A Search for Nucleon Decay via $n \rightarrow \bar{\nu} \pi^{0}$ and $p \rightarrow \bar{\nu} \pi^{+}$ in Super-Kamiokande

A. Kibayashi; A. Minamino; A. Renshaw; A. Takeda; A. T. Suzuki; B. S. Yang; C. Ishihara; C. K. Jung; C. Regis; C. W. Walter

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arxiv 1305.4391 v1 pith:UZQSXAK4 submitted 2013-05-19 hep-ex

A Search for Nucleon Decay via n rightarrow bar{ν} π⁰ and p rightarrow bar{ν} π⁺ in Super-Kamiokande

Super-Kamiokande Collaboration: K. Abe , Y. Hayato , T. Iida , K. Iyogi , J. Kameda , Y. Koshio , Y. Kozuma , Ll. Marti

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M. Miura S. Moriyama M. Nakahata S. Nakayama Y. Obayashi H. Sekiya M. Shiozawa Y. Suzuki A. Takeda Y. Takenaga K. Ueno K. Ueshima S. Yamada T. Yokozawa C. Ishihara H. Kaji T. Kajita K. Kaneyuki K. P. Lee T. McLachlan K. Okumura Y. Shimizu N. Tanimoto E. Kearns M. Litos J. L. Raaf J. L. Stone L. R. Sulak M. Goldhaber K. Bays W. R. Kropp S. Mine C. Regis A. Renshaw M. B. Smy H. W. Sobel K. S. Ganezer J. Hill W. E. Keig J. S. Jang J. Y. Kim I. T. Lim J. B. Albert K. Scholberg C. W. Walter R. Wendell T. M. Wongjirad T. Ishizuka S. Tasaka J. G. Learned S. Matsuno S. N. Smith T. Hasegawa T. Ishida T. Ishii T. Kobayashi T. Nakadaira K. Nakamura K. Nishikawa Y. Oyama K. Sakashita T. Sekiguchi T. Tsukamoto A. T. Suzuki Y. Takeuchi M. Ikeda A. Minamino T. Nakaya Y. Fukuda Y. Itow G. Mitsuka T. Tanaka C. K. Jung G. D. Lopez I. Taylor C. Yanagisawa H. Ishino A. Kibayashi S. Mino T. Mori M. Sakuda H. Toyota Y. Kuno M. Yoshida S. B. Kim B. S. Yang H. Okazawa Y. Choi K. Nishijima M. Koshiba M. Yokoyama Y. Totsuka K. Martens J. Schuemann M. R. Vagins S. Chen Y. Heng Z. Yang H. Zhang D. Kielczewska P. Mijakowski K. Connolly M. Dziomba E. Thrane R. J. Wilkes

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keywords antineutrinolifetimepartialdecaynucleonpipluspizeroplus

verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved

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We present the results of searches for nucleon decay via bound neutron to antineutrino plus pizero and proton to antineutrino plus piplus using data from a combined 172.8 kiloton-years exposure of Super-Kamiokande-I, -II, and -III. We set lower limits on the partial lifetime for each of these modes. For antineutrino pizero, the partial lifetime is >1.1x10^{33} years; for antineutrino piplus, the partial lifetime is >3.9x10^{32} years at 90% confidence level.

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