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Title: Measurement of the Flux and Zenith-Angle Distribution of Upward Throughgoing Muons by Super-Kamiokande

Abstract

A total of 614 upward throughgoing muons of minimum energy 1.6thinspthinspGeV are observed by Super-Kamiokande during 537 detector live days. The measured muon flux is [1.74{plus_minus}0.07(stat){plus_minus} 0.02(sys)]{times}10{sup {minus}13} cm{sup {minus}2}thinsps{sup {minus}1}thinspsr{sup {minus}1} compared to an expected flux of [1.97{plus_minus}0.44(theor)]{times} 10{sup {minus}13} cm{sup {minus}2}thinsps{sup {minus}1}thinspsr{sup {minus}1} . The absolute measured flux is in agreement with the prediction within the errors. However, the zenith-angle dependence of the observed upward throughgoing muon flux does not agree with no-oscillation predictions. The observed distortion in shape is consistent with the {nu}{sub {mu}}{leftrightarrow}{nu}{sub {tau}} oscillation hypothesis with sin{sup 2}thinsp2{theta} {gt}0.4 and 1{times}10{sup {minus}3}{lt}{Delta}m{sup 2}{lt}1{times}1 0{sup {minus}1} eV{sup 2} at 90{percent} confidence level. {copyright} {ital 1999} {ital The American Physical Society}

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ;  [1]; ; ; ; ; ; ; ;  [2];  [3]; ; ; ; ; ; ; ; ; ; ;  [4]; ;  [5];  [6];  [7]; ; ; ; ; ;  [8]; ; ; ; ; ; ; ; ; ;  [9]; ; ;  [10];  [11]; ; ; « less
  1. Institute for Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo 188-8502 (Japan)
  2. Department of Physics, Boston University, Boston, Massachusetts 02215 (United States)
  3. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
  4. Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575 (United States)
  5. Department of Physics, California State University, Dominguez Hills, Carson, California 90747 (United States)
  6. Department of Physics, George Mason University, Fairfax, Virginia 22030 (United States)
  7. Department of Physics, Gifu University, Gifu, Gifu 501-1193 (Japan)
  8. Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822 (United States)
  9. Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)
  10. Department of Physics, Kobe University, Kobe, Hyogo 657-8501 (Japan)
  11. Physics Division, P-23, Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States)
Publication Date:
OSTI Identifier:
347043
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 82; Journal Issue: 13; Other Information: PBD: Mar 1999
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; COSMIC NEUTRINOS; NEUTRINO DETECTION; REST MASS; MUONS; NEUTRINO OSCILLATION; MEASURING METHODS

