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1. Health Resource and Cost Savings Achieved in a Multidisciplinary Lung Cancer Clinic

Author

Christopher J. L. Stone, Ana P. Johnson, Danielle Robinson, Andriy Katyukha, Rylan Egan, Sophia Linton, Christopher Parker, Andrew Robinson, and Geneviève C. Digby

Subjects
lung cancer, quality improvement, resource utilization, patient care, health economics, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Background: Lung cancer (LC) care is resource and cost intensive. We launched a Multidisciplinary LC Clinic (MDC), where patients with a new LC diagnosis received concurrent oncology consultation, resulting in improved time to LC assessment and treatment. Here, we evaluate the impact of MDC on health resource utilization, patient and caregiver costs, and secondary patient benefits. Methods: We retrospectively analyzed patients in a rapid assessment clinic with a new LC diagnosis pre-MDC (September 2016–February 2017) and post-MDC implementation (February 2017–December 2018). Data are reported as means; unpaired t-tests and ANOVA were used to assess for significance. We also conducted a cost analysis. Resource utilization, out-of-pocket costs, procedure-related costs, and indirect costs were evaluated from the societal perspective and presented in 2019 Canadian dollars (CAD); multi-way worst/best case and threshold sensitivity analyses were conducted. Results: We reviewed 428 patients (78 traditional model, 350 MDC). Patients in the MDC model required significantly fewer oncology visits from LC diagnosis to first LC treatment (1.62 vs. 2.68, p < 0.001), which was significant for patients with stage 1, 3, and 4 disease. Compared with the traditional model, there was no change in mean biopsies/patient (1.32 traditional vs. 1.17 MDC, p = 0.18) or staging investigations/patient (2.24 traditional vs. 2.02 MDC, p = 0.20). Post-MDC, there was an increase in invasive mediastinal staging for patients with stage 2/3 LC (15.0% vs. 60.0%, p < 0.001). Over 22 months, MDC resulted in savings of CAD 48,389 including CAD 24,167 CAD in direct patient out-of-pocket expenses. For the threshold analyses, MDC was estimated to cost CAD 25,708 per quality-adjusted life year (QALY), considered to be below current willingness to pay thresholds (at CAD 80,000 per QALY). MDC also facilitated oncology assessment for 29 non-LC patients. Conclusions: An MDC led to a reduction in patient visits and direct patient and caregiver costs.

Published
2021
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2. Health Resource and Cost Savings Achieved in a Multidisciplinary Lung Cancer Clinic

Author

Geneviève C. Digby, Andrew Robinson, Danielle Robinson, Ana P. Johnson, Andriy Katyukha, Rylan Egan, Christopher M. Parker, Sophia Linton, and Christopher J. L. Stone

Subjects
Canada, medicine.medical_specialty, Lung Neoplasms, Article, quality improvement, 03 medical and health sciences, Indirect costs, 0302 clinical medicine, Cost Savings, Multidisciplinary approach, Humans, Medicine, health economics, 030212 general & internal medicine, Stage (cooking), Lung cancer, RC254-282, Retrospective Studies, Health economics, business.industry, patient care, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, Health resource, medicine.disease, Cost savings, resource utilization, lung cancer, 030220 oncology & carcinogenesis, Emergency medicine, Health Resources, business, Resource utilization
Abstract

Background: Lung cancer (LC) care is resource and cost intensive. We launched a Multidisciplinary LC Clinic (MDC), where patients with a new LC diagnosis received concurrent oncology consultation, resulting in improved time to LC assessment and treatment. Here, we evaluate the impact of MDC on health resource utilization, patient and caregiver costs, and secondary patient benefits. Methods: We retrospectively analyzed patients in a rapid assessment clinic with a new LC diagnosis pre-MDC (September 2016–February 2017) and post-MDC implementation (February 2017–December 2018). Data are reported as means, unpaired t-tests and ANOVA were used to assess for significance. We also conducted a cost analysis. Resource utilization, out-of-pocket costs, procedure-related costs, and indirect costs were evaluated from the societal perspective and presented in 2019 Canadian dollars (CAD), multi-way worst/best case and threshold sensitivity analyses were conducted. Results: We reviewed 428 patients (78 traditional model, 350 MDC). Patients in the MDC model required significantly fewer oncology visits from LC diagnosis to first LC treatment (1.62 vs. 2.68, p &lt, 0.001), which was significant for patients with stage 1, 3, and 4 disease. Compared with the traditional model, there was no change in mean biopsies/patient (1.32 traditional vs. 1.17 MDC, p = 0.18) or staging investigations/patient (2.24 traditional vs. 2.02 MDC, p = 0.20). Post-MDC, there was an increase in invasive mediastinal staging for patients with stage 2/3 LC (15.0% vs. 60.0%, p &lt, 0.001). Over 22 months, MDC resulted in savings of CAD 48,389 including CAD 24,167 CAD in direct patient out-of-pocket expenses. For the threshold analyses, MDC was estimated to cost CAD 25,708 per quality-adjusted life year (QALY), considered to be below current willingness to pay thresholds (at CAD 80,000 per QALY). MDC also facilitated oncology assessment for 29 non-LC patients. Conclusions: An MDC led to a reduction in patient visits and direct patient and caregiver costs.

Published
2021

3. Search for supernova bursts in Super-Kamiokande IV

Author

M. Mori, K. Abe, Y. Hayato, K. Hiraide, K. Ieki, M. Ikeda, S. Imaizumi, J. Kameda, Y. Kanemura, R. Kaneshima, Y. Kashiwagi, Y. Kataoka, S. Miki, S. Mine, M. Miura, S. Moriyama, Y. Nagao, M. Nakahata, Y. Nakano, S. Nakayama, Y. Noguchi, T. Okada, K. Okamoto, A. Orii, K. Sato, H. Sekiya, H. Shiba, K. Shimizu, M. Shiozawa, Y. Sonoda, Y. Suzuki, A. Takeda, Y. Takemoto, A. Takenaka, H. Tanaka, T. Tomiya, S. Watanabe, T. Yano, S. Yoshida, S. Han, T. Kajita, K. Okumura, T. Tashiro, X. Wang, J. Xia, G. D. Megias, D. Bravo-Berguño, P. Fernandez, L. Labarga, N. Ospina, B. Zaldivar, S. Zsoldos, B. W. Pointon, F. D. M. Blaszczyk, E. Kearns, J. L. Raaf, J. L. Stone, L. Wan, T. Wester, J. Bian, N. J. Griskevich, W. R. Kropp, S. Locke, M. B. Smy, H. W. Sobel, V. Takhistov, Yankelevich A., J. Hill, J. Y. Kim, I. T. Lim, R. G. Park, B. Bodur, K. Scholberg, C. W. Walter, L. Bernard, A. Coffani, O. Drapier, S. El Hedri, A. Giampaolo, Th. A. Mueller, P. Paganini, B. Quilain, A. D. Santos, T. Ishizuka, T. Nakamura, J. S. Jang, J. G. Learned, L. H. V. Anthony, D. Martin, M. Scott, A. A. Sztuc, Y. Uchida, V. Berardi, M. G. Catanesi, E. Radicioni, N. F. Calabria, L. N. Machado, G. De Rosa, G. Collazuol, F. Iacob, M. Lamoureux, M. Mattiazzi, L. Ludovici, M. Gonin, G. Pronost, Y. Maekawa, Y. Nishimura, C. Fujisawa, M. Friend, T. Hasegawa, T. Ishida, T. Kobayashi, M. Jakkapu, T. Matsubara, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, H. Ozaki, T. Shiozawa, A. T. Suzuki, Y. Takeuchi, S. Yamamoto, Y. Kotsar, Y. Ashida, C. Bronner, J. Feng, S. Hirota, T. Kikawa, T. Nakaya, R. A. Wendell, K. Yasutome, N. McCauley, P. Mehta, K. M. Tsui, Y. Fukuda, Y. Itow, H. Menjo, K. Ninomiya, T. Niwa, M. Tsukada, J. Lagoda, S. M. Lakshmi, P. Mijakowski, J. Zalipska, M. Mandal, Y. S. Prabhu, J. Jiang, C. K. Jung, C. Vilela, M. J. Wilking, C. Yanagisawa, M. Jia, K. Hagiwara, M. Harada, T. Horai, H. Ishino, S. Ito, H. Kitagawa, Y. Koshio, W. Ma, F. Nakanishi, N. Piplani, S. Sakai, G. Barr, D. Barrow, L. Cook, S. Samani, D. Wark, F. Nova, T. Boschi, J. Gao, A. Goldsack, T. Katori, F. Di Lodovico, J. Migenda, M. Taani, J. Y. Yang, S. J. Jenkins, M. Malek, J. M. McElwee, O. Stone, M. D. Thiesse, L. F. Thompson, H. Okazawa, S. B. Kim, J. W. Seo, I. Yu, K. Nishijima, M. Koshiba, K. Nakagiri, Y. Nakajima, K. Iwamoto, N. Taniuchi, M. Yokoyama, K. Martens, P. de Perio, M. R. Vagins, M. Kuze, S. Izumiyama, T. Yoshida, M. Inomoto, M. Ishitsuka, H. Ito, T. Kinoshita, R. Matsumoto, K. Ohta, Y. Ommura, N. Shigeta, M. Shinoki, T. Suganuma, K. Yamauchi, J. F. Martin, H. A. Tanaka, T. Towstego, R. Akutsu, V. Gousy-Leblanc, M. Hartz, A. Konaka, N. W. Prouse, S. Chen, B. D. Xu, B. Zhang, M. Posiadala-Zezula, D. Hadley, M. Nicholson, M. O’Flaherty, B. Richards, A. Ali, B. Jamieson, J. Walker, Ll. Marti, A. Minamino, G. Pintaudi, R. Sasaki, S. Sano, S. Suzuki, K. Wada, S. Cao, A. ichikawa, K. D. Nakamura, S. Tairafune, K. Choi, Mori, M., Abe, K., Hayato, Y., Hiraide, K., Ieki, K., Ikeda, M., Imaizumi, S., Kameda, J., Kanemura, Y., Kaneshima, R., Kashiwagi, Y., Kataoka, Y., Miki, S., Mine, S., Miura, M., Moriyama, S., Nagao, Y., Nakahata, M., Nakano, Y., Nakayama, S., Noguchi, Y., Okada, T., Okamoto, K., Orii, A., Sato, K., Sekiya, H., Shiba, H., Shimizu, K., Shiozawa, M., Sonoda, Y., Suzuki, Y., Takeda, A., Takemoto, Y., Takenaka, A., Tanaka, H., Tomiya, T., Watanabe, S., Yano, T., Yoshida, S., Han, S., Kajita, T., Okumura, K., Tashiro, T., Wang, X., Xia, J., Megias, G. D., Bravo-Bergu??o, D., Fernandez, P., Labarga, L., Ospina, N., Zaldivar, B., Zsoldos, S., Pointon, B. W., Blaszczyk, F. D. M., Kearns, E., Raaf, J. L., Stone, J. L., Wan, L., Wester, T., Bian, J., Griskevich, N. J., Kropp, W. R., Locke, S., Smy, M. B., Sobel, H. W., Takhistov, V., A., Yankelevich, Hill, J., Kim, J. Y., Lim, I. T., Park, R. G., Bodur, B., Scholberg, K., Walter, C. W., Bernard, L., Coffani, A., Drapier, O., El Hedri, S., Giampaolo, A., Mueller, Th. A., Paganini, P., Quilain, B., Santos, A. D., Ishizuka, T., Nakamura, T., Jang, J. S., Learned, J. G., Anthony, L. H. V., Martin, D., Scott, M., Sztuc, A. A., Uchida, Y., Berardi, V., Catanesi, M. G., Radicioni, E., Calabria, N. F., Nascimento Machado, L., De Rosa, G., Collazuol, G., Iacob, F., Lamoureux, M., Mattiazzi, M., Ludovici, L., Gonin, M., Pronost, G., Maekawa, Y., Nishimura, Y., Fujisawa, C., Friend, M., Hasegawa, T., Ishida, T., Kobayashi, T., Jakkapu, M., Matsubara, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Ozaki, H., Shiozawa, T., Suzuki, A. T., Takeuchi, Y., Yamamoto, S., Kotsar, Y., Ashida, Y., Bronner, C., Feng, J., Hirota, S., Kikawa, T., Nakaya, T., Wendell, R. A., Yasutome, K., Mccauley, N., Mehta, P., Tsui, K. M., Fukuda, Y., Itow, Y., Menjo, H., Ninomiya, K., Niwa, T., Tsukada, M., Lagoda, J., Lakshmi, S. M., Mijakowski, P., Zalipska, J., Mandal, M., Prabhu, Y. S., Jiang, J., Jung, C. K., Vilela, C., Wilking, M. J., Yanagisawa, C., Jia, M., Hagiwara, K., Harada, M., Horai, T., Ishino, H., Ito, S., Kitagawa, H., Koshio, Y., Ma, W., Nakanishi, F., Piplani, N., Sakai, S., Barr, G., Barrow, D., Cook, L., Samani, S., Wark, D., Nova, F., Boschi, T., Gao, J., Goldsack, A., Katori, T., Di Lodovico, F., Migenda, J., Taani, M., Yang, J. Y., Jenkins, S. J., Malek, M., Mcelwee, J. M., Stone, O., Thiesse, M. D., Thompson, L. F., Okazawa, H., Kim, S. B., Seo, J. W., Yu, I., Nishijima, K., Koshiba, M., Nakagiri, K., Nakajima, Y., Iwamoto, K., Taniuchi, N., Yokoyama, M., Martens, K., de Perio, P., Vagins, M. R., Kuze, M., Izumiyama, S., Yoshida, T., Inomoto, M., Ishitsuka, M., Ito, H., Kinoshita, T., Matsumoto, R., Ohta, K., Ommura, Y., Shigeta, N., Shinoki, M., Suganuma, T., Yamauchi, K., Martin, J. F., Tanaka, H. A., Towstego, T., Akutsu, R., Gousy-Leblanc, V., Hartz, M., Konaka, A., Prouse, N. W., Chen, S., Xu, B. D., Zhang, B., Posiadala-Zezula, M., Hadley, D., Nicholson, M., O???flaherty, M., Richards, B., Ali, A., Jamieson, B., Walker, J., Marti, Ll., Minamino, A., Pintaudi, G., Sasaki, R., Sano, S., Suzuki, S., Wada, K., Cao, S., Ichikawa, A., Nakamura, K. D., Tairafune, S., and Choi, K.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, High Energy Physics - Experiment, Supernova neutrinos, High Energy Physics - Experiment (hep-ex), Space and Planetary Science, Core-collapse supernovae Supernova neutrinos Particle astrophysics, Core-collapse supernovae, Particle astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics
Abstract

