First indication of terrestrial matter effects on solar neutrino oscillation

A. Renshaw, K. Abe, Y. Hayato, K. Iyogi, J. Kameda, Y. Kishimoto, M. Miura, S. Moriyama, M. Nakahata, Y. Nakano, S. Nakayama, H. Sekiya, M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takenaga, T. Tomura, K. Ueno, T. Yokozawa, R. A. Wendell & 95 others T. Irvine, T. Kajita, K. Kaneyuki, K. P. Lee, Yasuhiro Nishimura, K. Okumura, T. McLachlan, L. Labarga, S. Berkman, H. A. Tanaka, S. Tobayama, E. Kearns, J. L. Raaf, J. L. Stone, L. R. Sulak, M. Goldhabar, K. Bays, G. Carminati, W. R. Kropp, S. Mine, M. B. Smy, H. W. Sobel, K. S. Ganezer, J. Hill, W. E. Keig, N. Hong, J. Y. Kim, I. T. Lim, T. Akiri, A. Himmel, K. Scholberg, C. W. Walter, T. Wongjirad, T. Ishizuka, S. Tasaka, J. S. Jang, J. G. Learned, S. Matsuno, S. N. Smith, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T. Suzuki, Y. Takeuchi, C. Bronner, S. Hirota, K. Huang, K. Ieki, M. Ikeda, T. Kikawa, A. Minamino, T. Nakaya, K. Suzuki, S. Takahashi, Y. Fukuda, K. Choi, Y. Itow, G. Mitsuka, P. Mijakowski, J. Hignight, J. Imber, C. K. Jung, C. Yanagisawa, H. Ishino, A. Kibayashi, Y. Koshio, T. Mori, M. Sakuda, T. Yano, Y. Kuno, R. Tacik, S. B. Kim, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, Y. Totsuka, M. Yokoyama, K. Martens, Ll Marti, M. R. Vagins, J. F. Martin, P. De Perio, A. Konaka, M. J. Wilking, S. Chen, Y. Zhang, R. J. Wilkes

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

We report an indication that the elastic scattering rate of solar B8 neutrinos with electrons in the Super-Kamiokande detector is larger when the neutrinos pass through Earth during nighttime. We determine the day-night asymmetry, defined as the difference of the average day rate and average night rate divided by the average of those two rates, to be [-3.2±1.1(stat) ±0.5(syst)]%, which deviates from zero by 2.7σ. Since the elastic scattering process is mostly sensitive to electron-flavored solar neutrinos, a nonzero day-night asymmetry implies that the flavor oscillations of solar neutrinos are affected by the presence of matter within the neutrinos' flight path. Super-Kamiokande's day-night asymmetry is consistent with neutrino oscillations for 4×10-5 eV2≤Δm212≤7×10-5 eV2 and large mixing values of θ12, at the 68% C.L.

Original languageEnglish
Article number091805
JournalPhysical Review Letters
Volume112
Issue number9
DOIs
Publication statusPublished - 2014 Mar 7
Externally publishedYes

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solar neutrinos
night
indication
oscillations
neutrinos
asymmetry
elastic scattering
flight paths
electrons
detectors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Renshaw, A., Abe, K., Hayato, Y., Iyogi, K., Kameda, J., Kishimoto, Y., ... Wilkes, R. J. (2014). First indication of terrestrial matter effects on solar neutrino oscillation. Physical Review Letters, 112(9), [091805]. https://doi.org/10.1103/PhysRevLett.112.091805

