Browsing by Author "Hill, J."

Now showing 1 - 4 of 4
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    Evidence for muon neutrino oscillation in an accelerator-based experiment
    Aliu, E.; Andringa, S.; Aoki, S.; Argyriades, J.; Asakura, K.; Ashie, R.; Berns, H.; Bhang, H.; Blondel, A.; Borghi, S.; Bouchez, J.; Burguet-Castell, J.; Casper, D.; Cavata, C.; Cervera, A.; Cho, K. O.; Choi, J. H.; Dore, U.; Espinal, X.; Fechner, M.; Fernandez, E.; Fukuda, Y.; Gomez-Cadenas, J. J.; Gran, R.; Hara, T.; Hasegawa, M.; Hasegawa, T.; Hayashi, K.; Hayato, Y.; Helmer, R. L.; Hill, J.; Hiraide, K.; Hosaka, J.; Ichikawa, A. K.; Iinuma, M.; Ikeda, A.; Inagaki, T.; Ishida, T.; Ishihara, K.; Ishii, T.; Ishitsuka, M.; Itow, Y.; Iwashita, T.; Jang, H. I.; Jeon, E. J.; Jeong, I. S.; Joo, K. K.; Jover, G.; Jung, C. K.; Kajita, T.; Kameda, J.; Kaneyuki, K.; Kato, I.; Kearns, E.; Kerr, D.; Kim, C. O.; Khabibullin, M.; Khotjantsev, A.; Kielczewska, D.; Kim, J. Y.; Kim, S.; Kitching, P.; Kobayashi, K.; Kobayashi, T.; Konaka, A.; Koshio, Y.; Kropp, W.; Kubota, J.; Kudenko, Y.; Kuno, Y.; Kutter, T.; Learned, J.; Likhoded, S.; Lim, I. T.; Loverre, P. F.; Ludovici, L.; Maesaka, H.; Mallet, J.; Mariani, Camillo; Maruyama, T.; Matsuno, S.; Matveev, V. A.; Mauger, C.; McConnel, K.; McGrew, C.; Mikheyev, S.; Minamino, A.; Mine, S.; Mineev, O.; Mitsuda, C.; Miura, M.; Moriguchi, Y.; Morita, T.; Moriyama, S.; Nakadaira, T.; Nakahata, M.; Nakamura, K.; Nakano, I.; Nakaya, T.; Nakayama, S.; Namba, T.; Nambu, R.; Nawang, S.; Nishikawa, K.; Nitta, K.; Nova, F.; Novella, P.; Obayashi, Y.; Okada, A.; Okumura, K.; Oser, S. M.; Oyama, Y.; Pac, M. Y.; Pierre, F.; Rodriguez, A.; Saji, C.; Sakuda, M.; Sanchez, F.; Sarrat, A.; Sasaki, T.; Scholberg, K.; Schroeter, R.; Sekiguchi, M.; Sharkey, E.; Shiozawa, M.; Shiraishi, K. K.; Sitjes, G.; Smy, M.; Sobel, H.; Stone, J.; Sulak, L.; Suzuki, A.; Suzuki, Y.; Takahashi, T.; Takenaga, Y.; Takeuchi, Y.; Taki, K.; Takubo, Y.; Tamura, N.; Tanaka, M.; Terri, R.; T'Jampens, S.; Tornero-Lopez, A.; Totsuka, Y.; Ueda, S.; Vagins, M. R.; Walter, C. W.; Wang, W.; Wilkes, R. J.; Yamada, S.; Yamamoto, S.; Yanagisawa, C.; Yershov, N.; Yokoyama, H.; Yokoyama, M.; Yoo, J.; Yoshida, M.; Zalipska, J. (American Physical Society, 2005-03-04)
    We present results for νμ oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced νμ beam with a mean energy of 1.3 GeV directed at the Super-Kamiokande detector. We observed the energy dependent disappearance of νμ, which we presume have oscillated to ντ. The probability that we would observe these results if there is no neutrino oscillation is 0.0050% (4.0σ).
  • Land clearing and the biofuel carbon debt
    Fargione, J.; Hill, J.; Tilman, D.; Polasky, S.; Hawthorne, P. (Sciencexpress, 2008)
    Increasing energy use, climate change, and carbon dioxide (CO2) emissions from fossil fuels make switching to low-carbon fuels a high priority. Biofuels are a potential low-carbon energy source, but whether biofuels offer carbon savings depends on how they are produced. Converting rainforests, peatlands, savannas, or grasslands to produce food crop-based biofuels in Brazil, Southeast Asia, and the United States creates a "biofuel carbon debt" by releasing 17 to 420 times more CO2 than the annual greenhouse gas (GHG) reductions that these biofuels would provide by displacing fossil fuels. In contrast, biofuels made from waste biomass or from biomass grown on degraded and abandoned agricultural lands planted with perennials incur little or no carbon debt and can offer immediate and sustained GHG advantages.