Super-Kamiokande has been searching for neutrino bursts characteristic of core-collapse supernovae continuously, in real time, since the start of operations in 1996. The present work focuses on detecting more distant supernovae whose event rate may be too small to trigger in real time, but may be identified using an offline approach. The analysis of data collected from 2008 to 2018 found no evidence of distant supernovae bursts. This establishes an upper limit of 0.29 yr−1 on the rate of core-collapse supernovae out to 100 kpc at 90% C.L. For supernovae that fail to explode and collapse directly to black holes the limit reaches to 300 kpc.

Published
2022

4. Operationalizing care in a hospital-based respirology clinic during a global pandemic

Author

Sunita Mulpuru, Melanie Chin, Nha Voduc, and Christopher J. L. Stone

Subjects
Pulmonary and Respiratory Medicine, Strategic planning, medicine.medical_specialty, business.industry, Public health, Critical Care and Intensive Care Medicine, medicine.disease, Ambulatory care, Preparedness, Pandemic, Medicine, Infection control, Medical emergency, business, Personal protective equipment, Respiratory care
Abstract

The novel coronavirus (SARS-CoV-2) pandemic has forced clinicians across Canada to abruptly adapt to a new reality of reduced contact with patients in ambulatory care settings With minimal lead time, ambulatory clinics in Canada were required to adopt aggressive infection prevention and control measures while facing shortages of personal protective equipment and to enact strategies to urgently reorganize patient care These adaptations included the conversion of ambulatory clinics to telephone or virtual care platforms In 2015, the Public Health Agency of Canada (PHAC) published pandemic influenza preparedness guidelines highlighting the importance of pandemic preparedness planning in primary and ambulatory care settings, including clinic continuity planning and provisions for non in-person care Despite these recommendations, hospital-based ambulatory clinics lacked formal strategic plans to adapt patient care processes during the SARS-CoV-2 outbreak Thus, in a short time frame, clinics individually adapted their own patient care processes This creates the potential for gaps in quality of medical care for patients across Canada In this report, we describe the evolution and operationalization of care planning in our hospital-based respirology clinic, highlight the challenges faced, and make recommendations for respirology clinic adaptations based on available guidance This process may be used as a foundation to guide future policy, discussion and guidelines for hospital-based respiratory care to ensure optimal preparedness during the next inevitable respiratory viral pandemic or possible worsening of the current pandemic © 2020 Canadian Thoracic Society

Published
2020

5. Search for neutrinos in coincidence with gravitational wave events from the LIGO–Virgo O3a observing run with the Super-Kamiokande detector

Author

Y. Kanemura, A. Giampaolo, W. R. Kropp, Y. Hayato, A. A. Sztuc, P. Mehta, Pablo Fernandez, T. Hasegawa, F. Iacob, D. Bravo-Berguño, Y. Kuno, T. Towstego, O. Drapier, H. Ito, Sei-ichiro Watanabe, G.D. Barr, J. Bian, N. Piplani, S. Miki, S. V. Cao, M. R. Vagins, K. Martens, Y. Takemoto, L. F. Thompson, S. Imaizumi, A. Coffani, O. Stone, J. S. Jang, M. Taani, Seiko Hirota, T. Kikawa, M. Gonin, J. Xia, Masahiro Kuze, A. Goldsack, S. Han, M. J. Wilking, R. A. Wendell, M. B. Smy, Junjie Jiang, F. Nova, E. Radicioni, Kimihiro Okumura, B. Zaldivar, J. Y. Kim, S. Izumiyama, A. Orii, S. Mine, L. Cook, J. Migenda, John Hill, A. T. Suzuki, K. Okamoto, T. Horai, R. Sasaki, J. F. Martin, J. Kameda, B. Bodur, Yuichi Oyama, T. Nakadaira, J. McElwee, J. L. Stone, I. T. Lim, F. Di Lodovico, D. L. Wark, Vincenzo Berardi, Y. Maekawa, S. El Hedri, T. Sekiguchi, L. Ludovici, Th. A. Mueller, N. Ospina, K. Ohta, G. De Rosa, Hiromasa Tanaka, V. Takhistov, Hiroaki Menjo, C. Simpson, J. G. Learned, K. M. Tsui, P. Mijakowski, J. Y. Yang, K. Abe, J. L. Raaf, M. Tsukada, M. Thiesse, K. Iwamoto, H. K. Tanaka, Yasunari Suzuki, S. Samani, G. D. Megias, A. Konaka, M. G. Catanesi, N. J. Griskevich, Y. Nishimura, David Hadley, F. d. M. Blaszczyk, M. Inomoto, S. Locke, Masaki Ishitsuka, M. Jakkapu, Yusuke Koshio, S. Sakai, D. Barrow, M. Lamoureux, P. Weatherly, P. de Perio, T. Boschi, T. Niwa, K. Nakamura, T. Yoshida, A. Pritchard, C. K. Jung, R. Matsumoto, M. Hartz, T. Shiozawa, C. Vilela, Ahmed Ali, M. Koshiba, Masato Shiozawa, H. Ozaki, T. Tashiro, S. Moriyama, S. Nakayama, R. Akutsu, L. H. V. Anthony, Hussain Kitagawa, S. J. Jenkins, B. Jamieson, R. G. Park, Song Chen, P. Paganini, M. Miura, Masayuki Nakahata, H. W. Sobel, Yuuki Nakano, Y. Uchida, B. D. Xu, Ll. Marti, Kate Scholberg, K. Hagiwara, Yutaka Nakajima, B. W. Pointon, D. Martin, Manabu Tanaka, K. Sato, G. Pintaudi, H. Okazawa, M. Ikeda, L. Wan, S. Molina Sedgwick, Hirokazu Ishino, Y. Kotsar, N. F. Calabria, Yuto Ashida, C. Yanagisawa, E. Kearns, C. Bronner, Masashi Yokoyama, Intae Yu, K. Yasutome, T. Nakamura, G. Collazuol, J. Walker, L. N. Machado, N. Ogawa, K. Nishijima, T. Wester, L. Bernard, T. Ishizuka, M. Harada, Tsuyoshi Nakaya, Y. Nagao, Atsushi Takeda, A. Minamino, Rongkun Wang, S. B. Kim, M. Shinoki, A. K. Ichikawa, N. McCauley, L. Labarga, T. Kobayashi, M. Malek, N. W. Prouse, B. Richards, T. Matsubara, S. Yamamoto, C. W. Walter, K. Sakashita, J. Feng, M. Posiadala-Zezula, W. Ma, B. Quilain, Hiroyuki Sekiya, Y. Kataoka, Y. Fukuda, Y. Takeuchi, T. Kajita, Takatomi Yano, M. Friend, M. Mori, Y. Sonoda, S. Sano, Yoshitaka Itow, G. Pronost, Shintaro Ito, S. Zsoldos, T. Tsukamoto, T. Okada, T. Ishida, A. Takenaka, UAM. Departamento de Física Teórica, 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, Abe, K., Bronner, C., Hayato, Y., Ikeda, M., Imaizumi, S., Kameda, J., Kanemura, Y., Kataoka, Y., Miki, S., Miura, M., Moriyama, S., Nagao, Y., Nakahata, M., Nakayama, S., Okada, T., Okamoto, K., Orii, A., Pronost, G., Sekiya, H., Shiozawa, M., Sonoda, Y., Suzuki, Y., Takeda, A., Takemoto, Y., Takenaka, A., Tanaka, H., Watanabe, S., Yano, T., Han, S., Kajita, T., Okumura, K., Tashiro, T., Wang, R., Xia, J., Megias, G. D., Bravo-Berguno, D., Labarga, L., Marti, Ll., Zaldivar, B., Pointon, B. W., Blaszczyk, F. D. M., Kearns, E., Raaf, J. L., Stone, J. L., Wan, L., Wester, T., Bian, J., Griskevich, N. J., Kropp, W. R., Locke, S., Mine, S., Smy, M. B., Sobel, H. W., Takhistov, V., Weatherly, P., Hill, J., Kim, J. Y., Lim, I. T., Park, R. G., Bodur, B., Scholberg, K., Walter, C. W., Bernard, L., Coffani, A., Drapier, O., El Hedri, S., Giampaolo, A., Gonin, M., Mueller, Th. A., Paganini, P., Quilain, B., Ishizuka, T., Nakamura, T., Jang, J. S., Learned, J. G., Anthony, L. H. V., Martin, D. G. R., Sztuc, A. A., Uchida, Y., Berardi, V., Catanesi, M. G., Radicioni, E., Calabria, N. F., Nascimento Machado, L., de Rosa, G., Collazuol, G., Iacob, F., Lamoureux, M., Ospina, N., Ludovici, L., Maekawa, Y., Nishimura, Y., Cao, S., Friend, M., Hasegawa, T., Ishida, T., Jakkapu, M., Kobayashi, T., Matsubara, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Kotsar, Y., Nakano, Y., Ozaki, H., Shiozawa, T., Suzuki, A. T., Takeuchi, Y., Yamamoto, S., Ali, A., Ashida, Y., Feng, J., Hirota, S., Kikawa, T., Mori, M., Nakaya, T., Wendell, R. A., Yasutome, K., Fernandez, P., Mccauley, N., Mehta, P., Pritchard, A., Tsui, K. M., Fukuda, Y., Itow, Y., Menjo, H., Niwa, T., Sato, K., Tsukada, M., Mijakowski, P., Jiang, J., Jung, C. K., Vilela, C., Wilking, M. J., Yanagisawa, C., Hagiwara, K., Harada, M., Horai, T., Ishino, H., Ito, S., Koshio, Y., Kitagawa, H., Ma, W., Piplani, N., Sakai, S., Kuno, Y., Barr, G., Barrow, D., Cook, L., Goldsack, A., Samani, S., Simpson, C., Wark, D., Nova, F., Boschi, T., Di Lodovico, F., Migenda, J., Molina Sedgwick, S., Taani, M., Zsoldos, S., Yang, J. Y., Jenkins, S. J., Malek, M., Mcelwee, J. M., Stone, O., Thiesse, M. D., Thompson, L. F., Okazawa, H., Kim, S. B., Yu, I., Nishijima, K., Koshiba, M., Iwamoto, K., Nakajima, Y., Ogawa, N., Yokoyama, M., Martens, K., Vagins, M. R., Izumiyama, S., Kuze, M., Tanaka, M., Yoshida, T., Inomoto, M., Ishitsuka, M., Ito, H., Matsumoto, R., Ohta, K., Shinoki, M., Martin, J. F., Tanaka, H. A., Towstego, T., Akutsu, R., Hartz, M., Konaka, A., de Perio, P., Prouse, N. W., Chen, S., Xu, B. D., Posiadala-Zezula, M., Hadley, D., Richards, B., Jamieson, B., Walker, J., Minamino, A., Pintaudi, G., Sano, S., Sasaki, R., and Ichikawa, A. K.

