Search for proton decay via p → e+ π0 in a large water cherenkov detector

M. Shiozawa, B. Viren, Y. Fukuda, T. Hayakawa, E. Ichihara, K. Inoue, K. Ishihara, Hirokazu Ishino, Y. Itow, T. Kajita, J. Kameda, S. Kasuga, K. Kobayashi, Y. Kobayashi, Yusuke Koshio, M. Miura, M. Nakahata, S. Nakayama, A. Okada, M. Oketa & 104 others K. Okumura, M. Ota, N. Sakurai, Y. Suzuki, Y. Takeuchi, Y. Totsuka, S. Yamada, M. Earl, A. Habig, E. Kearns, M. D. Messier, K. Scholberg, J. L. Stone, L. R. Sulak, C. W. Walter, M. Goldhaber, T. Barszczak, W. Gajewski, P. G. Halverson, J. Hsu, W. R. Kropp, L. R. Price, F. Reines, H. W. Sobel, M. R. Vagins, K. S. Ganezer, W. E. Keig, R. W. Ellsworth, S. Tasaka, J. W. Flanagan, A. Kibayashi, J. G. Learned, S. Matsuno, V. Stenger, D. Takemori, T. Ishii, J. Kanzaki, T. Kobayashi, K. Nakamura, K. Nishikawa, Y. Oyama, A. Sakai, Makoto Sakuda, O. Sasaki, S. Echigo, M. Kohama, A. T. Suzuki, T. J. Haines, E. Blaufuss, R. Sanford, R. Svoboda, M. L. Chen, Z. Conner, J. A. Goodman, G. W. Sullivan, M. Mori, J. Hill, C. K. Jung, K. Martens, C. Mauger, C. McGrew, E. Sharkey, C. Yanagisawa, W. Doki, T. Ishizuka, Y. Kitaguchi, H. Koga, K. Miyano, H. Okazawa, C. Saji, M. Takahata, A. Kusano, Y. Nagashima, M. Takita, T. Yamaguchi, M. Yoshida, S. B. Kim, M. Etoh, K. Fujita, A. Hasegawa, T. Hasegawa, S. Hatakeyama, T. Iwamoto, T. Kinebuchi, M. Koga, T. Maruyama, H. Ogawa, A. Suzuki, F. Tsushima, M. Koshiba, M. Nemoto, K. Nishijima, T. Futagami, Y. Hayato, Y. Kanaya, K. Kaneyuki, Y. Watanabe, D. Kielczewska, R. Doyle, J. George, A. Stachyra, L. Wai, J. Wilkes, K. Young

Research output: Contribution to journalArticle

119 Citations (Scopus)

Abstract

We have searched for proton decay via p → e+ π0 using data from a 25.5 kton · yr exposure of the Super-Kamiokande detector. We find no candidate events with an expected background induced by atmospheric neutrinos of 0.1 events. From these data, we set a lower limit on the partial lifetime of the proton τ/Bp→e+π0 to be 1.6 × 1033 years at a 90% confidence level.

Original languageEnglish
Pages (from-to)3319-3323
Number of pages5
JournalPhysical Review Letters
Volume81
Issue number16
Publication statusPublished - Oct 19 1998
Externally publishedYes

Fingerprint

protons
detectors
decay
water
confidence
neutrinos
life (durability)

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Shiozawa, M., Viren, B., Fukuda, Y., Hayakawa, T., Ichihara, E., Inoue, K., ... Young, K. (1998). Search for proton decay via p → e+ π0 in a large water cherenkov detector. Physical Review Letters, 81(16), 3319-3323.

