Observation of the East-West anisotropy of the atmospheric neutrino flux

T. Futagami; Y. Fukuda; T. Hayakawa; K. Inoue; K. Ishihara; H. Ishino; Y. Itow; T. Kajita; J. Kameda; S. Kasuga; K. Kobayashi; Y. Kobayashi; Y. Koshio; M. Miura; M. Nakahata; S. Nakayama; Y. Obayashi; A. Okada; K. Okumura; N. Sakurai; M. Shiozawa; Y. Suzuki; H. Takeuchi; Y. Takeuchi; Y. Totsuka; S. Yamada; M. Earl; A. Habig; E. Kearns; M. D. Messier; K. Scholberg; J. L. Stone; L. R. Sulak; C. W. Walter; M. Goldhaber; T. Barszczak; D. Casper; W. Gajewski; W. R. Kropp; S. Mine; L. R. Price; M. Smy; H. W. Sobel; M. R. Vagins; K. S. Ganezer; W. E. Keig; R. W. Ellsworth; S. Tasaka; A. Kibayashi; J. G. Learned; S. Matsuno; V. J. Stenger; D. Takemori; T. Ishii; J. Kanzaki; T. Kobayashi; K. Nakamura; K. Nishikawa; Y. Oyama; A. Sakai; M. Sakuda; O. Sasaki; S. Echigo; M. Kohama; A. T. Suzuki; T. J. Haines; E. Blaufuss; B. K. Kim; R. Sanford; R. Svoboda; M. L. Chen; J. A. Goodman; G. W. Sullivan; J. Hill; C. K. Jung; K. Martens; C. Mauger; C. McGrew; E. Sharkey; B. Viren; C. Yanagisawa; W. Doki; M. Kirisawa; S. Inaba; K. Miyano; H. Okazawa; C. Saji; M. Takahashi; M. Takahata; K. Higuchi; Y. Nagashima; M. Takita; T. Yamaguchi; M. Yoshida; S. B. Kim; M. Etoh; A. Hasegawa; T. Hasegawa; S. Hatakeyama; T. Iwamoto; M. Koga; T. Maruyama; H. Ogawa; J. Shirai; A. Suzuki; F. Tsushima; M. Koshiba; Y. Hatakeyama; M. Koike; M. Nemoto; K. Nishijima; H. Fujiyasu; Y. Hayato; Y. Kanaya; K. Kaneyuki; Y. Watanabe; D. Kielczewska; J. S. George; A. L. Stachyra; L. L. Wai; R. J. Wilkes; K. K. Young

doi:10.1103/PhysRevLett.82.5194

Observation of the East-West anisotropy of the atmospheric neutrino flux

T. Futagami, Y. Fukuda, T. Hayakawa, K. Inoue, K. Ishihara, H. Ishino, Y. Itow, T. Kajita, J. Kameda, S. Kasuga, K. Kobayashi, Y. Kobayashi, Y. Koshio, M. Miura, M. Nakahata, S. Nakayama, Y. Obayashi, A. Okada, K. Okumura, N. SakuraiM. Shiozawa, Y. Suzuki, H. Takeuchi, Y. Takeuchi, Y. Totsuka, S. Yamada, M. Earl, A. Habig, E. Kearns, M. D. Messier, K. Scholberg, J. L. Stone, L. R. Sulak, C. W. Walter, M. Goldhaber, T. Barszczak, D. Casper, W. Gajewski, W. R. Kropp, S. Mine, L. R. Price, M. Smy, H. W. Sobel, M. R. Vagins, K. S. Ganezer, W. E. Keig, R. W. Ellsworth, S. Tasaka, A. Kibayashi, J. G. Learned, S. Matsuno, V. J. Stenger, D. Takemori, T. Ishii, J. Kanzaki, T. Kobayashi, K. Nakamura, K. Nishikawa, Y. Oyama, A. Sakai, M. Sakuda, O. Sasaki, S. Echigo, M. Kohama, A. T. Suzuki, T. J. Haines, E. Blaufuss, B. K. Kim, R. Sanford, R. Svoboda, M. L. Chen, J. A. Goodman, G. W. Sullivan, J. Hill, C. K. Jung, K. Martens, C. Mauger, C. McGrew, E. Sharkey, B. Viren, C. Yanagisawa, W. Doki, M. Kirisawa, S. Inaba, K. Miyano, H. Okazawa, C. Saji, M. Takahashi, M. Takahata, K. Higuchi, Y. Nagashima, M. Takita, T. Yamaguchi, M. Yoshida, S. B. Kim, M. Etoh, A. Hasegawa, T. Hasegawa, S. Hatakeyama, T. Iwamoto, M. Koga, T. Maruyama, H. Ogawa, J. Shirai, A. Suzuki, F. Tsushima, M. Koshiba, Y. Hatakeyama, M. Koike, M. Nemoto, K. Nishijima, H. Fujiyasu, Y. Hayato, Y. Kanaya, K. Kaneyuki, Y. Watanabe, D. Kielczewska, J. S. George, A. L. Stachyra, L. L. Wai, R. J. Wilkes, K. K. Young

