Author: "Michael B. Smy" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Michael B. Smy"' showing total 35 results

Start Over Author "Michael B. Smy"

35 results on '"Michael B. Smy"'

1. Search for tens of MeV neutrinos associated with gamma-ray bursts in Super-Kamiokande

Author: P. Fernandez, Y. Nishimura, M. Inomoto, J. Bian, P. de Perio, G. Pronost, L. Wan, M. Lamoureux, Shintaro Ito, S. Zsoldos, Y. Takeuchi, K. Martens, J. Xia, Y. Sonoda, O. Drapier, Takatomi Yano, S. El Hedri, T. Shiozawa, Ahmed Ali, Ll. Marti, K. Nakamura, C. Xu, Hiroaki Menjo, C. Bronner, A. Konaka, T. Sekiguchi, K. S. Ganezer, M. Hartz, A. Giampaolo, B. Jamieson, N. F. Calabria, J. G. Learned, Takaaki Kajita, K. Yasutome, S. Nakayama, A. Takenaka, M. Harada, Vincenzo Berardi, William R. Kropp, S. Chen, R. G. Park, L. Ludovici, Kimihiro Okumura, Yasuhiro Takemoto, K. M. Tsui, A. Takeda, Hiromasa Tanaka, C. W. Walter, H. Okazawa, K. Okamoto, Y. Ashida, J. McElwee, S. Izumiyama, D. Barrow, Y. Fukuda, M. Ikeda, R. P. Litchfield, T. Okada, Intae Yu, N. Ogawa, Kate Scholberg, H. Miyabe, G. D. Megias, C. Simpson, Makoto Sakuda, L. Bernard, S. Samani, M. G. Catanesi, J. Y. Yang, Masaki Ishitsuka, M. Thiesse, F. d. M. Blaszczyk, Jl Stone, Yoshitaka Kuno, G. Pintaudi, K. Ohta, Hiroyuki Sekiya, F. Nova, Y. Kato, P. Weatherly, K. Abe, S. Han, T. Sugimoto, Hirokazu Ishino, Masayuki Nakahata, N. McCauley, C. M. Nantais, B. Zaldivar, T. Nakadaira, S. Sakai, E. Kearns, A. Goldsack, Michael B. Smy, M. Jakkapu, R. A. Wendell, Y. Uchida, M. Posiadala-Zezula, Y. Oyama, B. Bodur, C. Vilela, G. De Rosa, K. Sato, G. Collazuol, Luis Labarga, J. Kameda, J. Feng, D. Fukuda, T. Niwa, P. Mijakowski, P. Paganini, B. D. Xu, N. J. Griskevich, P. Mehta, T. Horai, C. K. Jung, Lester D.R. Thompson, Yusuke Koshio, D. Bravo-Berguño, S. Matsuno, T. Tsukamoto, K. Hagiwara, S. Hirota, M. Koshiba, Y. Nakajima, G.D. Barr, Yuuki Nakano, T. Mochizuki, Stephen J. Jenkins, I. T. Lim, T. Ishida, Y. Isobe, L. N. Machado, T. Boschi, John Walker, Th. A. Mueller, Hiroshi Ito, B. W. Pointon, M. Taani, R. Akutsu, A. A. Sztuc, Makoto Hasegawa, L. H. V. Anthony, Tatsuya Kikawa, Volodymyr Takhistov, Yousuke Kataoka, N. W. Prouse, S. V. Cao, A. Pritchard, M. Tsukada, M. Gonin, Yoshihiro Suzuki, Y. Nagao, A. Minamino, M. Shinoki, M. Malek, J. Y. Kim, J. L. Raaf, S. Yamamoto, T. Nakamura, S. Locke, M. Jiang, A. Coffani, Yasuhiro Kishimoto, O. Stone, Takashi Kobayashi, T. Towstego, T. Hasegawa, S. Mine, Takahiko Matsubara, K. Frankiewicz, N. Piplani, A. Orii, Mark R. Vagins, S. B. Kim, A. K. Ichikawa, K. E. Nakamura, S. Molina Sedgwick, B. Richards, Ken Sakashita, W. Ma, R. Matsumoto, B. Quilain, J. F. Martin, M. Friend, Masato Shiozawa, Y. Choi, L. Cook, A. Suzuki, Masashi Yokoyama, T. Ishizuka, Tsuyoshi Nakaya, J. S. Jang, Masahiro Kuze, R. Sasaki, Henry W. Sobel, Kyoshi Nishijima, Natalv Ospina, Shigetaka Moriyama, H. A. Tanaka, S. Imaizumi, K. Iwamoto, T. Tashiro, Manabu Tanaka, Yoshinari Hayato, C. Yanagisawa, T. Wester, Yoshitaka Itow, M. Miura, M. J. Wilking, Takashi Yoshida, F. Iacob, E. Radicioni, John Hill, D. L. Wark, Y. Takahira, R. Wang, M. Mori, F. Di Lodovico, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Super-Kamiokande, and Super-Kamiokande Collaboration
Subjects: Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, FOS: Physical sciences, Astrophysics, KAMIOKANDE, gamma ray: burst, 01 natural sciences, Fluence, Coincidence, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Positron, F03 Ultra-high energy phenomena of cosmic rays, neutrino: energy, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010303 astronomy & astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, background, High Energy Physics::Phenomenology, F22 Neutrinos from supernova remnant and other astronomical objects, network, positron, High Energy Physics::Experiment, C43 Underground experiments, Underground experiments Ultra-high energy phenomena of cosmic rays Neutrinos from supernova remnant and other astronomical objects, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Super-Kamiokande, Gamma-ray burst, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Energy (signal processing), Bar (unit)
Abstract: A search for neutrinos produced in coincidence with Gamma-Ray Bursts(GRB) was conducted with the Super-Kamiokande (SK) detector. Between December 2008 and March 2017, the Gamma-ray Coordinates Network recorded 2208 GRBs that occurred during normal SK operation. Several time windows around each GRB were used to search for coincident neutrino events. No statistically significant signal in excess of the estimated backgrounds was detected. The $\bar\nu_e$ fluence in the range from 8 MeV to 100 MeV in positron total energy for $\bar\nu_e+p\rightarrow e^{+}+n$ was found to be less than $\rm 5.07\times10^5$ cm$^{-2}$ per GRB in 90\% C.L. Upper bounds on the fluence as a function of neutrino energy were also obtained., Comment: 29 pages, 16 figures, 5 tables, accepted by PTEP
Published: 2021
Full Text: View/download PDF

2. Search for coherent charged pion production in neutrino-carbon interactions

Author: J. H. Choi, M. M. Khabibullin, Stephane T'Jampens, R. Gran, L. Whitehead, R. L. Helmer, T. Ishida, Katsuki Hiraide, S. Andringa, E. Fernandez, Takaaki Kajita, J. Y. Kim, J. Zalipska, A. Blondel, Shoei Nakayama, R. Terri, A. Ikeda, Y. Totsuka, Y. Takubo, Minoru Yoshida, S. Nawang, O. V. Mineev, C. Mariani, Y. Takeuchi, T. Nakadaira, Federico Sanchez, H. I. Jang, G. Jover, Shinya Yamada, G. Sitjes, T. Hara, Takehisa Hasegawa, K. Ishihara, K. K. Joo, K. McConnel, K. Nishikawa, Jordi Burguet-Castell, P. Novella, J. Hill, N. Tamura, Silvia Borghi, R. Schroeter, H. Yokoyama, F. Pierre, Michael B. Smy, M. Sekiguchi, J.J. Gómez-Cadenas, Y. Takenaga, Masaya Hasegawa, M. Miura, Yuichi Oyama, K. Kaneyuki, J. L. Stone, T. Inagaki, U. Dore, S. B. Kim, Makoto Sakuda, H. C. Bhang, Yu. Kudenko, J. Bouchez, M. Y. Pac, L. Ludovici, W. Wang, Koji Nakamura, Tomoyuki Maruyama, I. S. Jeong, C. Cavata, Itsuo Nakano, J. Argyriades, Toshio Namba, A. N. Khotjantsev, S. Matsuno, Masayuki Nakahata, Taichi Morita, Yasunari Suzuki, T. Kobayashi, T. Kutter, A. K. Ichikawa, H. Maesaka, Yoshitaka Itow, Masaaki Tanaka, A. Sarrat, K. Taki, Ko Okumura, F. Nova, E. J. Jeon, Hiroshi Sato, K. Asakura, P. Kitching, C. W. Walter, A. Konaka, Shigeki Aoki, S P Mikheyev, A. Cervera, C. Mauger, Kate Scholberg, J. Kameda, C. McGrew, Atsumu Suzuki, A. Okada, Y. Hayato, A. Minamino, H. G. Berns, Shoji Yamamoto, K. Hayashi, J. Mallet, Henry W. Sobel, K. Nitta, Tadayuki Takahashi, John G. Learned, Shaomin Chen, A. Tornero-Lopez, A. Rodriguez, D. Kerr, S. Likhoded, E. Sharkey, Y. Kuno, E. Kearns, C. O. Kim, Katsuhiro Kobayashi, Shigetaka Moriyama, Y. Fukuda, C. Saji, C. Yanagisawa, R. Ashie, K. O. Cho, T. Ishii, R. Nambu, X. Espinal, Y. Moriguchi, R. J. Wilkes, I. T. Lim, Masashi Yokoyama, Tsuyoshi Nakaya, J. Kubota, Masataka Iinuma, J. Yoo, Masato Shiozawa, T. Iwashita, C. K. Jung, D. Kielczewska, I. Kato, Y. Obayashi, S. Mine, M. Fechner, S. Ueda, E. Aliu, Mark R. Vagins, N. Yershov, W. R. Kropp, Yusuke Koshio, S. M. Oser, M. Ishitsuka, David William Casper, C. Mitsuda, J. Hosaka, K. K. Shiraishi, P. F. Loverre, T. Sasaki, L. R. Sulak, V. A. Matveev, Blondel, Alain, Borghi, Silvia, Cervera Villanueva, Anselmo, and Schroeter, Raphaël
Subjects: Particle physics, Meson, Physics::Instrumentation and Detectors, Neutrino-nucleus reactions, FOS: Physical sciences, General Physics and Astronomy, ddc:500.2, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, Experiment-HEP, 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Neutrino oscillation, Nuclear Experiment, Charged current, Physics, Muon, Tamura, Norio, 010308 nuclear & particles physics, Neutrino oscillations, Física, 田村, 詔生, Production (computer science), High Energy Physics::Experiment, Neutrino, Lepton
Abstract: We report the result from a search for charged-current coherent pion production induced by muon neutrinos with a mean energy of 1.3 GeV. The data are collected with a fully active scintillator detector in the K2K long-baseline neutrino oscillation experiment. No evidence for coherent pion production is observed and an upper limit of $0.60 \times 10^{-2}$ is set on the cross section ratio of coherent pion production to the total charged-current interaction at 90% confidence level. This is the first experimental limit for coherent charged pion production in the energy region of a few GeV., 5 pages, 4 figures
Published: 2021

3. Terrestrial Matter Effects from Solar Neutrino Interactions in Super-Kamiokande

Author: Michael B. Smy
Subjects: Physics, Elastic scattering, Nuclear and High Energy Physics, Particle physics, Solar neutrino, High Energy Physics::Phenomenology, Solar zenith angle, Nuclear physics, Recoil, Solar core, Physics::Space Physics, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Super-Kamiokande
Abstract: Super-Kamiokande measures the rate and spectrum of recoil electrons from 8B and hep solar neutrino-electron elastic scattering as a function of the solar zenith angle. A direct search for matter effects on neutrino oscillations results in a 2.8σ indication that the electron flavor content of solar neutrino during nighttime (N), where earth matter effects are present, exceeds that of daytime (D). An unbinned maximum likelihood fit determines the amplitude of this “day/night variation” ADN=(D−N)/[½(D+N)] to be −3.3±1.0(stat)±0.5(syst)% of the average interaction rate. An oscillation analysis determines the difference in mass2 to be 4.74−0.79+1.6×10−5 eV2, the world's most precise determination of that parameter using neutrinos. Neutrinos above a few MeV are expected to undergo resonant flavor conversion in the solar core while lower energy neutrinos do not. No significant distortions of the recoil electron spectrum due to that effect were found, but the data is consistent with the prediction.
Published: 2015
Full Text: View/download PDF

4. MATTER EFFECTS ON NEUTRINO OSCILLATIONS

Author: Michael B. Smy
Subjects: Physics, Particle physics, Neutrino, Neutrino oscillation
Published: 2017
Full Text: View/download PDF

5. Super-Kamiokandeʼs Solar ν Results

Author: Michael B. Smy
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Recoil, Scattering, Oscillation, Solar neutrino, Flux, Electron, Neutrino, Kinetic energy, Atomic and Molecular Physics, and Optics
Abstract: Super-Kamiokande observed 57,700 recoil electrons from solar 8B and hep neutrino–electron scattering between 3.489 and 19.489 MeV kinetic energy in 3,904 live days. The interaction rate is 45.1 ± 0.7 % of the rate expected from a pure ν e 8B flux of 5.25 × 10 6 / cm 2 s (and a hep flux of 7.88 × 10 3 / cm 2 s ). The observed recoil electron spectrum favors a flat suppression over distortions predicted by standard neutrino flavour oscillation parameters by 1.1 to 1.9σ. The observed day/night variation of − 2.8 ± 1.1 (stat) ± 0.5 (syst) % is consistent with zero at the 2.3σ level. The oscillation analysis of this data determines the solar neutrino mass 2 splitting Δ m 21 2 = 4.69 − 0.83 + 1.80 × 10 − 5 eV 2 , consistent within 1.5 to 2σ with KamLANDʼs anti-neutrino measurement.
Published: 2013
Full Text: View/download PDF

