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Abe K, Hayato Y, Iida T, Iyogi K, Kameda J, Koshio Y, Kozuma Y, Marti L, Miura M, Moriyama S, Nakahata M, Nakayama S, Obayashi Y, Sekiya H, Shiozawa M, Suzuki Y, Takeda A, Takenaga Y, Ueno K, Ueshima K, Yamada S, Yokozawa T, Ishihara C, Kaji H, Kajita T, Kaneyuki K, Lee KP, McLachlan T, Okumura K, Shimizu Y, Tanimoto N, Labarga L, Kearns E, Litos M, Raaf JL, Stone JL, Sulak LR, Goldhaber M, Bays K, Kropp WR, Mine S, Regis C, Renshaw A, Smy MB, Sobel HW, Ganezer KS, Hill J, Keig WE, Jang JS, Kim JY, Lim IT, Albert JB, Scholberg K, Walter CW, Wendell R, Wongjirad TM, Ishizuka T, Tasaka S, Learned JG, Matsuno S, Smith SN, Hasegawa T, Ishida T, Ishii T, Kobayashi T, Nakadaira T, Nakamura K, Nishikawa K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Suzuki AT, Takeuchi Y, Ikeda M, Minamino A, Nakaya T, Fukuda Y, Itow Y, Mitsuka G, Tanaka T, Jung CK, Lopez GD, Taylor I, Yanagisawa C, Ishino H, Kibayashi A, Mino S, Mori T, Sakuda M, Toyota H, Kuno Y, Yoshida M, Kim SB, Yang BS, Okazawa H, Choi Y, Nishijima K, Koshiba M, Yokoyama M, Totsuka Y, Martens K, Schuemann J, Vagins MR, Chen S, Heng Y, Yang Z, Zhang H, Kielczewska D, Mijakowski P, Connolly K, Dziomba M, Thrane E, Wilkes RJ. Search for nucleon decay via n→ν[over ¯]π0 and p→ν[over ¯]π+ in Super-Kamiokande. Phys Rev Lett 2014; 113:121802. [PMID: 25279622 DOI: 10.1103/physrevlett.113.121802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Indexed: 06/03/2023]
Abstract
We present the results of searches for nucleon decay via n→ν[over ¯]π0 and p→ν[over ¯]π+ using data from a combined 172.8 kt·yr exposure of Super-Kamiokande-I,-II, and-III. We set lower limits on the partial lifetime for each of these modes: τn→ν[over ¯]π0>1.1×10(33) years and τp→ν[over ¯]π+>3.9×10(32) years at a 90% confidence level.
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Affiliation(s)
- K Abe
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Hayato
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - T Iida
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - K Iyogi
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - J Kameda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Koshio
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Kozuma
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - Ll Marti
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - M Miura
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - S Moriyama
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M Nakahata
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - S Nakayama
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Obayashi
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - H Sekiya
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M Shiozawa
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Suzuki
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - A Takeda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Takenaga
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - K Ueno
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - K Ueshima
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - S Yamada
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - T Yokozawa
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - C Ishihara
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - H Kaji
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T Kajita
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - K Kaneyuki
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - K P Lee
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T McLachlan
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Okumura
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Shimizu
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - N Tanimoto
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - L Labarga
- Department of Theoretical Physics, University Autonoma Madrid, 28049 Madrid, Spain
| | - E Kearns
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M Litos
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - J L Raaf
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - J L Stone
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - L R Sulak
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - M Goldhaber
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Bays
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - W R Kropp
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - S Mine
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - C Regis
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - A Renshaw
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - M B Smy
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - H W Sobel
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - K S Ganezer
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - J Hill
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - W E Keig
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - J S Jang
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - J Y Kim
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - I T Lim
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - J B Albert
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - K Scholberg
- Department of Physics, Duke University, Durham, North Carolina 27708, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - C W Walter
- Department of Physics, Duke University, Durham, North Carolina 27708, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - R Wendell
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - T M Wongjirad
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - T Ishizuka
- Junior College, Fukuoka Institute of Technology, Fukuoka 811-0214, Japan
| | - S Tasaka
- Information and Multimedia Center, Gifu University, Gifu, Gifu 501-1193, Japan
| | - J G Learned
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S Matsuno
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S N Smith
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - T Hasegawa
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Ishida
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Ishii
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Kobayashi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Nakadaira
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Nakamura
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - K Nishikawa
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Y Oyama
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Sakashita
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Sekiguchi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Tsukamoto
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - A T Suzuki
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Y Takeuchi
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M Ikeda
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - A Minamino
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - T Nakaya
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Fukuda
- Department of Physics, Miyagi University of Education, Sendai, Miyagi 980-0845, Japan
| | - Y Itow
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan and Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - G Mitsuka
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - T Tanaka
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - C K Jung
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
| | - G D Lopez
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
| | - I Taylor
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
| | - C Yanagisawa
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
| | - H Ishino
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - A Kibayashi
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - S Mino
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - T Mori
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - M Sakuda
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - H Toyota
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - Y Kuno
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Yoshida
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S B Kim
- Department of Physics, Seoul National University, Seoul 151-742, Korea
| | - B S Yang
- Department of Physics, Seoul National University, Seoul 151-742, Korea
| | - H Okazawa
- Department of Informatics in Social Welfare, Shizuoka University of Welfare, Yaizu, Shizuoka, 425-8611, Japan
| | - Y Choi
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - K Nishijima
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - M Koshiba
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - M Yokoyama
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Totsuka
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - K Martens
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - J Schuemann
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M R Vagins
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - S Chen
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Y Heng
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Z Yang
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - H Zhang
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - D Kielczewska
- Institute of Experimental Physics, Warsaw University, 00-681 Warsaw, Poland
| | - P Mijakowski
- Institute of Experimental Physics, Warsaw University, 00-681 Warsaw, Poland
| | - K Connolly
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
| | - M Dziomba
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
| | - E Thrane
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
| | - R J Wilkes
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
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Takhistov V, Abe K, Haga Y, Hayato Y, Ikeda M, Iyogi K, Kameda J, Kishimoto Y, Miura M, Moriyama S, Nakahata M, Nakano Y, Nakayama S, Sekiya H, Shiozawa M, Suzuki Y, Takeda A, Tanaka H, Tomura T, Ueno K, Wendell RA, Yokozawa T, Irvine T, Kajita T, Kametani I, Kaneyuki K, Lee KP, McLachlan T, Nishimura Y, Richard E, Okumura K, Labarga L, Fernandez P, Berkman S, Tanaka HA, Tobayama S, Gustafson J, Kearns E, Raaf JL, Stone JL, Sulak LR, Goldhaber M, Carminati G, Kropp WR, Mine S, Weatherly P, Renshaw A, Smy MB, Sobel HW, Ganezer KS, Hartfiel BL, 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, Kikawa T, Minamino A, Murakami A, Nakaya T, Suzuki K, Takahashi S, Tateishi K, 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, Yamaguchi R, Yano T, Kuno Y, Tacik R, Kim SB, Okazawa H, Choi Y, Nishijima K, Koshiba M, Suda Y, Totsuka Y, Yokoyama M, Martens K, Marti L, Vagins MR, Martin JF, de Perio P, Konaka A, Wilking MJ, Chen S, Zhang Y, Connolly K, Wilkes RJ. Search for trilepton nucleon decay via p→e+νν and p→μ+νν in the Super-Kamiokande experiment. Phys Rev Lett 2014; 113:101801. [PMID: 25238348 DOI: 10.1103/physrevlett.113.101801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Indexed: 06/03/2023]
Abstract
The trilepton nucleon decay modes p→e+νν and p→μ+νν violate |Δ(B-L)| by two units. Using data from a 273.4 kt yr exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of τp→e+νν>1.7×10(32) years and τp→μ+νν>2.2×10(32) years at a 90% confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.