Physics & Astronomy (Duluth)

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Abstract

The east-west anisotropy, caused by the deflection of primary cosmic rays in the Earth's magnetic field, is observed for the first time in the flux of atmospheric neutrinos. Using a 45 kt yr exposure of the Super-Kamiokande detector, 552 e-like and 633 μ-like horizontally going events are selected in the momentum range between 400 and 3000 MeV/c. The azimuthal distributions of e-like and μ-like events agree with the expectation from atmospheric neutrino flux calculations, verifying that the flux of atmospheric neutrinos in the GeV energy range is reasonably well modeled by calculations that account for the geomagnetic field.

Original language	English (US)
Pages (from-to)	5194-5197
Number of pages	4
Journal	Physical review letters
Volume	82
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.82.5194
State	Published - 1999

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10.1103/PhysRevLett.82.5194

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Futagami, T., Fukuda, Y., Hayakawa, T., 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., Obayashi, Y., Okada, A., Okumura, K., ... Young, K. K. (1999). Observation of the East-West anisotropy of the atmospheric neutrino flux. Physical review letters, 82(26), 5194-5197. https://doi.org/10.1103/PhysRevLett.82.5194

Futagami, T, Fukuda, Y, Hayakawa, T, 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, Obayashi, Y, Okada, A, Okumura, K, Sakurai, N, Shiozawa, M, Suzuki, Y, Takeuchi, H, Takeuchi, Y, Totsuka, Y, Yamada, S, Earl, M, Habig, A, Kearns, E, Messier, MD, Scholberg, K, Stone, JL, Sulak, LR, Walter, CW, Goldhaber, M, Barszczak, T, Casper, D, Gajewski, W, Kropp, WR, Mine, S, Price, LR, Smy, M, Sobel, HW, Vagins, MR, Ganezer, KS, Keig, WE, Ellsworth, RW, Tasaka, S, Kibayashi, A, Learned, JG, Matsuno, S, Stenger, VJ, Takemori, D, Ishii, T, Kanzaki, J, Kobayashi, T, Nakamura, K, Nishikawa, K, Oyama, Y, Sakai, A, Sakuda, M, Sasaki, O, Echigo, S, Kohama, M, Suzuki, AT, Haines, TJ, Blaufuss, E, Kim, BK, Sanford, R, Svoboda, R, Chen, ML, Goodman, JA, Sullivan, GW, Hill, J, Jung, CK, Martens, K, Mauger, C, McGrew, C, Sharkey, E, Viren, B, Yanagisawa, C, Doki, W, Kirisawa, M, Inaba, S, Miyano, K, Okazawa, H, Saji, C, Takahashi, M, Takahata, M, Higuchi, K, Nagashima, Y, Takita, M, Yamaguchi, T, Yoshida, M, Kim, SB, Etoh, M, Hasegawa, A, Hasegawa, T, Hatakeyama, S, Iwamoto, T, Koga, M, Maruyama, T, Ogawa, H, Shirai, J, Suzuki, A, Tsushima, F, Koshiba, M, Hatakeyama, Y, Koike, M, Nemoto, M, Nishijima, K, Fujiyasu, H, Hayato, Y, Kanaya, Y, Kaneyuki, K, Watanabe, Y, Kielczewska, D, George, JS, Stachyra, AL, Wai, LL, Wilkes, RJ & Young, KK 1999, 'Observation of the East-West anisotropy of the atmospheric neutrino flux', Physical review letters, vol. 82, no. 26, pp. 5194-5197. https://doi.org/10.1103/PhysRevLett.82.5194

