Search for proton decay through p -> (nu)over-barK(+) in a large water Cherenkov detector

Authors
Hayato, Y Earl, M Fukuda, Y Hayakawa, T Inoue, K Ishihara, K Ishino, H Itow, Y Kajita, T Kameda, J Kasuga, S Kobayashi, K Kobayashi, Y Koshio, Y Miura, M Nakahata, M Nakayama, S Obayashi, Y Okada, A Okumura, K Sakurai, N Shiozawa, M Suzuki, Y Takeuchi, K Takeuchi, Y Totsuka, Y Yamada, S 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 Stenger, VJ Takemori, D Ishii, T Kanzaki, J Kobayashi, T Nakamura, K Nishikawa, K Oyama, Y Sakai, A Sakuda, M Sasaki, O Echigo, S Kohama, M Suzuki, AT Haines, TJ Blaufuss, E Kim, BK Sanford, R Svoboda, R Chen, ML Goodman, JA Sullivan, GW Hill, J Jung, CK Martens, K Mauger, C McGrew, C Sharkey, E Viren, B Yanagisawa, C Doki, W Kirisawa, M Inaba, S Miyano, K Okazawa, H Saji, C Takahashi, M Takahata, M Higuchi, K Nagashima, Y Takita, M Yamaguchi, T Yoshida, M Kim, SB Etoh, M Hasegawa, A Hasegawa, T Hatakeyama, S Iwamoto, T Koga, M Maruyama, T Ogawa, H Shirai, J Suzuki, A Tsushima, F Koshiba, M Hatakeyama, Y Koike, M Nemoto, M Nishijima, K Fujiyasu, H Futagami, T Kanaya, Y Kaneyuki, K Watanabe, Y Kielczewska, D George, JS Stachyra, AL Wai, LL Wilkes, RJ Young, KK
Citation
Y. Hayato et al., Search for proton decay through p -> (nu)over-barK(+) in a large water Cherenkov detector, PHYS REV L, 83(8), 1999, pp. 1529-1533
Citations number
17
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
8
Year of publication
1999
Pages
1529 - 1533
Database
ISI
SICI code
0031-9007(19990823)83:8<1529:SFPDTP>2.0.ZU;2-N
Abstract
We present results of a search for proton decays, p --> <(nu)over bar>K+, u sing data from a 33 kt . yr exposure of the Super-Kamiokande detector. Two decay modes of the kaon, K+ --> mu(+)nu(mu) and K+ --> pi(+)pi(0), were stu died. The data were consistent with the background expected from atmospheri c neutrinos; therefore a lower limit on the partial lifetime of the proton tau/B(p --> <(nu)over bar>K+) was found to be 6.7 X 10(32) years at 90% con fidence level.