Search for proton decay via p-->e+pi0 and p-->micro+pi0 in a large water Cherenkov detector.

Published

Journal Article

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.

Full Text

Duke Authors

Cited Authors

  • 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; Super-Kamiokande Collaboration,

Published Date

  • April 8, 2009

Published In

Volume / Issue

  • 102 / 14

Start / End Page

  • 141801 -

PubMed ID

  • 19392425

Pubmed Central ID

  • 19392425

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.102.141801

Language

  • eng