Search for proton decay via p → e+ π0 in a large water cherenkov detector. / Shiozawa, M.; Viren, B.; Fukuda, Y.; Hayakawa, T.; Ichihara, E.; Inoue, K.; Ishihara, K.; Ishino, Hirokazu; Itow, Y.; Kajita, T.; Kameda, J.; Kasuga, S.; Kobayashi, K.; Kobayashi, Y.; Koshio, Yusuke; Miura, M.; Nakahata, M.; Nakayama, S.; Okada, A.; Oketa, M.; Okumura, K.; Ota, M.; Sakurai, N.; Suzuki, Y.; Takeuchi, Y.; Totsuka, Y.; Yamada, S.; Earl, M.; Habig, A.; Kearns, E.; Messier, M. D.; Scholberg, K.; Stone, J. L.; Sulak, L. R.; Walter, C. W.; Goldhaber, M.; Barszczak, T.; Gajewski, W.; Halverson, P. G.; Hsu, J.; Kropp, W. R.; Price, L. R.; Reines, F.; Sobel, H. W.; Vagins, M. R.; Ganezer, K. S.; Keig, W. E.; Ellsworth, R. W.; Tasaka, S.; Flanagan, J. W.; Kibayashi, A.; Learned, J. G.; Matsuno, S.; Stenger, V.; Takemori, D.; Ishii, T.; Kanzaki, J.; Kobayashi, T.; Nakamura, K.; Nishikawa, K.; Oyama, Y.; Sakai, A.; Sakuda, Makoto; Sasaki, O.; Echigo, S.; Kohama, M.; Suzuki, A. T.; Haines, T. J.; Blaufuss, E.; Sanford, R.; Svoboda, R.; Chen, M. L.; Conner, Z.; Goodman, J. A.; Sullivan, G. W.; Mori, M.; Hill, J.; Jung, C. K.; Martens, K.; Mauger, C.; McGrew, C.; Sharkey, E.; Yanagisawa, C.; Doki, W.; Ishizuka, T.; Kitaguchi, Y.; Koga, H.; Miyano, K.; Okazawa, H.; Saji, C.; Takahata, M.; Kusano, A.; Nagashima, Y.; Takita, M.; Yamaguchi, T.; Yoshida, M.; Kim, S. B.; Etoh, M.; Fujita, K.; Hasegawa, A.; Hasegawa, T.; Hatakeyama, S.; Iwamoto, T.; Kinebuchi, T.; Koga, M.; Maruyama, T.; Ogawa, H.; Suzuki, A.; Tsushima, F.; Koshiba, M.; Nemoto, M.; Nishijima, K.; Futagami, T.; Hayato, Y.; Kanaya, Y.; Kaneyuki, K.; Watanabe, Y.; Kielczewska, D.; Doyle, R.; George, J.; Stachyra, A.; Wai, L.; Wilkes, J.; Young, K.

In: Physical Review Letters, Vol. 81, No. 16, 19.10.1998, p. 3319-3323.