Citation Formats

Fukuda, Y., Hayakawa, T., Ichihara, E., Inoue, K., Ishihara, K., Ishino, H., Itow, Y., Kajita, T., Kameda, J., Kasuga, S., Kobayashi, K., Kobayashi, Y., Koshio, Y., Miura, M., Nakahata, M., Nakayama, S., Okada, A., Okumura, K., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Totsuka, Y., Yamada, S., Earl, M., Habig, A., Kearns, E., Messier, M.D., Scholberg, K., Stone, J.L., Sulak, L.R., Walter, C.W., Goldhaber, M., Barszczak, T., Casper, D., Gajewski, W., Kropp, W.R., Price, L.R., Reines, F., Smy, M., Sobel, H.W., Vagins, M.R., Haines, T.J., Kielczewska, D., Ganezer, K.S., Keig, W.E., Ellsworth, R.W., Tasaka, S., Flanagan, J.W., Kibayashi, A., Learned, J.G., Matsuno, S., Stenger, V.J., Takemori, D., Ishii, T., Kanzaki, J., Kobayashi, T., Mine, S., Nakamura, K., Nishikawa, K., Oyama, Y., Sakai, A., Sakuda, M., Sasaki, O., Echigo, S., Kohama, M., Suzuki, A.T., Haines, T.J., Blaufuss, E., Kim, B.K., and and others. Measurement of the Flux and Zenith-Angle Distribution of Upward Throughgoing Muons by Super-Kamiokande. United States: N. p., 1999. Web. doi:10.1103/PhysRevLett.82.2644.
Fukuda, Y., Hayakawa, T., Ichihara, E., Inoue, K., Ishihara, K., Ishino, H., Itow, Y., Kajita, T., Kameda, J., Kasuga, S., Kobayashi, K., Kobayashi, Y., Koshio, Y., Miura, M., Nakahata, M., Nakayama, S., Okada, A., Okumura, K., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Totsuka, Y., Yamada, S., Earl, M., Habig, A., Kearns, E., Messier, M.D., Scholberg, K., Stone, J.L., Sulak, L.R., Walter, C.W., Goldhaber, M., Barszczak, T., Casper, D., Gajewski, W., Kropp, W.R., Price, L.R., Reines, F., Smy, M., Sobel, H.W., Vagins, M.R., Haines, T.J., Kielczewska, D., Ganezer, K.S., Keig, W.E., Ellsworth, R.W., Tasaka, S., Flanagan, J.W., Kibayashi, A., Learned, J.G., Matsuno, S., Stenger, V.J., Takemori, D., Ishii, T., Kanzaki, J., Kobayashi, T., Mine, S., Nakamura, K., Nishikawa, K., Oyama, Y., Sakai, A., Sakuda, M., Sasaki, O., Echigo, S., Kohama, M., Suzuki, A.T., Haines, T.J., Blaufuss, E., Kim, B.K., & and others. Measurement of the Flux and Zenith-Angle Distribution of Upward Throughgoing Muons by Super-Kamiokande. United States. doi:10.1103/PhysRevLett.82.2644.
Fukuda, Y., Hayakawa, T., Ichihara, E., Inoue, K., Ishihara, K., Ishino, H., Itow, Y., Kajita, T., Kameda, J., Kasuga, S., Kobayashi, K., Kobayashi, Y., Koshio, Y., Miura, M., Nakahata, M., Nakayama, S., Okada, A., Okumura, K., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Totsuka, Y., Yamada, S., Earl, M., Habig, A., Kearns, E., Messier, M.D., Scholberg, K., Stone, J.L., Sulak, L.R., Walter, C.W., Goldhaber, M., Barszczak, T., Casper, D., Gajewski, W., Kropp, W.R., Price, L.R., Reines, F., Smy, M., Sobel, H.W., Vagins, M.R., Haines, T.J., Kielczewska, D., Ganezer, K.S., Keig, W.E., Ellsworth, R.W., Tasaka, S., Flanagan, J.W., Kibayashi, A., Learned, J.G., Matsuno, S., Stenger, V.J., Takemori, D., Ishii, T., Kanzaki, J., Kobayashi, T., Mine, S., Nakamura, K., Nishikawa, K., Oyama, Y., Sakai, A., Sakuda, M., Sasaki, O., Echigo, S., Kohama, M., Suzuki, A.T., Haines, T.J., Blaufuss, E., Kim, B.K., and and others. Mon . "Measurement of the Flux and Zenith-Angle Distribution of Upward Throughgoing Muons by Super-Kamiokande". United States. doi:10.1103/PhysRevLett.82.2644.
@article{osti_347043,
title = {Measurement of the Flux and Zenith-Angle Distribution of Upward Throughgoing Muons by Super-Kamiokande},
author = {Fukuda, Y. and Hayakawa, T. and Ichihara, E. and Inoue, K. and Ishihara, K. and Ishino, H. and Itow, Y. and Kajita, T. and Kameda, J. and Kasuga, S. and Kobayashi, K. and Kobayashi, Y. and Koshio, Y. and Miura, M. and Nakahata, M. and Nakayama, S. and Okada, A. and Okumura, K. and Sakurai, N. and Shiozawa, M. and Suzuki, Y. and Takeuchi, Y. and Totsuka, Y. and Yamada, S. and Earl, M. and Habig, A. and Kearns, E. and Messier, M.D. and Scholberg, K. and Stone, J.L. and Sulak, L.R. and Walter, C.W. and Goldhaber, M. and Barszczak, T. and Casper, D. and Gajewski, W. and Kropp, W.R. and Price, L.R. and Reines, F. and Smy, M. and Sobel, H.W. and Vagins, M.R. and Haines, T.J. and Kielczewska, D. and Ganezer, K.S. and Keig, W.E. and Ellsworth, R.W. and Tasaka, S. and Flanagan, J.W. and Kibayashi, A. and Learned, J.G. and Matsuno, S. and Stenger, V.J. and Takemori, D. and Ishii, T. and Kanzaki, J. and Kobayashi, T. and Mine, S. and Nakamura, K. and Nishikawa, K. and Oyama, Y. and Sakai, A. and Sakuda, M. and Sasaki, O. and Echigo, S. and Kohama, M. and Suzuki, A.T. and Haines, T.J. and Blaufuss, E. and Kim, B.K. and and others},
abstractNote = {A total of 614 upward throughgoing muons of minimum energy 1.6thinspthinspGeV are observed by Super-Kamiokande during 537 detector live days. The measured muon flux is [1.74{plus_minus}0.07(stat){plus_minus} 0.02(sys)]{times}10{sup {minus}13} cm{sup {minus}2}thinsps{sup {minus}1}thinspsr{sup {minus}1} compared to an expected flux of [1.97{plus_minus}0.44(theor)]{times} 10{sup {minus}13} cm{sup {minus}2}thinsps{sup {minus}1}thinspsr{sup {minus}1} . The absolute measured flux is in agreement with the prediction within the errors. However, the zenith-angle dependence of the observed upward throughgoing muon flux does not agree with no-oscillation predictions. The observed distortion in shape is consistent with the {nu}{sub {mu}}{leftrightarrow}{nu}{sub {tau}} oscillation hypothesis with sin{sup 2}thinsp2{theta} {gt}0.4 and 1{times}10{sup {minus}3}{lt}{Delta}m{sup 2}{lt}1{times}1 0{sup {minus}1} eV{sup 2} at 90{percent} confidence level. {copyright} {ital 1999} {ital The American Physical Society}},
doi = {10.1103/PhysRevLett.82.2644},
journal = {Physical Review Letters},
number = 13,
volume = 82,
place = {United States},
year = {1999},
month = {3}
}