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Affiliation(s)
- V Takhistov
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - K Abe
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Haga
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - Y Hayato
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M Ikeda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - K Iyogi
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - J Kameda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Kishimoto
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M Miura
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - S Moriyama
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M Nakahata
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Nakano
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - S Nakayama
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - H Sekiya
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M Shiozawa
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Suzuki
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - A Takeda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - H Tanaka
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - T Tomura
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Ueno
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - R A Wendell
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T Yokozawa
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - T Irvine
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T Kajita
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - I Kametani
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Kaneyuki
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K P Lee
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T McLachlan
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Nishimura
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - E Richard
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Okumura
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - L Labarga
- Department of Theoretical Physics, University Autonoma Madrid, 28049 Madrid, Spain
| | - P Fernandez
- Department of Theoretical Physics, University Autonoma Madrid, 28049 Madrid, Spain
| | - S Berkman
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, V6T1Z4, Canada
| | - H A Tanaka
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, V6T1Z4, Canada
| | - S Tobayama
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, V6T1Z4, Canada
| | - J Gustafson
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - E Kearns
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - J L Raaf
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - J L Stone
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - L R Sulak
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - M Goldhaber
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Carminati
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - W R Kropp
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - S Mine
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - P Weatherly
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - A Renshaw
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - M B Smy
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - H W Sobel
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K S Ganezer
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - B L Hartfiel
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - J Hill
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - W E Keig
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - N Hong
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - J Y Kim
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - I T Lim
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - T Akiri
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - A Himmel
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - K Scholberg
- Department of Physics, Duke University, Durham, North Carolina 27708, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - C W Walter
- Department of Physics, Duke University, Durham, North Carolina 27708, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T Wongjirad
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - T Ishizuka
- Junior College, Fukuoka Institute of Technology, Fukuoka, Fukuoka 811-0295, Japan
| | - S Tasaka
- Department of Physics, Gifu University, Gifu, Gifu 501-1193, Japan
| | - J S Jang
- GIST College, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea
| | - J G Learned
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S Matsuno
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S N Smith
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - T Hasegawa
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Ishida
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Ishii
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Kobayashi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Nakadaira
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Nakamura
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Oyama
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Sakashita
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Sekiguchi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Tsukamoto
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - A T Suzuki
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Y Takeuchi
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - C Bronner
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - S Hirota
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - K Huang
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - K Ieki
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - T Kikawa
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - A Minamino
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - A Murakami
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - T Nakaya
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Suzuki
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - S Takahashi
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - K Tateishi
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - Y Fukuda
- Department of Physics, Miyagi University of Education, Sendai, Miyagi 980-0845, Japan
| | - K Choi
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - Y Itow
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - G Mitsuka
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - P Mijakowski
- National Centre For Nuclear Research, 00-681 Warsaw, Poland
| | - J Hignight
- Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, USA
| | - J Imber
- Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, USA
| | - C K Jung
- Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, USA
| | - C Yanagisawa
- Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, USA
| | - H Ishino
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - A Kibayashi
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - Y Koshio
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - T Mori
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - M Sakuda
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - R Yamaguchi
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - T Yano
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - Y Kuno
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - R Tacik
- Department of Physics, University of Regina, 3737 Wascana Parkway, Regina, Saskatchewan, S4SOA2, Canada and TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T2A3, Canada
| | - S B Kim
- Department of Physics, Seoul National University, Seoul 151-742, Korea
| | - H Okazawa
- Department of Informatics in Social Welfare, Shizuoka University of Welfare, Yaizu, Shizuoka, 425-8611, Japan
| | - Y Choi
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - K Nishijima
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - M Koshiba
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Y Suda
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Y Totsuka
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - M Yokoyama
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Martens
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Ll Marti
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M R Vagins
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - J F Martin
- Department of Physics, University of Toronto, 60 Saint George Street, Toronto, Ontario, M5S1A7, Canada
| | - P de Perio
- Department of Physics, University of Toronto, 60 Saint George Street, Toronto, Ontario, M5S1A7, Canada
| | - A Konaka
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T2A3, Canada
| | - M J Wilking
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T2A3, Canada
| | - S Chen
- Department of Engineering Physics, Tsinghua University, Beijing, 100084, China
| | - Y Zhang
- Department of Engineering Physics, Tsinghua University, Beijing, 100084, China
| | - K Connolly
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
| | - R J Wilkes
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
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3
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Litos M, Abe K, Hayato Y, Iida T, Ikeda M, Iyogi K, Kameda J, Kobayashi K, Koshio Y, Kozuma Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Obayashi Y, Ogawa H, Sekiya H, Shiozawa M, Suzuki Y, Takeda A, Takenaga Y, Takeuchi Y, Ueno K, Ueshima K, Watanabe H, Yamada S, Yokozawa T, Hazama S, Ishihara C, Kaji H, Kajita T, Kaneyuki K, McLachlan T, Okumura K, Shimizu Y, Tanimoto N, Vagins MR, Kearns E, Stone JL, Sulak LR, Dufour F, Raaf JL, Henning B, Goldhaber M, Bays K, Casper D, Cravens JP, Kropp WR, Mine S, Regis C, Smy MB, Sobel HW, Ganezer KS, Hill J, Keig WE, Jang JS, Kim JY, Lim IT, Albert JB, Wongjirad T, Wendell R, Scholberg K, Walter CW, Tasaka S, Learned JG, Matsuno S, Watanabe Y, Hasegawa T, Ishida T, Ishii T, Kobayashi T, Nakadaira T, Nakamura K, Nishikawa K, Nishino H, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Suzuki AT, Minamino A, Nakaya T, Fukuda Y, Itow Y, Mitsuka G, Tanaka T, Jung CK, Lopez G, McGrew C, Terri R, Yanagisawa C, Tamura N, Ishino H, Kibayashi A, Mino S, Mori T, Sakuda M, Toyota H, Kuno Y, Yoshida M, Kim SB, Yang BS, Ishizuka T, Okazawa H, Choi Y, Nishijima K, Yokosawa Y, Koshiba M, Yokoyama M, Totsuka Y, Chen S, Heng Y, Yang Z, Zhang H, Kielczewska D, Mijakowski P, Connolly K, Dziomba M, Thrane E, Wilkes RJ. Search for dinucleon decay into kaons in Super-Kamiokande. Phys Rev Lett 2014; 112:131803. [PMID: 24745406 DOI: 10.1103/physrevlett.112.131803] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Indexed: 06/03/2023]
Abstract
A search for the dinucleon decay pp → K+ K+ has been performed using 91.6 kton·yr data from Super-Kamiokande-I. This decay provides a sensitive probe of the R-parity-violating parameter λ112''. A boosted decision tree analysis found no signal candidates in the data. The expected background was 0.28±0.19 atmospheric neutrino induced events and the estimated signal detection efficiency was 12.6%±3.2%. A lower limit of 1.7×10(32) years has been placed on the partial lifetime of the decay O16 → C14K+ K+ at 90% C.L. A corresponding upper limit of 7.8×10(-9) has been placed on the parameter λ112''.