Research output: Contribution to journalArticle

Shiozawa, M, Viren, B, Fukuda, Y, Hayakawa, T, Ichihara, E, 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, Okada, A, Oketa, M, Okumura, K, Ota, M, Sakurai, N, Suzuki, Y, Takeuchi, Y, Totsuka, Y, Yamada, S, Earl, M, Habig, A, Kearns, E, Messier, MD, Scholberg, K, Stone, JL, Sulak, LR, Walter, CW, Goldhaber, M, Barszczak, T, Gajewski, W, Halverson, PG, Hsu, J, Kropp, WR, Price, LR, Reines, F, Sobel, HW, Vagins, MR, Ganezer, KS, Keig, WE, Ellsworth, RW, Tasaka, S, Flanagan, JW, Kibayashi, A, Learned, JG, Matsuno, S, Stenger, V, 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, Sanford, R, Svoboda, R, Chen, ML, Conner, Z, Goodman, JA, Sullivan, GW, Mori, M, Hill, J, Jung, CK, Martens, K, Mauger, C, McGrew, C, Sharkey, E, Yanagisawa, C, Doki, W, Ishizuka, T, Kitaguchi, Y, Koga, H, Miyano, K, Okazawa, H, Saji, C, Takahata, M, Kusano, A, Nagashima, Y, Takita, M, Yamaguchi, T, Yoshida, M, Kim, SB, Etoh, M, Fujita, K, Hasegawa, A, Hasegawa, T, Hatakeyama, S, Iwamoto, T, Kinebuchi, T, Koga, M, Maruyama, T, Ogawa, H, Suzuki, A, Tsushima, F, Koshiba, M, Nemoto, M, Nishijima, K, Futagami, T, Hayato, Y, Kanaya, Y, Kaneyuki, K, Watanabe, Y, Kielczewska, D, Doyle, R, George, J, Stachyra, A, Wai, L, Wilkes, J & Young, K 1998, 'Search for proton decay via p → e+ π0 in a large water cherenkov detector', Physical Review Letters, vol. 81, no. 16, pp. 3319-3323.
Shiozawa M, Viren B, Fukuda Y, Hayakawa T, Ichihara E, Inoue K et al. Search for proton decay via p → e+ π0 in a large water cherenkov detector. Physical Review Letters. 1998 Oct 19;81(16):3319-3323.
Shiozawa, M. ; Viren, B. ; Fukuda, Y. ; Hayakawa, T. ; Ichihara, E. ; Inoue, K. ; Ishihara, K. ; Ishino, Hirokazu ; Itow, Y. ; Kajita, T. ; Kameda, J. ; Kasuga, S. ; Kobayashi, K. ; Kobayashi, Y. ; Koshio, Yusuke ; Miura, M. ; Nakahata, M. ; Nakayama, S. ; Okada, A. ; Oketa, M. ; Okumura, K. ; Ota, M. ; Sakurai, N. ; Suzuki, Y. ; Takeuchi, Y. ; Totsuka, Y. ; Yamada, S. ; Earl, M. ; Habig, A. ; Kearns, E. ; Messier, M. D. ; Scholberg, K. ; Stone, J. L. ; Sulak, L. R. ; Walter, C. W. ; Goldhaber, M. ; Barszczak, T. ; Gajewski, W. ; Halverson, P. G. ; Hsu, J. ; Kropp, W. R. ; Price, L. R. ; Reines, F. ; Sobel, H. W. ; Vagins, M. R. ; Ganezer, K. S. ; Keig, W. E. ; Ellsworth, R. W. ; Tasaka, S. ; Flanagan, J. W. ; Kibayashi, A. ; Learned, J. G. ; Matsuno, S. ; Stenger, V. ; Takemori, D. ; Ishii, T. ; Kanzaki, J. ; Kobayashi, T. ; Nakamura, K. ; Nishikawa, K. ; Oyama, Y. ; Sakai, A. ; Sakuda, Makoto ; Sasaki, O. ; Echigo, S. ; Kohama, M. ; Suzuki, A. T. ; Haines, T. J. ; Blaufuss, E. ; Sanford, R. ; Svoboda, R. ; Chen, M. L. ; Conner, Z. ; Goodman, J. A. ; Sullivan, G. W. ; Mori, M. ; Hill, J. ; Jung, C. K. ; Martens, K. ; Mauger, C. ; McGrew, C. ; Sharkey, E. ; Yanagisawa, C. ; Doki, W. ; Ishizuka, T. ; Kitaguchi, Y. ; Koga, H. ; Miyano, K. ; Okazawa, H. ; Saji, C. ; Takahata, M. ; Kusano, A. ; Nagashima, Y. ; Takita, M. ; Yamaguchi, T. ; Yoshida, M. ; Kim, S. B. ; Etoh, M. ; Fujita, K. ; Hasegawa, A. ; Hasegawa, T. ; Hatakeyama, S. ; Iwamoto, T. ; Kinebuchi, T. ; Koga, M. ; Maruyama, T. ; Ogawa, H. ; Suzuki, A. ; Tsushima, F. ; Koshiba, M. ; Nemoto, M. ; Nishijima, K. ; Futagami, T. ; Hayato, Y. ; Kanaya, Y. ; Kaneyuki, K. ; Watanabe, Y. ; Kielczewska, D. ; Doyle, R. ; George, J. ; Stachyra, A. ; Wai, L. ; Wilkes, J. ; Young, K. / Search for proton decay via p → e+ π0 in a large water cherenkov detector. In: Physical Review Letters. 1998 ; Vol. 81, No. 16. pp. 3319-3323.
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TY - JOUR

T1 - Search for proton decay via p → e+ π0 in a large water cherenkov detector

AU - Shiozawa, M.

AU - Viren, B.

AU - Fukuda, Y.

AU - Hayakawa, T.

AU - Ichihara, E.

AU - Inoue, K.

AU - Ishihara, K.

AU - Ishino, Hirokazu

AU - Itow, Y.

AU - Kajita, T.

AU - Kameda, J.

AU - Kasuga, S.