Subjects
Astrophysics, KAMIOKANDE, Neutrino Astronomy, GeV, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Neutrino astronomy Gravitational wave astronomy High energy astrophysics Black holes Compact objects Neutron stars Transient sources, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], LIGO, 010303 astronomy & astrophysics, QC, QB, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), energy: emission, Black holes, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, High energy astrophysics, High-energy astronomy, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Gravitational-wave astronomy, Neutron stars, neutrino: spectrum, 0103 physical sciences, Instrumentation and Methods for Astrophysics (astro-ph.IM), Compact objects, flavor, 010308 nuclear & particles physics, Gravitational wave, background, gravitational radiation, Física, Astronomy and Astrophysics, trigger, Transient sources, flux, Neutron star, VIRGO, Space and Planetary Science, High Energy Physics::Experiment, Gravitational wave astronomy, Neutrino astronomy, Super-Kamiokande, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], statistical
Abstract

The Super-Kamiokande detector can be used to search for neutrinos in time coincidence with gravitational waves detected by the LIGO-Virgo Collaboration (LVC). Both low-energy ($7-100$ MeV) and high-energy ($0.1-10^5$ GeV) samples were analyzed in order to cover a very wide neutrino spectrum. Follow-ups of 36 (out of 39) gravitational waves reported in the GWTC-2 catalog were examined; no significant excess above the background was observed, with 10 (24) observed neutrinos compared with 4.8 (25.0) expected events in the high-energy (low-energy) samples. A statistical approach was used to compute the significance of potential coincidences. For each observation, p-values were estimated using neutrino direction and LVC sky map ; the most significant event (GW190602_175927) is associated with a post-trial p-value of $7.8\%$ ($1.4\sigma$). Additionally, flux limits were computed independently for each sample and by combining the samples. The energy emitted as neutrinos by the identified gravitational wave sources was constrained, both for given flavors and for all-flavors assuming equipartition between the different flavors, independently for each trigger and by combining sources of the same nature., Comment: 16 pages, 5 figures. v2: adding corrections from The Astrophysical Journal review

Published
2021

6. 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

7. Search for proton decay via p→e+π0 and p→μ+π0 with an enlarged fiducial volume in Super-Kamiokande I-IV

Author

J. S. Jang, B. Bodur, Yuji Kishimoto, L. H. V. Anthony, Rongkun Wang, J. L. Raaf, L. Labarga, K. Nakamura, T. Niwa, T. Kobayashi, F. d. M. Blaszczyk, M. Jakkapu, M. Hartz, Y. Nishimura, P. Weatherly, S. Moriyama, Y. Isobe, T. Boschi, Hiroshi Ito, B. Richards, G. Santucci, Masayuki Nakahata, N. Ospina, Y. Uchida, V. Takhistov, C. K. Jung, M. Mori, M. Taani, Y. Sonoda, M. Ikeda, M. Koshiba, P. de Perio, T. Yano, A. T. Suzuki, K. Okamoto, J. F. Martin, Masato Shiozawa, Y. Choi, Yoshitaka Itow, H. Okazawa, G. Pintaudi, E. Radicioni, L. Ludovici, W. R. Kropp, K. Sakashita, Yutaka Nakajima, C. Xu, Hiroaki Menjo, P. Paganini, M. Miura, T. Nakadaira, G. Pronost, F. Iacob, R. G. Park, B. D. Xu, N. F. Calabria, O. Drapier, Makoto Sakuda, Ke. Nakamura, M. Jiang, A. Coffani, M. Posiadala-Zezula, T. Horai, Ko Okumura, H. W. Sobel, S. Matsuno, A. Giampaolo, S. Molina Sedgwick, Yuuki Nakano, T. Mochizuki, T. Tashiro, T. Towstego, S. Imaizumi, K. Hagiwara, H.A. Tanaka, S. Cao, S. Sakai, B. W. Pointon, F. Nova, R. Sasaki, R. Matsumoto, Intae Yu, P. Mehta, Y. Kataoka, D. Fukuda, C. Bronner, M. G. Catanesi, S. Han, Pablo Fernandez, H. Miyabe, M. J. Wilking, Yuichi Oyama, R. P. Litchfield, C. M. Nantais, D. Bravo-Berguño, B. Quilain, J. G. Learned, K. Yasutome, S. Zsoldos, Y. Kuno, Ke. Abe, K. Nishijima, S. Locke, Atsushi Takeda, J. C. Hill, K. Ohta, T. Wester, E. Kearns, Vincenzo Berardi, N. Piplani, G. De Rosa, Masashi Yokoyama, J. L. Stone, David A. Wark, J. Y. Yang, M. Tsukada, Y. Takahira, Masaki Ishitsuka, M. Thiesse, K. Iwamoto, G.D. Barr, A. Konaka, S. J. Jenkins, M. R. Vagins, J. Walker, N. J. Griskevich, A. Ali, Yusuke Koshio, Y. Takemoto, A. Pritchard, W. Y. Ma, D. Barrow, L. F. Thompson, T. Ishizuka, Makoto Hasegawa, Y. Nagao, J. McElwee, A. Minamino, Tsuyoshi Nakaya, B. Jamieson, M. Shinoki, K. Frankiewicz, N. McCauley, S. B. Kim, I. T. Lim, S. Yamamoto, T. Matsubara, J. Y. Kim, A. Orii, S. El Hedri, J. Feng, L. Cook, Y. Takeuchi, T. Kajita, J. Bian, H. K. Tanaka, Seiko Hirota, T. Kikawa, M. Gonin, J. Xia, M. Friend, Masaaki Tanaka, N. W. Prouse, C. W. Walter, T. Sugimoto, Hiroyuki Sekiya, Y. Fukuda, L. Wan, R. Akutsu, Y. Hayato, T. Sekiguchi, Yasunari Suzuki, T. Shiozawa, C. Vilela, Ll. Marti, T. Yoshida, Song Chen, K. S. Ganezer, Yuto Ashida, T. Tsukamoto, T. Okada, T. Nakamura, N. Ogawa, T. Ishida, C. Yanagisawa, A. Goldsack, S. Nakayama, R. A. Wendell, A. Takenaka, K. Sato, A. K. Ichikawa, J. Kameda, Th. A. Mueller, Shintaro Ito, P. Mijakowski, Kalen Martens, Kate Scholberg, S. Mine, K. M. Tsui, Takehisa Hasegawa, M. Lamoureux, Hirokazu Ishino, Chris Simpson, G. Collazuol, F. Di Lodovico, M. Kuze, M. Inomoto, A. A. Sztuc, M. B. Smy, B. Zaldivar, Yuta Kato, L. N. Machado, and M. Harada

Subjects
Physics, 010308 nuclear & particles physics, Proton decay, Detector, 01 natural sciences, Lower limit, Nuclear physics, Volume (thermodynamics), 0103 physical sciences, Pi, Atmospheric neutrino, 010306 general physics, Fiducial marker, Super-Kamiokande
Abstract

We have searched for proton decay via p→e+π0 and p→μ+π0 modes with the enlarged fiducial volume data of Super-Kamiokande from April 1996 to May 2018, which corresponds to 450 kton·years exposure. We have accumulated about 25% more livetime and enlarged the fiducial volume of the Super-Kamiokande detector from 22.5 kton to 27.2 kton for this analysis, so that 144 kton·years of data, including 78 kton·years of additional fiducial volume data, has been newly analyzed. No candidates have been found for p→e+π0 and one candidate remains for p→μ+π0 in the conventional 22.5 kton fiducial volume and it is consistent with the atmospheric neutrino background prediction. We set lower limits on the partial lifetime for each of these modes: τ/B(p→e+π0)>2.4×1034 years and τ/B(p→μ+π0)>1.6×1034 years at 90% confidence level.

Published
2020

8. Improving Timeliness of Lung Cancer Diagnosis and Staging Investigations Through Implementation of Standardized Triage Pathways

Author

Nicole O’Callaghan, Christine Noseworthy, Monica Mullin, Breanne Golemiec, Geneviève C. Digby, Audrey Tran, Christopher M. Parker, and Christopher J L Stone

Subjects
Ontario, medicine.medical_specialty, Lung Neoplasms, Oncology (nursing), business.industry, Health Policy, MEDLINE, medicine.disease, Triage, 03 medical and health sciences, 0302 clinical medicine, Oncology, 030220 oncology & carcinogenesis, Positron-Emission Tomography, medicine, Humans, Quality in Action, 030212 general & internal medicine, Intensive care medicine, Lung cancer, business, Retrospective Studies
Abstract

PURPOSE: Timely care for patients with lung cancer (LC) is associated with improved clinical outcomes. In Southeastern Ontario, Canada, we identified delays in the diagnostic process for patients undergoing evaluation for suspected LC through a rapid assessment clinic. We developed improvement initiatives with an aim of reducing the time from referral to diagnosis. METHODS: A Standardized Triage Process (STP) was implemented for patients referred with suspected LC, including routine interdisciplinary triage, standardized pathways with preordered staging tests, and a new Small Nodule Clinic. We retrospectively analyzed all patients referred pre-STP (January to April 2018) and prospectively for improvement (May 2018 to March 2019). Process measures included STP compliance and time to completion of staging investigations (positron emission tomography [PET] and computed tomography/magnetic resonance imaging of brain). Data are reported as means; significance was determined by special-cause variation using Statistical Process Control charts; unpaired t tests were compared between groups. RESULTS: We reviewed 833 referrals (207 baseline and 626 post-STP). STP compliance improved monthly to 99.4%. Post-STP, time from referral to PET decreased (from 38.5 to 15.7 days), time from referral to brain imaging decreased (from 33.4 to 13.1 days), and time from referral to diagnosis decreased (from 38.0 to 22.7 days), all demonstrating special-cause variation. Patients completing preordered staging tests experienced significantly faster care than those without preordered tests, including time to PET (23.0 v 35.9 days), computed tomography/magnetic resonance imaging of brain (16.2 v 29.9 days), and diagnosis (39.9 v 28.1 days), all P < .001. CONCLUSION: An STP significantly improved timeliness of diagnosis and staging for patients with suspected LC undergoing evaluation in a rapid assessment clinic.

Published
2020

9. Patient and physician perceptions of lung cancer care in a multidisciplinary clinic model

Author

G. Linford, S. Wakeham, Geneviève C. Digby, Nancy Dalgarno, Rylan Egan, Danielle Robinson, Andrew Robinson, Christopher J. L. Stone, and Angela M Coderre-Ball

Subjects
Male, medicine.medical_specialty, Lung Neoplasms, Patients, MEDLINE, Exploratory research, Ambulatory Care Facilities, Nonprobability sampling, 03 medical and health sciences, 0302 clinical medicine, process improvement, Multidisciplinary approach, Physicians, Patient experience, patient experiences, Humans, Medicine, 030212 general & internal medicine, Lung cancer, Qualitative Research, Aged, Aged, 80 and over, business.industry, Quality of care, Middle Aged, multidisciplinary models, medicine.disease, Collegiality, lung cancer, 030220 oncology & carcinogenesis, Family medicine, Female, Perception, Original Article, business, Biomedical sciences
Abstract

Background: Lung cancer (lc) is a complex disease requiring coordination of multiple health care professionals. A recently implemented lc multidisciplinary clinic (mdc) at Kingston Health Sciences Centre, an academic tertiary care hospital, improved timeliness of oncology assessment and treatment. This study describes patient, caregiver, and physician experiences in the mdc. Methods: We qualitatively studied patient, caregiver, and physician experiences in a traditional siloed care model and in the mdc model. We used purposive sampling to conduct semi-structured interviews with patients and caregivers who received care in one of the models and with physicians who worked in both models. Thematic design by open coding in the ATLAS.ti software application (ATLAS.ti Scientific Software Development, Berlin, Germany) was used to analyze the data. Results: Participation by 6 of 72 identified patients from the traditional model and 6 of 40 identified patients from the mdc model was obtained. Of 9 physicians who provided care in both models, 8 were interviewed (2 respirologists, 2 medical oncologists, 4 radiation oncologists). Four themes emerged: communication and collaboration, efficiency, quality of care, and effect on patient outcomes. Patients in both models had positive impressions of their care. Patients in the mdc frequently reported convenience and a positive effect of family presence at appointments. Physicians reported that the mdc improved communication and collegiality, clinic efficiency, patient outcomes and satisfaction, and consistency of information provided to patients. Physicians identified lack of clinic space as an area for mdc improvement. Conclusions: This qualitative study found that a lc mdc facilitated patient communication and physician collaboration, improved quality of care, and had a perceived positive effect on patient outcomes.

Published
2020
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10. 26 Improving timeliness of specialist referral and diagnosis for patients with suspected lung cancer through standardization

Author

Audrey Tran, Breanne Golemiec, Geneviève C. Digby, Christopher M. Parker, Thomas Howard, Gurmohan Rob Dhillon, Monica Mullin, Christine Noseworthy, and Christopher J L Stone

Subjects
medicine.medical_specialty, Specialist referral, Referral, business.industry, medicine.disease, Triage, Chart review, Clinic referral, Emergency medicine, Medicine, Mri brain, Suspected lung cancer, business, Lung cancer
Abstract

Background Delays in lung cancer (LC) diagnosis are associated with worse clinical outcomes. Our rapid assessment LC clinic identified referral delays following thoracic imaging suspicious for LC and delays associated with unstructured triage. Objectives Decrease time from suspicious CT chest to LC clinic referral and decrease time from referral to diagnosis and staging. Methods Retrospective baseline chart review (Jan–Apr 2018) and prospective monitoring (May 2018–May 2019). PDSA cycles: 1) Standardized Triage Pathways (nurse-physician triage to diagnostic pathways, pre-ordered staging tests, small nodule clinic); 2) local standardization and regional implementation of CT reporting recommending LC clinic referral (March 2019). Data include dates of: imaging suspicious for LC, CT chest, specialist referral and assessment, staging tests, radiologist recommendations and diagnosis. Data are reported as mean days; statistical process control XbarS charts and unpaired t-tests were used to assess for significance. Results Following PDSA 1, there were reductions in mean time from referral to PET (40.5 to 27.3 days), to CT/MRI Brain (35.8 to 18.8 days), and to diagnosis (41.4 to 30.1 days), all significant by special cause variation. Following PDSA 2, the percentage of LC clinic patients with a CT chest recommending clinic referral increased (25.2% to 37.0%, p=0.041), with increased recommendations from regional hospitals (4.2% to 16.5%, p=0.022). When a radiologist recommended LC clinic referral, time to referral and assessment were faster (7.3 vs. 15.5 days, p=0.0001; 20.3 vs. 26.2 days, p=0.001, respectively). Conclusions Standardization of radiologist reporting and LC clinic triage led to significant improvement in timeliness of specialist access, diagnosis and staging investigations.

