univ Oxford, Dept Phys, Oxford OX1 3PU, England
[28] Queen Mary Univ London, Sch Phys & Astron, London E1 4NS, England
[29] Univ Regina, Dept Phys, 3737 Wascana Pkwy, Regina, SK S4S 0A2, Canada
[30] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea
[31] Univ Sheffield, Dept Phys & Astron, Sheffield S10 2TN, S Yorkshire, England
[32] Shizuoka Univ Welf, Dept Informat Social Welf, Yaizu, Shizuoka 4258611, Japan
[33] STFC, Rutherford Appleton Lab, Oxford, England
[34] Daresbury Lab, Warrington OX11 0QX, Cheshire, England
[35] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea
[36] Tokai Univ, Dept Phys, Hiratsuka, Kanagawa 2591292, Japan
[37] Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan
[38] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
[39] Univ Tokyo, Inst Adv Study, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, Japan
[40] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan
[41] Tokyo Univ Sci, Fac Sci & Technol, Dept Phys, Noda, Chiba 2788510, Japan
[42] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada
[43] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
[44] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
[45] Univ Washington, Dept Phys, Seattle, WA 98195 USA
[46] Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2408501, Japan
[47] UCLA, Dept Phys & Astron, Los Angeles, CA 90095 USA
[48] CUNY, BMCC, Sci Dept, New York, NY 10021 USA