Phys. Rev. Lett.
93,
021802
(2004)
[5 pages]
Limits on the Neutrino Magnetic Moment using 1496 Days of Super-Kamiokande-I Solar Neutrino Data
D. W. Liu et al. Super-Kamiokande Collaboration
Show All Authors/Affiliations
Hide All Authors/Affiliations
D. W. Liu4, Y. Ashie1, S. Fukuda1, Y. Fukuda1, K. Ishihara1, Y. Itow1, Y. Koshio1, A. Minamino1, M. Miura1, S. Moriyama1, M. Nakahata1, T. Namba1, R. Nambu1, Y. Obayashi1, N. Sakurai1, M. Shiozawa1, Y. Suzuki1, H. Takeuchi1, Y. Takeuchi1, S. Yamada1, M. Ishitsuka2, T. Kajita2, K. Kaneyuki2, S. Nakayama2, A. Okada2, T. Ooyabu2, C. Saji2, S. Desai3, M. Earl3, E. Kearns3, M. D. Messier3,*, J. L. Stone3, L. R. Sulak3, C. W. Walter3, W. Wang3, T. Barszczak4, D. Casper4, J. P. Cravens4, W. Gajewski4, W. R. Kropp4, S. Mine4, M. B. Smy4, H. W. Sobel4, C. W. Sterner4, M. R. Vagins4, K. S. Ganezer5, J. Hill5, W. E. Keig5, J. Y. Kim6, I. T. Lim6, R. W. Ellsworth7, S. Tasaka8, A. Kibayashi9, J. G. Learned9, S. Matsuno9, D. Takemori9, Y. Hayato10, A. K. Ichikawa10, T. Ishida10, T. Ishii10, T. Iwashita10, J. Kameda10, T. Kobayashi10, T. Maruyama10,†, K. Nakamura10, K. Nitta10, Y. Oyama10, M. Sakuda10, Y. Totsuka10, A. T. Suzuki11, M. Hasegawa12, K. Hayashi12, T. Inagaki12, I. Kato12, H. Maesaka12, T. Morita12, T. Nakaya12, K. Nishikawa12, T. Sasaki12, S. Ueda12, S. Yamamoto12, T. J. Haines13,4, S. Dazeley14, S. Hatakeyama14, R. Svoboda14, E. Blaufuss15, J. A. Goodman15, G. Guillian15, G. W. Sullivan15, D. Turcan15, K. Scholberg16, A. Habig17, M. Ackermann18, C. K. Jung18, T. Kato18, K. Kobayashi18, K. Martens18,‡, M. Malek18, C. Mauger18, C. McGrew18, E. Sharkey18, B. Viren18,§, C. Yanagisawa18, T. Toshito19, C. Mitsuda20, K. Miyano20, T. Shibata20, J. Ishii21, Y. Kajiyama21, Y. Kuno21, Y. Nagashima21, M. Takita21, M. Yoshida21, H. I. Kim22, S. B. Kim22, J. Yoo22, H. Okazawa23, T. Ishizuka24, Y. Choi25, H. K. Seo25, Y. Gando26, T. Hasegawa26, K. Inoue26, J. Shirai26, A. Suzuki26, M. Koshiba27, T. Hashimoto28, Y. Nakajima28, K. Nishijima28, H. Ishino29, M. Morii29, R. Nishimura29, Y. Watanabe29, D. Kielczewska30,4, J. Zalipska30, R. Gran31, K. K. Shiraishi31, K. Washburn31, and R. J. Wilkes31 (Super-Kamiokande Collaboration)
1Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu, 506-1205, Japan
2Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
3Department of Physics, Boston University, Boston, Massachusetts 02215, USA
4Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
5Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
6Department of Physics, Chonnam National University, Kwangju 500-757, Korea
7Department of Physics, George Mason University, Fairfax, Virginia 22030, USA
8Department of Physics, Gifu University, Gifu, Gifu 501-1193, Japan
9Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
10High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
11Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
12Department of Physics, Kyoto University, Kyoto 606-8502, Japan
13Physics Division, P-23, Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA
14Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
15Department of Physics, University of Maryland, College Park, Maryland 20742, USA
16Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
17Department of Physics, University of Minnesota, Duluth, Minnesota 55812-2496, USA
18Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
19Department of Physics, Nagoya University, Nagoya, Aichi 464-8602, Japan
20Department of Physics, Niigata University, Niigata, Niigata 950-2181, Japan
21Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
22Department of Physics, Seoul National University, Seoul 151-742, Korea
23International and Cultural Studies, Shizuoka Seika College, Yaizu, Shizuoka, 425-8611, Japan
24Department of Systems Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
25Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
26Research Center for Neutrino Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
27The University of Tokyo, Tokyo 113-0033, Japan
28Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
29Department of Physics, Tokyo Institute for Technology, Meguro, Tokyo 152-8551, Japan
30Institute of Experimental Physics, Warsaw University, 00-681 Warsaw, Poland
31Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
Received 7 February 2004; published 6 July 2004
A search for a nonzero neutrino magnetic moment has been conducted using 1496 live days of solar neutrino data from Super-Kamiokande-I. Specifically, we searched for distortions to the energy spectrum of recoil electrons arising from magnetic scattering due to a nonzero neutrino magnetic moment. In the absence of a clear signal, we found μν≤(3.6×10-10)μB at 90% C.L. by fitting to the Super-Kamiokande day-night spectra. The fitting took into account the effect of neutrino oscillation on the shapes of energy spectra. With additional information from other solar neutrino and KamLAND experiments constraining the oscillation region, a limit of μν≤(1.1×10-10)μB at 90% C.L. was obtained.
© 2004 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.021802
DOI:
10.1103/PhysRevLett.93.021802
PACS:
14.60.Pq, 13.15.+g, 13.40.Em, 26.65.+t
*Present address: Harvard University, Cambridge, MA 02138, USA. †Present address: Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA. ‡Present address: Department of Physics, University of Utah, Salt Lake City, UT 84112, USA. §Present address: Physics Department, Brookhaven National Laboratory, Upton, NY 11973, USA.
|
|
