Search for proton decay via <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>p</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mi>μ</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math> in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>0.31</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mrow><mml:mtext mathvariant="bold">megaton</mml:mtext><mml:mo>·</mml:mo><mml:mtext mathvariant="bold">years</mml:mtext></mml:mrow></mml:mrow></mml:math> exposure of the Super-Kamiokande water Cherenkov detector

K. Abe; Y. Haga; Y. Hayato; M. Ikeda; K. Iyogi; J. Kameda; Y. Kishimoto; M. Miura; S. Moriyama; M. Nakahata; Tomoki NAKAJIMA; Y. Nakano; S. Nakayama; A. Orii; H. Sekiya; M. Shiozawa; A. Takeda; H. Tanaka; T. Tomura; R. A. Wendell; R. Akutsu; T. J. Irvine; T. Kajita; K. Kaneyuki; Y. Nishimura; E. Richard; K. Okumura; L. Labarga; P. Fernández; J. Gustafson; C. Kachulis; E. Kearns; J. L. Raaf; J. L. Stone; L. Sulak; S. Berkman; C. Nantais; H. A. Tanaka; S. Tobayama; M. Goldhaber; W. R. Kropp; S. Mine; P. Weatherly; M. Smy; H. W. Sobel; Volodymyr Takhistov; K. S. Ganezer; B. L. Hartfiel; J. Hill; Nguyễn Thị Hồng; J. Y. Kim; I. T. Lim; R. G. Park; A. Himmel; Z. Li; Erin O’Sullivan; K. Scholberg; C. W. Walter; T. Wongjirad; T. Ishizuka; S. Tasaka; J. S. Jang; J. G. Learned; S. Matsuno; S. N. Smith; M. Friend; T. Hasegawa; Toru Ishida; T. Ishii; T. Kobayashi; T. Nakadaira; K. Nakamura; Y. Oyama; K. Sakashita; T. Sekiguchi; T. Tsukamoto; A. T. Suzuki; Y. Takeuchi; T. Yano; S. Cao; T. Hiraki; S. Hirota; K. Huang; T. Kikawa; A. Minamino; T. Nakaya; K. Suzuki; Y. Fukuda; K. Choi; Y. Itow; T. Suzuki; P. Mijakowski; K. Frankiewicz; J. Hignight; J. Imber; C. K. Jung; X. Li; J. L. Palomino; M. J. Wilking; C. Yanagisawa; D. Fukuda; H. Ishino; T. Kayano; A. Kibayashi; Y. Koshio; T. Mori; M. Sakuda; Chenyuan Xu; Y. Kuno; R. Tacik; S. B. Kim; H. Okazawa; Y. Choi; K. Nishijima; M. Koshiba; Y. Totsuka; Y. Suda; M. Yokoyama; C. Bronner; M. Hartz; K. Martens; Ll. Marti; Y. Suzuki; M. R. Vagins; J. F. Martin; A. Konaka; S. Chen; Y. Zhang; R. J. Wilkes

doi:10.1103/physrevd.95.012004

Search for proton decay via <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>p</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mi>μ</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math> in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>0.31</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mrow><mml:mtext mathvariant="bold">megaton</mml:mtext><mml:mo>·</mml:mo><mml:mtext mathvariant="bold">years</mml:mtext></mml:mrow></mml:mrow></mml:math> exposure of the Super-Kamiokande water Cherenkov detector