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    Measurement of neutrino oscillation by the K2K experiment
    Ahn, M. H.; Aliu, E.; Andringa, S.; Aoki, S.; Aoyama, Y.; Argyriades, J.; Asakura, K.; Ashie, R.; Berghaus, F.; Berns, H. G.; Bhang, H.; Blondel, A.; Borghi, S.; Bouchez, J.; Boyd, S. C.; Burguet-Castell, J.; Casper, D.; Catala, J.; Cavata, C.; Cervera, A.; Chen, S. M.; Cho, K. O.; Choi, J. H.; Dore, U.; Echigo, S.; Espinal, X.; Fechner, M.; Fernandez, E.; Fujii, K.; Fujii, Y.; Fukuda, S.; Fukuda, Y.; Gomez-Cadenas, J. J.; Gran, R.; Hara, T.; Hasegawa, M.; Hasegawa, T.; Hayashi, K.; Hayato, Y.; Helmer, R. L.; Higuchi, I.; Hill, J.; Hiraide, K.; Hirose, E.; Hosaka, J.; Ichikawa, A. K.; Ieiri, M.; Iinuma, M.; Ikeda, A.; Inagaki, T.; Ishida, T.; Ishihara, K.; Ishii, H.; Ishii, T.; Ishino, H.; Ishitsuka, M.; Itow, Y.; Iwashita, T.; Jang, H. I.; Jang, J. S.; Jeon, E. J.; Jeong, I. S.; Joo, K. K.; Jover, G.; Jung, C. K.; Kajita, T.; Kameda, J.; Kaneyuki, K.; Kang, B. H.; Kato, I.; Kato, Y.; Kearns, E.; Kerr, D.; Kim, C. O.; Khabibullin, M.; Khotjantsev, A.; Kielczewska, D.; Kim, B. J.; Kim, H. I.; Kim, J. H.; Kim, J. Y.; Kim, S. B.; Kitamura, M.; Kitching, P.; Kobayashi, K.; Kobayashi, T.; Kohama, M.; Konaka, A.; Koshio, Y.; Kropp, W.; Kubota, J.; Kudenko, Y.; Kume, G.; Kuno, Y.; Kurimoto, Y.; Kutter, T.; Learned, J.; Likhoded, S.; Lim, I. T.; Lim, S. H.; Loverre, P. F.; Ludovici, L.; Maesaka, H.; Mallet, J.; Mariani, Camillo; Martens, K.; Maruyama, T.; Matsuno, S.; Matveev, V. A.; Mauger, C.; Mahn, K. B. M.; McGrew, C.; Mikheyev, S.; Minakawa, M.; Minamino, A.; Mine, S.; Mineev, O.; Mitsuda, C.; Mitsuka, G.; Miura, M.; Moriguchi, Y.; Morita, T.; Moriyama, S.; Nakadaira, T.; Nakahata, M.; Nakamura, K.; Nakano, I.; Nakata, F.; Nakaya, T.; Nakayama, S.; Namba, T.; Nambu, R.; Nawang, S.; Nishikawa, K.; Nishino, H.; Nishiyama, S.; Nitta, K.; Noda, S.; Noumi, H.; Nova, F.; Novella, P.; Obayashi, Y.; Okada, A.; Okumura, K.; Okumura, M.; Onchi, M.; Ooyabu, T.; Oser, S. M.; Otaki, T.; Oyama, Y.; Pac, M. Y.; Park, H.; Pierre, F.; Rodriguez, A.; Saji, C.; Sakai, A.; Sakuda, M.; Sakurai, N.; Sanchez, F.; Sarrat, A.; Sasaki, T.; Sato, H.; Sato, K.; Scholberg, K.; Schroeter, R.; Sekiguchi, M.; Seo, E.; Sharkey, E.; Shima, A.; Shiozawa, M.; Shiraishi, K. K.; Sitjes, G.; Smy, M.; So, H.; Sobel, H.; Sorel, M.; Stone, J.; Sulak, L.; Suga, Y.; Suzuki, A.; Suzuki, Y.; Suzuki, Y.; Tada, M.; Takahashi, T.; Takasaki, M.; Takatsuki, M.; Takenaga, Y.; Takenaka, K.; Takeuchi, H.; Takeuchi, Y.; Taki, K.; Takubo, Y.; Tamura, N.; Tanaka, H.; Tanaka, K.; Tanaka, M.; Tanaka, Y.; Tashiro, K.; Terri, R.; T'Jampens, S.; Tornero-Lopez, A.; Toshito, T.; Totsuka, Y.; Ueda, S.; Vagins, M. R.; Whitehead, L.; Walter, C. W.; Wang, W.; Wilkes, R. J.; Yamada, S.; Yamada, Y.; Yamamoto, S.; Yamanoi, Y.; Yanagisawa, C.; Yershov, N.; Yokoyama, H.; Yokoyama, M.; Yoo, J.; Yoshida, M.; Zalipska, J. (American Physical Society, 2006-10-01)
    We present measurements of νμ 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 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% (4.3σ). In a two flavor oscillation scenario, the allowed Δm2 region at sin2 2θ = 1 is between 1.9 and 3.5 × 10−3 eV2 at the 90% C.L. with a best-fit value of 2.8 × 10−3 eV2.