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Affiliation(s)
- M Litos
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - K Abe
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - Y Hayato
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - T Iida
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - M Ikeda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - K Iyogi
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - J Kameda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - K Kobayashi
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - Y Koshio
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - Y Kozuma
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - M Miura
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - S Moriyama
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M Nakahata
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - S Nakayama
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - Y Obayashi
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - H Ogawa
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - H Sekiya
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - M Shiozawa
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - Y Suzuki
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - A Takeda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - Y Takenaga
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - Y Takeuchi
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - K Ueno
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - K Ueshima
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - H Watanabe
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - S Yamada
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - T Yokozawa
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - S Hazama
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - C Ishihara
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - H Kaji
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T Kajita
- Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan and Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Kaneyuki
- Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan and Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T McLachlan
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Okumura
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Shimizu
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - N Tanimoto
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M R Vagins
- Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan and Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - E Kearns
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA and Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - J L Stone
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA and Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - L R Sulak
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - F Dufour
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - J L Raaf
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - B Henning
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - M Goldhaber
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Bays
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - D Casper
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - J P Cravens
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - W R Kropp
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - S Mine
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - C Regis
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - M B Smy
- Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan and Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - H W Sobel
- Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan and Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - K S Ganezer
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - J Hill
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - W E Keig
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - J S Jang
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - J Y Kim
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - I T Lim
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - J B Albert
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - T Wongjirad
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - R Wendell
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - K Scholberg
- Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan and Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - C W Walter
- Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan and Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - S Tasaka
- Department of Physics, Gifu University, Gifu, Gifu 501-1193, Japan
| | - J G Learned
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S Matsuno
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - Y Watanabe
- Physics Division, Department of Engineering, Kanagawa University, Kanagawa, Yokohama 221-8686, Japan
| | - T Hasegawa
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Ishida
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Ishii
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Kobayashi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Nakadaira
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Nakamura
- Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan and High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Nishikawa
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - H Nishino
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Y Oyama
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Sakashita
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Sekiguchi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Tsukamoto
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - A T Suzuki
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - A Minamino
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - T Nakaya
- Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8583, Japan and Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - Y Fukuda
- Department of Physics, Miyagi University of Education, Sendai, Miyagi 980-0845, Japan
| | - Y Itow
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - G Mitsuka
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - T Tanaka
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - C K Jung
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
| | - G Lopez
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
| | - C McGrew
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
| | - R Terri
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
| | - C Yanagisawa
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
| | - N Tamura
- Department of Physics, Niigata University, Niigata, Niigata 950-2181, Japan
| | - H Ishino
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - A Kibayashi
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - S Mino
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - T Mori
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - M Sakuda
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - H Toyota
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - Y Kuno
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Yoshida
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S B Kim
- Department of Physics, Seoul National University, Seoul 151-742, Korea
| | - B S Yang
- Department of Physics, Seoul National University, Seoul 151-742, Korea
| | - T Ishizuka
- Department of Systems Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
| | - H Okazawa
- Department of Informatics in Social Welfare, Shizuoka University of Welfare, Yaizu, Shizuoka 425-8611, Japan
| | - Y Choi
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - K Nishijima
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Y Yokosawa
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - M Koshiba
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - M Yokoyama
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Y Totsuka
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - S Chen
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Y Heng
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Z Yang
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - H Zhang
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - D Kielczewska
- Institute of Experimental Physics, Warsaw University, 00-681 Warsaw, Poland
| | - P Mijakowski
- Institute of Experimental Physics, Warsaw University, 00-681 Warsaw, Poland
| | - K Connolly
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
| | - M Dziomba
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
| | - E Thrane
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
| | - R J Wilkes
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
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4
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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. First indication of terrestrial matter effects on solar neutrino oscillation. Phys Rev Lett 2014; 112:091805. [PMID: 24655245 DOI: 10.1103/physrevlett.112.091805] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Indexed: 06/03/2023]
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 2.7 σ. 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) eV(2) ≤ Δm 2(21) ≤ 7 × 10(-5) eV(2) and large mixing values of θ12, at the 68% C.L.