Published
2019

11. Measurement of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos at Super-Kamiokande

Author

E. Kearns, Masashi Yokoyama, T. Sugimoto, T. Towstego, T. Ishizuka, Y. Hayato, Tsuyoshi Nakaya, R. Akutsu, L. H. V. Anthony, C. W. Walter, F. Di Lodovico, C. Kachulis, T. Hayashino, C. K. Jung, Y. Kuno, K. Nishijima, A. Konaka, A. Minamino, N. McCauley, C. M. Nantais, Masato Shiozawa, Y. Choi, L. Ludovici, N. J. Griskevich, M. Vagins, M. Kuze, J. L. Raaf, Yusuke Koshio, Atsushi Takeda, T. Sekiguchi, P. de Perio, B. Bodur, V. Takhistov, Hiroyuki Sekiya, S. Molina Sedgwick, Soo-Bong Kim, Y. Fukuda, L. Wan, N. F. Calabria, Ke. Nakamura, Hirokazu Ishino, Y. Isobe, Y. Takeuchi, Lester D.R. Thompson, K. Martens, Y. Nishimura, A. T. Suzuki, K. Okamoto, Hiromasa Tanaka, M. Murdoch, J. Bian, C. Vilela, T. Tsukamoto, T. Okada, C. Xu, A. Pritchard, Makoto Hasegawa, W. R. Kropp, K. Sakashita, J. F. Martin, Takaaki Kajita, Yuichi Oyama, T. Nakadaira, M. Friend, M. Thiesse, G. De Rosa, C. Simpson, J. Imber, K. M. Tsui, Ahmed Ali, M. B. Smy, R. P. Litchfield, Seiko Hirota, Xiao-yan Li, G. Collazuol, Yuta Kato, T. Ishida, Rongkun Wang, T. Kikawa, M. Gonin, J. Xia, H. K. Tanaka, M. G. Catanesi, M. Ikeda, Makoto Sakuda, M. Miura, K. Frankiewicz, Yutaka Nakajima, Ll. Marti, K. Abe, J. L. Stone, Y. Okajima, K. Iyogi, J. Y. Kim, S. Mine, A. Orii, S. Cao, L. Labarga, Yoshihiro Suzuki, R. A. Wendell, M. J. Wilking, S. Berkman, J. L. Palomino, M. Hartz, K. Choi, Pablo Fernandez, C. Bronner, Shintaro Ito, R. A. Intonti, J. G. Learned, I. T. Lim, H. Miyabe, Kate Scholberg, H. Okazawa, S. Locke, S. Matsuno, B. Quilain, A. Takenaka, F. d. M. Blaszczyk, P. Weatherly, B. Richards, M. Koshiba, R. G. Park, Ko Okumura, Ke. Abe, K. Hagiwara, Yuuki Nakano, T. Mochizuki, Sara Sussman, J. Kameda, Th. A. Mueller, P. Mijakowski, Felix Iacob, J. S. Jang, Masaki Ishitsuka, M. O. Wascko, A. Goldsack, S. Nakayama, T. Yoshida, Song Chen, R. Tacik, D. Fukuda, K. S. Ganezer, E. Radicioni, John Hill, D. L. Wark, Y. Takahira, T. Yano, M. Mori, Y. Sonoda, Yoshitaka Itow, G. Pronost, T. Nakamura, M. Murrase, C. Yanagisawa, H. W. Sobel, Y. Ashida, K. Nakamura, S. Moriyama, G. Santucci, Masayuki Nakahata, Y. Uchida, T. Hasegawa, M. Jiang, Yasuhiro Kishimoto, Takashi Kobayashi, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Super-Kamiokande, Science and Technology Facilities Council (STFC), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), DE ROSA, Gianfranca, and Et, Al

Subjects
Physics::Instrumentation and Detectors, neutrino oxygen neutral current interaction, Flux, KAMIOKANDE, 7. Clean energy, 01 natural sciences, neutrino: flux, High Energy Physics - Experiment, Physics, Particles & Fields, High Energy Physics - Experiment (hep-ex), neutrino: atmosphere, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Particle Physics Experiments, neutrino: supernova, Nuclear Experiment, Physics, neutrino nucleon: inelastic scattering, atmospheric neutrinos, Supernova, Physical Sciences, quasi-elastic cross section, Neutrino, Nucleon, channel cross section: measured, neutrino oxygen neutral current interaction, quasi-elastic cross section, atmospheric neutrinos, SuperKamiokande experiment, neutral current, Cherenkov counter: water, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy & Astrophysics, EVENTS, Nuclear physics, 5/3, neutrino: spectrum, SEARCH, 0103 physical sciences, 010306 general physics, Cherenkov radiation, Science & Technology, Neutral current, background, 010308 nuclear & particles physics, Scattering, scattering, neutrino nucleus: interaction, MU, 13. Climate action, High Energy Physics::Experiment, Super-Kamiokande, oxygen, SuperKamiokande experiment, experimental results
Abstract

Neutral current (NC) interactions of atmospheric neutrinos on oxygen form one of the major backgrounds in the search for supernova relic neutrinos with water-based Cherenkov detectors. The NC channel is dominated by neutrino quasi-elastic (NCQE) scattering off nucleons inside $^{16}$O nuclei. In this paper we report the first measurement of NCQE cross section using atmospheric neutrinos at Super-Kamiokande (SK). The measurement used 2,778 live days of SK-IV data with a fiducial volume of 22.5 kiloton water. Within the visible energy window of 7.5-29.5 MeV, we observed $117$ events compared to the expected $71.9$ NCQE signal and $53.1$ background events. Weighted by the atmospheric neutrino spectrum from 160 MeV to 10 GeV, the flux averaged NCQE cross section is measured to be $(1.01\pm0.17(\text{stat.})^{+0.78}_{-0.30}(\text{sys.}))\times10^{-38}$ cm$^2$., Comment: 11 pages, 9 figures, submitted to PRD

Published
2019

12. Improving Timeliness of Oncology Assessment and Cancer Treatment Through Implementation of a Multidisciplinary Lung Cancer Clinic

Author

Anna Tomiak, Wiley Chung, Christopher J L Stone, Allison Ashworth, Aamer Mahmud, Ken R. Reid, Timothy Owen, Andrew Robinson, Mihaela Mates, Conrad Falkson, Sou Kishore Thain, Richard Gregg, Geneviève C. Digby, Christopher M. Parker, and Erin Brown

Subjects
medicine.medical_specialty, Quality management, Lung Neoplasms, Time Factors, Quality Assurance, Health Care, MEDLINE, Medical Oncology, Time-to-Treatment, 03 medical and health sciences, 0302 clinical medicine, Patient satisfaction, Multidisciplinary approach, Health care, medicine, Humans, 030212 general & internal medicine, Intensive care medicine, Lung cancer, Patient Care Team, Oncology (nursing), business.industry, Health Policy, medicine.disease, Quality Improvement, Cancer treatment, Outcome and Process Assessment, Health Care, Oncology, 030220 oncology & carcinogenesis, business, Quality assurance, Delivery of Health Care
Abstract

PURPOSE: Timely lung cancer care has been associated with improved clinical outcomes and patient satisfaction. We identified improvement opportunities in lung cancer management pathways at Kingston Health Sciences Centre. Quality improvement strategies led to the implementation of a multidisciplinary lung cancer clinic (MDC). METHODS: We set an outcome measure of decreasing the time from diagnosis to first cancer treatment by 10 days within 6 months of clinic implementation. We implemented a weekly MDC that involved respirologists, medical oncologists, and radiation oncologists at which patients with new lung cancer diagnoses were offered concurrent oncology consultation. We used Plan-Do-Study-Act cycles to guide our improvement initiatives. A total of five Plan-Do-Study-Act cycles spanned 14 months and consisted of an MDC pilot clinic, large-scale MDC launching, debriefing meetings, and clinic expansion. Pre-MDC data were analyzed retrospectively to establish baseline and prospectively for improvement. Statistical Process Control XmR(i) charts were used to report data. RESULTS: Since MDC initiation, 128 patients have been seen in 34 MDC clinics (3.8 patients per clinic). Mean days from diagnosis to first oncology assessment decreased from 12.4 days to 3.9 days, and mean days from diagnosis to first cancer treatment decreased from 39.5 to 15.0 days, both of which demonstrated special cause variation. Time to assessment and treatment improved for patients with every stage of lung cancer and for both small-cell and non–small-cell subtypes. CONCLUSION: MDC shortens the time from lung cancer diagnosis to oncology assessment and treatment. Time to treatment improved more than time to oncology assessment, which suggests the improvement is related to benefits beyond faster oncology assessment.

Published
2019

13. PATIENT AND HEALTH SYSTEM COST SAVINGS IN A MULTIDISCIPLINARY LUNG CANCER CLINIC

Author

Ana P. Johnson, Christopher J L Stone, Christopher M. Parker, Andriy Katyukha, Andrew Robinson, and Geneviève C. Digby

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, Multidisciplinary approach, business.industry, medicine, Cardiology and Cardiovascular Medicine, Critical Care and Intensive Care Medicine, Intensive care medicine, Lung cancer, medicine.disease, business, Cost savings
Published
2020

14. Real-time supernova neutrino burst monitor at Super-Kamiokande

Author

A. T. Suzuki, J. F. Martin, T. Nakadaira, G. Carminati, Makoto Sakuda, K. Iyogi, J. L. Raaf, K. Sakashita, K. Kaneyuki, Takaaki Kajita, T. Sekiguchi, E. Kearns, R. A. Wendell, Masashi Yokoyama, Yasunari Suzuki, Y. Hayato, M. Ikeda, John Hill, S. B. Kim, J. Y. Kim, M. Goldhaber, S. N. Smith, Seiko Hirota, T. Kikawa, C. Yanagisawa, Yejin Zhang, T. Ishizuka, L. Marti, K. Tateishi, Tsuyoshi Nakaya, J. S. Jang, A. Himmel, Song Chen, K. Nishijima, W. R. Kropp, S. Tobayama, Takaaki Mori, Kate Scholberg, W. E. Keig, V. Takhistov, Atsushi Takeda, Shigeki Tasaka, E. Richard, J. L. Stone, L. R. Sulak, K. Ieki, Yusuke Suda, Hirokazu Ishino, K. S. Ganezer, R. J. Wilkes, S. Moriyama, R. Tacik, Masayuki Nakahata, I. Kametani, M. Miura, L. Labarga, T. Kobayashi, K. P. Lee, C. K. Jung, Yoshitaka Itow, J. Imber, Masato Shiozawa, Y. Choi, Koh Ueno, H.A. Tanaka, M. J. Wilking, Yasuhiro Kishimoto, A. Konaka, M. B. Smy, Kimihiro Okumura, T. Tomura, H. Okazawa, Y. Kuno, S. Nakayama, T. Yokozawa, T. Tsukamoto, C. Bronner, T. Akiri, B. L. Hartfiel, S. Mine, S. Berkman, J. G. Learned, J. Gustafson, S. Matsuno, T. McLachlan, Takehisa Hasegawa, J. Kameda, P. Fernandez, K. Connolly, P. Mijakowski, K. Choi, K. Huang, Kazuhiro Suzuki, A. Kibayashi, Y. Koshio, T. Ishida, M. Koshiba, H. K. Tanaka, M. R. Vagins, A. Murakami, A. Minamino, G. Mitsuka, I. T. Lim, P. de Perio, T. Yano, A. L. Renshaw, Kenzo Nakamura, Yuichi Oyama, R. Yamaguchi, K. Abe, Y. Totsuka, Susumu Takahashi, T. Wongjirad, Y. Takeuchi, T. Ishii, K. Martens, Y. Nishimura, C. W. Walter, N. Hong, Joshua Hignight, Hiroyuki Sekiya, Y. Fukuda, Yuuki Nakano, T. J. Irvine, Y. Haga, P. Weatherly, and H. W. Sobel

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, FOS: Physical sciences, Astronomy, Astronomy and Astrophysics, Astrophysics, Solar neutrino problem, 01 natural sciences, Cosmic neutrino background, Astrophysics - Solar and Stellar Astrophysics, Neutrino detector, 0103 physical sciences, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino astronomy, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Super-Kamiokande, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR)
Abstract

We present a real-time supernova neutrino burst monitor at Super-Kamiokande (SK). Detecting supernova explosions by neutrinos in real time is crucial for giving a clear picture of the explosion mechanism. Since the neutrinos are expected to come earlier than light, a fast broadcasting of the detection may give astronomers a chance to make electromagnetic radiation observations of the explosions right at the onset. The role of the monitor includes a fast announcement of the neutrino burst detection to the world and a determination of the supernova direction. We present the online neutrino burst detection system and studies of the direction determination accuracy based on simulations at SK., 15 pages, 8 figures, accepted for publication in Astroparticle Physics