6. Measurement of neutrino oscillation by the K2K experiment

Author: S. Andringa, T. Nakadaira, R. Gran, Tadayuki Takahashi, Yoshitaka Itow, Makoto Sakuda, F. Nakata, K. Fujii, A. Rodriguez, D. Kerr, M. H. Ahn, U. Dore, S. Likhoded, S P Mikheyev, K. Martens, Y. Totsuka, Y. Takubo, Kate Scholberg, Y. Takeuchi, Yu. Kudenko, Shinya Yamada, H. I. Jang, S. C. Boyd, M. Okumura, A. Blondel, A. Ikeda, K. Tashiro, Itsuo Nakano, C. K. Jung, M. Sekiguchi, H. Yokoyama, F. Pierre, Minoru Yoshida, M. Kitamura, L. Whitehead, K. Taki, S. Nawang, N. Yershov, Shogo Nishiyama, O. V. Mineev, E. Sharkey, K. Kaneyuki, Hirokazu Ishino, D. Kielczewska, Shoei Nakayama, Taichi Morita, Y. Kurimoto, Hiroyuki Noumi, T. Otaki, R. Schroeter, L. Ludovici, E. J. Jeon, Takashi Kobayashi, J. Kameda, M. Onchi, Y. Yamanoi, C. Cavata, M. Sorel, Katsuki Hiraide, H. C. Bhang, P. F. Loverre, J. Bouchez, M. Y. Pac, G. Sitjes, S. Mine, C. O. Kim, I. Kato, E. Seo, A. Shima, T. Kutter, K. Hayashi, H. So, S. M. Oser, T. Ishida, J. Hill, J. Catala, A. K. Ichikawa, Tomoyuki Maruyama, T. Hara, K. K. Joo, Lawrence Sulak, P. Novella, Susumu Noda, S. Fukuda, K. Takenaka, Yoshitaka Kuno, T. Ishii, Masaaki Tanaka, F. Nova, John G. Learned, Y. Yamada, B. H. Kang, Y. Obayashi, M. Takasaki, A. Minamino, A. Tornero-Lopez, J.J. Gómez-Cadenas, Takanori Sasaki, M. Fechner, S. Echigo, C. Yanagisawa, J. Zalipska, C. McGrew, G. Jover, J.H. Kim, K. Nakamura, K. B. McConnel Mahn, S. B. Kim, V. A. Matveev, M. Minakawa, A. Cervera, C. W. Walter, Y. Takenaga, Y. Hayato, Yuichi Oyama, Masaya Hasegawa, M. Miura, G. Kume, M. Tada, David William Casper, Takehisa Hasegawa, C. Mitsuda, K. Sato, J. Hosaka, A. Suzuki, R. L. Helmer, Hyosun Kim, Katsuhiro Kobayashi, A. Sakai, Nobuyuki Sakurai, Yusuke Koshio, S. Ueda, Shoji Yamamoto, J. Mallet, S. Matsuno, H. Takeuchi, T. Ooyabu, Masayuki Nakahata, Y. Aoyama, R. Terri, R. Ashie, H. Ishii, Y. Suga, Masashi Yokoyama, J. S. Jang, G. Mitsuka, E. Aliu, H. Tanaka, A. Sarrat, Mark R. Vagins, K. K. Shiraishi, Takaaki Kajita, Masaki Ishitsuka, Kenichi Tanaka, Yoshihiro Suzuki, H. Park, Masaharu Ieiri, X. Espinal, Y. Moriguchi, Beom Jun Kim, Michael B. Smy, Y. Fukuda, T. Iwashita, R. J. Wilkes, I. Higuchi, I. T. Lim, Y. Kato, W. R. Kropp, Federico Sanchez, Toshio Namba, C. Mariani, H. Maesaka, Ko Okumura, E. Kearns, Shigeki Aoki, T. Toshito, Hiroshi Sato, K. Asakura, P. Kitching, C. Mauger, J. Argyriades, H. Nishino, S. H. Lim, A. Okada, M. Kohama, M. Takatsuki, F. Berghaus, Tsuyoshi Nakaya, C. Saji, J. Kubota, Jordi Burguet-Castell, H. G. Berns, W. Wang, Masataka Iinuma, E. Hirose, J. Yoo, K. Nishikawa, J. Y. Kim, Henry W. Sobel, K. Nitta, Y. Tanaka, Masato Shiozawa, Shaomin Chen, A. Konaka, Shigetaka Moriyama, K. O. Cho, R. Nambu, N. Tamura, Silvia Borghi, J. L. Stone, T. Inagaki, A. N. Khotjantsev, Y. Fujii, J. H. Choi, M. M. Khabibullin, Stephane T'Jampens, E. Fernandez, I. S. Jeong, and K. Ishihara
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Tamura, Norio, 010308 nuclear & particles physics, Oscillation, T2K experiment, FOS: Physical sciences, Física, Elementary particle, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Massless particle, High Energy Physics - Experiment (hep-ex), K2K experiment, 0103 physical sciences, 田村, 詔生, Neutrino, 010306 general physics, Neutrino oscillation, Lepton
Abstract: We present measurements of nu_mu disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1^{+9.2}_{-8.6} events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muon-like events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3sigma). In a two flavor oscillation scenario, the allowed Delta m^2 region at sin^2(2theta) is between 1.9 and 3.5 x 10^{-3} eV^2 at the 90% C.L. with a best-fit value of 2.8 x 10^{-3} eV^2., Comment: 40 pages, 48 figures
Published: 2006

7. THE SOLAR NEUTRINO PROBLEM AND ITS OSCILLATION SOLUTION

Author: Michael B. Smy
Subjects: Cosmic neutrino background, Physics, Nuclear and High Energy Physics, Particle physics, Neutrino detector, Solar neutrino, General Physics and Astronomy, Measurements of neutrino speed, Astronomy and Astrophysics, Neutrino astronomy, Neutrino, Solar neutrino problem, Neutrino oscillation
Abstract: The current status of solar neutrino measurements and their oscillation interpretation is reviewed.
Published: 2002
Full Text: View/download PDF

8. Measurement of the Flux and Zenith-Angle Distribution of Upward Throughgoing Muons by Super-Kamiokande

Author: L. R. Price, J. Shirai, E. Sharkey, C. K. Jung, S. Mine, M. Takahata, D. Kielczewska, J. W. Flanagan, Y. Kanaya, Hiroshi Ogawa, Takehisa Hasegawa, Y. Hayato, Y. Watanabe, R. Sanford, J. A. Goodman, Kazumasa Miyano, Minoru Yoshida, H. Okazawa, T. Iwamoto, Ken-ichiro Kobayashi, David William Casper, E. Ichihara, C. W. Walter, Yuichi Oyama, F. Tsushima, Todd Haines, W. Doki, S. Hatakeyama, Takaaki Kajita, H. Ishino, A. Sakai, Yusuke Koshio, L. Wai, Michael B. Smy, Nobuyuki Sakurai, W. E. Keig, Mark R. Vagins, Tomoyuki Maruyama, T. Kobayashi, C. Mauger, Makoto Sakuda, Junichi Kanzaki, K. Nakamura, J. Kameda, B. Viren, M. Miura, Frederick Reines, Ko Okumura, Masatoshi Koshiba, T. Hayakawa, S. Matsuno, T. Ishii, M. D. Messier, Soo-Bong Kim, S. Kasuga, Y. Fukuda, M. Goldhaber, S. Echigo, Yasunari Suzuki, K. Martens, V. J. Stenger, A. Suzuki, R. Svoboda, A. Okada, S. Tasaka, W. R. Kropp, Atsumu Suzuki, A. Kibayashi, Masayuki Nakahata, Y. Totsuka, J. L. Stone, C. Yanagisawa, K. Fujita, E. Kearns, M. L. Chen, W. Gajewski, Kate Scholberg, Kunio Inoue, C. McGrew, K. Ishihara, M. Takita, Y. Takeuchi, K. Kaneyuki, C. Saji, M. Earl, E. Blaufuss, Shinya Yamada, M. Etoh, Masato Shiozawa, K. S. Ganezer, A. L. Stachyra, John G. Learned, Yoshitaka Itow, T. Barszczak, Kyoshi Nishijima, Takashi Yamaguchi, R. W. Ellsworth, R. A. Doyle, T. Futagami, R. J. Wilkes, K. K. Young, Y. Kobayashi, G. W. Sullivan, M. Kohama, Alec Habig, J. S. George, M. Nemoto, L. R. Sulak, M. Koga, H. W. Sobel, Osamu Sasaki, D. Takemori, Shoei Nakayama, K. Nishikawa, J. Hill, Y. Nagashima, B. K. Kim, and Akira Hasegawa
Subjects: Physics, Muon, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Flux, High Energy Physics - Experiment, Nuclear physics, Distribution (mathematics), Angular distribution, Muon flux, High Energy Physics::Experiment, Atomic physics, Super-Kamiokande, Zenith, Energy (signal processing)
Abstract: A total of 614 upward through-going muons of minimum energy 1.6 GeV are observed by Super-Kamiokande during 537 detector live days. The measured muon flux is 1.74+/-0.07(stat.)+/-0.02(sys.)x10^{-13}cm^{-2}s^{-1}sr^{-1} compared to an expected flux of 1.97+/-0.44(theo.)x10^{-13}cm^{-2}s^{-1}sr^{-1}. The absolute measured flux is in agreement with the prediction within the errors. However, the zenith angle dependence of the observed upward through-going muon flux does not agree with no-oscillation predictions. The observed distortion in shape is consistent with the \nu_\mu \nu_\tau oscillation hypothesis with \sin^22\theta > 0.4 and 1x10^{-3} < \Delta m^2 < 1x10^{-1} eV^{2} at 90% confidence level., Comment: 8 pages w/ 3 figures new version contains minor fixes, as it appears in PRL
Published: 1999
Full Text: View/download PDF

9. Constraints on Neutrino Oscillation Parameters from the Measurement of Day-Night Solar Neutrino Fluxes at Super-Kamiokande

Author: Frederick Reines, K. Ishihara, T. Kobayashi, Kazumasa Miyano, M. Takita, Atsumu Suzuki, Shoei Nakayama, C. W. Walter, Todd Haines, Y. Totsuka, D. Takemori, E. Kearns, John G. Learned, W. Doki, C. K. Jung, M. Takahata, D. Kielczewska, Takaaki Kajita, H. Ishino, Y. Nagashima, T. Hasagawa, Takashi Yamaguchi, A. Suzuki, V. J. Stenger, C. Mauger, K. Nishikawa, T. Futagami, Y. Kanaya, T. Ishii, M. D. Messier, S. Tasaka, J. S. George, J. Hill, G. W. Sullivan, S. Echigo, R. A. Doyle, B. K. Kim, J. Hsu, K. Kaneyuki, P. G. Halverson, Soo-Bong Kim, M. Goldhaber, C. Saji, S. Kasuga, Y. Fukuda, R. Svoboda, M. Earl, M. Kohama, Minoru Yoshida, J. A. Goodman, W. R. Kropp, L. Wai, A. Okada, Y. Watanabe, R. Sanford, Y. Takeuchi, L. R. Sulak, R. J. Wilkes, Tomoyuki Maruyama, Shinya Yamada, Z. Conner, K. Fujita, K. K. Young, J. L. Stone, H. Okazawa, Y. Hayato, E. Blaufuss, K. Nakamura, David William Casper, C. Yanagisawa, Ken-ichiro Kobayashi, E. Ichihara, T. Iwamoto, H. W. Sobel, Michael B. Smy, S. Mine, A. Sakai, Yoshitaka Itow, M. Miura, Nobuyuki Sakurai, J. W. Flanagan, Yuichi Oyama, Hiroshi Ogawa, Masayuki Nakahata, T. Hayakawa, M. Etoh, A. L. Stachyra, Yusuke Koshio, F. Tsushima, W. E. Keig, Mark R. Vagins, B. Viren, K. S. Ganezer, J. Kameda, Y. Kobayashi, Osamu Sasaki, Masato Shiozawa, M. L. Chen, S. Hatakeyama, W. Gajewski, Kate Scholberg, R. W. Ellsworth, Ko Okumura, T. Barszczak, Masatoshi Koshiba, A. Kibayashi, Kunio Inoue, Kyoshi Nishijima, Makoto Sakuda, K. Martens, Junichi Kanzaki, C. McGrew, S. Matsuno, Yasunari Suzuki, Alec Habig, M. Koga, Akira Hasegawa, L. R. Price, J. Shirai, E. Sharkey, and M. Nemoto
Subjects: Physics, Sterile neutrino, Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, General Physics and Astronomy, FOS: Physical sciences, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, Neutrino oscillation, Super-Kamiokande
Abstract: A search for day-night variations in the solar neutrino flux resulting from neutrino oscillations has been carried out using the 504 day sample of solar neutrino data obtained at Super-Kamiokande. The absence of a significant day-night variation has set an absolute flux independent exclusion region in the two neutrino oscillation parameter space., Comment: 11 pages, 3 figures, submitted to PRL, single-spacing
Published: 1999

10. Measurement of the Solar Neutrino Energy Spectrum Using Neutrino-Electron Scattering

Author: L. R. Price, J. Shirai, D. Takemori, J. Hill, Yuichi Oyama, C. Yanagisawa, C. K. Jung, M. Takahata, M. Takita, D. Kielczewska, Y. Totsuka, E. Sharkey, Y. Nagashima, Takaaki Kajita, H. Ishino, W. E. Keig, Mark R. Vagins, C. W. Walter, R. W. Ellsworth, E. Blaufuss, Masatoshi Koshiba, F. Tsushima, M. Earl, Takashi Yamaguchi, A. Kibayashi, T. Ishii, M. D. Messier, B. K. Kim, M. Goldhaber, B. Viren, Yohei Kobayashi, M. Etoh, J. Hsu, S. Echigo, P. G. Halverson, W. R. Kropp, K. S. Ganezer, Makoto Sakuda, K. Nakamura, David William Casper, A. T. Suzuki, R. J. Wilkes, Y. Kanaya, E. Ichihara, Soo-Bong Kim, Y. Hayato, K. Fujita, C. McGrew, E. Kearns, K. K. Young, S. Kasuga, K. Martens, Y. Watanabe, A. Sakai, R. Sanford, Y. Fukuda, Masayuki Nakahata, T. Iwamoto, Y. Takeuchi, Yusuke Koshio, M. Nemoto, H. Okazawa, S. Hatakeyama, Shinya Yamada, Z. Conner, S. Nakayama, K. Kaneyuki, C. Saji, Michael B. Smy, L. R. Sulak, S. Matsuno, Junichi Kanzaki, R. A. Doyle, Yasunari Suzuki, Todd Haines, S. Mine, N. Sakurai, A. L. Stachyra, C. Mauger, Alec Habig, K. Nishikawa, M. Koga, A. Okada, J. W. Flanagan, Masato Shiozawa, M. Kohama, Hiroshi Ogawa, J. L. Stone, T. Barszczak, J. S. George, J. A. Goodman, V. J. Stenger, Takehisa Hasegawa, A. Suzuki, R. Svoboda, Ko Okumura, Kunio Inoue, T. Kobayashi, W. Gajewski, Kate Scholberg, Frederick Reines, K. Ishihara, L. Wai, Tomoyuki Maruyama, H. W. Sobel, Osamu Sasaki, Kyoshi Nishijima, T. Hayakawa, Minoru Yoshida, G. W. Sullivan, John G. Learned, M. Miura, T. Futagami, Ken-ichiro Kobayashi, Yoshitaka Itow, J. Kameda, M. L. Chen, Kazumasa Miyano, W. Doki, S. Tasaka, and Akira Hasegawa
Subjects: Physics, Particle physics, Scattering, Physics::Instrumentation and Detectors, Solar neutrino, General Physics and Astronomy, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Recoil, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino oscillation
Abstract: A measurement of the energy spectrum of recoil electrons from solar neutrino scattering in the Super--Kamiokande detector is presented. The results shown here are obtained from 504 days of data taken between the 31st of May, 1996 and the 25th of March, 1998. The shape of the measured spectrum is compared with the expectation for solar B8 neutrinos. The comparison takes into account both kinematic and detector related effects in the measurement process. The spectral shape comparison between the observation and the expectation gives a chi-square of 25.3 with 15 degrees of freedom, corresponding to a 4.6% confidence level., Comment: 12 pages, 3 figures
Published: 1999