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Affiliation(s)
- A Renshaw
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - K Abe
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Hayato
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Iyogi
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - J Kameda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Kishimoto
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M Miura
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - S Moriyama
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M Nakahata
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Nakano
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - S Nakayama
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - H Sekiya
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M Shiozawa
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Suzuki
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - A Takeda
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Takenaga
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - T Tomura
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Ueno
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - T Yokozawa
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
| | - R A Wendell
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T Irvine
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T Kajita
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Kaneyuki
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K P Lee
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Nishimura
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Okumura
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T McLachlan
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - L Labarga
- Department of Theoretical Physics, University Autonoma Madrid, 28049 Madrid, Spain
| | - S Berkman
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T1Z4, Canada
| | - H A Tanaka
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T1Z4, Canada and Institute of Particle Physics, Canada, University of Toronto, 60 Saint George Street, Toronta, Ontario M5S1A7, Canada
| | - S Tobayama
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T1Z4, Canada
| | - E Kearns
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - J L Raaf
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - J L Stone
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - L R Sulak
- Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - M Goldhabar
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Bays
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - G Carminati
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - W R Kropp
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - S Mine
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
| | - M B Smy
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - H W Sobel
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K S Ganezer
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - J Hill
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - W E Keig
- Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
| | - N Hong
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - J Y Kim
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - I T Lim
- Department of Physics, Chonnam National University, Kwangju 500-757, Korea
| | - T Akiri
- Department of Physics, Duke University, Durham North Carolina 27708, USA
| | - A Himmel
- Department of Physics, Duke University, Durham North Carolina 27708, USA
| | - K Scholberg
- Department of Physics, Duke University, Durham North Carolina 27708, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - C W Walter
- Department of Physics, Duke University, Durham North Carolina 27708, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - T Wongjirad
- Department of Physics, Duke University, Durham North Carolina 27708, USA
| | - T Ishizuka
- Junior College, Fukuoka Institute of Technology, Fukuoka, Fukuoka 811-0295, Japan
| | - S Tasaka
- Department of Physics, Gifu University, Gifu, Gifu 501-1193, Japan
| | - J S Jang
- GIST College, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea
| | - J G Learned
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S Matsuno
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - S N Smith
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - T Hasegawa
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Ishida
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Ishii
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Kobayashi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Nakadaira
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Nakamura
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Y Oyama
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Sakashita
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Sekiguchi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - T Tsukamoto
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - A T Suzuki
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Y Takeuchi
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - C Bronner
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - S Hirota
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - K Huang
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - K Ieki
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - M Ikeda
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - T Kikawa
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - A Minamino
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - T Nakaya
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Suzuki
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - S Takahashi
- Department of Physics, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - Y Fukuda
- Department of Physics, Miyagi University of Education, Sendai, Miyagi 980-0845, Japan
| | - K Choi
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - Y Itow
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - G Mitsuka
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - P Mijakowski
- National Centre For Nuclear Research, 00-681 Warsaw, Poland
| | - J Hignight
- Department of Physics and Astronomy, State University of New York at Stony Brook, New York 11794-3800, USA
| | - J Imber
- Department of Physics and Astronomy, State University of New York at Stony Brook, New York 11794-3800, USA
| | - C K Jung
- Department of Physics and Astronomy, State University of New York at Stony Brook, New York 11794-3800, USA
| | - C Yanagisawa
- Department of Physics and Astronomy, State University of New York at Stony Brook, New York 11794-3800, USA
| | - H Ishino
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - A Kibayashi
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - Y Koshio
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - T Mori
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - M Sakuda
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - T Yano
- Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
| | - Y Kuno
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - R Tacik
- Department of Physics, University of Regina, 3737 Wascana Parkway, Regina, Saskatchewan S4SOA2, Canada and TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T2A3, Canada
| | - S B Kim
- Department of Physics, Seoul National University, Seoul 151-742, Korea
| | - H Okazawa
- Department of Informatics in Social Welfare, Shizuoka University of Welfare, Yaizu, Shizuoka 425-8611, Japan
| | - Y Choi
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
| | - K Nishijima
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - M Koshiba
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Y Totsuka
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - M Yokoyama
- The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Martens
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - Ll Marti
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - M R Vagins
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA and Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - J F Martin
- Department of Physics, University of Toronto, 60 Saint George Street, Toronto, Ontario M5S1A7, Canada
| | - P de Perio
- Department of Physics, University of Toronto, 60 Saint George Street, Toronto, Ontario M5S1A7, Canada
| | - A Konaka
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T2A3, Canada
| | - M J Wilking
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T2A3, Canada
| | - S Chen
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Y Zhang
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - R J Wilkes
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
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5
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Abe K, Hayato Y, Iida T, Iyogi K, Kameda J, Koshio Y, Kozuma Y, Marti L, Miura M, Moriyama S, Nakahata M, Nakayama S, Obayashi Y, Sekiya H, Shiozawa M, Suzuki Y, Takeda A, Takenaga Y, Ueno K, Ueshima K, Yamada S, Yokozawa T, Ishihara C, Kaji H, Kajita T, Kaneyuki K, Lee KP, McLachlan T, Okumura K, Shimizu Y, Tanimoto N, Labarga L, Kearns E, Litos M, Raaf JL, Stone JL, Sulak LR, Goldhaber M, Bays K, Kropp WR, Mine S, Regis C, Renshaw A, Smy MB, Sobel HW, Ganezer KS, Hill J, Keig WE, Jang JS, Kim JY, Lim IT, Albert JB, Scholberg K, Walter CW, Wendell R, Wongjirad TM, Ishizuka T, Tasaka S, Learned JG, Matsuno S, Smith SN, Hasegawa T, Ishida T, Ishii T, Kobayashi T, Nakadaira T, Nakamura K, Nishikawa K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Suzuki AT, Takeuchi Y, Ikeda M, Minamino A, Nakaya T, Fukuda Y, Itow Y, Mitsuka G, Tanaka T, Jung CK, Lopez GD, Taylor I, Yanagisawa C, Ishino H, Kibayashi A, Mino S, Mori T, Sakuda M, Toyota H, Kuno Y, Yoshida M, Kim SB, Yang BS, Okazawa H, Choi Y, Nishijima K, Koshiba M, Yokoyama M, Totsuka Y, Martens K, Schuemann J, Vagins MR, Chen S, Heng Y, Yang Z, Zhang H, Kielczewska D, Mijakowski P, Connolly K, Dziomba M, Thrane E, Wilkes RJ. Evidence for the appearance of atmospheric tau neutrinos in super-Kamiokande. Phys Rev Lett 2013; 110:181802. [PMID: 23683190 DOI: 10.1103/physrevlett.110.181802] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Indexed: 06/02/2023]
Abstract
Super-Kamiokande atmospheric neutrino data were fit with an unbinned maximum likelihood method to search for the appearance of tau leptons resulting from the interactions of oscillation-generated tau neutrinos in the detector. Relative to the expectation of unity, the tau normalization is found to be 1.42 ± 0.35(stat)(-0.12)(+0.14)(syst) excluding the no-tau-appearance hypothesis, for which the normalization would be zero, at the 3.8σ level. We estimate that 180.1 ± 44.3(stat)(-15.2)(+17.8) (syst) tau leptons were produced in the 22.5 kton fiducial volume of the detector by tau neutrinos during the 2806 day running period. In future analyses, this large sample of selected tau events will allow the study of charged current tau neutrino interaction physics with oscillation produced tau neutrinos.
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Affiliation(s)
- K Abe
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
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6
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Abe K, Hayato Y, Iida T, Ikeda M, Iyogi K, Kameda J, Koshio Y, Kozuma Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Obayashi Y, Sekiya H, Shiozawa M, Suzuki Y, Takeda A, Takenaga Y, Takeuchi Y, Ueno K, Ueshima K, Watanabe H, Yamada S, Yokozawa T, Ishihara C, Kaji H, Lee KP, Kajita T, Kaneyuki K, McLachlan T, Okumura K, Shimizu Y, Tanimoto N, Martens K, Vagins MR, Labarga L, Magro LM, Dufour F, Kearns E, Litos M, Raaf JL, Stone JL, Sulak LR, Goldhaber M, Bays K, Kropp WR, Mine S, Regis C, Smy MB, Sobel HW, Ganezer KS, Hill J, Keig WE, Jang JS, Kim JY, Lim IT, Albert JB, Scholberg K, Walter CW, Wendell R, Wongjirad TM, Tasaka S, Learned JG, Matsuno S, Hasegawa T, Ishida T, Ishii T, Kobayashi T, Nakadaira T, Nakamura K, Nishikawa K, Nishino H, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Suzuki AT, Minamino A, Nakaya T, Fukuda Y, Itow Y, Mitsuka G, Tanaka T, Jung CK, Taylor I, Yanagisawa C, Ishino H, Kibayashi A, Mino S, Mori T, Sakuda M, Toyota H, Kuno Y, Kim SB, Yang BS, Ishizuka T, Okazawa H, Choi Y, Nishijima K, Koshiba M, Yokoyama M, Totsuka Y, Chen S, Heng Y, Yang Z, Zhang H, Kielczewska D, Mijakowski P, Connolly K, Dziomba M, Wilkes RJ. Search for differences in oscillation parameters for atmospheric neutrinos and antineutrinos at Super-Kamiokande. Phys Rev Lett 2011; 107:241801. [PMID: 22242990 DOI: 10.1103/physrevlett.107.241801] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Indexed: 05/31/2023]
Abstract
We present a search for differences in the oscillations of antineutrinos and neutrinos in the Super-Kamiokande-I, -II, and -III atmospheric neutrino sample. Under a two-flavor disappearance model with separate mixing parameters between neutrinos and antineutrinos, we find no evidence for a difference in oscillation parameters. Best-fit antineutrino mixing is found to be at (Δm2,sin2 2θ)=(2.0×10(-3) eV2, 1.0) and is consistent with the overall Super-K measurement.