Published
2016

15. 916 Evaluation of a multidisciplinary cancer clinic: improving time to oncology assessment and treatment for patients with new lung cancer

Author

Aamer Mahmud, Christopher J L Stone, Erin Brown, Geneviève C. Digby, Christopher M. Parker, Andrew Robinson, Timothy Owen, Mihaela Mates, Allison Ashworth, and Conrad Falkson

Subjects
Oncology, medicine.medical_specialty, business.industry, Internal medicine, medicine, Time to treatment, Cancer, Medical diagnosis, Stage (cooking), Quality of care, business, medicine.disease, Lung cancer
Abstract

Background Delays in the management of lung cancer (LC) are associated with inferior outcomes. Multidisciplinary cancer clinics (MDCC) can improve timeliness and quality of care. Objectives Decrease time from LC diagnosis to oncology assessment from 13 to 3 days, and to treatment from 30 to Methods We implemented a weekly MDCC, involving Respirologists, Medical Oncologists (MO) and Radiation Oncologists (RO), where patients with new LC diagnoses received concurrent oncology consultation. We retrospectively analysed data pre-MDCC (November 2016 – February 2017) and prospectively for improvements (February – July 2017). Improvement cycles included MDCC clinic launching and a debriefing/troubleshooting meeting. Data are reported as n(%), and means as per Statistical Process Control XmR(i) charts. Results 117 patients (44 pre-MDCC, 73 post-MDCC) were analysed. Most patients had stage 4 (44, 37.6%) or stage 1 LC (32, 27%). All patients saw Respirology, in addition to MO (85, 72.6%), RO (113, 96.6%), or both (83, 71.0%). The proportion of treated patients was unchanged pre- vs. post-MDCC (88.6%, 85.4%). Mean days from diagnosis to oncology assessment decreased from 14.3 to 5.0 days. Time from diagnosis to first treatment decreased from 39.8 to 27.2 days after the first improvement cycle, and to 18.1 days after the second improvement cycle (Figure 1), with less variation in time to treatment after improvement events. Conclusions MDCC shortens time from LC diagnosis to oncology assessment and treatment. Time to treatment improved more than time to oncology assessment, suggesting the improvement is likely related to benefits beyond just faster oncology assessment.

Published
2017

16. Multidisciplinary Clinics in Lung Cancer Care: A Systematic Review

Author

Geneviève C. Digby, Rajajee Selvam, Haris M. Vaid, Christopher J L Stone, Andrew Robinson, and Allison Ashworth

Subjects
Pulmonary and Respiratory Medicine, Cancer Research, medicine.medical_specialty, Quality management, Lung Neoplasms, MEDLINE, Hospital Departments, Medical Oncology, 03 medical and health sciences, 0302 clinical medicine, Patient satisfaction, Multidisciplinary approach, Medicine, Humans, 030212 general & internal medicine, Intensive care medicine, Lung cancer, Medical model, business.industry, Delivery of Health Care, Integrated, Cancer, medicine.disease, Quality Improvement, Oncology, Sample size determination, Patient Satisfaction, 030220 oncology & carcinogenesis, business
Abstract

Multidisciplinary cancer clinics (MDCCs) are recognized in cancer care as an alternate model of care for lung cancer patients. However, the precise MDCC characteristics that could potentially improve the quality of care in lung cancer care have not been clearly defined. We performed a systematic review of the data regarding MDCCs in the treatment of patients with lung cancer to summarize and evaluate the available evidence and to determine valuable clinic characteristics and projected outcomes. We searched Embase, Cochrane, Medline, PubMed, and Web of Science through April 2017 for studies that included ≥ 2 physician specialties in a MDCC for lung cancer. A total of 2374 unique articles were identified, of which 13 met the inclusion criteria. All the studies were either retrospective or qualitative, with many having small sample sizes. The most commonly reported quantitative outcome for MDCCs was a decreased time from diagnosis to treatment; however, this was only statistically significant in 2 studies. Evidence was conflicting regarding improved patient survival. Several studies of MDCCs reported improved qualitative outcomes, including increased patient satisfaction, increased collaboration, and cohesive communication among care providers, although the sample sizes were small. The few studies of MDCCs that included a care coordinator, in addition to physicians from multiple specialties, reported improvements in patient satisfaction. Overall, our review of the reported data revealed a paucity of evidence regarding the value of MDCCs for lung cancer patients, highlighting the need for further studies to understand the optimal medical model to deliver care.

Published
2017

17. Supernova Relic Neutrino search with neutron tagging at Super-Kamiokande-IV

Author

Y. Takeuchi, T.S. Tanaka, K. Nishikawa, C. Yanagisawa, A. T. Suzuki, K. Nishijima, L. R. Sulak, Hirokazu Ishino, Takaaki Kajita, J. F. Martin, Yuichi Oyama, R. A. Wendell, T. Nakadaira, P. dePerio, M. B. Smy, H. W. Sobel, Koh Ueno, Atsushi Takeda, A. Konaka, Yusuke Koshio, Makoto Sakuda, Y. Nishimura, Takaaki Mori, Shigeki Tasaka, J. L. Stone, Y. Hayato, S. Nakayama, J. L. Raaf, R. Tacik, R. Yamaguchi, K. Nakamura, I. Taylor, C. K. Jung, G. Carminati, K. Abe, A. Minamino, T. Tomura, A. Murakami, C. W. Walter, T. Yokozawa, H. Okazawa, K. Iyogi, John Hill, S. Moriyama, M. Ikeda, T. Yano, Masato Shiozawa, Y. Choi, Masayuki Nakahata, G. Mitsuka, A. L. Renshaw, T. Tsukamoto, K. Sakashita, K. P. Lee, Joshua Hignight, I. T. Lim, L. Labarga, T. Kobayashi, Hiroyuki Sekiya, K. Choi, Y. Totsuka, Susumu Takahashi, M. J. Wilking, Kimihiro Okumura, Y. Fukuda, K. Kaneyuki, T. Wongjirad, M. Koshiba, T. Ishida, M. Vagins, M. Goldhaber, T. Sekiguchi, W. E. Keig, S. Matsuno, Yejin Zhang, K. Bays, H. Kaji, H. Sui, Song Chen, J. Kameda, Yuuki Nakano, S. N. Smith, Yoshitaka Itow, Yasunari Suzuki, Y. Kuno, P. Mijakowski, H. Kikawa, J. G. Learned, W. R. Kropp, S. Tobayama, Zishuo Yang, Kate Scholberg, M. Dziomba, Kazuhiro Suzuki, H. Zhang, T. McLachlan, Ll. Marti, E. Kearns, S. Barkman, K. Martens, S. Mine, K. S. Ganezer, Masashi Yokoyama, S. B. Kim, J. Y. Kim, K. Huang, A. Kibayashi, K. Ieki, R. J. Wilkes, T. Ishii, T. Ishizuka, Tsuyoshi Nakaya, T. Akiri, T. Hasegawa, Yasuhiro Kishimoto, Y. Takenaga, M. Miura, J. S. Jang, K. Connolly, and J. Imber

Subjects
Physics, Particle physics, Physics - Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astronomy and Astrophysics, Photon energy, High Energy Physics - Experiment, Nuclear physics, Supernova, Neutron capture, Neutron, High Energy Physics::Experiment, Experimental methods, Neutrino, Super-Kamiokande, Nuclear Experiment, Charged current
Abstract

A search for Supernova Relic Neutrinos $\bar{\nu}_e$'s is first conducted via inverse-beta-decay by tagging neutron capture on hydrogen at Super-Kamiokande-IV. The neutron tagging efficiency is determined to be $(17.74\pm0.04_{stat.}\pm1.05_{sys.})%$, while the corresponding accidental background probability is $(1.06\pm0.01_{stat.}\pm 0.18_{sys.})$%. Using 960 days of data, we obtain 13 inverse-beta-decay candidates in the range of $E_{\bar{\nu}_e}$ between 13.3 MeV and 31.3 MeV. All of the observed candidates are attributed to background. Upper limits at 90% C.L. are calculated in the absence of a signal., Comment: 6 pages, 4 figures

Published
2015
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18. Search for nucleon decay into charged antilepton plus meson in 0.316 megaton·years exposure of the Super-Kamiokande water Cherenkov detector

Author

A. T. Suzuki, Atsushi Takeda, J. F. Martin, N. D. Patel, Yusuke Suda, C. Vilela, T. Nakadaira, C. Xu, Makoto Sakuda, K. Ito, H. W. Sobel, Y. Takeuchi, T. Kajita, B. Quilain, M. B. Smy, Y. Sonoda, M. Elnimr, K. Sakashita, A. Konaka, Francesco Muto, Xiao-yan Li, T. Hasegawa, A. Cole, J. L. Stone, Y. Okajima, Yusuke Koshio, Ll. Marti, H. K. Tanaka, Kimihiro Okumura, M. Goldhaber, A. Pritchard, Yoshitaka Itow, J. L. Raaf, M. Miura, J. L. Palomino, R. A. Wendell, K. Choi, Pablo Fernandez, L. R. Sulak, C. Kachulis, J. Amey, T. Hayashino, H.A. Tanaka, G. Pronost, M. Friend, S. Cao, N. McCauley, C. M. Nantais, K. Huang, Z. Li, Song Chen, Makoto Hasegawa, C. W. Walter, Shintaro Ito, A. Kibayashi, C Shimpson, C. Bronner, Shigeki Tasaka, Lester D.R. Thompson, S. Tobayama, J. G. Learned, D. L. Wark, Takahiro Hiraki, M. Koshiba, S. N. Smith, Y. M. Zhang, J. S. Jang, R. G. Park, T. Tomura, K. S. Ganezer, S. Nakayama, Hiroyuki Sekiya, H. Nagata, A. Takenaka, F. d. M. Blaszczyk, H. Okazawa, M. J. Wilking, Soo-Bong Kim, Y. Fukuda, I. T. Lim, Takhistov, Yuichi Oyama, L. Wan, L. Labarga, M. Jiang, T. Nakamura, R. P. Litchfield, Ke. Abe, Takashi Kobayashi, T. Tsukamoto, C. Yanagisawa, S. Berkman, P. Weatherly, J. Kameda, A. Minamino, K. Abe, Yuji Kishimoto, S. Matsuno, Lhv Anthony, T. Ishida, P. Mijakowski, Kalen Martens, T. Yano, B. Richards, R. Akutsu, Ke. Nakamura, M. O. Wascko, R. Tacik, D. Fukuda, K. Kaneyuki, Yuuki Nakano, Y. Nishimura, Yoshihiro Suzuki, Y. Totsuka, Jy Kim, A. Himmel, R. G. Calland, K. Nishijima, T. Sekiguchi, Erin O'Sullivan, F. Di Lodovico, Y. Kuno, Yuta Kato, C. K. Jung, T. Ishii, M. Ikeda, Masato Shiozawa, Y. Choi, Y. Hayato, S. Locke, J. C. Hill, E. Kearns, Seiko Hirota, Masashi Yokoyama, T. Ishizuka, Tsuyoshi Nakaya, M. Hartz, K. Iyogi, W. Y. Ma, R. J. Wilkes, Hirokazu Ishino, Vagins, S. Mine, K. M. Tsui, J. Gustafson, Kate Scholberg, W. R. Kropp, K. Nakamura, K. Frankiewicz, A. Orii, S. Moriyama, G. Santucci, Masayuki Nakahata, Y. Uchida, and M. Murase

Subjects
Physics, Particle physics, Proton, Meson, 010308 nuclear & particles physics, Cherenkov detector, Nuclear Theory, 01 natural sciences, law.invention, Nuclear physics, Pion, law, 0103 physical sciences, High Energy Physics::Experiment, Neutron, Nuclear Experiment, 010306 general physics, Nucleon, Super-Kamiokande, Lepton
Abstract

We have searched for proton decays into a charged antilepton (e+, μ+) plus a meson (η, ρ0, ω) and for neutron decays into a charged antilepton (e+, μ+) plus a meson (π−, ρ−) using Super-Kamiokande I-IV data, corresponding to 0.316 megaton⋅years of exposure. This measurement updates the previous published result by using 2.26 times more data and improved analysis methods. No significant evidence for nucleon decay is observed and lower limits on the partial lifetime of the nucleon are obtained. The limits range from 3×1031 to 1×1034 years at 90% confidence level, depending on the decay mode.