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title = "Observation of the East-West anisotropy of the atmospheric neutrino flux",

abstract = "The east-west anisotropy, caused by the deflection of primary cosmic rays in the Earth's magnetic field, is observed for the first time in the flux of atmospheric neutrinos. Using a 45 kt yr exposure of the Super-Kamiokande detector, 552 e-like and 633 μ-like horizontally going events are selected in the momentum range between 400 and 3000 MeV/c. The azimuthal distributions of e-like and μ-like events agree with the expectation from atmospheric neutrino flux calculations, verifying that the flux of atmospheric neutrinos in the GeV energy range is reasonably well modeled by calculations that account for the geomagnetic field.",

author = "T. Futagami and Y. Fukuda and T. Hayakawa and K. Inoue and K. Ishihara and H. Ishino and Y. Itow and T. Kajita and J. Kameda and S. Kasuga and K. Kobayashi and Y. Kobayashi and Y. Koshio and M. Miura and M. Nakahata and S. Nakayama and Y. Obayashi and A. Okada and K. Okumura and N. Sakurai and M. Shiozawa and Y. Suzuki and H. Takeuchi and Y. Takeuchi and Y. Totsuka and S. Yamada and M. Earl and A. Habig and E. Kearns and Messier, {M. D.} and K. Scholberg and Stone, {J. L.} and Sulak, {L. R.} and Walter, {C. W.} and M. Goldhaber and T. Barszczak and D. Casper and W. Gajewski and Kropp, {W. R.} and S. Mine and Price, {L. R.} and M. Smy and Sobel, {H. W.} and Vagins, {M. R.} and Ganezer, {K. S.} and Keig, {W. E.} and Ellsworth, {R. W.} and S. Tasaka and A. Kibayashi and Learned, {J. G.} and S. Matsuno and Stenger, {V. J.} and D. Takemori and T. Ishii and J. Kanzaki and T. Kobayashi and K. Nakamura and K. Nishikawa and Y. Oyama and A. Sakai and M. Sakuda and O. Sasaki and S. Echigo and M. Kohama and Suzuki, {A. T.} and Haines, {T. J.} and E. Blaufuss and Kim, {B. K.} and R. Sanford and R. Svoboda and Chen, {M. L.} and Goodman, {J. A.} and Sullivan, {G. W.} and J. Hill and Jung, {C. K.} and K. Martens and C. Mauger and C. McGrew and E. Sharkey and B. Viren and C. Yanagisawa and W. Doki and M. Kirisawa and S. Inaba and K. Miyano and H. Okazawa and C. Saji and M. Takahashi and M. Takahata and K. Higuchi and Y. Nagashima and M. Takita and T. Yamaguchi and M. Yoshida and Kim, {S. B.} and M. Etoh and A. Hasegawa and T. Hasegawa and S. Hatakeyama and T. Iwamoto and M. Koga and T. Maruyama and H. Ogawa and J. Shirai and A. Suzuki and F. Tsushima and M. Koshiba and Y. Hatakeyama and M. Koike and M. Nemoto and K. Nishijima and H. Fujiyasu and Y. Hayato and Y. Kanaya and K. Kaneyuki and Y. Watanabe and D. Kielczewska and George, {J. S.} and Stachyra, {A. L.} and Wai, {L. L.} and Wilkes, {R. J.} and Young, {K. K.}",

year = "1999",

doi = "10.1103/PhysRevLett.82.5194",

language = "English (US)",

volume = "82",

pages = "5194--5197",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "26",

}

TY - JOUR

T1 - Observation of the East-West anisotropy of the atmospheric neutrino flux

AU - Futagami, T.

AU - Fukuda, Y.

AU - Hayakawa, T.

AU - Inoue, K.

AU - Ishihara, K.

AU - Ishino, H.

AU - Itow, Y.

AU - Kajita, T.

AU - Kameda, J.

AU - Kasuga, S.

AU - Kobayashi, K.

AU - Kobayashi, Y.

AU - Koshio, Y.

AU - Miura, M.

AU - Nakahata, M.

AU - Nakayama, S.

AU - Obayashi, Y.

AU - Okada, A.

AU - Okumura, K.

AU - Sakurai, N.

AU - Shiozawa, M.

AU - Suzuki, Y.

AU - Takeuchi, H.

AU - Takeuchi, Y.

AU - Totsuka, Y.

AU - Yamada, S.

AU - Earl, M.

AU - Habig, A.

AU - Kearns, E.

AU - Messier, M. D.

AU - Scholberg, K.