11. Calibration of Super-Kamiokande using an electron LINAC

Author: S. Matsuno, Ko Okumura, B. Viren, Akira Hasegawa, L. R. Price, J. Shirai, C. W. Walter, Shigeki Tasaka, E. Sharkey, Hiroshi Ogawa, Takehisa Hasegawa, Y. Nagashima, B. K. Kim, W. R. Kropp, J. A. Goodman, David William Casper, E. Ichihara, Kunio Inoue, Makoto Sakuda, Soo-Bong Kim, S. Kasuga, Y. Fukuda, K. Fujita, A. Sakai, Nobuyuki Sakurai, Y. Hayato, Tomoyuki Maruyama, Takaaki Kajita, H. Ishino, Masatoshi Koshiba, A. Kibayashi, Y. Takeuchi, T. Iwamoto, A. Okada, K. Nishikawa, Shinya Yamada, Y. Totsuka, Yuichi Oyama, C. K. Jung, M. Takahata, T. Ishii, J.W Flanagan, H. Kobayashi, V. J. Stenger, S Mine, Michael B. Smy, D. Kielczewska, Y. Kobayashi, Yusuke Koshio, Z. Conner, Masayuki Nakahata, W. Gajewski, Kate Scholberg, John G. Learned, Atsumu Suzuki, F. Tsushima, A. L. Stachyra, D. Takemori, M. Etoh, E. Kearns, T. Futagami, Alec Habig, Yasunari Suzuki, J. Hsu, M. Earl, M. Koga, L. Wai, Minoru Yoshida, M. Nemoto, Frederick Reines, C. Mauger, M. Goldhaber, K. S. Ganezer, G. W. Sullivan, K. Kaneyuki, C. Saji, Mark R. Vagins, H. Okazawa, E. Blaufuss, Masato Shiozawa, J. S. George, L. R. Sulak, R. A. Doyle, C. Yanagisawa, S. Hatakeyama, T. J. Haines, T. Barszczak, Kyoshi Nishijima, M. Miura, K. Martens, R. W. Ellsworth, Ken-ichiro Kobayashi, Y. Kanaya, J. Kameda, K. Ishihara, T. Hayakawa, M. L. Chen, Y. Watanabe, R. Sanford, M. Kohama, M. Takita, C. McGrew, Shoei Nakayama, J. Hill, J. L. Stone, Koji Nakamura, Takashi Yamaguchi, Junichi Kanzaki, H. W. Sobel, Osamu Sasaki, A. Suzuki, R. Svoboda, T. Kobayashi, P. G. Halverson, R. J. Wilkes, K. K. Young, Yoshitaka Itow, M. D. Messier, S. Echigo, Kazumasa Miyano, W. Doki, and W. E. Keig
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Solar neutrino, Detector, Solar neutrino problem, Linear particle accelerator, High Energy Physics - Experiment, Nuclear physics, Neutrino detector, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Super-Kamiokande, Instrumentation
Abstract: In order to calibrate the Super-Kamiokande experiment for solar neutrino measurements, a linear accelerator (LINAC) for electrons was installed at the detector. LINAC data were taken at various positions in the detector volume, tracking the detector response in the variables relevant to solar neutrino analysis. In particular, the absolute energy scale is now known with less than 1 percent uncertainty., Comment: 24 pages, 16 figures, Submitted to NIM A
Published: 1999
Full Text: View/download PDF

12. Evidence for Oscillation of Atmospheric Neutrinos

Author: Takaaki Kajita, H. Ishino, T. Ishii, T. Kobayashi, Alec Habig, L. Wai, J. Hsu, Tomoyuki Maruyama, Y. Totsuka, M. Koga, Ken-ichiro Kobayashi, Henry W. Sobel, S. Hatakeyama, D. Takemori, Kyoshi Nishijima, V. J. Stenger, M. Earl, Yoshitaka Itow, D. Casper, B. Viren, K. Nakamura, J. Kameda, Makoto Sakuda, A. L. Stachyra, Y. Kanaya, S. Nakayama, W. R. Kropp, N. Sakurai, Masayuki Nakahata, R. A. Doyle, M. Takita, M. L. Chen, S. Matsuno, P. G. Halverson, Akira Hasegawa, K. Martens, K. Fujita, Y. Watanabe, Frederick Reines, R. Sanford, L. R. Price, J. Shirai, W. Gajewski, Kate Scholberg, Osamu Sasaki, M. Kohama, Todd Haines, E. Sharkey, R. J. Wilkes, M. Goldhaber, Takashi Yamaguchi, C. McGrew, Yoshihiro Suzuki, C. Mauger, K. K. Young, S. Mine, C. K. Jung, M. Takahata, D. Kielczewska, J. S. George, Michael B. Smy, E. Ichihara, J. A. Goodman, A. Okada, J. Hill, J. W. Flanagan, Hiroshi Ogawa, M. Nemoto, E. Blaufuss, Kazumasa Miyano, A. T. Suzuki, A. Sakai, Takehisa Hasegawa, M. Etoh, T. Hayakawa, K. Ishihara, K. S. Ganezer, G. W. Sullivan, John G. Learned, H. Okazawa, W. Doki, T. Futagami, T. Barszczxak, R. W. Ellsworth, M. D. Messier, S. Tasaka, Masatoshi Koshiba, S. Echigo, Yuichi Oyama, F. Tsushima, Minoru Yoshida, C. Yanagisawa, A. Kibayashi, Yohei Kobayashi, Y. Nagashima, M. Miura, Ko Okumura, B. K. Kim, Kunio Inoue, K. Nishikawa, A. Suzuki, R. Svoboda, C. W. Walter, Soo-Bong Kim, S. Kasuga, Y. Fukuda, Y. Takeuchi, Shinya Yamada, Z. Conner, Masato Shiozawa, Lawrence Sulak, Junichi Kanzaki, Y. Hayato, T. Iwamoto, Yusuke Koshio, E. Kearns, K. Kaneyuki, C. Saji, J. L. Stone, W. E. Keig, and Mark R. Vagins
Subjects: Physics, Particle physics, Muon, Bilepton, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, General Physics and Astronomy, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Neutrino detector, K2K experiment, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Super-Kamiokande
Abstract: We present an analysis of atmospheric neutrino data from a 33.0 kiloton-year (535-day) exposure of the Super-Kamiokande detector. The data exhibit a zenith angle dependent deficit of muon neutrinos which is inconsistent with expectations based on calculations of the atmospheric neutrino flux. Experimental biases and uncertainties in the prediction of neutrino fluxes and cross sections are unable to explain our observation. The data are consistent, however, with two-flavor nu_mu nu_tau oscillations with sin^2(2theta)>0.82 and 5x10^-4 < delta m^2 < 6x10^-3 eV^2 at 90% confidence level., Comment: 9 pages (two-column) with 4 figures. Small corrections to Eqn.4 and Fig.3. Final version to appear in PRL
Published: 1998

13. Measurement of inclusive pi(0) production in the charged-current interactions of neutrinos in a 1.3-GeV wide band beam

Author: Tadayuki Takahashi, C. Yanagisawa, A. Rodriguez, S. Likhoded, Y. Kuno, J. Argyriades, H. Yokoyama, F. Pierre, A. Cervera, Atsumu Suzuki, Minoru Yoshida, S. Nawang, O. V. Mineev, Y. Totsuka, J. Catala, A. K. Ichikawa, Toshio Namba, Y. Takubo, Y. Takeuchi, Ko Okumura, K. O. Cho, Yuichi Oyama, H. I. Jang, A. Konaka, C. McGrew, H. W. Sobel, Shigeki Aoki, R. Schroeter, Mark R. Vagins, G. Sitjes, E. Kearns, R. Nambu, T. Nakadaira, K. Taki, P. Novella, Makoto Sakuda, Y. Hayato, Masataka Iinuma, K. K. Joo, J. Yoo, L. Whitehead, M. Ishitsuka, J. Alcaraz, F. Nova, T. Kutter, J.J. Gómez-Cadenas, M. Sekiguchi, Masato Shiozawa, K. Nishikawa, Y. Takenaga, R. Ashie, Masaaki Tanaka, M. Miura, K. Nitta, C. W. Walter, K. Kaneyuki, Katsuki Hiraide, U. Dore, N. Tamura, Silvia Borghi, E. J. Jeon, C. Saji, J. Kameda, J. L. Stone, H. Maesaka, G. Jover Mañas, L. Ludovici, Lawrence Sulak, Itsuo Nakano, C. Cavata, A. N. Khotjantsev, Y. Fujii, Y. Kurimoto, M. Sorel, Jordi Burguet-Castell, J. H. Choi, Y. Fukuda, M. M. Khabibullin, Stephane T'Jampens, R. L. Helmer, Masashi Yokoyama, T. Ishii, J. Zalipska, K. Nakamura, Yasunari Suzuki, K. Asakura, S. Andringa, T. Hara, E. Fernandez, P. Kitching, S. M. Oser, Yusuke Koshio, W. Wang, X. Espinal, Y. Moriguchi, Masayuki Nakahata, T. Ishida, Shaomin Chen, Tsuyoshi Nakaya, A. Minamino, R. J. Wilkes, Y. Yamada, I. T. Lim, R. Terri, S. B. Kim, Shigetaka Moriyama, J. Y. Kim, A. Tornero-Lopez, C. Mariani, R. Gran, H. C. Bhang, J. G. Learned, J. Bouchez, I. S. Jeong, M. Y. Pac, A. Okada, Shoei Nakayama, H. G. Berns, J. Mallet, T. Kobayashi, M. Hasegawa, Katsuhiro Kobayashi, F. Berghaus, S. Matsuno, Yu. Kudenko, K. Ishihara, Y. Aoyama, Shimpei Yamamoto, S. Mine, C. O. Kim, M. Fechner, K. B. McConnel Mahn, Michael B. Smy, Takaaki Kajita, Federico Sanchez, Kate Scholberg, Takehisa Hasegawa, N. Yershov, P. F. Loverre, W. R. Kropp, V. A. Matveev, S. Yamada, T. Iwashita, C. K. Jung, D. Kielczewska, I. Kato, Y. Obayashi, M. Tada, David William Casper, C. Mitsuda, J. Hosaka, K. K. Shiraishi, Yoshitaka Itow, S P Mikheyev, A. Blondel, and A. Ikeda
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Física, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Pion, Gargamelle, 0103 physical sciences, Muon neutrino, High Energy Physics::Experiment, Neutrino, 010306 general physics, Charged current, Lepton
Abstract: In this paper we report on the measurement of the rate of inclusive $\pi^0$ production induced by charged-current neutrino interactions in a C$_8$H$_8$ target at a mean energy of 1.3 GeV in the K2K near detector. Out of a sample of 11,606 charged current neutrino interactions, we select 479 $\pi^0$ events with two reconstructed photons. We find that the cross section for the inclusive $\pi^0$ production relative to the charged-current quasi-elastic cross section is $$\frac{\sigma_{CC\pi^0}}{\sigma_{CCQE}}=0.426\pm0.032(stat.)\pm0.035(syst.)$$ The energy dependent cross section ratio is also measured. The results are consistent with previous experiments for exclusive channels on different targets., Comment: 18 pages, 11 figures, submitted to PRD
Published: 2011

14. CONSTRAINTS ON NEUTRINO OSCILLATION PARAMETERS FROM TIME/ENERGY DEPENDENCE OF SOLAR 8<font>B</font> NEUTRINO FLUX

Author: Michael B. Smy
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Oscillation, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Flux, Astronomy and Astrophysics, Parameter space, Solar neutrino problem, Atomic and Molecular Physics, and Optics, Nuclear physics, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino oscillation
Abstract: A search for neutrino oscillation is presented using time variations and energy dependence of the observed reduction of the solar neutrino flux. No significant time variation or energy dependence has been found in 1117 days of solar neutrino data taken with the Super-Kamiokande experiment. This constrains the two-neutrino oscillation parameter space independently of the model dependence of the solar neutrino flux. The combination of Super-Kamiokande's data of the day-night variation, energy dependence and flux results in two allowed regions at 95% C.L.
Published: 2001
Full Text: View/download PDF

15. Atmospheric neutrino oscillation analysis with sub-leading effects in Super-Kamiokande I, II, and III

Author: Masato Shiozawa, Y. Choi, S. Hazama, Masashi Yokoyama, Tsuyoshi Nakaya, C. Regis, K. Nishikawa, C. K. Jung, Hirokazu Ishino, N. Tanimoto, Shoei Nakayama, Atsumu Suzuki, N. Tamura, D. Kielczewska, Y. Takeuchi, David William Casper, Y. Watanabe, J. S. Jang, K. Sakashita, R. J. Wilkes, E. Kearns, I. T. Lim, Yuichi Oyama, Takaaki Kajita, G. D. Lopez, H. Nishino, Y. Yokosawa, Yasuhiro Shimizu, Masatoshi Koshiba, J. L. Stone, Y. Totsuka, T. Nakadaira, Y. Obayashi, H. Ogawa, C. Yanagisawa, Hiroshi Watanabe, Song Chen, Makoto Sakuda, M. Goldhaber, K. Abe, W. R. Kropp, K. S. Ganezer, C. W. Walter, K. Nakamura, Yoshitaka Itow, S. Yamada, S. B. Kim, Y. Kozuma, T. Iida, J. Y. Kim, Kyoshi Nishijima, Michael Litos, Huaqiao Zhang, E. Thrane, Ko Okumura, H. Toyota, K. Connolly, A. Kibayashi, Hiroyuki Sekiya, Mark R. Vagins, Y. Fukuda, Atsushi Takeda, H. Okazawa, Masayuki Nakahata, T. McLachlan, C. Ishihara, K. Ueshima, G. Mitsuka, Shigetaka Moriyama, S. Mine, Zishuo Yang, Kate Scholberg, W. Wang, John Hill, H. Kaji, A. Minamino, T. Tsukamoto, M. Fechner, H. W. Sobel, K. Kaneyuki, T. Sekiguchi, M. Ikeda, J. G. Learned, S. Tasaka, B. S. Yang, K. Bays, W. E. Keig, M. Dziomba, Toshiyuki Tanaka, Y. Heng, T. Ishida, Tsutomu Yokozawa, Yasunari Suzuki, Takehisa Hasegawa, Minoru Yoshida, Ken-ichiro Kobayashi, Frédéric Dufour, T. Kobayashi, J. Kameda, L. R. Sulak, T. Ishizuka, Y. Takenaga, M. Miura, J. L. Raaf, Koh Ueno, Yusuke Koshio, Michael B. Smy, C. McGrew, Y. Hayato, P. Mijakowski, S. Matsuno, T. Ishii, Justin Albert, Y. Kuno, S. Mino, R. A. Wendell, K. Iyogi, J. P. Cravens, and T. Mori
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Oscillation, FOS: Physical sciences, Fermion, High Energy Physics - Experiment, Massless particle, High Energy Physics - Experiment (hep-ex), Neutrino, Atmospheric neutrino, Neutrino oscillation, Super-Kamiokande, Lepton
Abstract: We present a search for non-zero theta_{13} and deviations of sin^2 theta_{23} from 0.5 in the oscillations of atmospheric neutrino data from Super-Kamiokande -I, -II, and -III. No distortions of the neutrino flux consistent with non-zero theta_{13} are found and both neutrino mass hierarchy hypotheses are in agreement with the data. The data are best fit at Delta m^2 = 2.1 x 10^-3 eV^2, sin^2 theta_{13} = 0.0, and sin^2 theta_{23} =0.5. In the normal (inverted) hierarchy theta_{13} and Delta m^2 are constrained at the one-dimensional 90% C.L. to sin^2 theta_{13} < 0.04 (0.09) and 1.9 (1.7) x 10^-3 < Delta m^2 < 2.6 (2.7) x 10^-3 eV^2. The atmospheric mixing angle is within 0.407, 17 Pages, 14 figures. To be submitted to Phys. Rev. D Minor update to text after referee comments. Figures modified for better grayscale printing.
Published: 2010