AU - Kobayashi, K.

AU - Kobayashi, Y.

AU - Koshio, Yusuke

AU - Miura, M.

AU - Nakahata, M.

AU - Nakayama, S.

AU - Okada, A.

AU - Oketa, M.

AU - Okumura, K.

AU - Ota, M.

AU - Sakurai, N.

AU - Suzuki, Y.

AU - Takeuchi, Y.

AU - Totsuka, Y.

AU - Yamada, S.

AU - Earl, M.

AU - Habig, A.

AU - Kearns, E.

AU - Messier, M. D.

AU - Scholberg, K.

AU - Stone, J. L.

AU - Sulak, L. R.

AU - Walter, C. W.

AU - Goldhaber, M.

AU - Barszczak, T.

AU - Gajewski, W.

AU - Halverson, P. G.

AU - Hsu, J.

AU - Kropp, W. R.

AU - Price, L. R.

AU - Reines, F.

AU - Sobel, H. W.

AU - Vagins, M. R.

AU - Ganezer, K. S.

AU - Keig, W. E.

AU - Ellsworth, R. W.

AU - Tasaka, S.

AU - Flanagan, J. W.

AU - Kibayashi, A.

AU - Learned, J. G.

AU - Matsuno, S.

AU - Stenger, V.

AU - Takemori, D.

AU - Ishii, T.

AU - Kanzaki, J.

AU - Kobayashi, T.

AU - Nakamura, K.

AU - Nishikawa, K.

AU - Oyama, Y.

AU - Sakai, A.

AU - Sakuda, Makoto

AU - Sasaki, O.

AU - Echigo, S.

AU - Kohama, M.

AU - Suzuki, A. T.

AU - Haines, T. J.

AU - Blaufuss, E.

AU - Sanford, R.

AU - Svoboda, R.

AU - Chen, M. L.

AU - Conner, Z.

AU - Goodman, J. A.

AU - Sullivan, G. W.

AU - Mori, M.

AU - Hill, J.

AU - Jung, C. K.

AU - Martens, K.

AU - Mauger, C.

AU - McGrew, C.

AU - Sharkey, E.

AU - Yanagisawa, C.

AU - Doki, W.

AU - Ishizuka, T.

AU - Kitaguchi, Y.

AU - Koga, H.

AU - Miyano, K.

AU - Okazawa, H.

AU - Saji, C.

AU - Takahata, M.

AU - Kusano, A.

AU - Nagashima, Y.

AU - Takita, M.

AU - Yamaguchi, T.

AU - Yoshida, M.

AU - Kim, S. B.

AU - Etoh, M.

AU - Fujita, K.

AU - Hasegawa, A.

AU - Hasegawa, T.

AU - Hatakeyama, S.

AU - Iwamoto, T.

AU - Kinebuchi, T.

AU - Koga, M.

AU - Maruyama, T.

AU - Ogawa, H.

AU - Suzuki, A.

AU - Tsushima, F.

AU - Koshiba, M.

AU - Nemoto, M.

AU - Nishijima, K.

AU - Futagami, T.

AU - Hayato, Y.

AU - Kanaya, Y.

AU - Kaneyuki, K.

AU - Watanabe, Y.

AU - Kielczewska, D.

AU - Doyle, R.

AU - George, J.

AU - Stachyra, A.

AU - Wai, L.

AU - Wilkes, J.

AU - Young, K.

PY - 1998/10/19

Y1 - 1998/10/19

N2 - We have searched for proton decay via p → e+ π0 using data from a 25.5 kton · yr exposure of the Super-Kamiokande detector. We find no candidate events with an expected background induced by atmospheric neutrinos of 0.1 events. From these data, we set a lower limit on the partial lifetime of the proton τ/Bp→e+π0 to be 1.6 × 1033 years at a 90% confidence level.

AB - We have searched for proton decay via p → e+ π0 using data from a 25.5 kton · yr exposure of the Super-Kamiokande detector. We find no candidate events with an expected background induced by atmospheric neutrinos of 0.1 events. From these data, we set a lower limit on the partial lifetime of the proton τ/Bp→e+π0 to be 1.6 × 1033 years at a 90% confidence level.

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VL - 81

SP - 3319

EP - 3323

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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