First indication of terrestrial matter effects on solar neutrino oscillation. / Renshaw, A.; Abe, K.; Hayato, Y.; Iyogi, K.; Kameda, J.; Kishimoto, Y.; Miura, M.; Moriyama, S.; Nakahata, M.; Nakano, Y.; Nakayama, S.; Sekiya, H.; Shiozawa, M.; Suzuki, Y.; Takeda, A.; Takenaga, Y.; Tomura, T.; Ueno, K.; Yokozawa, T.; Wendell, R. A.; Irvine, T.; Kajita, T.; Kaneyuki, K.; Lee, K. P.; Nishimura, Yasuhiro; Okumura, K.; McLachlan, T.; Labarga, L.; Berkman, S.; Tanaka, H. A.; Tobayama, S.; Kearns, E.; Raaf, J. L.; Stone, J. L.; Sulak, L. R.; Goldhabar, M.; Bays, K.; Carminati, G.; Kropp, W. R.; Mine, S.; Smy, M. B.; Sobel, H. W.; Ganezer, K. S.; Hill, J.; Keig, W. E.; Hong, N.; Kim, J. Y.; Lim, I. T.; Akiri, T.; Himmel, A.; Scholberg, K.; Walter, C. W.; Wongjirad, T.; Ishizuka, T.; Tasaka, S.; Jang, J. S.; Learned, J. G.; Matsuno, S.; Smith, S. N.; Hasegawa, T.; Ishida, T.; Ishii, T.; Kobayashi, T.; Nakadaira, T.; Nakamura, K.; Oyama, Y.; Sakashita, K.; Sekiguchi, T.; Tsukamoto, T.; Suzuki, A. T.; Takeuchi, Y.; Bronner, C.; Hirota, S.; Huang, K.; Ieki, K.; Ikeda, M.; Kikawa, T.; Minamino, A.; Nakaya, T.; Suzuki, K.; Takahashi, S.; Fukuda, Y.; Choi, K.; Itow, Y.; Mitsuka, G.; Mijakowski, P.; Hignight, J.; Imber, J.; Jung, C. K.; Yanagisawa, C.; Ishino, H.; Kibayashi, A.; Koshio, Y.; Mori, T.; Sakuda, M.; Yano, T.; Kuno, Y.; Tacik, R.; Kim, S. B.; Okazawa, H.; Choi, Y.; Nishijima, K.; Koshiba, M.; Totsuka, Y.; Yokoyama, M.; Martens, K.; Marti, Ll; Vagins, M. R.; Martin, J. F.; De Perio, P.; Konaka, A.; Wilking, M. J.; Chen, S.; Zhang, Y.; Wilkes, R. J.

In: Physical Review Letters, Vol. 112, No. 9, 091805, 07.03.2014.

Research output: Contribution to journalArticle

Renshaw, A, Abe, K, Hayato, Y, Iyogi, K, Kameda, J, Kishimoto, Y, Miura, M, Moriyama, S, Nakahata, M, Nakano, Y, Nakayama, S, Sekiya, H, Shiozawa, M, Suzuki, Y, Takeda, A, Takenaga, Y, Tomura, T, Ueno, K, Yokozawa, T, Wendell, RA, Irvine, T, Kajita, T, Kaneyuki, K, Lee, KP, Nishimura, Y, Okumura, K, McLachlan, T, Labarga, L, Berkman, S, Tanaka, HA, Tobayama, S, Kearns, E, Raaf, JL, Stone, JL, Sulak, LR, Goldhabar, M, Bays, K, Carminati, G, Kropp, WR, Mine, S, Smy, MB, Sobel, HW, Ganezer, KS, Hill, J, Keig, WE, Hong, N, Kim, JY, Lim, IT, Akiri, T, Himmel, A, Scholberg, K, Walter, CW, Wongjirad, T, Ishizuka, T, Tasaka, S, Jang, JS, Learned, JG, Matsuno, S, Smith, SN, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Suzuki, AT, Takeuchi, Y, Bronner, C, Hirota, S, Huang, K, Ieki, K, Ikeda, M, Kikawa, T, Minamino, A, Nakaya, T, Suzuki, K, Takahashi, S, Fukuda, Y, Choi, K, Itow, Y, Mitsuka, G, Mijakowski, P, Hignight, J, Imber, J, Jung, CK, Yanagisawa, C, Ishino, H, Kibayashi, A, Koshio, Y, Mori, T, Sakuda, M, Yano, T, Kuno, Y, Tacik, R, Kim, SB, Okazawa, H, Choi, Y, Nishijima, K, Koshiba, M, Totsuka, Y, Yokoyama, M, Martens, K, Marti, L, Vagins, MR, Martin, JF, De Perio, P, Konaka, A, Wilking, MJ, Chen, S, Zhang, Y & Wilkes, RJ 2014, 'First indication of terrestrial matter effects on solar neutrino oscillation', Physical Review Letters, vol. 112, no. 9, 091805. https://doi.org/10.1103/PhysRevLett.112.091805
Renshaw A, Abe K, Hayato Y, Iyogi K, Kameda J, Kishimoto Y et al. First indication of terrestrial matter effects on solar neutrino oscillation. Physical Review Letters. 2014 Mar 7;112(9). 091805. https://doi.org/10.1103/PhysRevLett.112.091805
Renshaw, A. ; Abe, K. ; Hayato, Y. ; Iyogi, K. ; Kameda, J. ; Kishimoto, Y. ; Miura, M. ; Moriyama, S. ; Nakahata, M. ; Nakano, Y. ; Nakayama, S. ; Sekiya, H. ; Shiozawa, M. ; Suzuki, Y. ; Takeda, A. ; Takenaga, Y. ; Tomura, T. ; Ueno, K. ; Yokozawa, T. ; Wendell, R. A. ; Irvine, T. ; Kajita, T. ; Kaneyuki, K. ; Lee, K. P. ; Nishimura, Yasuhiro ; Okumura, K. ; McLachlan, T. ; Labarga, L. ; Berkman, S. ; Tanaka, H. A. ; Tobayama, S. ; Kearns, E. ; Raaf, J. L. ; Stone, J. L. ; Sulak, L. R. ; Goldhabar, M. ; Bays, K. ; Carminati, G. ; Kropp, W. R. ; Mine, S. ; Smy, M. B. ; Sobel, H. W. ; Ganezer, K. S. ; Hill, J. ; Keig, W. E. ; Hong, N. ; Kim, J. Y. ; Lim, I. T. ; Akiri, T. ; Himmel, A. ; Scholberg, K. ; Walter, C. W. ; Wongjirad, T. ; Ishizuka, T. ; Tasaka, S. ; Jang, J. S. ; Learned, J. G. ; Matsuno, S. ; Smith, S. N. ; Hasegawa, T. ; Ishida, T. ; Ishii, T. ; Kobayashi, T. ; Nakadaira, T. ; Nakamura, K. ; Oyama, Y. ; Sakashita, K. ; Sekiguchi, T. ; Tsukamoto, T. ; Suzuki, A. T. ; Takeuchi, Y. ; Bronner, C. ; Hirota, S. ; Huang, K. ; Ieki, K. ; Ikeda, M. ; Kikawa, T. ; Minamino, A. ; Nakaya, T. ; Suzuki, K. ; Takahashi, S. ; Fukuda, Y. ; Choi, K. ; Itow, Y. ; Mitsuka, G. ; Mijakowski, P. ; Hignight, J. ; Imber, J. ; Jung, C. K. ; Yanagisawa, C. ; Ishino, H. ; Kibayashi, A. ; Koshio, Y. ; Mori, T. ; Sakuda, M. ; Yano, T. ; Kuno, Y. ; Tacik, R. ; Kim, S. B. ; Okazawa, H. ; Choi, Y. ; Nishijima, K. ; Koshiba, M. ; Totsuka, Y. ; Yokoyama, M. ; Martens, K. ; Marti, Ll ; Vagins, M. R. ; Martin, J. F. ; De Perio, P. ; Konaka, A. ; Wilking, M. J. ; Chen, S. ; Zhang, Y. ; Wilkes, R. J. / First indication of terrestrial matter effects on solar neutrino oscillation. In: Physical Review Letters. 2014 ; Vol. 112, No. 9.
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title = "First indication of terrestrial matter effects on solar neutrino oscillation",
abstract = "We report an indication that the elastic scattering rate of solar B8 neutrinos with electrons in the Super-Kamiokande detector is larger when the neutrinos pass through Earth during nighttime. We determine the day-night asymmetry, defined as the difference of the average day rate and average night rate divided by the average of those two rates, to be [-3.2±1.1(stat) ±0.5(syst)]{\%}, which deviates from zero by 2.7σ. Since the elastic scattering process is mostly sensitive to electron-flavored solar neutrinos, a nonzero day-night asymmetry implies that the flavor oscillations of solar neutrinos are affected by the presence of matter within the neutrinos' flight path. Super-Kamiokande's day-night asymmetry is consistent with neutrino oscillations for 4×10-5 eV2≤Δm212≤7×10-5 eV2 and large mixing values of θ12, at the 68{\%} C.L.",
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 Wendell, {R. A.} and T. Irvine and T. Kajita and K. Kaneyuki and Lee, {K. P.} and Yasuhiro Nishimura and K. Okumura and T. McLachlan and L. Labarga and S. Berkman and Tanaka, {H. A.} and S. Tobayama and E. Kearns and Raaf, {J. L.} and Stone, {J. L.} and Sulak, {L. R.} and M. Goldhabar and K. Bays and G. Carminati and Kropp, {W. R.} and S. Mine and Smy, {M. B.} and Sobel, {H. W.} and Ganezer, {K. S.} and J. Hill and Keig, {W. E.} and N. Hong and Kim, {J. Y.} and Lim, {I. T.} and T. Akiri and A. Himmel and K. Scholberg and Walter, {C. W.} and T. Wongjirad and T. Ishizuka and S. Tasaka and Jang, {J. S.} and Learned, {J. G.} and S. Matsuno and Smith, {S. N.} 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 Suzuki, {A. T.} 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 Jung, {C. K.} 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 Kim, {S. B.} 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 Vagins, {M. R.} and Martin, {J. F.} and {De Perio}, P. and A. Konaka and Wilking, {M. J.} and S. Chen and Y. Zhang and Wilkes, {R. J.}",
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T1 - First indication of terrestrial matter effects on solar neutrino oscillation

AU - Renshaw, A.

AU - Abe, K.

AU - Hayato, Y.

AU - Iyogi, K.

AU - Kameda, J.

AU - Kishimoto, Y.

AU - Miura, M.

AU - Moriyama, S.

AU - Nakahata, M.

AU - Nakano, Y.

AU - Nakayama, S.

AU - Sekiya, H.