16. Report on the Depth Requirements for a Massive Detector at Homestake

Author: Henry W. Sobel, C. W. Walter, Michael B. Smy, E. Kearns, David B. Cline, Adam Bernstein, Francesco Lanni, R. W. Kadel, K. Lande, B. T. Fleming, Joshua R. Klein, R.A. Rameika, G. W. Sullivan, R. Zwaska, David Lissauer, R. D. McKeown, Robert Svoboda, William Morse, M. Vagins, E. Blucher, M. V. Diwan, and Kate Scholberg
Subjects: Physics, Time projection chamber, Physics::Instrumentation and Detectors, business.industry, Cherenkov detector, Solar neutrino, Detector, Cosmic ray, Tracking (particle physics), law.invention, Nuclear physics, law, High Energy Physics::Experiment, Neutrino, Aerospace engineering, business, Cherenkov radiation
Abstract: This report provides the technical justification for locating a large detector underground in a US based Deep Underground Science and Engineering Laboratory. A large detector with a fiducial mass greater than 100 kTon will most likely be a multipurpose facility. The main physics justification for such a device is detection of accelerator generated neutrinos, nucleon decay, and natural sources of neutrinos such as solar, atmospheric and supernova neutrinos. The requirement on the depth of this detector will be guided by the rate of signals from these sources and the rate of backgrounds from cosmic rays over a very wide range of energies (from solar neutrino energies of 5 MeV to high energies in the range of hundreds of GeV). For the present report, we have examined the depth requirement for a large water Cherenkov detector and a liquid argon time projection chamber. There has been extensive previous experience with underground water Cherenkov detectors such as IMB, Kamioka, and most recently, Super-Kamiokande which has a fiducial mass of 22 kTon and a total mass of 50 kTon at a depth of 2700 meters-water-equivalent in a mountain. Projections for signal and background capability for a larger and deeper (or shallower) detectors of this type can be scaled from these previous detectors. The liquid argon time projection chamber has the advantage of being a very fine-grained tracking detector, which should provide enhanced capability for background rejection. We have based background rejection on reasonable estimates of track and energy resolution, and in some cases scaled background rates from measurements in water. In the current work we have taken the approach that the depth should be sufficient to suppress the cosmogenic background below predicted signal rates for either of the above two technologies. Nevertheless, it is also clear that the underground facility that we are examining must have a long life and will most likely be used either for future novel uses of the currently planned detectors or new technologies. Therefore the depth requirement also needs to be made on the basis of sound judgment regarding possible future use. In particular, the depth should be sufficient for any possible future use of these cavities or the level which will be developed for these large structures. Along with these physics justifications there are practical issues regarding the existing infrastructure at Homestake and also the stress characteristics of the Homestake rock formations. In this report we will examine the various depth choices at Homestake from the point of view of the particle and nuclear physics signatures of interest. We also have sufficient information about the existing infrastructure and the rock characteristics to narrow the choice of levels for the development of large cavities with long lifetimes. We make general remarks on desirable ground conditions for such large cavities and then make recommendations on how to start examining these levels to make a final choice. In the appendix we have outlined the initial requirements for the detectors. These requirements will undergo refinement during the course of the design. Finally, we strongly recommend that the geotechnical studies be commenced at the 4850 ft level, which we find to be the most suitable, in a timely manner.
Published: 2008
Full Text: View/download PDF

17. Solar neutrino measurements in Super-Kamiokande-II

Author: D. Kielczewska, Y. Watanabe, I. Kato, M. Sugihara, K. S. Ganezer, K. Ueshima, Y. Totsuka, H. Okazawa, Y. Takeuchi, W. Wang, T. Koike, Michael B. Smy, H. Seo, Shinya Yamada, Masatoshi Koshiba, R. Terri, T. Ishizuka, T. Sato, J. L. Raaf, R. W. Ellsworth, M. Ishitsuka, Atsushi Takeda, Toshiyuki Tanaka, Atsumu Suzuki, Alec Habig, N. Tanimoto, Mark R. Vagins, R. A. Wendell, Shantanu Desai, S. Matsuno, E. Kearns, H. Maesaka, Yueh-Feng Liu, Katsuki Hiraide, J. Dunmore, David William Casper, T. Kato, C. Mitsuda, K. Nitta, Shaomin Chen, Kyoshi Nishijima, Hiroshi Sato, Hirokazu Ishino, C. Saji, Shigetaka Moriyama, T. Iida, H. Nishino, Takaaki Kajita, Y. Gando, J. S. Jang, A. K. Ichikawa, Haruki Watanabe, A. L. Stachyra, W. R. Kropp, K. Nishikawa, K. K. Shiraishi, K. Nakamura, G. Guillian, G. Mitsuka, T. Nakadaira, C. Ishihara, M. Goldhaber, T. Iwashita, Makoto Sakuda, Shoei Nakayama, I. Higuchi, H. Ishii, Frédéric Dufour, Masayuki Nakahata, Y. Idehara, Shigeki Tasaka, K. Kaneyuki, N. Tamura, S. Dazeley, J. P. Cravens, J. L. Stone, C. W. Walter, T. J. Haines, M. Ikeda, H. W. Sobel, J. Y. Kim, Yasunari Suzuki, Michael Litos, Magdalena Malek, Lawrence Sulak, C. McGrew, S. Clark, Y. Hayato, S. Likhoded, S. Mine, Y. Kuno, Shoji Yamamoto, Masashi Yokoyama, A. Minamino, R. Svoboda, E. Thrane, Y. Obayashi, Yusuke Koshio, M. Fechner, D. W. Liu, Hiroyuki Sekiya, Soo-Bong Kim, Y. Fukuda, Kate Scholberg, Tsuyoshi Nakaya, J. Yoo, Ko Okumura, Masato Shiozawa, Y. Choi, Hiroshi Ogawa, Kunio Inoue, Takehisa Hasegawa, T. Kobayashi, D. Turcan, K. Ishihara, Yuichi Oyama, K. Abe, T. Ishii, R. J. Wilkes, I. T. Lim, C. Yanagisawa, B. S. Yang, T. Ishida, Y. Furuse, M. D. Messier, H. G. Berns, Takanori Sasaki, John G. Learned, A. Sarrat, G. W. Sullivan, Yoshitaka Itow, John Hill, Katsuhiro Kobayashi, W. E. Keig, J. Kameda, Minoru Yoshida, Zhi Deng, Y. Takenaga, Masaya Hasegawa, M. Miura, K. Washburn, S. Hatakeyama, R. Gran, C. Regis, and C. K. Jung
Subjects: Physics, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Phase (waves), Solar cycle 23, Flux, Astrophysics, Spectral line, Solar cycle, High Energy Physics - Experiment, Nuclear physics, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino oscillation, Super-Kamiokande
Abstract: The results of the second phase of the Super-Kamiokande solar neutrino measurement are presented and compared to the first phase. The solar neutrino flux spectrum and time variation as well as oscillation results are statistically consistent with the first phase and do not show spectral distortion. The time-dependent flux measurement of the combined first and second phases coincides with the full period of solar cycle 23 and shows no correlation with solar activity. The measured {sup 8}B total flux is (2.38{+-}0.05(stat.){sub -0.15}{sup +0.16}(sys.))x10{sup 6} cm{sup -2} s{sup -1} and the day-night difference is found to be (-6.3{+-}4.2(stat.){+-}3.7(sys.))%. There is no evidence of systematic tendencies between the first and second phases.
Published: 2008

18. Experimental study of the atmospheric neutrino backgrounds forp→e+π0searches in water Cherenkov detectors

Author: T. Ishii, J. H. Choi, C. W. Walter, K. McConnel, X. Espinal, Y. Moriguchi, R. J. Wilkes, I. T. Lim, J. Argyriades, Mark R. Vagins, Jordi Burguet-Castell, M. M. Khabibullin, Stephane T'Jampens, C. Yanagisawa, G. Jover, W. Wang, K. Nitta, A. Konaka, K. Kaneyuki, R. Ashie, Masashi Yokoyama, H. Yokoyama, F. Pierre, A. Cervera, Yu. Kudenko, Y. Fukuda, L. Ludovici, C. K. Jung, Yuichi Oyama, C. Cavata, Atsumu Suzuki, S. Mine, M. Sorel, T. Nakadaira, Y. Takubo, Y. Takeuchi, Tsuyoshi Nakaya, Takaaki Kajita, Y. Yamada, D. Kielczewska, E. Kearns, Masataka Iinuma, J. Yoo, Yasunari Suzuki, M. Ishitsuka, E. Fernandez, Masato Shiozawa, R. Gran, C. Saji, Makoto Sakuda, R. Schroeter, I. Kato, K. Taki, Toshio Namba, Takehisa Hasegawa, Michael B. Smy, J. Mallet, S. Matsuno, T. Kutter, M. Fechner, T. Hara, Masaaki Tanaka, C. McGrew, J. Kameda, Minoru Yoshida, A. Blondel, S. Nawang, O. V. Mineev, Y. Hayato, A. Ikeda, S. M. Oser, N. Tamura, Federico Sanchez, K. O. Cho, Tadayuki Takahashi, Y. Obayashi, G. Sitjes, Silvia Borghi, Shoji Yamamoto, P. Novella, A. Okada, J. L. Stone, A. Rodriguez, J.J. Gómez-Cadenas, Y. Takenaga, S. Likhoded, Masaya Hasegawa, M. Miura, Y. Kuno, R. Nambu, M. Sekiguchi, N. Yershov, A. N. Khotjantsev, Y. Fujii, H. G. Berns, M. Tada, David William Casper, Yoshitaka Itow, Yusuke Koshio, C. Mitsuda, C. O. Kim, J. Hosaka, W. R. Kropp, A. Tornero-Lopez, Kate Scholberg, J. G. Learned, S P Mikheyev, S. Yamada, T. Iwashita, K. Nakamura, K. K. Shiraishi, P. F. Loverre, Katsuhiro Kobayashi, I. S. Jeong, S. B. Kim, L. R. Sulak, J. Y. Kim, Masayuki Nakahata, A. K. Ichikawa, V. A. Matveev, L. Whitehead, T. Kobayashi, Katsuki Hiraide, T. Ishida, H. W. Sobel, K. Ishihara, E. J. Jeon, Shaomin Chen, Shigetaka Moriyama, Shoei Nakayama, S. Andringa, J. Catala, J. Alcaraz, F. Nova, K. K. Joo, H. C. Bhang, J. Bouchez, M. Y. Pac, C. Mariani, K. Nishikawa, U. Dore, Itsuo Nakano, Y. Kurimoto, R. L. Helmer, A. Minamino, J. Zalipska, R. Terri, Ko Okumura, Shigeki Aoki, Y. Totsuka, H. I. Jang, H. Maesaka, K. Asakura, P. Kitching, and F. Berghaus
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Cherenkov detector, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Solar neutrino problem, 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, Neutrino detector, 13. Climate action, law, 0103 physical sciences, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, 010306 general physics, Neutrino oscillation, Super-Kamiokande
Abstract: The atmospheric neutrino background for proton decay via p→e + π 0 in ring imaging water Cherenkov detectors is studied with an artificial accelerator neutrino beam for the first time. In total, 3.14 × 10 5 neutrino events corresponding to about 10 megaton-years of atmospheric neutrino interactions were collected by a 1000 ton water Cherenkov detector (KT). The KT charged-current single π 0 production data are well reproduced by simulation programs of neutrino and secondary hadronic interactions used in the Super-Kamiokande (SK) proton decay search. The obtained p→ e + π 0 background rate by the KT data for SK from the atmospheric neutrinos whose energies are below 3 GeV is 1.63 +0.42 -0.33 (stat) +0.45 -0.51 (syst)(megaton-year) -1 . This result is also relevant to possible future, megaton-scale water Cherenkov detectors.
Published: 2008
Full Text: View/download PDF

19. First Study of Neutron Tagging with a Water Cherenkov Detector

Author: Minoru Yoshida, Shoei Nakayama, Y. Totsuka, T. Tsukamoto, T. Ishii, Michael Litos, K. Ueshima, Zhi Deng, W. R. Kropp, Y. Takenaga, Yuichi Oyama, C. McGrew, S. Clark, B. S. Yang, T. Ishida, M. Miura, Y. Idehara, Y. Hayato, R. Wendel, Y. Furuse, S. Yamada, W. Wang, Y. Takeuchi, N. Tanimoto, J. Y. Kim, Shigeki Tasaka, S. Dazeley, T. Nakadaira, T. Iida, I. Higuchi, K. Abe, H. W. Sobel, K. Sakashita, T. Xue, S. Mine, Lawrence Sulak, G. Guillian, Makoto Sakuda, R. J. Wilkes, Haruki Watanabe, C. Regis, C. K. Jung, D. Kielczewska, I. T. Lim, H. Nishino, M. Fechner, M. Goldhaber, Y. Watanabe, G. Gong, A. Sarrat, I. S. Jeong, Atsumu Suzuki, C. Yanagisawa, N. Tamura, Masato Shiozawa, Y. Choi, Todd Haines, C. W. Walter, M. D. Messier, Shaomin Chen, T. Kobayashi, Y. Yokosawa, Kyoshi Nishijima, E. Kearns, Y. Obayashi, J. L. Stone, Yusuke Koshio, S. Hazama, David William Casper, R. Gran, J. S. Jang, Koji Nakamura, Shigetaka Moriyama, H. Ogawa, Hiroyuki Sekiya, Atsushi Takeda, H. G. Berns, M. Ikeda, Soo-Bong Kim, Y. Fukuda, Masashi Yokoyama, R. Svoboda, Shantanu Desai, J. Griskevich, Masayuki Nakahata, Takehisa Hasegawa, J. G. Learned, Michael B. Smy, Alec Habig, Yueh-Feng Liu, Tsuyoshi Nakaya, H. Seo, Ken-ichiro Kobayashi, Yoshitaka Itow, J. Kameda, K. K. Shiraishi, G. Mitsuka, Mark R. Vagins, Hirokazu Ishino, C. Ishihara, Frédéric Dufour, John Hill, W. E. Keig, R. Terri, A. Minamino, K. S. Ganezer, D. W. Liu, E. Thrane, H. Okazawa, Kate Scholberg, K. Ueno, A. K. Ichikawa, K. Kaneyuki, T. Sekiguchi, K. Bays, Takaaki Tanaka, Yasunari Suzuki, J. Dunmore, K. Nishikawa, Ko Okumura, A. Kibayashi, J. P. Cravens, S. Likhoded, Y. Kuno, S. Matsuno, Takaaki Kajita, Masatoshi Koshiba, Huaqiao Zhang, T. Ishizuka, and J. L. Raaf
Subjects: Physics, Cherenkov detector, Physics::Instrumentation and Detectors, Detector, FOS: Physical sciences, Astronomy and Astrophysics, Photon energy, Coincidence, Neutron temperature, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, Neutron, High Energy Physics::Experiment, Cherenkov radiation
Abstract: A first study of neutron tagging is conducted in Super--Kamiokande, a 50,000-ton water Cherenkov detector. The tagging efficiencies of thermal neutrons are evaluated in a 0.2 % GdCl$_{3}$-water solution and pure water. They are determined to be, respectively, 66.7 % for events above 3 MeV and 20 % with corresponding background probabilities of 2 $\times$ 10$^{-4}$ and 3 $\times$ 10$^{-2}$. This newly developed technique may enable water Cherenkov detectors to identify $\bar \nu_{e}$'s geological or astrophysical sources as well as those produced by commercial reactors via the delayed coincidence scheme., Comment: 17 pages, 11 figures
Published: 2008
Full Text: View/download PDF