K. Abe(The University of Tokyo), Y. Haga(The University of Tokyo), Y. Hayato(Kavli Institute for the Physics and Mathematics of the Universe), M. Ikeda(The University of Tokyo), K. Iyogi(The University of Tokyo), J. Kameda(Kavli Institute for the Physics and Mathematics of the Universe), Y. Kishimoto(The University of Tokyo), M. Miura(Kavli Institute for the Physics and Mathematics of the Universe), S. Moriyama(The University of Tokyo), M. Nakahata(The University of Tokyo), Tomoki NAKAJIMA(The University of Tokyo), Y. Nakano(The University of Tokyo), S. Nakayama(The University of Tokyo), A. Orii(The University of Tokyo), H. Sekiya(The University of Tokyo), M. Shiozawa(Kavli Institute for the Physics and Mathematics of the Universe), A. Takeda(Kavli Institute for the Physics and Mathematics of the Universe), H. Tanaka(University of British Columbia), T. Tomura(Kavli Institute for the Physics and Mathematics of the Universe), R. A. Wendell(Kavli Institute for the Physics and Mathematics of the Universe), R. Akutsu(The University of Tokyo), T. J. Irvine(The University of Tokyo), T. Kajita(The University of Tokyo), K. Kaneyuki(Kavli Institute for the Physics and Mathematics of the Universe), Y. Nishimura(Institute for Cosmic Ray Research), E. Richard(Institute for Cosmic Ray Research), K. Okumura(The University of Tokyo), L. Labarga(Universidad Autónoma de Madrid), P. Fernández(Universidad Autónoma de Madrid), J. Gustafson(Boston University), C. Kachulis(Boston University), E. Kearns(Boston University), J. L. Raaf(Boston University), J. L. Stone(Kavli Institute for the Physics and Mathematics of the Universe), L. Sulak(Boston University), S. Berkman(University of British Columbia), C. Nantais(University of British Columbia), H. A. Tanaka(University of British Columbia), S. Tobayama(University of British Columbia), M. Goldhaber(Brookhaven National Laboratory), W. R. Kropp(University of California, Irvine), S. Mine(University of California, Irvine), P. Weatherly(University of California, Irvine), M. Smy(The University of Tokyo), H. W. Sobel(The University of Tokyo), Volodymyr Takhistov(University of California, Irvine), K. S. Ganezer(California State University, Dominguez Hills), B. L. Hartfiel(California State University, Dominguez Hills), J. Hill(California State University, Dominguez Hills), Nguyễn Thị Hồng(Chonnam National University), J. Y. Kim(Chonnam National University), I. T. Lim(Chonnam National University), R. G. Park(Chonnam National University), A. Himmel(Duke University), Z. Li(Duke University), Erin O’Sullivan(Duke University), K. Scholberg(Duke University), C. W. Walter(The University of Tokyo), T. Wongjirad(Duke University), T. Ishizuka(Fukuoka Institute of Technology Junior College), S. Tasaka(Gifu University), J. S. Jang(Gwangju Institute of Science and Technology), J. G. Learned(University of Hawaii System), S. Matsuno(University of Hawaii System), S. N. Smith(University of Hawaii System), M. Friend(High Energy Accelerator Research Organization), T. Hasegawa(High Energy Accelerator Research Organization), Toru Ishida(High Energy Accelerator Research Organization), T. Ishii(High Energy Accelerator Research Organization), T. Kobayashi(High Energy Accelerator Research Organization), T. Nakadaira(High Energy Accelerator Research Organization), K. Nakamura(The University of Tokyo), Y. Oyama(High Energy Accelerator Research Organization), K. Sakashita(High Energy Accelerator Research Organization), T. Sekiguchi(High Energy Accelerator Research Organization), T. Tsukamoto(High Energy Accelerator Research Organization), A. T. Suzuki(Kobe University), Y. Takeuchi(Kobe University), T. Yano(Kobe University), S. Cao(Kyoto University), T. Hiraki(Kyoto University), S. Hirota(Kyoto University), K. Huang(Kyoto University), T. Kikawa(Kyoto University), A. Minamino(Kyoto University), T. Nakaya(Kavli Institute for the Physics and Mathematics of the Universe), K. Suzuki(Kyoto University), Y. Fukuda(Miyagi University of Education), K. Choi(Nagoya University), Y. Itow(Nagoya University), T. Suzuki(Nagoya University), P. Mijakowski(National Centre for Nuclear Research), K. Frankiewicz(National Centre for Nuclear Research), J. Hignight(Stony Brook University), J. Imber(State University of New York), C. K. Jung(Stony Brook University), X. Li(State University of New York), J. L. Palomino(Stony Brook University), M. J. Wilking(State University of New York), C. Yanagisawa(Stony Brook University), D. Fukuda(Okayama University of Science), H. Ishino(Okayama University of Science), T. Kayano(Okayama University of Science), A. Kibayashi(Okayama University of Science), Y. Koshio(Okayama University of Science), T. Mori(Okayama University of Science), M. Sakuda(Okayama University of Science), Chenyuan Xu(Okayama University of Science), Y. Kuno(The University of Osaka), R. Tacik(TRIUMF), S. B. Kim(Seoul National University), H. Okazawa(Shizuoka University of Welfare), Y. Choi(Sungkyunkwan University), K. Nishijima(Tokai University), M. Koshiba(Bunkyo University), Y. Totsuka(The University of Tokyo), Y. Suda(The University of Tokyo), M. Yokoyama(The University of Tokyo), C. Bronner(Kavli Institute for the Physics and Mathematics of the Universe), M. Hartz(The University of Tokyo), K. Martens(Kavli Institute for the Physics and Mathematics of the Universe), Ll. Marti(Kavli Institute for the Physics and Mathematics of the Universe), Y. Suzuki(Kavli Institute for the Physics and Mathematics of the Universe), M. R. Vagins(The University of Tokyo), J. F. Martin(University of Toronto), A. Konaka(TRIUMF), S. Chen(Tsinghua University), Y. Zhang(Tsinghua University), R. J. Wilkes(University of Washington)

Physical review. D/Physical review. D.

January 6, 2017

10.1103/physrevd.95.012004

Cited by 185Open Access

Full Text

Abstract

Proton decay is not allowed in the Standard Model but is a signature prediction of Grand Unified Theories (GUTs). The Super-Kamiokande Collaboration reports results from its rigorous search for proton decay in two channels. The non-observation of proton decay sets new lower bounds on the proton lifetime and imposes stringent constraints on possible GUT and other Beyond the Standard Model scenarios.

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