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Affiliation(s)
- K Abe
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
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7
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Nishino H, Clark S, Abe K, Hayato Y, Iida T, Ikeda M, Kameda J, Kobayashi K, Koshio Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Obayashi Y, Ogawa H, Sekiya H, Shiozawa M, Suzuki Y, Takeda A, Takenaga Y, Takeuchi Y, Ueno K, Ueshima K, Watanabe H, Yamada S, Hazama S, Higuchi I, Ishihara C, Kajita T, Kaneyuki K, Mitsuka G, Okumura K, Tanimoto N, Vagins MR, Dufour F, Kearns E, Litos M, Raaf JL, Stone JL, Sulak LR, Wang W, Goldhaber M, Dazeley S, Svoboda R, Bays K, Casper D, Cravens JP, Kropp WR, Mine S, Regis C, Smy MB, Sobel HW, Ganezer KS, Hill J, Keig WE, Jang JS, Kim JY, Lim IT, Fechner M, Scholberg K, Walter CW, Wendell R, Tasaka S, Learned JG, Matsuno S, Watanabe Y, Hasegawa T, Ishida T, Ishii T, Kobayashi T, Nakadaira T, Nakamura K, Nishikawa K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Suzuki AT, Minamino A, Nakaya T, Yokoyama M, Fukuda Y, Itow Y, Tanaka T, Jung CK, Lopez G, McGrew C, Terri R, Yanagisawa C, Tamura N, Idehara Y, Sakuda M, Kuno Y, Yoshida M, Kim SB, Yang BS, Ishizuka T, Okazawa H, Choi Y, Seo HK, Furuse Y, Nishijima K, Yokosawa Y, Koshiba M, Totsuka Y, Chen S, Heng Y, Yang Z, Zhang H, Kielczewska D, Thrane E, Wilkes RJ. Search for proton decay via p-->e+pi0 and p-->micro+pi0 in a large water Cherenkov detector. Phys Rev Lett 2009; 102:141801. [PMID: 19392425 DOI: 10.1103/physrevlett.102.141801] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Indexed: 05/27/2023]
Abstract
We have searched for proton decays via p-->e;{+}pi;{0} and p-->micro;{+}pi;{0} using data from a 91.7 kt.yr exposure of Super-Kamiokande-I and a 49.2 kt.yr exposure of Super-Kamiokande-II. No candidate events were observed with expected backgrounds induced by atmospheric neutrinos of 0.3 events for each decay mode. From these results, we set lower limits on the partial lifetime of 8.2 x 10;{33} and 6.6 x 10;{33} years at 90% confidence level for p-->e;{+}pi;{0} and p-->micro;{+}pi;{0} modes, respectively.
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Affiliation(s)
- H Nishino
- Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
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8
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Abe K, Hayato Y, Iida T, Ikeda M, Kameda J, Koshio Y, Minamino A, Miura M, Moriyama S, Nakahata M, Nakayama S, Obayashi Y, Ogawa H, Sekiya H, Shiozawa M, Suzuki Y, Takeda A, Takeuchi Y, Ueshima K, Watanabe H, Yamada S, Higuchi I, Ishihara C, Kajita T, Kaneyuki K, Mitsuka G, Nishino H, Okumura K, Saji C, Takenaga Y, Clark S, Desai S, Dufour F, Kearns E, Likhoded S, Litos M, Raaf JL, Stone JL, Sulak LR, Wang W, Goldhaber M, Casper D, Cravens JP, Dunmore J, Kropp WR, Liu DW, Mine S, Regis C, Smy MB, Sobel HW, Vagins MR, Ganezer KS, Hartfield B, Hill J, Keig WE, Jang JS, Jeong IS, Kim JY, Lim IT, Scholberg K, Fechner M, Tanimoto N, Walter CW, Wendell R, Tasaka S, Guillian G, Learned JG, Matsuno S, Messier MD, Hasegawa T, Ishida T, Ishii T, Kobayashi T, Nakadaira T, Nakamura K, Nishikawa K, Oyama Y, Totsuka Y, Suzuki AT, Nakaya T, Tanaka H, Yokoyama M, Haines TJ, Dazeley S, Svoboda R, Habig A, Fukuda Y, Sato T, Itow Y, Koike T, Tanaka T, Jung CK, Kato T, Kobayashi K, McGrew C, Sarrat A, Terri R, Yanagisawa C, Tamura N, Idehara Y, Sakuda M, Sugihara M, Kuno Y, Yoshida M, Kim SB, Yang BS, Ishizuka T, Okazawa H, Choi Y, Seo HK, Gando Y, Inoue K, Furuse Y, Ishii H, Nishijima K, Watanabe Y, Koshiba M, Chen S, Deng Z, Liu Y, Kielczewska D, Berns H, Shiraishi KK, Thrane E, Wilkes RJ. Search for matter-dependent atmospheric neutrino oscillations in Super-Kamiokande. Int J Clin Exp Med 2008. [DOI: 10.1103/physrevd.77.052001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Abe K, Hayato Y, Iida T, Ishihara K, Kameda J, Koshio Y, Minamino A, Mitsuda C, Miura M, Moriyama S, Nakahata M, Obayashi Y, Ogawa H, Shiozawa M, Suzuki Y, Takeda A, Takeuchi Y, Ueshima K, Higuchi I, Ishihara C, Ishitsuka M, Kajita T, Kaneyuki K, Mitsuka G, Nakayama S, Nishino H, Okumura K, Saji C, Takenaga Y, Totsuka Y, Clark S, Desai S, Dufour F, Kearns E, Likhoded S, Litos M, Raaf JL, Stone JL, Sulak LR, Wang W, Goldhaber M, Casper D, Cravens JP, Kropp WR, Liu DW, Mine S, Regis C, Smy MB, Sobel HW, Vagins MR, Ganezer KS, Hill JE, Keig WE, Jang JS, Kim JY, Lim IT, Scholberg K, Tanimoto N, Walter CW, Wendell R, Ellsworth RW, Tasaka S, Guillian E, Learned JG, Matsuno S, Messier MD, Ichikawa AK, Ishida T, Ishii T, Iwashita T, Kobayashi T, Nakadaira T, Nakamura K, Nitta K, Oyama Y, Suzuki AT, Hasegawa M, Kato I, Maesaka H, Nakaya T, Nishikawa K, Sasaki T, Sato H, Yamamoto S, Yokoyama M, Haines TJ, Dazeley S, Hatakeyama S, Svoboda R, Sullivan GW, Habig A, Gran R, Fukuda Y, Sato T, Itow Y, Koike T, Jung CK, Kato T, Kobayashi K, Malek M, McGrew C, Sarrat A, Terri R, Yanagisawa C, Tamura N, Sakuda M, Sugihara M, Kuno Y, Yoshida M, Kim SB, Yoo J, Ishizuka T, Okazawa H, Choi Y, Seo HK, Gando Y, Hasegawa T, Inoue K, Ishii H, Nishijima K, Ishino H, Watanabe Y, Koshiba M, Kielczewska D, Zalipska J, Berns HG, Shiraishi KK, Washburn K, Wilkes RJ. Measurement of atmospheric neutrino flux consistent with tau neutrino appearance. Phys Rev Lett 2006; 97:171801. [PMID: 17155460 DOI: 10.1103/physrevlett.97.171801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2006] [Indexed: 05/12/2023]