20. A Measurement of Atmospheric Neutrino Flux Consistent with Tau Neutrino Appearance

Author: K. Kaneyuki, W. R. Kropp, R. J. Wilkes, Y. Takeuchi, Yasunari Suzuki, G. Mitsuka, I. T. Lim, T. Iwashita, Takaaki Kajita, I. Higuchi, Henry W. Sobel, K. Nitta, T. Nakadaira, Kyoshi Nishijima, A. K. Ichikawa, Michael Litos, Frédéric Dufour, M. Ishitsuka, S. B. Kim, J. Y. Kim, Atsushi Takeda, J. Kameda, Makoto Sakuda, A. Minamino, Shigetaka Moriyama, H. Ishii, Atsumu Suzuki, Shantanu Desai, Minoru Yoshida, K. Nakamura, N. Tamura, C. Regis, M. Sugihara, Y. Totsuka, C. K. Jung, Shoei Nakayama, Yuichi Oyama, J. L. Stone, D. Kielczewska, E. Kearns, T. Ishii, D. W. Liu, M. Malek, Y. Gando, C. McGrew, S. Clark, J. P. Cravens, K. Ishihara, J. Hill, K. S. Ganezer, Yusuke Koshio, I. Kato, Masayuki Nakahata, Y. Watanabe, C. Yanagisawa, H. Okazawa, Y. Takenaga, Mark R. Vagins, Masaya Hasegawa, M. Miura, C. W. Walter, J. S. Jang, K. Abe, L. R. Sulak, C. Saji, J. Zalipska, K. Nishikawa, T. Iida, Y. Obayashi, K. Ueshima, T. Sato, J. Yoo, E. Guillian, T. Ishida, Masato Shiozawa, Y. Choi, M. Goldhaber, David William Casper, R. A. Wendell, C. Mitsuda, H. Ogawa, S. Mine, W. Wang, J. G. Learned, Todd Haines, T. Koike, Kate Scholberg, Yoshitaka Itow, G. W. Sullivan, M. D. Messier, T. Kobayashi, K. K. Shiraishi, Y. Fukuda, C. Ishihara, K. Washburn, Katsuhiro Kobayashi, T. Ishizuka, Masashi Yokoyama, R. Svoboda, S. Hatakeyama, R. Gran, J. L. Raaf, Ko Okumura, H. G. Berns, R. W. Ellsworth, Tsuyoshi Nakaya, Takehisa Hasegawa, Hirokazu Ishino, R. Terri, Masatoshi Koshiba, Kunio Inoue, S. Likhoded, Y. Kuno, Takanori Sasaki, T. Kato, A. Sarrat, Michael B. Smy, H. Seo, W. E. Keig, N. Tanimoto, H. Maesaka, Hiroshi Sato, H. Nishino, Shigeki Tasaka, S. Dazeley, Y. Hayato, Alec Habig, S. Matsuno, and Shoji Yamamoto
Subjects: Physics, Quantum chromodynamics, Particle physics, Tamura, Norio, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, General Physics and Astronomy, Flux, High Energy Physics - Experiment, Nuclear physics, Angular distribution, Tau neutrino, 田村, 詔生, High Energy Physics::Experiment, Atmospheric neutrino, Neutrino, Neutrino oscillation, Charged current
Abstract: A search for the appearance of tau neutrinos from \mutau oscillations in the atmospheric neutrinos has been performed using 1489.2 days of atmospheric neutrino data from the Super-Kamiokande-I experiment. A best fit tau neutrino appearance signal of 138 $\pm$ 48 (stat.) $^{+15}_{-32}$ (sys.) events is obtained with an expectation of 78 $\pm$ 26 (sys.). The hypothesis of no tau neutrino appearance is disfavored by 2.4 sigma., Comment: 5 pages, 3 figures, 3 tables, submitted to PRL
Published: 2006

21. Three flavor neutrino oscillation analysis of atmospheric neutrinos in Super-Kamiokande

Author: T. Nakadaira, Masatoshi Koshiba, J. P. Cravens, Makoto Sakuda, C. Yanagisawa, S. Mine, Takanori Sasaki, R. A. Wendell, C. McGrew, S. Clark, Yusuke Koshio, T. Kobayashi, Mark R. Vagins, Y. Hayato, S. Likhoded, M. Goldhaber, Yuichi Oyama, Shoji Yamamoto, Yoshitaka Kuno, David William Casper, C. Mitsuda, Toshio Namba, Y. Totsuka, J. Hosaka, T. J. Haines, D. Turcan, H. Maesaka, M. Ishitsuka, Atsushi Takeda, Hiroshi Sato, T. Kato, K. Ishihara, Alec Habig, K. Washburn, Shantanu Desai, K. Nakamura, W. R. Kropp, T. Ishizuka, K. Kaneyuki, S. Matsuno, T. Ishii, K. K. Shiraishi, H. Nishino, J. Shirai, T. Iwashita, Jodi Cooley, I. Higuchi, Hirokazu Ishino, J. A. Goodman, E. Blaufuss, Y. Gando, A. L. Stachyra, Shigeki Tasaka, Masayuki Nakahata, S. Dazeley, R. W. Ellsworth, Yasunari Suzuki, C. Regis, C. K. Jung, J. S. Jang, R. J. Wilkes, I. T. Lim, Takaaki Kajita, D. Kielczewska, I. Kato, A. Sarrat, S. B. Kim, J. Y. Kim, Y. Obayashi, L. R. Sulak, M. D. Messier, S. Hatakeyama, R. Gran, C. Mauger, Yoshitaka Itow, T. Sato, A. Suzuki, A. Okada, Masashi Yokoyama, R. Svoboda, H. G. Berns, Tsuyoshi Nakaya, J. Zalipska, J. Yoo, T. Ishida, Masato Shiozawa, Y. Choi, J. G. Learned, W. E. Keig, G. W. Sullivan, Katsuhiro Kobayashi, Minoru Yoshida, Takehisa Hasegawa, Y. Takenaga, Masaya Hasegawa, M. Miura, C. W. Walter, A. Kibayashi, J. Kameda, C. W. Sterner, Henry W. Sobel, K. Nitta, Kyoshi Nishijima, Michael B. Smy, H. Seo, Shigetaka Moriyama, Shoei Nakayama, Kate Scholberg, J. Hill, Y. Fukuda, Y. Takeuchi, Shinya Yamada, N. Tamura, J. L. Stone, W. Wang, A. K. Ichikawa, Atsumu Suzuki, E. Kearns, C. Saji, Y. Watanabe, G. Mitsuka, K. S. Ganezer, H. Okazawa, E. Guillian, A. Minamino, D. W. Liu, M. Malek, Ko Okumura, Kunio Inoue, and K. Nishikawa
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Neutrino detector, Invariant mass, Weinberg angle, High Energy Physics::Experiment, Neutrino, Super-Kamiokande, Mass hierarchy, Neutrino oscillation, Particle identification, High Energy Physics - Experiment
Abstract: We report on the results of a three-flavor oscillation analysis using Super-Kamiokande~I atmospheric neutrino data, with the assumption of one mass scale dominance ($\Delta m_{12}^2$$=$0). No significant flux change due to matter effect, which occurs when neutrinos propagate inside the Earth for $\theta_{13}$$\neq$0, has been seen either in a multi-GeV $\nu_e$-rich sample or in a $\nu_\mu$-rich sample. Both normal and inverted mass hierarchy hypotheses are tested and both are consistent with observation. Using Super-Kamiokande data only, 2-dimensional 90 % confidence allowed regions are obtained: mixing angles are constrained to $\sin^2\theta_{13} < 0.14$ and $0.37 < \sin^2\theta_{23} < 0.65$ for the normal mass hierarchy. Weaker constraints, $\sin^2\theta_{13} < 0.27$ and $0.37 < \sin^2\theta_{23} < 0.69$, are obtained for the inverted mass hierarchy case., Comment: 7 figures, 3 tables
Published: 2006

22. Observation of the Anisotropy of 10 TeV Primary Cosmic Ray Nuclei Flux with the Super-Kamiokande-I Detector

Author: C. W. Walter, M. Ishitsuka, Atsushi Takeda, D. Turcan, Shantanu Desai, Y. Fukuda, K. Ishihara, K. Washburn, C. Yanagisawa, Y. Totsuka, W. Wang, J. L. Stone, T. Nakadaira, G. Mitsuka, S. Hatakeyama, R. Gran, Atsumu Suzuki, A. L. Stachyra, Michael B. Smy, Makoto Sakuda, G. Guillian, H. Okazawa, John Hill, E. Kearns, Masatoshi Koshiba, J. Griskevich, Y. Takeuchi, Shinya Yamada, Alec Habig, A. K. Ichikawa, S. Matsuno, Minoru Yoshida, R. J. Wilkes, K. Nishikawa, T. Kobayashi, M. Goldhaber, J. Shirai, Shigeki Tasaka, E. Sharkey, S. Dazeley, David William Casper, C. Mitsuda, S. Mine, T. Ishizuka, Takehisa Hasegawa, Hirokazu Ishino, J. Hosaka, H. Ogawa, Y. Takenaga, Masaya Hasegawa, M. Miura, E. Blaufuss, Y. Watanabe, J. G. Learned, A. Suzuki, C. McGrew, R. W. Ellsworth, G. W. Sullivan, Yusuke Koshio, K. Nakamura, Y. Hayato, Masashi Yokoyama, Ko Okumura, T. Ishii, K. K. Shiraishi, Katsuhiro Kobayashi, Toshio Namba, R. Svoboda, Masayuki Nakahata, Kunio Inoue, S. B. Kim, H. Maesaka, Shoji Yamamoto, K. Kaneyuki, A. Minamino, Mark R. Vagins, Hiroshi Sato, D. W. Liu, L. R. Sulak, M. Malek, H. Nishino, Yasunari Suzuki, T. Kato, K. S. Ganezer, W. Gajewski, Kate Scholberg, Tsuyoshi Nakaya, Takaaki Kajita, J. Yoo, C. K. Jung, Masato Shiozawa, D. Kielczewska, A. Kibayashi, Y. Gando, I. Kato, J. Kameda, Y. Obayashi, W. R. Kropp, T. Iwashita, I. Higuchi, C. Saji, Todd Haines, M. D. Messier, C. Mauger, A. Okada, H. G. Berns, T. Ishida, H. W. Sobel, K. Nitta, Kyoshi Nishijima, Shigetaka Moriyama, Shoei Nakayama, Yuichi Oyama, W. E. Keig, J. A. Goodman, Yoshitaka Itow, and Kazuoki Munakata
Subjects: Physics, Nuclear and High Energy Physics, Muon, Detector, Astrophysics (astro-ph), Flux, Astronomy, FOS: Physical sciences, Cosmic ray, Astrophysics, High Energy Physics - Phenomenology, Amplitude, High Energy Physics - Phenomenology (hep-ph), Primary (astronomy), High Energy Physics::Experiment, Super-Kamiokande, Anisotropy
Abstract: The relative sidereal variation in the arrival direction of primary cosmic ray nuclei of median energy 10 TeV was measured using downward, through-going muons detected with the Super-Kamiokande-I detector. The projection of the anisotropy map onto the right ascension axis has a first harmonic amplitude of $(6.64 \pm 0.98 {stat.} \pm 0.55 {syst.}) \times 10^{-4}$ and a phase at maximum at $(33.2^\circ \pm 8.2^\circ {stat.} \pm 5.1^\circ {syst.})$ right ascension. A sky map in equatorial coordinates indicates an excess region in the constellation of Taurus and a deficit region toward Virgo. The excess region is centered at $(\alpha_T, \delta_T) = (75^\circ \pm 7^\circ, -5^\circ \pm 9^\circ)$ with a half opening angle $\chi_T = (39 \pm 7)^\circ$; the excess flux is ($0.104 \pm 0.020$)% above the isotropic expectation. The corresponding parameters for the deficit region are $(\alpha_V, \delta_V) = (205^\circ \pm 7^\circ, 5^\circ \pm 10^\circ)$, $\chi_V = (54 \pm 7)^\circ$, and $(-0.094 \pm 0.014)$%. The data do not allow us to rule out a pure dipole form for the anisotropy (allowed at 13% confidence level); they are better described by the excess and deficit cones described above. We explored the implications under the assumption that the true anisotropy is not distorted too much by the analysis filter so that it is well-described by the observed excess and deficit cones., Comment: 18 pages, 11 figures, submitted for publication in Phys. Rev. D
Published: 2005