Published
2017

19. Search for proton decay via p→e+π0 and p→μ+π0 in 0.31 megaton·years exposure of the Super-Kamiokande water Cherenkov detector

Author

M. J. Wilking, H. W. Sobel, Y. Takeuchi, Y. Totsuka, T. Wongjirad, T. Kajita, Tomohiko Nakajima, Yuichi Oyama, Seiko Hirota, T. Kikawa, T. Ishii, A. T. Suzuki, J. C. Hill, J. F. Martin, T. Nakadaira, M. Friend, Makoto Sakuda, Y. Nishimura, N. Hong, C. W. Walter, Joshua Hignight, Kate Scholberg, T. Sekiguchi, Erin O'Sullivan, S. N. Smith, W. R. Kropp, S. Tobayama, C. Kachulis, Atsushi Takeda, T. Tsukamoto, Shigeki Tasaka, J. Kameda, Yasunari Suzuki, J. S. Jang, J. L. Palomino, M. Koshiba, Hiroyuki Sekiya, P. Mijakowski, Kalen Martens, Y. Fukuda, Hiromasa Tanaka, R. G. Park, M. R. Vagins, Ko Okumura, K. Iyogi, Y. M. Zhang, T. Yano, V. Takhistov, S. Mine, T. J. Irvine, T. Ishida, Kazuhiro Suzuki, J. Gustafson, Takaaki Mori, Ke. Abe, P. Weatherly, Song Chen, J. L. Stone, Takehisa Hasegawa, S. Berkman, J. L. Raaf, Z. Li, K. Sakashita, A. Minamino, Y. Hayato, T. Suzuki, S. Nakayama, R. A. Wendell, Hirokazu Ishino, Yuji Kishimoto, I. T. Lim, K. Choi, K. Nakamura, Pablo Fernandez, Y. Kuno, M. Goldhaber, C. M. Nantais, R. Tacik, D. Fukuda, K. Kaneyuki, S. Moriyama, Yoshitaka Itow, T. Tomura, M. Miura, K. Huang, A. Kibayashi, Masayuki Nakahata, L. Labarga, H. Okazawa, H.A. Tanaka, T. Kobayashi, K. S. Ganezer, S. Cao, C. Bronner, J. G. Learned, S. Matsuno, C. Yanagisawa, E. Richard, Y. Haga, Yuuki Nakano, M. Hartz, R. J. Wilkes, K. Nishijima, Brandon L. Hartfiel, K. Frankiewicz, S. B. Kim, J. Y. Kim, A. Orii, C. Xu, A. Himmel, E. Kearns, A. Konaka, Masashi Yokoyama, Yusuke Koshio, T. Ishizuka, Tsuyoshi Nakaya, C. K. Jung, M. Ikeda, Masato Shiozawa, Y. Choi, Takahiro Hiraki, T. Kayano, Yusuke Suda, J. Imber, L. R. Sulak, Xiao-yan Li, Ll. Marti, M. B. Smy, and R. Akutsu

Subjects
Physics, Particle physics, Proton, 010308 nuclear & particles physics, Cherenkov detector, Proton decay, Hydrogen atom, Expected value, 7. Clean energy, 01 natural sciences, law.invention, Nuclear physics, 13. Climate action, law, 0103 physical sciences, Neutron, Neutrino, 010306 general physics, Super-Kamiokande
Abstract

We have searched for proton decay via p→e+π0 and p→μ+π0 using Super-Kamiokande data from April 1996 to March 2015, 0.306 megaton·years exposure in total. The atmospheric neutrino background rate in Super-Kamiokande IV is reduced to almost half that of phase I-III by tagging neutrons associated with neutrino interactions. The reach of the proton lifetime is further enhanced by introducing new signal criteria that select the decay of a proton in a hydrogen atom. No candidates were seen in the p→e+π0 search. Two candidates that passed all of the selection criteria for p→μ+π0 have been observed, but these are consistent with the expected number of background events of 0.87. Lower limits on the proton lifetime are set at τ/B(p→e+π0)>1.6×1034 years and τ/B(p→μ+π0)>7.7×1033 years at 90% confidence level.

Published
2017

20. Search for Boosted Dark Matter Interacting With Electrons in Super-Kamiokande

Author

L. H. V. Anthony, Makoto Hasegawa, C. Xu, Takahiro Hiraki, Takaaki Kajita, S. Berkman, Y. Nishimura, K. Iyogi, W. Y. Ma, Y. Takeuchi, J. S. Jang, R. A. Wendell, Y. Sonoda, Seiko Hirota, Masahiro Kuze, A. Himmel, R. G. Calland, S. N. Smith, Yuichi Oyama, Atsushi Takeda, Song Chen, K. E. Nakamura, A. T. Suzuki, K. S. Ganezer, L. Labarga, R. P. Litchfield, V. Takhistov, Yoshihiro Suzuki, T. Kobayashi, M. R. Vagins, M. Ikeda, J. F. Martin, T. Nakadaira, Yoshitaka Itow, K. Nakamura, T. Ishii, M. Friend, C. Simpson, C. Bronner, Makoto Sakuda, K. Ito, J. L. Stone, G. Pronost, Shigeki Tasaka, W. R. Kropp, C. W. Walter, A. Pritchard, Y. Totsuka, C. Yanagisawa, K. Abe, S. Moriyama, Yusuke Suda, C. Vilela, C. Kachulis, T. Tsukamoto, E. Kearns, S. V. Cao, G. Santucci, Takashi Yoshida, Masayuki Nakahata, A. Cole, T. Nakamura, M. Elnimr, Y. Hayato, Francesco Muto, Y. Uchida, K. Sakashita, Masashi Yokoyama, M. Miura, J. L. Palomino, K. Nishijima, K. Frankiewicz, Hiroyuki Sekiya, T. Tomura, S. Locke, Soo-Bong Kim, M. B. Smy, N. D. Patel, Y. Fukuda, Yoshitaka Kuno, L. Wan, T. Ishizuka, H. Okazawa, Xiao-yan Li, J. Y. Kim, K. Kaneyuki, M. Goldhaber, Tsuyoshi Nakaya, J. Kameda, Ll. Marti, A. Orii, M. Koshiba, C. K. Jung, M. Hartz, J. Amey, H. A. Tanaka, M. Jiang, T. Sekiguchi, Erin O'Sullivan, S. Matsuno, M. Murase, Masato Shiozawa, Y. Choi, K. Choi, R. G. Park, John Hill, Yasuhiro Kishimoto, P. Mijakowski, M. J. Wilking, D. L. Wark, I. T. Lim, H. W. Sobel, R. J. Wilkes, D. Hamabe, T. Hayashino, A. Konaka, T. Hasegawa, Yusuke Koshio, Z. Li, R. Akutsu, Masaki Ishitsuka, B. Quilain, T. Ishida, Ke. Abe, M. O. Wascko, Y. Okajima, H. Nagata, Pablo Fernandez, J. G. Learned, A. Minamino, H. K. Tanaka, T. Yano, Kimihiro Okumura, N. McCauley, C. M. Nantais, J. L. Raaf, K. Martens, K. Huang, A. Kibayashi, S. Mine, K. M. Tsui, J. Gustafson, Lester D.R. Thompson, Shintaro Ito, Yuuki Nakano, F. d. M. Blaszczyk, P. Weatherly, B. Richards, S. Tobayama, Y. M. Zhang, S. Nakayama, A. Takenaka, Hirokazu Ishino, Kate Scholberg, R. Tacik, D. Fukuda, F. Di Lodovico, L. R. Sulak, Yuta Kato, and Science and Technology Facilities Council (STFC)

Subjects
General Physics, Cold dark matter, Dark matter, Physics, Multidisciplinary, General Physics and Astronomy, FOS: Physical sciences, Astrophysics, Electron, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, 010306 general physics, Super-Kamiokande Collaboration, Physics, Annihilation, Science & Technology, 02 Physical Sciences, 010308 nuclear & particles physics, hep-ex, Galactic Center, CONSTRAINTS, hep-ph, Galaxy, GALAXIES, High Energy Physics - Phenomenology, Neutrino detector, 13. Climate action, Physical Sciences, High Energy Physics::Experiment, Super-Kamiokande
Abstract

A search for boosted dark matter using 161.9 kt yr of Super-Kamiokande IV data is presented. We search for an excess of elastically scattered electrons above the atmospheric neutrino background, with a visible energy between 100 MeV and 1 TeV, pointing back to the Galactic center or the Sun. No such excess is observed. Limits on boosted dark matter event rates in multiple angular cones around the Galactic center and Sun are calculated. Limits are also calculated for a baseline model of boosted dark matter produced from cold dark matter annihilation or decay. This is the first experimental search for boosted dark matter from the Galactic center or the Sun interacting in a terrestrial detector.

Published
2017
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21. Measurement of the tau neutrino cross section in atmospheric neutrino oscillations with Super-Kamiokande

Author

K. Iyogi, W. Y. Ma, K. S. Ganezer, Yuuki Nakano, R. A. Wendell, A. T. Suzuki, J. F. Martin, Takahiro Hiraki, T. Hasegawa, Z. Li, T. Nakadaira, C. Simpson, T. Nakamura, Makoto Sakuda, K. Ito, C. Yanagisawa, J. Amey, L. H. V. Anthony, C. Kachulis, J. Kameda, N. McCauley, C. M. Nantais, Atsushi Takeda, Kimihiro Okumura, J. L. Palomino, P. Mijakowski, K. Huang, B. Quilain, R. Tacik, D. Fukuda, A. Kibayashi, S. Cao, C. Xu, K. Nishijima, Susana Molina Sedgwick, M. O. Wascko, J. L. Raaf, C. Bronner, Lester D.R. Thompson, Y. Hayato, Takaaki Kajita, T. Towstego, M. R. Vagins, T. Tsukamoto, T. Ishii, Yusuke Suda, Masaki Ishitsuka, J. G. Learned, S. Moriyama, C. Vilela, A. Minamino, K. Sakashita, S. Locke, T. Yoshida, G. Santucci, M. Ikeda, Masayuki Nakahata, Y. Uchida, F. d. M. Blaszczyk, T. Yano, C. W. Walter, L. R. Sulak, T. Sekiguchi, Erin O'Sullivan, K. Martens, Y. Nakajima, M. B. Smy, Xiao-yan Li, M. Jiang, K. E. Nakamura, L. Labarga, I. T. Lim, Volodymyr Takhistov, P. Weatherly, B. Richards, Y. Nishimura, M. Murdoch, Yasuhiro Kishimoto, Takashi Kobayashi, K. Frankiewicz, Ll. Marti, M. Murase, M. Koshiba, H. A. Tanaka, Yuta Kato, R. G. Park, T. Ishida, M. J. Wilking, S. N. Smith, H. K. Tanaka, Yoshihiro Suzuki, Makoto Hasegawa, R. Akutsu, R. J. Wilkes, Francesco Muto, A. Cole, J. Y. Kim, Kate Scholberg, Ke. Abe, A. Orii, S. Berkman, M. Miura, Seiko Hirota, J. L. Stone, Hiroyuki Sekiya, Y. Okajima, A. Pritchard, M. Hartz, Soo-Bong Kim, Yuichi Oyama, Y. Fukuda, R. P. Litchfield, S. Nakayama, A. Takenaka, L. Wan, F. Di Lodovico, S. Tobayama, K. Abe, K. Nakamura, M. Kuze, Y. Takeuchi, Shintaro Ito, W. R. Kropp, Y. M. Zhang, T. Hayashino, H. W. Sobel, D. Hamabe, M. Friend, S. Mine, K. M. Tsui, A. Konaka, Yusuke Koshio, H. Nagata, G. Yang, J. Gustafson, Hirokazu Ishino, T. Tomura, Yoshitaka Kuno, H. Okazawa, S. Matsuno, Shigeki Tasaka, M. Elnimr, K. Choi, Pablo Fernandez, J. S. Jang, A. Himmel, R. G. Calland, E. Kearns, Masashi Yokoyama, N. D. Patel, T. Ishizuka, Tsuyoshi Nakaya, C. K. Jung, Masato Shiozawa, Y. Choi, Y. Sonoda, Yoshitaka Itow, G. Pronost, John Hill, D. L. Wark, M. Mori, Song Chen, and Science and Technology Facilities Council (STFC)

Subjects
Particle physics, Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy & Astrophysics, 01 natural sciences, Physics, Particles & Fields, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Tau neutrino, 0103 physical sciences, 010306 general physics, Neutrino oscillation, DETECTOR, Charged current, Physics, Science & Technology, hep-ex, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Solar neutrino problem, Physical Sciences, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Super-Kamiokande
Abstract

Using 5326 days of atmospheric neutrino data, a search for atmospheric tau neutrino appearance has been performed in the Super-Kamiokande experiment. Super-Kamiokande measures the tau normalization to be 1.47±0.32 under the assumption of normal neutrino hierarchy, relative to the expectation of unity with neutrino oscillation. The result excludes the hypothesis of no-tau appearance with a significance level of 4.6σ. The inclusive charged-current tau neutrino cross section averaged by the tau neutrino flux at Super-Kamiokande is measured to be (0.94±0.20)×10−38 cm2. The measurement is consistent with the Standard Model prediction, agreeing to within 1.5σ.