Abstract
A search for the appearance of tau neutrinos from nu(mu) <--> nu(tau) oscillations in the atmospheric neutrinos has been performed using 1489.2 days of atmospheric neutrino data from the Super-Kamiokande-I experiment. A best fit tau neutrino appearance signal of 138+/-48(stat)-32(+15)(syst) events is obtained with an expectation of 78+/-26(syst). The hypothesis of no tau neutrino appearance is disfavored by 2.4 sigma.
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Affiliation(s)
- K Abe
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
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10
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Ashie Y, Hosaka J, Ishihara K, Itow Y, Kameda J, Koshio Y, Minamino A, Mitsuda C, Miura M, Moriyama S, Nakahata M, Namba T, Nambu R, Obayashi Y, Shiozawa M, Suzuki Y, Takeuchi Y, Taki K, Yamada S, Ishitsuka M, Kajita T, Kaneyuki K, Nakayama S, Okada A, Okumura K, Ooyabu T, Saji C, Takenaga Y, Desai S, Kearns E, Likhoded S, Stone JL, Sulak LR, Walter CW, Wang W, Goldhaber M, Casper D, Cravens JP, Gajewski W, Kropp WR, Liu DW, Mine S, Smy MB, Sobel HW, Sterner CW, Vagins MR, Ganezer KS, Hill J, Keig WE, Jang JS, Kim JY, Lim IT, Ellsworth RW, Tasaka S, Guillian G, Kibayashi A, Learned JG, Matsuno S, Takemori D, Messier MD, Hayato Y, Ichikawa AK, Ishida T, Ishii T, Iwashita T, Kobayashi T, Maruyama T, Nakamura K, Nitta K, Oyama Y, Sakuda M, Totsuka Y, Suzuki AT, Hasegawa M, Hayashi K, Inagaki T, Kato I, Maesaka H, Morita T, Nakaya T, Nishikawa K, Sasaki T, Ueda S, Yamamoto S, Haines TJ, Dazeley S, Hatakeyama S, Svoboda R, Blaufuss E, Goodman JA, Sullivan GW, Turcan D, Scholberg K, Habig A, Fukuda Y, Jung CK, Kato T, Kobayashi K, Malek M, Mauger C, McGrew C, Sarrat A, Sharkey E, Yanagisawa C, Toshito T, Miyano K, Tamura N, Ishii J, Kuno Y, Nagashima Y, Takita M, Yoshida M, Kim SB, Yoo J, Okazawa H, Ishizuka T, Choi Y, Seo HK, Gando Y, Hasegawa T, Inoue K, Shirai J, Suzuki A, Koshiba M, Nakajima Y, Nishijima K, Harada T, Ishino H, Nishimura R, Watanabe Y, Kielczewska D, Zalipska J, Berns HG, Gran R, Shiraishi KK, Stachyra A, Washburn K, Wilkes RJ. Evidence for an oscillatory signature in atmospheric neutrino oscillations. Phys Rev Lett 2004; 93:101801. [PMID: 15447395 DOI: 10.1103/physrevlett.93.101801] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2004] [Indexed: 05/14/2023]
Abstract
Muon neutrino disappearance probability as a function of neutrino flight length L over neutrino energy E was studied. A dip in the L/E distribution was observed in the data, as predicted from the sinusoidal flavor transition probability of neutrino oscillation. The observed L/E distribution constrained nu(micro)<-->nu(tau) neutrino oscillation parameters; 1.9x10(-3)<Deltam(2)<3.0x10(-3) eV(2) and sin((2)2theta>0.90 at 90% confidence level.
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Affiliation(s)
- Y Ashie
- Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu, 506-1205, Japan
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11
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Liu DW, Ashie Y, Fukuda S, Fukuda Y, Ishihara K, Itow Y, Koshio Y, Minamino A, Miura M, Moriyama S, Nakahata M, Namba T, Nambu R, Obayashi Y, Sakurai N, Shiozawa M, Suzuki Y, Takeuchi H, Takeuchi Y, Yamada S, Ishitsuka M, Kajita T, Kaneyuki K, Nakayama S, Okada A, Ooyabu T, Saji C, Desai S, Earl M, Kearns E, Messier MD, Stone JL, Sulak LR, Walter CW, Wang W, Barszczak T, Casper D, Cravens JP, Gajewski W, Kropp WR, Mine S, Smy MB, Sobel HW, Sterner CW, Vagins MR, Ganezer KS, Hill J, Keig WE, Kim JY, Lim IT, Ellsworth RW, Tasaka S, Kibayashi A, Learned JG, Matsuno S, Takemori D, Hayato Y, Ichikawa AK, Ishida T, Ishii T, Iwashita T, Kameda J, Kobayashi T, Maruyama T, Nakamura K, Nitta K, Oyama Y, Sakuda M, Totsuka Y, Suzuki AT, Hasegawa M, Hayashi K, Inagaki T, Kato I, Maesaka H, Morita T, Nakaya T, Nishikawa K, Sasaki T, Ueda S, Yamamoto S, Haines TJ, Dazeley S, Hatakeyama S, Svoboda R, Blaufuss E, Goodman JA, Guillian G, Sullivan GW, Turcan D, Scholberg K, Habig A, Ackermann M, Jung CK, Kato T, Kobayashi K, Martens K, Malek M, Mauger C, McGrew C, Sharkey E, Viren B, Yanagisawa C, Toshito T, Mitsuda C, Miyano K, Shibata T, Ishii J, Kajiyama Y, Kuno Y, Nagashima Y, Takita M, Yoshida M, Kim HI, Kim SB, Yoo J, Okazawa H, Ishizuka T, Choi Y, Seo HK, Gando Y, Hasegawa T, Inoue K, Shirai J, Suzuki A, Koshiba M, Hashimoto T, Nakajima Y, Nishijima K, Ishino H, Morii M, Nishimura R, Watanabe Y, Kielczewska D, Zalipska J, Gran R, Shiraishi KK, Washburn K, Wilkes RJ. Limits on the neutrino magnetic moment using 1496 days of Super-Kamiokande-I solar neutrino data. Phys Rev Lett 2004; 93:021802. [PMID: 15323899 DOI: 10.1103/physrevlett.93.021802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2004] [Indexed: 05/24/2023]
Abstract
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 micro(nu)</=(3.6x10(-10))micro(B) 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 micro(nu)</=(1.1x10(-10))micro(B) at 90% C.L. was obtained.