23. Measurement of atmospheric neutrino oscillation parameters by Super-Kamiokande I

Author: G. Guillian, C. Yanagisawa, M. Goldhaber, A. K. Ichikawa, K. Kaneyuki, A. Minamino, Y. Watanabe, S. Mine, D. W. Liu, Atsumu Suzuki, S. Matsuno, E. Kearns, T. Toshito, Hirokazu Ishino, M. Ishitsuka, Y. Totsuka, A. Suzuki, C. W. Walter, Ko Okumura, R. Svoboda, D. Turcan, Shantanu Desai, Y. Nakajima, K. Ishihara, J. P. Cravens, Y. Ashie, C. McGrew, S. Clark, R. J. Wilkes, Tsuyoshi Nakaya, Kunio Inoue, Y. Hayato, K. Taki, T. Sasaki, C. Saji, J. Yoo, A. L. Stachyra, K. Nishikawa, I. T. Lim, Masato Shiozawa, A. Kibayashi, K. S. Ganezer, J. Kameda, Shoji Yamamoto, T. Kato, N. Tamura, L. R. Sulak, C. W. Sterner, E. Blaufuss, J. Shirai, Y. Fukuda, Magdalena Malek, J. L. Stone, E. Sharkey, S. Dazeley, Yoshitaka Itow, Takashi Kobayashi, K. Hayashi, Y. Gando, Yusuke Koshio, Koji Nakamura, Y. Takeuchi, K. Washburn, Mark R. Vagins, John G. Learned, T. Iwashita, H. Okazawa, S. Ueda, T. Maruyama, S. Likhoded, Shinya Yamada, R. Nambu, W. Wang, S. Hatakeyama, Y. Kuno, R. Gran, Kazumasa Miyano, Henry W. Sobel, K. Nitta, Michael B. Smy, H. Seo, Takehisa Hasegawa, Kyoshi Nishijima, J. A. Goodman, Alec Habig, W. R. Kropp, G. W. Sullivan, John Hill, C. K. Jung, D. Kielczewska, Shigetaka Moriyama, J. S. Jang, D. Takemori, Yuichi Oyama, I. Kato, Shoei Nakayama, Katsuhiro Kobayashi, Minoru Yoshida, Y. Obayashi, T. Harada, S. Tasaka, W. E. Keig, T. Ishii, W. Gajewski, Kate Scholberg, S. B. Kim, David William Casper, Masayuki Nakahata, C. Mitsuda, J. Hosaka, Y. Takenaga, Masaya Hasegawa, M. Miura, K. K. Shiraishi, Yoshihiro Suzuki, Masatoshi Koshiba, J. Ishii, J. Zalipska, T. Ishida, Makoto Sakuda, A. Sarrat, Todd Haines, M. D. Messier, C. Mauger, A. Okada, H. G. Berns, T. Ishizuka, Taichi Morita, R. W. Ellsworth, Takaaki Kajita, Y. Choi, J. Y. Kim, Toshio Namba, and H. Maesaka
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, High Energy Physics::Phenomenology, Monte Carlo method, High Energy Physics - Experiment, Nuclear physics, Neutrino detector, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Super-Kamiokande, Charged current, Energy (signal processing)
Abstract: We present a combined analysis of fully-contained, partially-contained and upward-going muon atmospheric neutrino data from a 1489 day exposure of the Super--Kamiokande detector. The data samples span roughly five decades in neutrino energy, from 100 MeV to 10 TeV. A detailed Monte Carlo comparison is described and presented. The data is fit to the Monte Carlo expectation, and is found to be consistent with neutrino oscillations of $\nu_\mu \leftrightarrow \nu_\tau$ with $\sin^22\theta > 0.92$ and $1.5\times 10^{-3} < \Delta m^2 < 3.4\times 10^{-3}{\rm eV}^2$ at 90% confidence level., Comment: 32 pages, 44 figures. As accepted for publication in Physical Review D
Published: 2005
Full Text: View/download PDF

24. Search for Electron Neutrino Appearance in a 250 km Long-Baseline Experiment

Author: C. McGrew, R. Gran, T. Sasaki, Y. Hayato, L. R. Sulak, Makoto Sakuda, K. Nishikawa, Minoru Yoshida, M. H. Ahn, Masaya Hasegawa, M. Miura, Shoji Yamamoto, C. Mauger, M. Sekiguchi, C. W. Walter, J. H. Choi, A. Okada, H. W. Sobel, Tomoyuki Maruyama, Y. Suga, Shigeki Aoki, A. Kibayashi, S. Fukuda, Takaaki Kajita, T. Ishida, S. H. Lim, Yoshitaka Itow, Y. Ashie, Beom Jun Kim, K. Kaneyuki, Takashi Kobayashi, S. Mine, W. Wang, Y. Totsuka, N. Tamura, H. I. Jang, S. B. Boyd, A. Sarrat, David William Casper, Kazumasa Miyano, A. Minamino, F. Nakata, M. Ishitsuka, Y. Fukuda, J. L. Stone, Kate Scholberg, T. Inagaki, Y. Takeuchi, Shinya Yamada, S. Matsuno, H. Yokoyama, Atsumu Suzuki, Shogo Nishiyama, Shigetaka Moriyama, S. Ueda, K. Hayashi, H. C. Bhang, C. K. Jung, M. Y. Pac, D. Kielczewska, E. Kearns, K. K. Shiraishi, Shoei Nakayama, Masaaki Tanaka, Masayuki Nakahata, J. S. Jang, I. Kato, A. K. Ichikawa, Takehisa Hasegawa, J. Kameda, J. Hill, Michael B. Smy, N. Sasao, J. G. Learned, Y. Obayashi, S. B. Kim, C. Saji, W. R. Kropp, E. J. Jeon, T. Iwashita, J. Zalipska, Katsuhiro Kobayashi, Yoshihiro Suzuki, Yuichi Oyama, E. Sharkey, C. O. Kim, J. Y. Kim, Itsuo Nakano, Hwangseo Park, Susumu Noda, T. Ishii, C. Yanagisawa, Toshio Namba, Kenzo Nakamura, H. Maesaka, Taichi Morita, Yusuke Koshio, R. J. Wilkes, I. T. Lim, Mark R. Vagins, R. Nambu, T. Hara, K. K. Joo, Tsuyoshi Nakaya, J. Yoo, Masato Shiozawa, and A. Ikeda
Subjects: Physics, Particle physics, Muon, Meson, FOS: Physical sciences, General Physics and Astronomy, Weinberg angle, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, Neutrino, Neutrino oscillation, Electron neutrino, Lepton
Abstract: We present a search for electron neutrino appearance from accelerator produced muon neutrinos in the K2K long baseline neutrino experiment. One candidate event is found in the data corresponding to an exposure of 4.8*10^19 protons on target. The expected background in the absence of neutrino oscillations is estimated to be 2.4+-0.6 events and is dominated by mis-identification of events from neutral current pi^0 production. We exclude the \nu_\mu to \nu_e oscillations at 90% C.L. for the effective mixing angle in 2-flavor approximation of sin^2(2theta_\mu_e) (~= 1/2 sin^2 2 th_13) > 0.15 at Delta m^2_\mu_e = 2.8*10^{-3} eV^2, the best fit value of the \nu_\mu disappearance analysis in K2K. The most stringent limit of sin^2(2theta_\mu_e) < 0.09 is obtained at Delta m^2_\mu_e = 6*10^{-3} eV^2., Comment: 5 pages with 2 figures embeded in two column revtex4 style. Accepted to be published in Phys. Rev. Lett
Published: 2004
Full Text: View/download PDF

25. Limits on the Neutrino Magnetic Moment using 1496 Days of Super-Kamiokande-I Solar Neutrino Data

Author: G. Guillian, Atsumu Suzuki, K. Hayashi, C. McGrew, Y. Hayato, K. Nishikawa, T. J. Haines, E. Kearns, Toshio Namba, Y. Watanabe, John G. Learned, Y. Totsuka, S. B. Kim, J. L. Stone, T. Inagaki, Kenzo Nakamura, D. Takemori, Shoji Yamamoto, C. Saji, Yusuke Koshio, H. Maesaka, G. W. Sullivan, T. Toshito, M. Earl, M. Ishitsuka, C. K. Jung, D. Kielczewska, C. W. Walter, Katsuhiro Kobayashi, M. D. Messier, H. W. Sobel, T. Hashimoto, T. Ooyabu, Masayuki Nakahata, Takaaki Kajita, C. Mauger, Shantanu Desai, S. Ueda, Michael B. Smy, H. Seo, T. Maruyama, S. Fukuda, Yoshitaka Kuno, I. Kato, A. Okada, W. Wang, Y. Ashie, H. Okazawa, Kunio Inoue, Minoru Yoshida, M. Takita, J. Y. Kim, Mikio Morii, Takehisa Hasegawa, Yuichi Oyama, Y. Obayashi, K. S. Ganezer, K. Kaneyuki, R. Nishimura, Makoto Sakuda, Magdalena Malek, Y. Fukuda, A. K. Ichikawa, Hyosun Kim, T. Ishizuka, T. Shibata, J. Zalipska, K. Martens, S. Mine, A. Minamino, T. Sasaki, J. Kameda, Y. Takeuchi, Shinya Yamada, S. Matsuno, T. Ishida, Taichi Morita, R. W. Ellsworth, L. R. Sulak, M. Ackermann, T. Kobayashi, Y. Kajiyama, Masatoshi Koshiba, Yoshihiro Suzuki, D. W. Liu, B. Viren, Alec Habig, T. Kato, C. W. Sterner, A. Kibayashi, J. Ishii, J. A. Goodman, J. P. Cravens, E. Blaufuss, W. R. Kropp, W. Gajewski, Kate Scholberg, T. Iwashita, K. Nitta, Kyoshi Nishijima, D. Turcan, Hirokazu Ishino, Y. Nakajima, K. Ishihara, David William Casper, J. Shirai, Shigetaka Moriyama, Y. Nagashima, H. Takeuchi, Masaya Hasegawa, M. Miura, Nobuyuki Sakurai, Shoei Nakayama, K. K. Shiraishi, Shigeki Tasaka, E. Sharkey, S. Dazeley, K. Washburn, S. Hatakeyama, R. Gran, C. Mitsuda, Yoshitaka Itow, R. J. Wilkes, I. T. Lim, C. Yanagisawa, J. Yoo, Kazumasa Miyano, Masato Shiozawa, Y. Choi, T. Barszczak, J. Hill, Y. Gando, T. Ishii, R. Nambu, A. Suzuki, R. Svoboda, Tsuyoshi Nakaya, W. E. Keig, and Mark R. Vagins
Subjects: Physics, Particle physics, Magnetic moment, Physics::Instrumentation and Detectors, Solar neutrino, High Energy Physics::Phenomenology, General Physics and Astronomy, Electron, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Super-Kamiokande, Neutrino oscillation
Abstract: A search for a non-zero neutrino magnetic moment has been conducted using 1496 live days of solar neutrino data from {\SK}. Specifically, we searched for distortions to the energy spectrum of recoil electrons arising from magnetic scattering due to a non-zero neutrino magnetic moment. In the absence of clear signal, we found $\mu_{\nu} \leq 3.6 \times 10^{-10}$ $\mu_{B}$ at 90% C.L. by fitting to the Super-Kamiokande day/night spectra. The fitting took into account the effect of neutrino oscillation on the shapes of energy spectra. With additional information from other solar neutrino and KamLAND experiments constraining the oscillation region, a limit of $\mu_{\nu} \leq 1.1 \times 10^{-10}$ $\mu_{B}$ at 90% C.L. was obtained., Comment: 5 pages, 4 figures
Published: 2004
Full Text: View/download PDF

26. Evidence for an oscillatory signature in atmospheric neutrino oscillations

Author: Toshio Namba, J. Yoo, J. P. Cravens, Masato Shiozawa, Shantanu Desai, Atsumu Suzuki, W. Gajewski, Kate Scholberg, Y. Totsuka, H. Maesaka, T. Sasaki, E. Kearns, Mark R. Vagins, Y. Takeuchi, Shinya Yamada, E. Blaufuss, Y. Nagashima, Masaki Ishitsuka, A. L. Stachyra, J. Zalipska, C. McGrew, J. Shirai, A. Suzuki, Takaaki Kajita, R. Nishimura, Makoto Sakuda, Y. Hayato, K. Taki, R. Svoboda, G. Guillian, A. Kibayashi, E. Sharkey, S. Dazeley, Y. Watanabe, Hirokazu Ishino, L. R. Sulak, J. Kameda, Ko Okumura, C. Yanagisawa, S. Likhoded, Yoshitaka Itow, W. R. Kropp, Shoji Yamamoto, C. W. Walter, M. Goldhaber, C. Saji, Y. Kuno, M. Takita, Y. Ashie, C. W. Sterner, Tsuyoshi Nakaya, K. Nakamura, T. Toshito, K. Washburn, K. Hayashi, S. Mine, Kunio Inoue, S. Hatakeyama, R. Gran, Y. Gando, H. Okazawa, Tomoyuki Maruyama, T. Ooyabu, A. Minamino, T. Ishida, John G. Learned, H. W. Sobel, W. Wang, Masayuki Nakahata, T. Iwashita, K. Kaneyuki, Y. Fukuda, R. Nambu, A. Sarrat, D. W. Liu, T. Ishizuka, C. K. Jung, Alec Habig, S. Matsuno, S. Ueda, Minoru Yoshida, D. Takemori, D. Kielczewska, Magdalena Malek, Todd Haines, N. Tamura, Yasunari Suzuki, Y. Choi, M. D. Messier, K. Nishikawa, G. W. Sullivan, J. L. Stone, T. Inagaki, Kazumasa Miyano, Taichi Morita, R. W. Ellsworth, T. Kobayashi, C. Mauger, Takehisa Hasegawa, Masatoshi Koshiba, J. S. Jang, T. Ishii, A. Okada, I. Kato, H. G. Berns, Yusuke Koshio, John Hill, Michael B. Smy, Katsuhiro Kobayashi, J. Ishii, Y. Takenaga, H. Seo, Masaya Hasegawa, M. Miura, David William Casper, T. Harada, C. Mitsuda, R. J. Wilkes, Y. Obayashi, J. Hosaka, K. Nitta, S. Tasaka, W. E. Keig, S. B. Kim, Kyoshi Nishijima, J. Y. Kim, D. Turcan, I. T. Lim, Y. Nakajima, K. K. Shiraishi, K. Ishihara, T. Kato, Shigetaka Moriyama, Yuichi Oyama, J. A. Goodman, Shoei Nakayama, A. K. Ichikawa, and K. S. Ganezer
Subjects: Physics, Particle physics, Tamura, Norio, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, General Physics and Astronomy, High Energy Physics - Experiment, Distribution (mathematics), Measurements of neutrino speed, 田村, 詔生, High Energy Physics::Experiment, Muon neutrino, Atmospheric neutrino, Neutrino, Signature (topology), Neutrino oscillation, Energy (signal processing)
Abstract: Muon neutrino disappearance probability as a function of neutrino flight length L over neutrino energy E was studied. A dip in the L/E distribution was observed in the data, as predicted from the sinusoidal flavor transition probability of neutrino oscillation. The observed L/E distribution constrained nu_mu nu_tau neutrino oscillation parameters; 1.9x10^-3 < Delta m^2 < 3.0x10^-3 eV^2 and \sin^2(2theta) > 0.90 at 90% confidence level., Comment: 5 pages, 5 figures, submitted to PRL
Published: 2004