Published
2017
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22. Search for diffuse neutrino flux from astrophysical sources with MACRO

Author

Ioannis Katsavounidis, R. Caruso, D. Levin, F. Guarino, G. Sirri, P. Pistilli, B. C. Choudhary, R. Pazzi, S. Petrera, M. Giorgini, D. G. Michael, Maurizio Spurio, A. Surdo, C. W. Walter, F. Cafagna, M. De Vincenzi, E. Kearns, Hyun-Chul Kim, I. De Mitri, F.J. Ronga, C. Satriano, Maximiliano Sioli, C. R. Bower, L. R. Sulak, P. Serra, G. Auriemma, Gregory Tarle, M. Brigida, J. Reynoldson, Teresa Montaruli, C. De Marzo, M. N. Mazziotta, V. Togo, A. Rainò, C. Forti, M. J. Longo, S. Cecchini, Np Longley, R. Steinberg, A. Rrhioua, G. Giacomelli, C. Bemporad, J. A. Musser, C. E. Lane, C. Favuzzi, C. W. Peck, Roberto Bellotti, M. Vakili, D. Martello, L. Patrizii, V. Popa, Yvonne Becherini, A. Di Credico, D. Campana, Fabrizio Cei, R. Antolini, S. Kyriazopoulou, R.M. Heinz, Alec Habig, F. Maaroufi, G. de Cataldo, Donato Nicolo, G. Osteria, G. Battistoni, G. Mancarella, Kate Scholberg, R. C. Webb, M. Ambrosio, E. Lamanna, G. C. Barbarino, C. Bloise, P. Fusco, D. Bakari, R. Nolty, A. Marzari-Chiesa, M. Spinetti, Marco Monteno, Andrea Carlo Marini, L. Perrone, Annarita Margiotta, Eugenio Scapparone, G. Giannini, Barry C. Barish, N. Giglietto, H. Dekhissi, Severino Angelo Maria Bussino, Mario Sitta, C. Gustavino, C. Orth, O. Erriquez, G. Mandrioli, M. Cozzi, A. A. Grillo, S. Coutu, M. Calicchio, Halina Bilokon, Erik Katsavounidis, S. L. Mufson, V. Chiarella, P. Monacelli, M. Carboni, J. L. Stone, F. Loparco, Paolo Lipari, M. Grassi, J. Derkaoui, P. Spinelli, Kael Hanson, P. Bernardini, Vincenzo Patera, A. Sciubba, A. Baldini, O. Palamara, E. Iarocci, Ambrosio M., Antolini R., Auriemma G., Bakari D., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Becherini Y., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bloise C., Bower C., Brigida M., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Caruso R., Cecchini S., Cei F., Chiarella V., Choudhary B.C., Coutu S., Cozzi M., de Cataldo G., Dekhissi H., de Marzo C., de Mitri I., Derkaoui J., de Vincenzi M., di Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Grillo A., Guarino F., Gustavino C., Habig A., Hanson K., Heinz R., Iarocci E., Katsavounidis E., Katsavounidis I., Kearns E., Kim H., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Longley N.P., Longo M.J., Loparco F., Maaroufi F., Mancarella G., Mandrioli G., Margiotta A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Orth C., Osteria G., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C.W., Perrone L., Petrera S., Pistilli P., Popa V., Raino A., Reynoldson J., Ronga F., Rrhioua A., Satriano C., Scapparone E., Scholberg K., Sciubba A., Serra P., Sioli M., Sirri G., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Vakili M., Walter C.W., Webb R., Ambrosio, M, Antolini, R, Auriemma, G, Bakari, D, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bloise, C, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Caruso, R, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, Cozzi, M, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Grillo, A, Guarino, F, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Orth, C, Osteria, G, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Satriano, C, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Walter, Cw, Webb, R., M., Ambrosio, Bernardini, Paolo, Martello, Daniele, DE MITRI, Ivan, Perrone, Lorenzo, Mancarella, Giovanni, Macro, Collaboration, R., Antolini, G., Auriemma, D., Bakari, A., Baldini, Barbarino, Giancarlo, B. C., Barish, G., Battistoni, Y., Becherini, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, C., Bloise, C., Bower, M., Brigida, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, R., Caruso, S., Cecchini, F., Cei, V., Chiarella, B. C., Choudhary, S., Coutu, M., Cozzi, G. D., Cataldo, H., Dekhissi, C. D., Marzo, I. D., Mitri, J., Derkaoui, M. D., Vincenzi, A. D., Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, A., Grillo, Guarino, Fausto, C., Gustavino, A., Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, N. P., Longley, M. J., Longo, F., Loparco, F., Maaroufi, G., Mancarella, G., Mandrioli, A., Margiotta, A., Marini, D., Martello, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolo, R., Nolty, C., Orth, G., Osteria, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, L., Perrone, S., Petrera, P., Pistilli, V., Popa, A., Raino, J., Reynoldson, F., Ronga, A., Rrhioua, C., Satriano, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra, M., Sioli, G., Sirri, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle, V., Togo, M., Vakili, C. W., Walter, and R., Webb

Subjects
HIGH-ENERGY NEUTRINOS, Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, grbs, FOS: Physical sciences, PROPAGATION, Astrophysics, agns, LIMIT, neutrino, AGN, Neutrino oscillation, DETECTOR, Astroparticle physics, Physics, Astrophysics (astro-ph), High Energy Physics::Phenomenology, Astronomy and Astrophysics, GRB, Solar neutrino problem, Neutrino, AGNs, GRBs, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino astronomy
Abstract

Many galactic and extragalactic astrophysical sources are currently considered promising candidates as high energy neutrino emitters. Astrophysical neutrinos can be detected as upward-going muons produced in charged-current interactions with the medium surrounding the detector. The expected neutrino fluxes from various models start to dominate on the atmospheric neutrino background at neutrino energies above some tens of TeV. We present the results of a search for an excess of high energy upward-going muons among the sample of data collected by MACRO during ~5.8 years of effective running time. No significant evidence for this signal was found. As a consequence, an upper limit on the flux of upward-going muons from high-energy neutrinos was set at the level of 1.7 10^(-14) cm^(-2) s^(-1) sr^(-1). The corresponding upper limit for the diffuse neutrino flux was evaluated assuming a neutrino power law spectrum. Our result was compared with theoretical predictions and upper limits from other experiments., 19 pages, 8 figures, 2 tables

Published
2003

23. Search for Neutrinos in Super-Kamiokande associated with Gravitational Wave Events GW150914 and GW151226

Author

Takahiro Hiraki, Y. Totsuka, S. Cao, Hirokazu Ishino, C. Bronner, T. Kayano, C. W. Walter, K. Sakashita, J. G. Learned, Seiko Hirota, J. S. Jang, A. T. Suzuki, T. Tsukamoto, Yoshitaka Itow, C. Xu, H. K. Tanaka, R. J. Wilkes, Takaaki Kajita, T. Ishida, J. F. Martin, J. L. Raaf, M. Goldhaber, Hiroyuki Sekiya, T. Nakadaira, A. Himmel, Yejin Zhang, T. Ishii, Y. Fukuda, L. Wan, Y. Kuno, Makoto Sakuda, R. G. Calland, T. Suzuki, Z. Li, Shigeki Tasaka, Y. Takeuchi, C. Kachulis, V. Takhistov, K. Huang, K. Haga, Atsushi Takeda, S. Mine, A. Kibayashi, C. Yanagisawa, J. L. Palomino, Y. Hayato, B. L. Hartfiel, John Hill, K. Martens, M. Miura, J. Gustafson, L. Labarga, Y. Nishimura, K. Nishijima, T. Kobayashi, A. Konaka, Takehisa Hasegawa, K. Kaneyuki, N. Hong, Tomohiko Nakajima, T. Sekiguchi, Erin O'Sullivan, M. Friend, M. R. Vagins, Kimihiro Okumura, Joshua Hignight, Yusuke Koshio, H. A. Tanaka, T. Tomura, Yasunari Suzuki, K. Iyogi, C. K. Jung, S. Moriyama, R. A. Wendell, Kate Scholberg, G. Santucci, Masayuki Nakahata, H. Okazawa, Takaaki Mori, E. Richard, M. Hartz, Song Chen, I. T. Lim, W. R. Kropp, Masato Shiozawa, Y. Choi, S. Tobayama, M. Jiang, J. L. Stone, Yasuhiro Kishimoto, M. Ikeda, S. Nakayama, L. R. Sulak, T. Yano, K. Nakamura, R. Tacik, D. Fukuda, S. Matsuno, C. Nantais, S. B. Kim, J. Y. Kim, J. Kameda, A. Orii, E. Kearns, Masashi Yokoyama, K. Choi, Pablo Fernandez, P. Mijakowski, N. D. Patel, T. Ishizuka, Tsuyoshi Nakaya, Kazuhiro Suzuki, S. N. Smith, Yusuke Suda, K. S. Ganezer, M. J. Wilking, K. Frankiewicz, T. Nakamura, J. Imber, M. B. Smy, Xiao-yan Li, Ll. Marti, S. Berkman, Yuichi Oyama, A. Minamino, K. Abe, M. Koshiba, R. G. Park, F. d. M. Blaszczyk, P. Weatherly, R. Akutsu, Yuuki Nakano, H. W. Sobel, and UAM. Departamento de Física Teórica

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, Gravitational waves, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Coincident, 0103 physical sciences, GW151226, Neutrinos, 010303 astronomy & astrophysics, Zenith, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Muon, 010308 nuclear & particles physics, Gravitational wave, High Energy Physics::Phenomenology, Física, Astronomy and Astrophysics, 13. Climate action, Space and Planetary Science, High Energy Physics::Experiment, Neutrino, Astroparticle physics, Super-Kamiokande, Astrophysics - High Energy Astrophysical Phenomena, Event (particle physics)
Abstract

Astrophysical Journal Letters 830.1 (2016): L11 reproduced by permission of the AAS, We report the results from a search in Super-Kamiokande for neutrino signals coincident with the first detected gravitational-wave events, GW150914 and GW151226, as well as LVT151012, using a neutrino energy range from 3.5 MeV to 100 PeV. We searched for coincident neutrino events within a time window of ±500 s around the gravitational-wave detection time. Four neutrino candidates are found for GW150914, and no candidates are found for GW151226. The remaining neutrino candidates are consistent with the expected background events. We calculated the 90% confidence level upper limits on the combined neutrino fluence for both gravitational-wave events, which depends on event energy and topologies. Considering the upward-going muon data set (1.6 GeV-100 PeV), the neutrino fluence limit for each gravitational-wave event is 14-37 (19-50) cm-2 for muon neutrinos (muon antineutrinos), depending on the zenith angle of the event. In the other data sets, the combined fluence limits for both gravitational-wave events range from 2.4 ×104 to 7.0 ×109 cm-2, The Super-Kamiokande experiment has been built and operated from funding by the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation. Some of us have been supported by funds from the Korean Research Foundation (BK21 and KNRC), the National Research Foundation of Korea (NRF-20110024009), the European Union (H2020 RISE-GA641540-SKPLUS), the Japan Society for the Promotion of Science, the National Natural Science Foundation of China under grant No. 11235006, and the Scinet and Westgrid consortia of Compute Canada

Published
2016

24. First measurement of radioactive isotope production through cosmic-ray muon spallation in Super-Kamiokande IV

Author

H.A. Tanaka, K. Martens, M. Koshiba, Yuuki Nakano, C. Bronner, W. R. Kropp, S. Tobayama, K. Huang, J. G. Learned, K. Nakamura, Y. Nishimura, P. de Perio, A. Kibayashi, J. S. Jang, A. Himmel, A. L. Renshaw, Y. M. Zhang, A. T. Suzuki, J. F. Martin, C. W. Walter, H. W. Sobel, Y. Hayato, C. K. Jung, Masato Shiozawa, Y. Choi, N. Hong, T. Nakadaira, J. Kameda, Makoto Sakuda, C. Yanagisawa, P. Weatherly, E. Kearns, Masashi Yokoyama, T. Tsukamoto, K. Frankiewicz, J. L. Raaf, Joshua Hignight, T. Ishizuka, Tsuyoshi Nakaya, C. Kachulis, K. Kaneyuki, John Hill, Hiroyuki Sekiya, L. Labarga, A. Minamino, T. Kobayashi, P. Mijakowski, T. Sekiguchi, K. Nishijima, G. Carminati, C. Nantais, S. B. Kim, J. Y. Kim, A. Orii, Y. Fukuda, I. Kametani, K. Choi, Pablo Fernandez, J. L. Palomino, S. Berkman, Kazuhiro Suzuki, Y. Takeuchi, Y. Totsuka, Susumu Takahashi, T. Wongjirad, T. J. Irvine, Shaomin Chen, Yasunari Suzuki, Takaaki Kajita, H. K. Tanaka, Takaaki Mori, M. Miura, B. L. Hartfiel, Atsushi Takeda, Yuichi Oyama, K. Iyogi, S. Nakayama, T. Yano, K. Ieki, Y. Haga, M. Ikeda, Z. Li, M. R. Vagins, T. Ishii, M. J. Wilking, Shigeki Tasaka, R. J. Wilkes, A. Konaka, T. Ishida, M. Friend, J. L. Stone, N. J. Griskevich, E. Richard, R. A. Wendell, K. Abe, Yusuke Koshio, Yoshitaka Itow, R. Tacik, T. Tomura, Kimihiro Okumura, Yusuke Suda, K. Sakashita, I. T. Lim, T. Suzuki, H. Okazawa, S. Moriyama, Masayuki Nakahata, J. Imber, Yasuhiro Kishimoto, M. Goldhaber, K. S. Ganezer, M. B. Smy, Xiao-yan Li, Ll. Marti, Seiko Hirota, T. Kikawa, S. Matsuno, V. Takhistov, T. Kayano, S. N. Smith, Y. Kuno, L. R. Sulak, S. Mine, J. Gustafson, Takehisa Hasegawa, Tomohiko Nakajima, Kate Scholberg, M. Hartz, and Hirokazu Ishino

Subjects
Physics, Particle physics, Physics - Instrumentation and Detectors, Muon, 010308 nuclear & particles physics, Chlorine-36, Order (ring theory), 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Phenomenology, 13. Climate action, 0103 physical sciences, Neutron, Production (computer science), Neutrino, Astrophysics - High Energy Astrophysical Phenomena, 010306 general physics, Super-Kamiokande, Energy (signal processing)
Abstract