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Affiliation(s)
- D W Liu
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
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12
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Gando Y, Fukuda S, Fukuda Y, Ishitsuka M, Itow Y, Kajita T, Kameda J, Kaneyuki K, Kobayashi K, Koshio Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Namba T, Obayashi Y, Okada A, Ooyabu T, Saji C, Sakurai N, Shiozawa M, Suzuki Y, Takeuchi H, Takeuchi Y, Totsuka Y, Yamada S, Desai S, Earl M, Kearns E, Messier MD, Stone JL, Sulak LR, Walter CW, Goldhaber M, Barszczak T, Casper D, Gajewski W, Kropp WR, Mine S, Liu DW, Smy MB, Sobel HW, Vagins MR, Gago A, Ganezer KS, Hill J, Keig WE, Ellsworth RW, Tasaka S, Kibayashi A, Learned JG, Matsuno S, Takemori D, Hayato Y, Ichikawa AK, Ishii T, Kobayashi T, Maruyama T, Nakamura K, Oyama Y, Sakuda M, Yoshida M, Kohama M, Iwashita T, Suzuki AT, Inagaki T, Kato I, Nakaya T, Nishikawa K, Haines TJ, Dazeley S, Hatakeyama S, Svoboda R, Blaufuss E, Chen ML, Goodman JA, Guillian G, Sullivan GW, Turcan D, Scholberg K, Habig A, Ackermann M, Jung CK, Martens K, Malek M, Mauger C, McGrew C, Sharkey E, Viren B, Yanagisawa C, Toshito T, Mitsuda C, Miyano K, Shibata T, Kajiyama Y, Nagashima Y, Nitta K, Takita M, Kim HI, Kim SB, Yoo J, Okazawa H, Ishizuka T, Etoh M, Hasegawa T, Inoue K, Ishihara K, Shirai J, Suzuki A, Koshiba M, Hatakeyama Y, Ichikawa Y, Koike M, Nishijima K, Ishino H, Morii M, Nishimura R, Watanabe Y, Kielczewska D, Berns HG, Boyd SC, Stachyra AL, Wilkes RJ. Search for nu(e) from the sun at Super-Kamiokande-I. Phys Rev Lett 2003; 90:171302. [PMID: 12786067 DOI: 10.1103/physrevlett.90.171302] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2002] [Indexed: 05/24/2023]
Abstract
We present the results of a search for low energy nu(e) from the Sun using 1496 days of data from Super-Kamiokande-I. We observe no significant excess of events and set an upper limit for the conversion probability to nu(e) of the 8B solar neutrino. This conversion limit is 0.8% (90% C.L.) of the standard solar model's neutrino flux for total energy=8-20 MeV. We also set a flux limit for monochromatic nu(e) for E(nu(e))=10-17 MeV.
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Affiliation(s)
- Y Gando
- Research Center for Neutrino Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
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Malek M, Morii M, Fukuda S, Fukuda Y, Ishitsuka M, Itow Y, Kajita T, Kameda J, Kaneyuki K, Kobayashi K, Koshio Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Namba T, Okada A, Ooyabu T, Saji C, Sakurai N, Shiozawa M, Suzuki Y, Takeuchi H, Takeuchi Y, Totsuka Y, Yamada S, Desai S, Earl M, Kearns E, Messier MD, Stone JL, Sulak LR, Walter CW, Goldhaber M, Barszczak T, Casper D, Gajewski W, Kropp WR, Mine S, Liu DW, Smy MB, Sobel HW, Vagins MR, Gago A, Ganezer KS, Keig WE, Ellsworth RW, Tasaka S, Kibayashi A, Learned JG, Matsuno S, Takemori D, Hayato Y, Ishii T, Kobayashi T, Maruyama T, Nakamura K, Obayashi Y, Oyama Y, Sakuda M, Yoshida M, Kohama M, Iwashita T, Suzuki AT, Ichikawa A, Inagaki T, Kato I, Nakaya T, Nishikawa K, Haines TJ, Dazeley S, Hatakeyama S, Svoboda R, Blaufuss E, Goodman JA, Guillian G, Sullivan GW, Turcan D, Scholberg K, Habig A, Ackermann M, Hill J, Jung CK, Martens K, Mauger C, McGrew C, Sharkey E, Viren B, Yanagisawa C, Toshito T, Mitsuda C, Miyano K, Shibata T, Kajiyama Y, Nagashima Y, Nitta K, Takita M, Kim HI, Kim SB, Yoo J, Okazawa H, Ishizuka T, Etoh M, Gando Y, Hasegawa T, Inoue K, Ishihara K, Shirai J, Suzuki A, Koshiba M, Hatakeyama Y, Ichikawa Y, Koike M, Nishijima K, Ishino H, Nishimura R, Watanabe Y, Kielczewska D, Berns HG, Boyd SC, Stachyra AL, Wilkes RJ. Search for supernova relic neutrinos at Super-Kamiokande. Phys Rev Lett 2003; 90:061101. [PMID: 12633283 DOI: 10.1103/physrevlett.90.061101] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2002] [Revised: 10/21/2002] [Indexed: 05/24/2023]
Abstract
A search for the relic neutrinos from all past core-collapse supernovae was conducted using 1496 days of data from the Super-Kamiokande detector. This analysis looked for electron-type antineutrinos that had produced a positron with an energy greater than 18 MeV. In the absence of a signal, 90% C.L. upper limits on the total flux were set for several theoretical models; these limits ranged from 20 to 130 macro nu(e) cm(-2) s(-1). Additionally, an upper bound of 1.2 macro nu(e) cm(-2) s(-1) was set for the supernova relic neutrino flux in the energy region E(nu)>19.3 MeV.