27. Search for Dark Matter WIMPs using Upward Through-going Muons in Super-Kamiokande

Author: K. Kaneyuki, G. Guillian, H. W. Sobel, Atsumu Suzuki, S. Mine, M. Goldhaber, J. Y. Kim, Mikio Morii, Takaaki Kajita, Magdalena Malek, E. Kearns, Y. Nagashima, H. Takeuchi, Hyosun Kim, M. Ishitsuka, Shoei Nakayama, Lawrence Sulak, C. Saji, David William Casper, Shantanu Desai, Nobuyuki Sakurai, Yoshihiro Suzuki, Todd Haines, Masatoshi Koshiba, C. McGrew, Y. Totsuka, E. Blaufuss, Y. Ashie, Y. Hayato, S. Ueda, Y. Takeuchi, Shinya Yamada, R. Nishimura, Makoto Sakuda, Minoru Yoshida, M. D. Messier, J. L. Stone, A. Kibayashi, T. Kobayashi, Kunio Inoue, Michael B. Smy, K. K. Shiraishi, W. R. Kropp, W. Wang, Y. Kajiyama, T. Inagaki, Toshio Namba, M. Earl, K. Nitta, Kenzo Nakamura, Yoshitaka Itow, Kyoshi Nishijima, C. W. Sterner, T. Ishii, C. Yanagisawa, C. Mauger, H. Seo, H. Maesaka, A. Minamino, Yusuke Koshio, Shigetaka Moriyama, T. Iwashita, Mark R. Vagins, Masaya Hasegawa, M. Miura, A. Okada, K. Hayashi, Kazumasa Miyano, John Hill, C. W. Walter, T. Hashimoto, J. G. Learned, T. Ishizuka, K. Washburn, T. Shibata, A. K. Ichikawa, D. Takemori, T. Ooyabu, G. W. Sullivan, C. Mitsuda, S. Hatakeyama, Masayuki Nakahata, R. Gran, C. K. Jung, D. Turcan, D. Kielczewska, Taichi Morita, R. W. Ellsworth, Katsuhiro Kobayashi, D. W. Liu, J. Kameda, M. Takita, R. J. Wilkes, I. Kato, Y. Nakajima, Hirokazu Ishino, I. T. Lim, A. Sarrat, Y. Fukuda, K. Ishihara, Y. Obayashi, S. Tasaka, W. E. Keig, J. A. Goodman, T. Harada, T. Kato, K. Nishikawa, Yuichi Oyama, Tomoyuki Maruyama, S. B. Kim, J. Zalipska, K. S. Ganezer, J. P. Cravens, T. Ishida, Takehisa Hasegawa, T. Sasaki, Y. Choi, W. Gajewski, Kate Scholberg, Y. Watanabe, T. Toshito, Shoji Yamamoto, J. Shirai, E. Sharkey, S. Dazeley, S. Fukuda, H. Okazawa, Alec Habig, S. Matsuno, Y. Gando, R. Nambu, J. Yoo, Masato Shiozawa, T. Barszczak, A. Suzuki, R. Svoboda, and Tsuyoshi Nakaya
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, Dark matter, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), WIMP, Neutrino detector, Weakly interacting massive particles, High Energy Physics::Experiment, Neutrino, Super-Kamiokande, Light dark matter
Abstract: We present the results of indirect searches for Weakly Interacting Massive Particles (WIMPs) with 1679.6 live days of data from the Super-Kamiokande detector using neutrino-induced upward through-going muons. The search is performed by looking for an excess of high energy muon neutrinos from WIMP annihilations in the Sun, the core of the Earth, and the Galactic Center, as compared to the number expected from the atmospheric neutrino background. No statistically significant excess was seen. We calculate flux limits in various angular cones around each of the above celestial objects. We obtain conservative model-independent upper limits on WIMP-nucleon cross-section as a function of WIMP mass and compare these results with the corresponding results from direct dark matter detection experiments., 10 pages, 14 figures, Submitted to Phys. Rev. D
Published: 2004

28. Evidence for Muon Neutrino Oscillation in an Accelerator-Based Experiment

Author: J. Y. Kim, Toshio Namba, H. Maesaka, K. Asakura, P. Kitching, Katsuki Hiraide, S. Ueda, Y. Totsuka, K. McConnel, Jordi Burguet-Castell, H. I. Jang, K. Nakamura, K. Nishikawa, H. Yokoyama, F. Pierre, E. Aliu, Makoto Sakuda, W. Wang, S. M. Oser, W. R. Kropp, Masayuki Nakahata, Mark R. Vagins, S. Yamada, U. Dore, T. Iwashita, S. Mine, A. Cervera, K. Kaneyuki, Ko Okumura, Shigeki Aoki, Michael B. Smy, E. Kearns, Tadayuki Takahashi, L. Ludovici, C. Cavata, S. Matsuno, M. Fechner, Takaaki Kajita, Masataka Iinuma, J. Yoo, A. Rodriguez, D. Kerr, Itsuo Nakano, S. Likhoded, M. Ishitsuka, Masato Shiozawa, K. Hayashi, Yoshihiro Suzuki, Federico Sanchez, Yoshitaka Itow, J. Argyriades, C. K. Jung, Y. Takubo, C. Saji, Y. Takeuchi, D. Kielczewska, Taichi Morita, I. Kato, N. Yershov, R. Schroeter, A. Minamino, N. Tamura, C. McGrew, H. C. Bhang, Silvia Borghi, John G. Learned, A. Konaka, A. Tornero-Lopez, S P Mikheyev, J. Bouchez, M. Y. Pac, Y. Obayashi, Y. Hayato, Lawrence Sulak, T. Kutter, T. Hara, A. Suzuki, Masashi Yokoyama, Masaaki Tanaka, J. L. Stone, C. W. Walter, R. Gran, T. Inagaki, K. K. Joo, Shoji Yamamoto, S. Andringa, A. N. Khotjantsev, Tsuyoshi Nakaya, J. Kubota, Yusuke Koshio, J. H. Choi, A. Blondel, A. Ikeda, Y. Fukuda, M. M. Khabibullin, David William Casper, E. J. Jeon, Stephane T'Jampens, C. Mitsuda, T. Ishida, J. Hosaka, Minoru Yoshida, T. Ishii, E. Fernandez, K. O. Cho, A. K. Ichikawa, E. Sharkey, M. Sekiguchi, Katsuhiro Kobayashi, S. Nawang, O. V. Mineev, F. Nova, G. Jover, G. Sitjes, Yuichi Oyama, K. K. Shiraishi, R. L. Helmer, P. Novella, C. Yanagisawa, J.J. Gómez-Cadenas, P. F. Loverre, C. O. Kim, Y. Takenaga, R. Nambu, Masaya Hasegawa, M. Miura, C. Mariani, Yu. Kudenko, T. Sasaki, V. A. Matveev, K. Taki, R. Ashie, J. Kameda, X. Espinal, Y. Moriguchi, J. Zalipska, R. J. Wilkes, I. T. Lim, R. Terri, Yoshitaka Kuno, Tomoyuki Maruyama, J. Mallet, Kate Scholberg, T. Nakadaira, Takehisa Hasegawa, K. Ishihara, I. S. Jeong, T. Kobayashi, A. Sarrat, C. Mauger, A. Okada, H. G. Berns, Shoei Nakayama, J. Hill, S. B. Kim, K. Nitta, Shigetaka Moriyama, H. W. Sobel, Blondel, Alain, Borghi, Silvia, Cervera Villanueva, Anselmo, and Schroeter, Raphaël
Subjects: Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, FOS: Physical sciences, ddc:500.2, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Muon neutrino, 010306 general physics, Neutrino oscillation, Physics, Tamura, Norio, 010308 nuclear & particles physics, Oscillation, Detector, High Energy Physics::Phenomenology, Sigma, Física, Solar neutrino problem, K2K experiment, Physics::Accelerator Physics, 田村, 詔生, High Energy Physics::Experiment, Beam (structure)
Abstract: We present results for muon neutrino oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced muon neutrino beam with a mean energy of 1.3 GeV directed at the Super-Kamiokande detector. We observed the energy dependent disappearance of muon neutrino, which we presume have oscillated to tau neutrino. The probability that we would observe these results if there is no neutrino oscillation is 0.0050% (4.0 sigma)., Comment: 5 pages, 4 figures
Published: 2004
Full Text: View/download PDF

29. The Solar Neutrino Day/Night Effect in Super-Kamiokande

Author: Michael B. Smy
Subjects: Physics, Elastic scattering, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, Solar neutrino, High Energy Physics::Phenomenology, FOS: Physical sciences, Electron, Expected value, Asymmetry, Atomic and Molecular Physics, and Optics, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, Super-Kamiokande, Mixing (physics), media_common
Abstract: The time variation of the elastic scattering rate of solar neutrinos with electrons in Super-Kamiokande-I was fit to the day/night variations expected from active two-neutrino oscillations in the Large Mixing Angle region. Combining Super-Kamiokande measurements with other solar and reactor neutrino data, the mixing angle is determined as sin^2theta=0.276+0.033-0.026 and the mass squared difference between the two neutrino mass eigenstates as Delta m^2=7.1+0.6-0.5x10^-5eV^2. For the best fit parameters, a day/night asymmetry of -1.7+-1.6(stat)+1.3-1.2(syst)% was determined from the Super-Kamiokande data, which has improved statistical precision over previous measurements and is in excellent agreement with the expected value of -1.6%., Comment: 3 pages, 4 figures; to appear in the proceedings of the TAUP 2003 conference
Published: 2003
Full Text: View/download PDF

30. Neutrino Experiments with Super-Kamiokande

Author: Michael B. Smy
Subjects: Physics, Particle physics, Physics::Instrumentation and Detectors, Oscillation, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Flux, Solar neutrino problem, Nuclear physics, Neutrino detector, Energy spectrum, Measurements of neutrino speed, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, Super-Kamiokande, Neutrino oscillation
Abstract: Super‐Kamiokande’s measurements of the solar and atmospheric neutrino flux yielded first evidence for oscillation of atmospheric vμ’s into vτ’s and (together with data from the SNO experiment) first evidence for oscillation of solar ve’s into vμ’s or vτ’s. Data from Super‐Kamiokande also constrained the neutrino mixing in both cases to be large. In Super‐Kamiokande, the flux and energy spectrum of the first long baseline accelerator vμ’s were measured, they favor neutrino oscillations consistent with the atmospheric neutrino analysis.
Published: 2003
Full Text: View/download PDF

31. Neutrino-induced upward stopping muons in Super-Kamiokande

Author: Y. Hatakeyama, Y. Takeuchi, Shinya Yamada, Yasunari Suzuki, Y. Totsuka, Kazumasa Miyano, M. Earl, Michael B. Smy, Kyoshi Nishijima, L. R. Sulak, H. W. Sobel, W. Doki, C. Mauger, J. Hill, W. E. Keig, T. Kobayashi, J. L. Stone, T. Inagaki, Masatoshi Koshiba, M. Takahashi, D. Takemori, E. Kearns, K. Nishikawa, M. Kohama, A. Okada, S. Hatakeyama, Yoshitaka Itow, M. Goldhaber, M. Kirisawa, Yohei Kobayashi, M. Koike, K. Higuchi, C. W. Walter, D. Casper, Makoto Sakuda, O. Sasaki, Minoru Yoshida, S. Nakayama, K. Nakamura, K. Kaneyuki, C. McGrew, Takaaki Kajita, C. Saji, K. Ishihara, S. Inaba, N. Sakurai, Ken-ichiro Kobayashi, J. A. Goodman, Alec Habig, E. Blaufuss, M. Miura, H. Fujiyasu, Y. Nagashima, K. Martens, S. Matsuno, M. Koga, Masayuki Nakahata, H. Takeuchi, Akira Hasegawa, A. Sakai, R. W. Ellsworth, A. L. Stachyra, Soo-Bong Kim, L. R. Price, J. Shirai, B. K. Kim, W. Gajewski, Kate Scholberg, T. Ishii, M. D. Messier, S. Echigo, A. Kibayashi, J. Kameda, Shigeki Tasaka, E. Sharkey, S. Kasuga, Y. Fukuda, V. J. Stenger, K. S. Ganezer, M. Takita, M. L. Chen, R. J. Wilkes, Ko Okumura, Hiroshi Ogawa, Takehisa Hasegawa, Yuichi Oyama, Takashi Yamaguchi, Hirokazu Ishino, K. K. Young, Kunio Inoue, Tomoyuki Maruyama, John G. Learned, M. Nemoto, T. Futagami, J. S. George, F. Tsushima, C. Yanagisawa, A. T. Suzuki, G. W. Sullivan, H. Okazawa, Y. Kanaya, M. Etoh, Y. Watanabe, R. Sanford, S. Mine, C. K. Jung, M. Takahata, A. Suzuki, D. Kielczewska, R. Svoboda, Y. Obayashi, Y. Hayato, T. J. Haines, W. R. Kropp, T. Iwamoto, Masato Shiozawa, Yusuke Koshio, T. Barszczak, Mark R. Vagins, and B. Viren
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Flux, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, Expected value, High Energy Physics - Experiment, Nuclear physics, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Super-Kamiokande, Zenith
Abstract: A total of 137 upward stopping muons of minimum energy 1.6 GeV are observed by Super-Kamiokande during 516 detector live days. The measured muon flux is 0.39+/-0.04(stat.)+/-0.02(syst.)x10^{-13}cm^{-2}s^{-1}sr^{-1} compared to an expected flux of 0.73+/-0.16(theo.)x10^{-13}cm^{-2}s^{-1}sr^{-1}. Using our previously-published measurement of the upward through-going muon flux, we calculate the stopping/through-going flux ratio R}, which has less theoretical uncertainty. The measured value of R=0.22+/-0.02(stat.)+/-0.01(syst.) is significantly smaller than the value 0.37^{+0.05}_{-0.04}(theo.) expected using the best theoretical information (the probability that the measured R is a statistical fluctuation below the expected value is 0.39%). A simultaneous fitting to zenith angle distributions of upward stopping and through-going muons gives a result which is consistent with the hypothesis of neutrino oscillations with the parameters sin^2 2\theta >0.7 and 1.5x10^{-3} < \Delta m^2 < 1.5x10^{-2} eV^2 at 90% confidence level, providing a confirmation of the observation of neutrino oscillations by Super-Kamiokande using the contained atmospheric neutrino events., Comment: 15 pages, including 7 figures. Submitted to Physics Letters Revision fixes typo in author field
Published: 1999