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    Search for coherent charged pion production in neutrino-carbon interactions
    Hasegawa, M.; Aliu, E.; Andringa, S.; Aoki, S.; Argyriades, J.; Asakura, K.; Ashie, R.; Berns, H.; Bhang, H.; Blondel, A.; Borghi, S.; Bouchez, J.; Burguet-Castell, J.; Casper, D.; Cavata, C.; Cervera, A.; Chen, S. M.; Cho, K. O.; Choi, J. H.; Dore, U.; Espinal, X.; Fechner, M.; Fernandez, E.; Fukuda, Y.; Gomez-Cadenas, J. J.; Gran, R.; Hara, T.; Hasegawa, T.; Hayashi, K.; Hayato, Y.; Helmer, R. L.; Hill, J.; Hiraide, K.; Hosaka, J.; Ichikawa, A. K.; Iinuma, M.; Ikeda, A.; Inagaki, T.; Ishida, T.; Ishihara, K.; Ishii, T.; Ishitsuka, M.; Itow, Y.; Iwashita, T.; Jang, H. I.; Jeon, E. J.; Jeong, I. S.; Joo, K. K.; Jover, G.; Jung, C. K.; Kajita, T.; Kameda, J.; Kaneyuki, K.; Kato, I.; Kearns, E.; Kerr, D.; Kim, C. O.; Khabibullin, M.; Khotjantsev, A.; Kielczewska, D.; Kim, J. Y.; Kim, S. B.; Kitching, P.; Kobayashi, K.; Kobayashi, T.; Konaka, A.; Koshio, Y.; Kropp, W.; Kubota, J.; Kudenko, Y.; Kuno, Y.; Kutter, T.; Learned, J.; Likhoded, S.; Lim, I. T.; Loverre, P. F.; Ludovici, L.; Maesaka, H.; Mallet, J.; Mariani, Camillo; Maruyama, T.; Matsuno, S.; Matveev, V. A.; Mauger, C.; McConnel, K.; McGrew, C.; Mikheyev, S.; Minamino, A.; Mine, S.; Mineev, O.; Mitsuda, C.; Miura, M.; Moriguchi, Y.; Morita, T.; Moriyama, S.; Nakadaira, T.; Nakahata, M.; Nakamura, K.; Nakano, I.; Nakaya, T.; Nakayama, S.; Namba, T.; Nambu, R.; Nawang, S.; Nishikawa, K.; Nitta, K.; Nova, F.; Novella, P.; Obayashi, Y.; Okada, A.; Okumura, K.; Oser, S. M.; Oyama, Y.; Pac, M. Y.; Pierre, F.; Rodriguez, A.; Saji, C.; Sakuda, M.; Sanchez, F.; Sarrat, A.; Sasaki, T.; Sato, H.; Scholberg, K.; Schroeter, R.; Sekiguchi, M.; Sharkey, E.; Shiozawa, M.; Shiraishi, K. K.; Sitjes, G.; Smy, M.; Sobel, H.; Stone, J.; Sulak, L.; Suzuki, A.; Suzuki, Y.; Takahashi, T.; Takenaga, Y.; Takeuchi, Y.; Taki, K.; Takubo, Y.; Tamura, N.; Tanaka, M.; Terri, R.; T'Jampens, S.; Tornero-Lopez, A.; Totsuka, Y.; Ueda, S.; Vagins, M. R.; Whitehead, L.; Walter, C. W.; Wang, W.; Wilkes, R. J.; Yamada, S.; Yamamoto, S.; Yanagisawa, C.; Yershov, N.; Yokoyama, H.; Yokoyama, M.; Yoo, J.; Yoshida, M.; Zalipska, J. (American Physical Society, 2005-12-16)
    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 0.60×10−2 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.