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Affiliation(s)
- M Malek
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
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14
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Fukuda S, Fukuda Y, Ishitsuka M, Itow Y, Kajita T, Kameda J, Kaneyuki K, Kobayashi K, Koshio Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Okada A, Sakurai N, Shiozawa M, Suzuki Y, Takeuchi H, Takeuchi Y, Toshito T, Totsuka Y, Yamada S, Desai S, Earl M, Kearns E, Messier MD, Scholberg K, Stone JL, Sulak LR, Walter CW, Goldhaber M, Barszczak T, Casper D, Gajewski W, Kropp WR, Mine S, Liu DW, Price LR, Smy MB, Sobel HW, Vagins MR, Ganezer KS, Keig WE, Ellsworth RW, Tasaka S, Kibayashi A, Learned JG, Matsuno S, Takemori D, Hayato Y, Ishii T, Kobayashi T, Nakamura K, Obayashi Y, Oyama Y, Sakai A, Sakuda M, Kohama M, Suzuki AT, Inagaki T, Nakaya T, Nishikawa K, Haines TJ, Blaufuss E, Dazeley S, Lee KB, Svoboda R, Goodman JA, Guillian G, Sullivan GW, Turcan D, Habig A, Hill J, Jung CK, Martens K, Malek M, Mauger C, McGrew C, Sharkey E, Viren B, Yanagisawa C, Mitsuda C, Miyano K, Saji C, Shibata T, Kajiyama Y, Nagashima Y, Nitta K, Takita M, Yoshida M, Kim HI, Kim SB, Yoo J, Okazawa H, Ishizuka T, Etoh M, Gando Y, Hasegawa T, Inoue K, Ishihara K, Maruyama T, Shirai J, Suzuki A, Koshiba M, Hatakeyama Y, Ichikawa Y, Koike M, Nishijima K, Fujiyasu H, Ishino H, Morii M, Watanabe Y, Golebiewska U, Kielczewska D, Boyd SC, Stachyra AL, Wilkes RJ, Young KK. Constraints on neutrino oscillations using 1258 days of Super-Kamiokande solar neutrino data. Phys Rev Lett 2001; 86:5656-5660. [PMID: 11415326 DOI: 10.1103/physrevlett.86.5656] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2001] [Indexed: 05/23/2023]
Abstract
We report the result of a search for neutrino oscillations using precise measurements of the recoil electron energy spectrum and zenith angle variations of the solar neutrino flux from 1258 days of neutrino-electron scattering data in Super-Kamiokande. The absence of significant zenith angle variation and spectrum distortion places strong constraints on neutrino mixing and mass difference in a flux-independent way. Using the Super-Kamiokande flux measurement in addition, two allowed regions at large mixing are found.
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Affiliation(s)
- S Fukuda
- Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
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Fukuda S, Fukuda Y, Ishitsuka M, Itow Y, Kajita T, Kameda J, Kaneyuki K, Kobayashi K, Koshio Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Okada A, Sakurai N, Shiozawa M, Suzuki Y, Takeuchi H, Takeuchi Y, Toshito T, Totsuka Y, Yamada S, Desai S, Earl M, Kearns E, Messier MD, Scholberg K, Stone JL, Sulak LR, Walter CW, Goldhaber M, Barszczak T, Casper D, Gajewski W, Kropp WR, Mine S, Liu DW, Price LR, Smy MB, Sobel HW, Vagins MR, Ganezer KS, Keig WE, Ellsworth RW, Tasaka S, Kibayashi A, Learned JG, Matsuno S, Takemori D, Hayato Y, Ishii T, Kobayashi T, Nakamura K, Obayashi Y, Oyama Y, Sakai A, Sakuda M, Kohama M, Suzuki AT, Inagaki T, Nakaya T, Nishikawa K, Haines TJ, Blaufuss E, Dazeley S, Lee KB, Svoboda R, Goodman JA, Guillian G, Sullivan GW, Turcan D, Habig A, Hill J, Jung CK, Martens K, Malek M, Mauger C, McGrew C, Sharkey E, Viren B, Yanagisawa C, Mitsuda C, Miyano K, Saji C, Shibata T, Kajiyama Y, Nagashima Y, Nitta K, Takita M, Yoshida M, Kim HI, Kim SB, Yoo J, Okazawa H, Ishizuka T, Etoh M, Gando Y, Hasegawa T, Inoue K, Ishihara K, Maruyama T, Shirai J, Suzuki A, Koshiba M, Hatakeyama Y, Ichikawa Y, Koike M, Nishijima K, Fujiyasu H, Ishino H, Morii M, Watanabe Y, Golebiewska U, Kielczewska D, Boyd SC, Stachyra AL, Wilkes RJ, Young KK. Solar 8B and hep neutrino measurements from 1258 days of Super-Kamiokande data. Phys Rev Lett 2001; 86:5651-5655. [PMID: 11415325 DOI: 10.1103/physrevlett.86.5651] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2001] [Indexed: 05/23/2023]
Abstract
Solar neutrino measurements from 1258 days of data from the Super-Kamiokande detector are presented. The measurements are based on recoil electrons in the energy range 5.0-20.0 MeV. The measured solar neutrino flux is 2.32+/-0.03(stat)+0.08-0.07(syst)x10(6) cm(-2) x s(-1), which is 45.1+/-0.5(stat)+1.6-1.4(syst)% of that predicted by the BP2000 SSM. The day vs night flux asymmetry (Phi(n)-Phi(d))/Phi(average) is 0.033+/-0.022(stat)+0.013-0.012(syst). The recoil electron energy spectrum is consistent with no spectral distortion. For the hep neutrino flux, we set a 90% C.L. upper limit of 40x10(3) cm(-2) x s(-1), which is 4.3 times the BP2000 SSM prediction.
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Affiliation(s)
- S Fukuda
- Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
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16
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Fukuda S, Fukuda Y, Ishitsuka M, Kajita T, Kameda J, Kaneyuki K, Kobayashi K, Koshio Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Obayashi Y, Okada A, Okumura K, Sakurai N, Shiozawa M, Suzuki Y, Takeuchi H, Takeuchi Y, Toshito T, 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, Takemori D. Tau neutrinos favored over sterile neutrinos in atmospheric muon neutrino oscillations. Phys Rev Lett 2000; 85:3999-4003. [PMID: 11056609 DOI: 10.1103/physrevlett.85.3999] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2000] [Indexed: 05/23/2023]
Abstract
The previously published atmospheric neutrino data did not distinguish whether muon neutrinos were oscillating into tau neutrinos or sterile neutrinos, as both hypotheses fit the data. Using data recorded in 1100 live days of the Super-Kamiokande detector, we use three complementary data samples to study the difference in zenith angle distribution due to neutral currents and matter effects. We find no evidence favoring sterile neutrinos, and reject the hypothesis at the 99% confidence level. On the other hand, we find that oscillation between muon and tau neutrinos suffices to explain all the results in hand.
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Affiliation(s)
- S Fukuda
- Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
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