32. Observation of the east-west anisotropy of the atmospheric neutrino flux

Author: Masatoshi Koshiba, A. Kibayashi, Y. Totsuka, R. W. Ellsworth, G. W. Sullivan, M. Nemoto, C. W. Walter, Y. Hatakeyama, Akira Hasegawa, John G. Learned, T. Futagami, D. Takemori, T. Hayakawa, Yoshitaka Itow, Shoei Nakayama, M. Earl, R. J. Wilkes, L. Wai, Takaaki Kajita, H. Ishino, M. Kirisawa, K. K. Young, C. K. Jung, M. Takahata, D. Kielczewska, M. Goldhaber, Tomoyuki Maruyama, Katsuhiro Kobayashi, Soo-Bong Kim, M. Koike, D. Casper, S. Kasuga, Y. Fukuda, J. Hill, L. R. Price, J. Shirai, Makoto Sakuda, K. Higuchi, Minoru Yoshida, Y. Hayato, Michael B. Smy, M. Takita, Shigeki Tasaka, E. Sharkey, Y. Takeuchi, Kazumasa Miyano, K. Martens, C. McGrew, Shinya Yamada, T. Ishii, M. D. Messier, S. Echigo, C. Yanagisawa, Todd Haines, J. Kameda, M. Miura, T. Iwamoto, Hiroshi Ogawa, C. Mauger, V. J. Stenger, T. Kobayashi, M. L. Chen, W. Doki, Takashi Yamaguchi, Atsumu Suzuki, A. Okada, Kyoshi Nishijima, Takehisa Hasegawa, A. L. Stachyra, Junichi Kanzaki, A. Sakai, Nobuyuki Sakurai, K. Nakamura, Yusuke Koshio, W. E. Keig, Y. Nagashima, H. Takeuchi, Y. Obayashi, S. Matsuno, Yasunari Suzuki, Mark R. Vagins, W. Gajewski, Kate Scholberg, Masayuki Nakahata, B. K. Kim, K. Ishihara, E. Kearns, M. Takahashi, W. R. Kropp, Masato Shiozawa, J. L. Stone, L. R. Sulak, T. Barszczak, M. Etoh, Alec Habig, K. S. Ganezer, M. Koga, S. Hatakeyama, K. Kaneyuki, C. Saji, A. Suzuki, R. Svoboda, Y. Kobayashi, S. Inaba, S. Mine, J. S. George, B. Viren, M. Kohama, K. Nishikawa, Yuichi Oyama, E. Blaufuss, F. Tsushima, Ko Okumura, Kunio Inoue, Y. Kanaya, H. Okazawa, Y. Watanabe, R. Sanford, H. W. Sobel, Osamu Sasaki, H. Fujiyasu, and J. A. Goodman
Subjects: Physics, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Cosmic ray, Astrophysics, Magnetic field, High Energy Physics - Experiment, Atmosphere of Earth, Earth's magnetic field, Neutrino detector, High Energy Physics::Experiment, Neutrino, Anisotropy, Charged current, Physics::Atmospheric and Oceanic Physics
Abstract: The east-west anisotropy, caused by the deflection of primary cosmic rays in the Earth's magnetic field, is observed for the first time in the flux of atmospheric neutrinos. Using a 45 kt-year exposure of the Super-Kamiokande detector, 552 e-like and 633 mu-like horizontally-going events are selected in the momentum range between 400 and 3000 MeV/c. The azimuthal distribution of e-like and mu-like events agrees with the expectation from atmospheric neutrino flux calculations that account for the geomagnetic field, verifying that the geomagnetic field effects in the production of atmospheric neutrinos in the GeV energy range are well understood., Comment: 8 pages,3 figures revtex, submitted to PRL
Published: 1999

33. Low energy neutrino physics at Super-Kamiokande

Author: Michael B Smy
Subjects: Physics, History, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Astrophysics, Solar neutrino problem, Computer Science Applications, Education, Neutrino detector, Astrophysics::Solar and Stellar Astrophysics, Measurements of neutrino speed, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, Neutrino astronomy, Neutrino oscillation, Super-Kamiokande
Abstract: In spite of intensive studies of solar 8B neutrinos – which resulted in the first evidence that the flavour of solar neutrinos oscillates – the characteristic, expected transition between vacuum oscillations below and matter-dominated oscillations above 3 MeV remains thus far elusive. Also, the only direct demonstration of matter effects on solar neutrino oscillations, the day/night asymmetry, has not been observed yet. After a review of past measurements, Super-Kamiokande's future solar and supernova neutrino physics sensitivity is discussed, in particular in light of the possibility of Gadolinium doping.
Published: 2010
Full Text: View/download PDF

34. Measurement of the quasielastic axial vector mass in neutrino interactions on oxygen

Author: K. Ishihara, A. Blondel, M. M. Khabibullin, A. Ikeda, Stephane T'Jampens, Y. Totsuka, A. Cervera, H. I. Jang, U. Dore, Atsumu Suzuki, Masataka Iinuma, I. S. Jeong, T. Kobayashi, Y. Takubo, Y. Takeuchi, H. C. Bhang, Tadayuki Takahashi, S. M. Oser, K. Nishikawa, H. W. Sobel, Itsuo Nakano, E. Fernandez, J. Bouchez, Takaaki Kajita, J. Yoo, Masato Shiozawa, M. Y. Pac, L. Whitehead, E. Kearns, Shinya Yamada, Taichi Morita, Y. Kurimoto, M. Sekiguchi, K. Taki, Federico Sanchez, R. Gran, T. Nakadaira, J. Catala, A. K. Ichikawa, A. Rodriguez, D. Kerr, R. Schroeter, T. Hara, S. Likhoded, C. Saji, Katsuki Hiraide, Y. Kuno, T. Ishida, Makoto Sakuda, N. Tamura, Silvia Borghi, K. K. Joo, David William Casper, F. Nova, J. L. Stone, C. Mitsuda, J. Kameda, J. Hosaka, Ko Okumura, T. Inagaki, Jordi Burguet-Castell, T. Kutter, K. B. McConnel Mahn, Shigeki Aoki, J. Mallet, Toshio Namba, J. Zalipska, N. Yershov, Koji Nakamura, K. Nitta, Shaomin Chen, K. Kaneyuki, A. N. Khotjantsev, E. J. Jeon, S. Matsuno, Masashi Yokoyama, Masaaki Tanaka, A. Okada, K. K. Shiraishi, L. Ludovici, W. Wang, H. G. Berns, C. Cavata, T. Ishii, S. Ueda, K. Hayashi, Michael B. Smy, H. Maesaka, Shigetaka Moriyama, Masayuki Nakahata, Minoru Yoshida, M. Sorel, A. Minamino, R. L. Helmer, S. Nawang, O. V. Mineev, C. W. Walter, Yasunari Suzuki, Hiroshi Sato, K. Asakura, A. Tornero-Lopez, P. Kitching, G. Sitjes, J. Argyriades, Shoei Nakayama, C. Yanagisawa, A. Sarrat, E. Aliu, S. Andringa, P. Novella, J. G. Learned, J.J. Gómez-Cadenas, Y. Takenaga, Masaya Hasegawa, M. Miura, Yoshitaka Itow, Tsuyoshi Nakaya, F. Berghaus, A. Konaka, J. Kubota, H. Yokoyama, F. Pierre, C. McGrew, Y. Hayato, Y. Fukuda, Katsuhiro Kobayashi, Shoji Yamamoto, C. O. Kim, K. O. Cho, S P Mikheyev, R. Terri, Yusuke Koshio, R. Ashie, S. Mine, Mark R. Vagins, Masaki Ishitsuka, R. Nambu, X. Espinal, Y. Moriguchi, R. J. Wilkes, Yu. Kudenko, I. T. Lim, M. Fechner, S. B. Kim, J. Y. Kim, G. Jover, Yuichi Oyama, C. Mariani, Takanori Sasaki, Kate Scholberg, Takehisa Hasegawa, C. K. Jung, D. Kielczewska, I. Kato, P. F. Loverre, Y. Obayashi, L. R. Sulak, W. R. Kropp, V. A. Matveev, T. Iwashita, and J. H. Choi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Tamura, Norio, 010308 nuclear & particles physics, Momentum transfer, Nuclear Theory, Form factor (quantum field theory), Electron, 7. Clean energy, 01 natural sciences, Nuclear physics, Momentum, 0103 physical sciences, Invariant mass, 田村, 詔生, Neutrino, 010306 general physics, Nucleon, Nuclear Experiment, Pseudovector
Abstract: The weak nucleon axial-vector form factor for quasielastic interactions is determined using neutrino interaction data from the K2K Scintillating Fiber detector in the neutrino beam at KEK. More than 12 000 events are analyzed, of which half are charged-current quasielastic interactions ${\ensuremath{\nu}}_{\ensuremath{\mu}}n\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ensuremath{-}}p$ occurring primarily in oxygen nuclei. We use a relativistic Fermi gas model for oxygen and assume the form factor is approximately a dipole with one parameter, the axial-vector mass ${M}_{A}$, and fit to the shape of the distribution of the square of the momentum transfer from the nucleon to the nucleus. Our best fit result for ${M}_{A}=1.20\ifmmode\pm\else\textpm\fi{}0.12\text{ }\text{ }\mathrm{GeV}$. Furthermore, this analysis includes updated vector form factors from recent electron scattering experiments and a discussion of the effects of the nucleon momentum on the shape of the fitted distributions.
Published: 2006

35. Search for Nucleon Decay via Modes Favored by Supersymmetric Grand Unification Models in Super-Kamiokande-I

Author: Masatoshi Koshiba, Shoei Nakayama, Yuichi Oyama, A. Kibayashi, J. Ishii, K. Kaneyuki, J. Hill, Y. Gando, S. Matsuno, Yasunari Suzuki, Makoto Sakuda, Y. Takeuchi, Shinya Yamada, Toshio Namba, Y. Totsuka, Yusuke Koshio, R. Nambu, Mark R. Vagins, T. Ishizuka, H. Maesaka, M. Goldhaber, Taichi Morita, R. W. Ellsworth, A. Suzuki, M. Earl, Masashi Yokoyama, J. A. Goodman, R. Svoboda, Magdalena Malek, J. Zalipska, T. Harada, Tsuyoshi Nakaya, T. Ishida, C. McGrew, M. Ishitsuka, C. W. Walter, Y. Hayato, S. B. Kim, J. Y. Kim, J. Yoo, Shantanu Desai, Masato Shiozawa, Y. Choi, N. Tamura, T. Sasaki, J. L. Stone, L. R. Sulak, Henry W. Sobel, K. Nitta, Shoji Yamamoto, Koji Nakamura, A. Minamino, Kyoshi Nishijima, Michael B. Smy, T. Ooyabu, Masayuki Nakahata, Takaaki Kajita, H. Seo, Shigetaka Moriyama, Y. Fukuda, A. L. Stachyra, T. J. Haines, A. Sarrat, David William Casper, C. Mitsuda, J. Hosaka, A. K. Ichikawa, M. D. Messier, K. K. Shiraishi, D. W. Liu, C. Mauger, D. Takemori, K. Taki, A. Okada, H. G. Berns, J. Kameda, C. W. Sterner, D. Turcan, Y. Nakajima, K. Ishihara, T. Kobayashi, K. Hayashi, S. Ueda, T. Maruyama, Ko Okumura, John G. Learned, Y. Ashie, G. W. Sullivan, Katsuhiro Kobayashi, Kunio Inoue, J. S. Jang, K. Nishikawa, Y. Watanabe, S. Mine, T. Toshito, J. P. Cravens, W. R. Kropp, G. Guillian, T. Iwashita, S. Likhoded, Yoshitaka Itow, Y. Kuno, T. Kato, C. K. Jung, Minoru Yoshida, D. Kielczewska, Kazumasa Miyano, K. S. Ganezer, I. Kato, Y. Obayashi, W. E. Keig, Y. Takenaga, Masaya Hasegawa, M. Miura, K. Washburn, S. Hatakeyama, R. Gran, E. Blaufuss, C. Yanagisawa, Atsumu Suzuki, E. Kearns, T. Nakadaira, Takehisa Hasegawa, C. Saji, Hirokazu Ishino, W. Wang, H. Okazawa, Alec Habig, J. Shirai, Shigeki Tasaka, E. Sharkey, S. Dazeley, W. Gajewski, Kate Scholberg, T. Ishii, R. J. Wilkes, and I. T. Lim
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics::Phenomenology, Supersymmetry, High Energy Physics - Experiment, Particle decay, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Mass spectrum, Grand Unified Theory, High Energy Physics::Experiment, Neutron, Neutrino, Nucleon, Super-Kamiokande
Abstract: We report the results for nucleon decay searches via modes favored by supersymmetric grand unified models in Super-Kamiokande. Using 1489 days of full Super-Kamiokande-I data, we searched for $p \to \bar{\nu} K^+$, $n \to \bar{\nu} K^0$, $p \to \mu^+ K^0$ and $p \to e^+ K^0$ modes. We found no evidence for nucleon decay in any of these modes. We set lower limits of partial nucleon lifetime 2.3$\times10^{33}$, 1.3$\times10^{32}$, 1.3$\times10^{33}$ and 1.0$\times10^{33}$ years at 90% confidence level for $p \to \bar{\nu} K^+$, $n \to \bar{\nu} K^0$, $p \to \mu^+ K^0$ and $p \to e^+ K^0$ modes, respectively. These results give a strong constraint on supersymmetric grand unification models., Comment: 14 pages, 13 figures
Published: 2005

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources

Refine your results

35 results on '"Michael B. Smy"'

1. Search for tens of MeV neutrinos associated with gamma-ray bursts in Super-Kamiokande

2. Search for coherent charged pion production in neutrino-carbon interactions

3. Terrestrial Matter Effects from Solar Neutrino Interactions in Super-Kamiokande

4. MATTER EFFECTS ON NEUTRINO OSCILLATIONS

5. Super-Kamiokandeʼs Solar ν Results

6. Measurement of neutrino oscillation by the K2K experiment

7. THE SOLAR NEUTRINO PROBLEM AND ITS OSCILLATION SOLUTION

8. Measurement of the Flux and Zenith-Angle Distribution of Upward Throughgoing Muons by Super-Kamiokande

9. Constraints on Neutrino Oscillation Parameters from the Measurement of Day-Night Solar Neutrino Fluxes at Super-Kamiokande

10. Measurement of the Solar Neutrino Energy Spectrum Using Neutrino-Electron Scattering

11. Calibration of Super-Kamiokande using an electron LINAC

12. Evidence for Oscillation of Atmospheric Neutrinos

13. Measurement of inclusive pi(0) production in the charged-current interactions of neutrinos in a 1.3-GeV wide band beam

14. CONSTRAINTS ON NEUTRINO OSCILLATION PARAMETERS FROM TIME/ENERGY DEPENDENCE OF SOLAR 8<font>B</font> NEUTRINO FLUX

15. Atmospheric neutrino oscillation analysis with sub-leading effects in Super-Kamiokande I, II, and III

16. Report on the Depth Requirements for a Massive Detector at Homestake

17. Solar neutrino measurements in Super-Kamiokande-II

18. Experimental study of the atmospheric neutrino backgrounds forp→e+π0searches in water Cherenkov detectors

19. First Study of Neutron Tagging with a Water Cherenkov Detector

20. A Measurement of Atmospheric Neutrino Flux Consistent with Tau Neutrino Appearance

21. Three flavor neutrino oscillation analysis of atmospheric neutrinos in Super-Kamiokande

22. Observation of the Anisotropy of 10 TeV Primary Cosmic Ray Nuclei Flux with the Super-Kamiokande-I Detector

23. Measurement of atmospheric neutrino oscillation parameters by Super-Kamiokande I

24. Search for Electron Neutrino Appearance in a 250 km Long-Baseline Experiment

25. Limits on the Neutrino Magnetic Moment using 1496 Days of Super-Kamiokande-I Solar Neutrino Data

26. Evidence for an oscillatory signature in atmospheric neutrino oscillations

27. Search for Dark Matter WIMPs using Upward Through-going Muons in Super-Kamiokande

28. Evidence for Muon Neutrino Oscillation in an Accelerator-Based Experiment

29. The Solar Neutrino Day/Night Effect in Super-Kamiokande

30. Neutrino Experiments with Super-Kamiokande

31. Neutrino-induced upward stopping muons in Super-Kamiokande

32. Observation of the east-west anisotropy of the atmospheric neutrino flux

33. Low energy neutrino physics at Super-Kamiokande

34. Measurement of the quasielastic axial vector mass in neutrino interactions on oxygen

35. Search for Nucleon Decay via Modes Favored by Supersymmetric Grand Unification Models in Super-Kamiokande-I

Catalog

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Journal

Database

Publisher

35 results on '"Michael B. Smy"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources