Published October 1998
| Version v1
Journal article
Search for Proton Decay via p → e+π0 in a Large Water Cherenkov Detector
Creators
- Shiozawa, M.1
- Fukuda, Y.1
- Hayakawa, T.1
- Ichihara, E.1
- Inoue, K.1
- Ishihara, K.1
- Ishino, H.1
- Itow, Y.1
- Kajita, T.1
- Kameda, J.1
- Kasuga, S.1
- Kobayashi, K.1
- Kobayashi, Y.1
- Koshio, Y.1
- Miura, M.1
- Nakahata, M.1
- Nakayama, S.1
- Okada, A.1
- Oketa, M.1
- Okumura, K.1
- Ota, M.1
- Sakurai, N.1
- Suzuki, Y.1
- Takeuchi, Y.1
- Totsuka, Y.1
- Yamada, S.1
- Earl, M.2
- Habig, A.2
- Kearns, E.2
- Messier, M.D.2
- Scholberg, K.2
- Stone, J.L.2
- Sulak, L.R.2
- Walter, C.W.2
- Goldhaber, M.3
- Barszczak, T.4
- Gajewski, W.4
- Halverson, P.G.4
- Hsu, J.4
- Kropp, W.R.4
- Price, L.R.4
- Reines, F.4
- Sobel, H.W.4
- Vagins, M.R.4
- Haines, T.J.4
- Kielczewska, D.4
- Ganezer, K.S.5
- Keig, W.E.5
- Ellsworth, R.W.6
- Tasaka, S.7
- Flanagan, J.W.8
- Kibayashi, A.8
- Learned, J.G.8
- Matsuno, S.8
- Stenger, V.8
- Takemori, D.8
- Ishii, T.9
- Kanzaki, J.9
- Kobayashi, T.9
- Nakamura, K.9
- Nishikawa, K.9
- Oyama, Y.9
- Sakai, A.9
- Sakuda, M.9
- Sasaki, O.9
- Echigo, S.10
- Kohama, M.10
- Suzuki, A.T.10
- Haines, T.J.11
- Blaufuss, E.
- and others
- 1. Institute for Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo 188-8502 (Japan)
- 2. Department of Physics, Boston University, Boston, Massachusetts 02215 (United States)
- 3. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
- 4. Department of Physics and Astronomy, University of California---Irvine, Irvine, California 92697-4575 (United States)
- 5. Department of Physics, California State University, Dominguez Hills, Carson, California 90747 (United States)
- 6. Department of Physics, George Mason University, Fairfax, Virginia 22030 (United States)
- 7. Department of Physics, Gifu University, Gifu, Gifu 501-1193 (Japan)
- 8. Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822 (United States)
- 9. Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)
- 10. Department of Physics, Kobe University, Kobe, Hyogo 657-8501 (Japan)
- 11. Physics Division, P-23, Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States)
Description
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 1.6x1033 years at a 90% confidence level. copyright 1998 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 81
- Journal Issue
- 16
- Journal Page Range
- p. 3319-3323
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30034370
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- CHERENKOV COUNTERS; GRAND UNIFIED THEORY; LIFETIME; MONTE CARLO METHOD; NEUTRINOS; PARTICLE DECAY; PIONS NEUTRAL; POSITRONS; PROTONS
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BARYONS; BOSONS; CALCULATION METHODS; CATIONS; CHARGED PARTICLES; DECAY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; IONS; LEPTONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MATTER; MEASURING INSTRUMENTS; MESONS; NUCLEONS; PARTICLE MODELS; PIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; RADIATION DETECTORS; UNIFIED GAUGE MODELS