AU - Shiozawa, M.

AU - Suzuki, Y.

AU - Takeda, A.

AU - Takenaga, Y.

AU - Tomura, T.

AU - Ueno, K.

AU - Yokozawa, T.

AU - Wendell, R. A.

AU - Irvine, T.

AU - Kajita, T.

AU - Kaneyuki, K.

AU - Lee, K. P.

AU - Nishimura, Yasuhiro

AU - Okumura, K.

AU - McLachlan, T.

AU - Labarga, L.

AU - Berkman, S.

AU - Tanaka, H. A.

AU - Tobayama, S.

AU - Kearns, E.

AU - Raaf, J. L.

AU - Stone, J. L.

AU - Sulak, L. R.

AU - Goldhabar, M.

AU - Bays, K.

AU - Carminati, G.

AU - Kropp, W. R.

AU - Mine, S.

AU - Smy, M. B.

AU - Sobel, H. W.

AU - Ganezer, K. S.

AU - Hill, J.

AU - Keig, W. E.

AU - Hong, N.

AU - Kim, J. Y.

AU - Lim, I. T.

AU - Akiri, T.

AU - Himmel, A.

AU - Scholberg, K.

AU - Walter, C. W.

AU - Wongjirad, T.

AU - Ishizuka, T.

AU - Tasaka, S.

AU - Jang, J. S.

AU - Learned, J. G.

AU - Matsuno, S.

AU - Smith, S. N.

AU - Hasegawa, T.

AU - Ishida, T.

AU - Ishii, T.

AU - Kobayashi, T.

AU - Nakadaira, T.

AU - Nakamura, K.

AU - Oyama, Y.

AU - Sakashita, K.

AU - Sekiguchi, T.

AU - Tsukamoto, T.

AU - Suzuki, A. T.

AU - Takeuchi, Y.

AU - Bronner, C.

AU - Hirota, S.

AU - Huang, K.

AU - Ieki, K.

AU - Ikeda, M.

AU - Kikawa, T.

AU - Minamino, A.

AU - Nakaya, T.

AU - Suzuki, K.

AU - Takahashi, S.

AU - Fukuda, Y.

AU - Choi, K.

AU - Itow, Y.

AU - Mitsuka, G.

AU - Mijakowski, P.

AU - Hignight, J.

AU - Imber, J.

AU - Jung, C. K.

AU - Yanagisawa, C.

AU - Ishino, H.

AU - Kibayashi, A.

AU - Koshio, Y.

AU - Mori, T.

AU - Sakuda, M.

AU - Yano, T.

AU - Kuno, Y.

AU - Tacik, R.

AU - Kim, S. B.

AU - Okazawa, H.

AU - Choi, Y.

AU - Nishijima, K.

AU - Koshiba, M.

AU - Totsuka, Y.

AU - Yokoyama, M.

AU - Martens, K.

AU - Marti, Ll

AU - Vagins, M. R.

AU - Martin, J. F.

AU - De Perio, P.

AU - Konaka, A.

AU - Wilking, M. J.

AU - Chen, S.

AU - Zhang, Y.

AU - Wilkes, R. J.

PY - 2014/3/7

Y1 - 2014/3/7

N2 - We report an indication that the elastic scattering rate of solar B8 neutrinos with electrons in the Super-Kamiokande detector is larger when the neutrinos pass through Earth during nighttime. We determine the day-night asymmetry, defined as the difference of the average day rate and average night rate divided by the average of those two rates, to be [-3.2±1.1(stat) ±0.5(syst)]%, which deviates from zero by 2.7σ. Since the elastic scattering process is mostly sensitive to electron-flavored solar neutrinos, a nonzero day-night asymmetry implies that the flavor oscillations of solar neutrinos are affected by the presence of matter within the neutrinos' flight path. Super-Kamiokande's day-night asymmetry is consistent with neutrino oscillations for 4×10-5 eV2≤Δm212≤7×10-5 eV2 and large mixing values of θ12, at the 68% C.L.

AB - We report an indication that the elastic scattering rate of solar B8 neutrinos with electrons in the Super-Kamiokande detector is larger when the neutrinos pass through Earth during nighttime. We determine the day-night asymmetry, defined as the difference of the average day rate and average night rate divided by the average of those two rates, to be [-3.2±1.1(stat) ±0.5(syst)]%, which deviates from zero by 2.7σ. Since the elastic scattering process is mostly sensitive to electron-flavored solar neutrinos, a nonzero day-night asymmetry implies that the flavor oscillations of solar neutrinos are affected by the presence of matter within the neutrinos' flight path. Super-Kamiokande's day-night asymmetry is consistent with neutrino oscillations for 4×10-5 eV2≤Δm212≤7×10-5 eV2 and large mixing values of θ12, at the 68% C.L.

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