AU - Stone, J. L.

AU - Sulak, L. R.

AU - Walter, C. W.

AU - Goldhaber, M.

AU - Barszczak, T.

AU - Casper, D.

AU - Gajewski, W.

AU - Kropp, W. R.

AU - Mine, S.

AU - Price, L. R.

AU - Smy, M.

AU - Sobel, H. W.

AU - Vagins, M. R.

AU - Ganezer, K. S.

AU - Keig, W. E.

AU - Ellsworth, R. W.

AU - Tasaka, S.

AU - Kibayashi, A.

AU - Learned, J. G.

AU - Matsuno, S.

AU - Stenger, V. J.

AU - Takemori, D.

AU - Ishii, T.

AU - Kanzaki, J.

AU - Kobayashi, T.

AU - Nakamura, K.

AU - Nishikawa, K.

AU - Oyama, Y.

AU - Sakai, A.

AU - Sakuda, M.

AU - Sasaki, O.

AU - Echigo, S.

AU - Kohama, M.

AU - Suzuki, A. T.

AU - Haines, T. J.

AU - Blaufuss, E.

AU - Kim, B. K.

AU - Sanford, R.

AU - Svoboda, R.

AU - Chen, M. L.

AU - Goodman, J. A.

AU - Sullivan, G. W.

AU - Hill, J.

AU - Jung, C. K.

AU - Martens, K.

AU - Mauger, C.

AU - McGrew, C.

AU - Sharkey, E.

AU - Viren, B.

AU - Yanagisawa, C.

AU - Doki, W.

AU - Kirisawa, M.

AU - Inaba, S.

AU - Miyano, K.

AU - Okazawa, H.

AU - Saji, C.

AU - Takahashi, M.

AU - Takahata, M.

AU - Higuchi, K.

AU - Nagashima, Y.

AU - Takita, M.

AU - Yamaguchi, T.

AU - Yoshida, M.

AU - Kim, S. B.

AU - Etoh, M.

AU - Hasegawa, A.

AU - Hasegawa, T.

AU - Hatakeyama, S.

AU - Iwamoto, T.

AU - Koga, M.

AU - Maruyama, T.

AU - Ogawa, H.

AU - Shirai, J.

AU - Suzuki, A.

AU - Tsushima, F.

AU - Koshiba, M.

AU - Hatakeyama, Y.

AU - Koike, M.

AU - Nemoto, M.

AU - Nishijima, K.

AU - Fujiyasu, H.

AU - Hayato, Y.

AU - Kanaya, Y.

AU - Kaneyuki, K.

AU - Watanabe, Y.

AU - Kielczewska, D.

AU - George, J. S.

AU - Stachyra, A. L.

AU - Wai, L. L.

AU - Wilkes, R. J.

AU - Young, K. K.

PY - 1999

Y1 - 1999

N2 - The east-west anisotropy, caused by the deflection of primary cosmic rays in the Earth's magnetic field, is observed for the first time in the flux of atmospheric neutrinos. Using a 45 kt yr exposure of the Super-Kamiokande detector, 552 e-like and 633 μ-like horizontally going events are selected in the momentum range between 400 and 3000 MeV/c. The azimuthal distributions of e-like and μ-like events agree with the expectation from atmospheric neutrino flux calculations, verifying that the flux of atmospheric neutrinos in the GeV energy range is reasonably well modeled by calculations that account for the geomagnetic field.

AB - The east-west anisotropy, caused by the deflection of primary cosmic rays in the Earth's magnetic field, is observed for the first time in the flux of atmospheric neutrinos. Using a 45 kt yr exposure of the Super-Kamiokande detector, 552 e-like and 633 μ-like horizontally going events are selected in the momentum range between 400 and 3000 MeV/c. The azimuthal distributions of e-like and μ-like events agree with the expectation from atmospheric neutrino flux calculations, verifying that the flux of atmospheric neutrinos in the GeV energy range is reasonably well modeled by calculations that account for the geomagnetic field.

UR - http://www.scopus.com/inward/record.url?scp=16644366588&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=16644366588&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.82.5194

DO - 10.1103/PhysRevLett.82.5194

M3 - Article

AN - SCOPUS:16644366588

SN - 0031-9007

VL - 82

SP - 5194

EP - 5197

JO - Physical review letters

JF - Physical review letters

IS - 26

ER -

Observation of the East-West anisotropy of the atmospheric neutrino flux

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