Cosmic-ray-muon spallation-induced radioactive isotopes with $\beta$ decays are one of the major backgrounds for solar, reactor, and supernova relic neutrino experiments. Unlike in scintillator, production yields for cosmogenic backgrounds in water have not been exclusively measured before, yet they are becoming more and more important in next generation neutrino experiments designed to search for rare signals. We have analyzed the low-energy trigger data collected at Super-Kamiokande-IV in order to determine the production rates of $^{12}$B, $^{12}$N, $^{16}$N, $^{11}$Be, $^9$Li, $^8$He, $^9$C, $^8$Li, $^8$B and $^{15}$C. These rates were extracted from fits to time differences between parent muons and subsequent daughter $\beta$'s by fixing the known isotope lifetimes. Since $^9$Li can fake an inverse-beta-decay reaction chain via a $\beta + n$ cascade decay, producing an irreducible background with detected energy up to a dozen MeV, a dedicated study is needed for evaluating its impact on future measurements; the application of a neutron tagging technique using correlated triggers was found to improve this $^9$Li measurement. The measured yields were generally found to be comparable with theoretical calculations, except the cases of the isotopes $^8$Li/$^8$B and $^9$Li., Comment: 12 pages, 6 figures, accepted by PRD for publication

Published
2016

25. Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE): Conceptual Design Report. Volume 4: The DUNE Detectors at LBNF

Author

M. Headley, V. Singh, L. L. Kormos, E. Hazen, A. Kumar, R. K. Plunkett, Christopher L. Marshall, R. Schmitt, E. Blaufuss, Amanpreet Kaur, C. Vignoli, David Malon, P vanGemmeren, A. Heavey, S. L. Mufson, J. Cushing, S. R. Elliott, A. deGouvea, F. Pietropaolo, T. Hasegawa, V. Papadimitriou, Roberto L. N. Oliveira, D. Waters, D. Ruterbories, A. Topkar, W. Honey, T. Yang, Marvin Johnson, Mingshui Chen, Carl H. Albright, M. Muether, S. Rescia, John F. Beacom, J. Johnstone, M.D.L. Lopes, A. Verdugo, L.S. Rochester, Y. Ng, Xiaohui Qian, B. Page, B. Rebel, Steven Gardiner, P. DeLurgio, Ernesto Kemp, D. Wells, C. Grant, D. Warner, D. Aristizabal, S. Bansal, T. L. Usher, Germano Guedes, D. Duchesneau, M. C. Sanchez, L. Camilleri, Joshua R. Klein, D.W. Schmitz, R. VanBerg, H. L. H. Wong, B. Viren, Mario Campanelli, J. L. Stone, B. Lundberg, O. Palamara, A. Laminack, D. Lissauer, Francesco Tortorici, M. A. Acero, T. Tope, D. Cianci, David H. Adams, C. Yanagisawa, J. Lowery, Ranjan Dharmapalan, J. Mousseau, W. R. Kropp, A. Perch, J. Moon, C. Palomares, R. Andrews, J. Hartnell, N. Kazaryan, Kendall Mahn, V. Bellini, Pomita Ghoshal, M. Adamowski, D. Girardelli, Bindu A. Bambah, Y. Nakajima, A. N. Khotjantsev, D. Reitzner, D. Smargianaki, B. Eberly, T. Liu, S. Glavin, J. Asaadi, G. d. Geronimo, M. B. Smy, M. Baird, Z. Moss, Gustaaf Brooijmans, Alessandro Menegolli, R. B. Patterson, J. A. J. Matthews, M. Weber, Dmitry Gorbunov, M. Tzanov, R. L. Talaga, S.K. Mandal, C. Greenley, G. W. Sullivan, Dimitar Mladenov, Anjan K. Giri, T. Boone, E. James, L. Fields, T. A. Bolton, S. A. Dytman, R. Rucinski, Alexander Mann, Gabriel Perdue, S. Bolognesi, B. Szczerbinska, F. Bay, R. D. McKeown, C. Lane, S. Chembra, Shu Li, Sangeeta Malhotra, D. Garcia-Gamez, R. L. Gill, B. Wang, J. Spitz, B. T. Fleming, E. McCluskey, Timothy M. Shaw, T. Patzak, S. Horikawa, Z. Pavlovic, E. Pantic, H. M. O'Keeffe, J. Anderson, A. Friedland, J. P. Lopez, R. Raboanary, P. Schlabach, J. Strait, T. A. Forest, M. D. Messier, R. Potenza, Narendra Sahu, A. M. McGowan, R. Santorelli, B. V. K. S. Potukuchi, C. Montanari, W.M. Lee, M. Toups, M. Kordosky, D. Mertins, Matthew Wetstein, Wenzhao Wei, S. Kohn, T. J. Haines, Jasvinder A. Singh, G. Introzzi, D. Naples, Kazuhiro Terao, Q. Liu, M. Potekhin, Stanley G. Wojcicki, E. Arrieta-Diaz, J. Davies, P. Novella, Andrew Blake, A. L. Renshaw, M. O. Wascko, J. Insler, Jason Kumar, C. Jen, L. Wang, G. Koizumi, M. M. Khabibullin, E. Amador, T. Grundy, Yu. Onishchuk, B. Mitrica, T. Hamernik, D. Wenman, Gianluca Petrillo, V. J. Guarino, N. McCauley, A. Tonazzo, D. J. Taylor, A. B. Balantekin, T. Nicholls, S. Jiménez, William A. Barletta, B. Zamorano, R. Saakyan, J. R. Macier, S. B. Boyd, T. Xin, J. Bremer, M. J. Wilking, M. E. Convery, R. Gran, N. Pruthi, K. J. Anderson, Enrique Calvo, Peter Wittich, Artur F. Izmaylov, J. Hylen, C. Touramanis, G. A. Valdiviesso, Irina Mocioiu, Katsuya Yonehara, C. M. Sutera, Kenneth Long, T. E. Coan, D. Autiero, H. K. Hadavand, S. Menary, J. M. Paley, Antonio Ereditato, C. Rubbia, T. Olson, O. G. Miranda, A. G. Cocco, Gary Drake, J.A. Sepulveda-Quiroz, A. Guglielmi, T. Lundin, S. Fuess, Mary S. Richardson, S. Emery, J. M. Link, Jingbo Ye, N. Yershov, H. S. Chen, Davit Mayilyan, Christian Farnese, T. Loew, M. Bansal, T. R. Junk, Y. A. Ramachers, Akitaka Ariga, Marvin L Marshak, G. Karagiorgi, Sarah Catherine Eno, William J. Marciano, Philip D Adamson, R. Vandewater, Kevin Scott McFarland, M. Torti, M. Tortola, M. Antonello, Leonidas Kalousis, S. Shahsavarani, N. Simos, S. Mandodi, B. J. P. Jones, Rob Edgecock, R. Haenni, G. Meng, H. Pessard, O. Mena, J. Dolph, L. Suter, N. Graf, Abraham D. Falcone, T. Gamble, B. Bourguille, L. Greenler, Francesco Lanni, Zulkifli Ahmad, L. A. Corwin, D. Stefan, M. V. Diwan, Joseph Lykken, E. Niner, J. K. Nelson, P. Novakova, Paulo Rodrigues, E. Blucher, L. Whitehead, S. Ventura, C. Y. Chi, I. Gil-Botella, B. Carls, Valentina Greco, N. P. Samios, M. Elnimr, B. Sands, R. Milincic, C. A. Moura, M. Newcomer, Kirk T. McDonald, J. Reichenbacher, K. Mavrokoridis, F. d. M. Blaszczyk, J. L. Raaf, Paolo Crivelli, A. Sousa, M. Mehrian, Olga Beltramello, H. Wang, K. Riesselmann, M. Nunes, M. Bergevin, M. Bass, Yu. G. Kudenko, J. H. Jo, Robert McTaggart, Georg G. Raffelt, E. Tziaferi, A. Holin, L. Valerio, A. Scaramelli, A. D. Marino, C. Rudolphvonrohr, V.M. Gehman, S. Santana, C. Mariani, K. Lande, S. Tariq, S. M. Fernandes, S. J. Brice, Gregory J Pawloski, Carlos Escobar, J. D. Perkin, S. R. Das, B. K. Fujikawa, G. T. Garvey, Sukalyan Chattopadhyay, H. Jostlein, V.B. Chandratre, M. Bonesini, J. d. Anjos, Matthew L Strait, M. C. Tamsett, J.V. Dawson, Giovanni Bellettini, G.D. Barr, Kam Biu Luk, S. Manly, M. Wallbank, Jack Fried, S. Childress, T. Miao, E. Berman, R. W. Hackenburg, H. Duyang, Cerian F Jackson, B. Baibussinov, T. K. Warburton, R. Petti, Jan T. Sobczyk, Vipin Bhatnagar, A. Aurisano, Marzio Nessi, H. Greenlee, I. Singh, H. Meyer, Michael Benjamin Andrews, A. Schukraft, A. A. Machado, Q. Z. Li, B. Norris, R. Guenette, K. Biery, Z. Li, Magdalena Malek, A. Cervera-Villanueva, M. S. Athar, P. N. Ratoff, Dongming Mei, Subrata Pal, A. Bashyal, Andrew Brandt, T. Kutter, A. Hackenburg, V. Aushev, Jorge G. Morfin, R. Tsenov, R. Kriske, Sergey A. Kulagin, Rudolf Oldeman, B. Kirby, André Rubbia, B. Paulos, D. Goeldi, C. E. Thorn, G. Varner, C. Ghag, J. Shahi, B. Kayser, C. Adams, S. H. Kettell, G. Brunetti, C. Densham, F. Noto, G. Mahler, M. Avila, J. Felde, P. Przewlocki, Matthew Mewes, D. Mcnulty, S. Adhikari, J. Osta, J. A. Nowak, R. M. Brown, Davide Sgalaberna, D. M. Asner, William Morse, Jan Conrad, G. P. Zeller, W. Sippach, C. D. Moore, D. Wahl, Nitish Dhingra, J. Willhite, T.V. Vieira, C. Taylor, W. E. Sondheim, Andrea Zani, J. Maricic, Anatoly Kopylov, Alec Habig, G. H. Collin, D. A. Dwyer, F. Mammoliti, J. K. Dejong, D. M. Lee, J. Park, L. Zang, L. Falk, N.V. Mokhov, C. E. Tull, K. Soustruznik, J. Howell, Xinhua Bai, X. Luo, Y. Karyotakis, K. Vaziri, D. Whittington, J. J. Back, C. Regenfus, Chao Zhang, H. Schellman, M. Fitton, A. Hahn, H. M. Steiner, N. S. Lockyer, H. R. Gallagher, M. Ross-Lonergan, B. P. Roe, L. S. Littenberg, Robert Wilson, C. S. Mishra, M. Rossella, M. Tripathi, S. Matsuno, A. Delbart, Xingguo Li, X. Bu, P. Vahle, G. A. Horton-Smith, A. Kostelecky, M. Hogan, S. Stoica, D. A. Harris, S. Murphy, Michael Thorpe, S. DiLuise, A. J. Finch, R. A. Johnson, G.L. Raselli, J. Huston, Stephen J. Parke, M. P. Decowski, D. Ioanisyan, S. Galymov, C. Mauger, L. Chaussard, P. Benetti, R. Sulej, S. Bertolucci, H. S. Budd, Rex Tayloe, F. Cavanna, N. J. Buchanan, X. Tian, Paolo Calafiura, A. Zalewska, G. B. Mills, Z. Parsa, B. Bleakley, Federico Sanchez, T. Vrba, H. Mendez, H. G. Berns, Lokesh Kumar, P. Mehta, M. Graham, Antonio Palazzo, F. Boffelli, S. Grullon, B. R. Littlejohn, I. Tropin, Michele Cascella, T. Viant, P. Ballett, N. Walsh, N. McConkey, S. J. Patton, E. Church, Michael Mooney, F.R. Torres, D. Cline, R. Imlay, I. Rakhno, T. Kobilarcik, Rukmani Mohanta, E.D. Zimmerman, E. Guardincerri, C. Vilela, M. Vagins, T. Wang, J. M. Yu, Animesh Chatterjee, G. Brown, E. Gramelini, Andre Petukhov, S. Magill, M. Groh, Martin Auger, L. Mualem, Artur M. Ankowski, J. Zalesak, J. G. Learned, E. Segreto, F. Jediny, Sarah Mancina, Niki Saoulidou, D. E. Jaffe, D. Edmunds, John Evans, E. Tatar, Utku Kose, Daniel A. Dale, David Martinez, John Ramsey, J. Urheim, Akhil Jhingan, W. Metcalf, Z. Djurcic, E. Mazzucato, K. Aryal, Maury Goodman, N. J. C. Spooner, O. V. Mineev, M. Bishai, R. Gandhi, James Stewart, S. R. Seibert, Joshua J. Turner, Parminder Kaur, J. Schwehr, D. Montanari, A. Rappoldi, T. Wachala, J. S. Díaz, Keith Rielage, J. Martín-Albo, J.J. Gómez-Cadenas, E.L. Snider, B. Russell, K. Grzelak, M. A. Leiguideoliveira, Amir Farbin, V. Paolone, J. Schneps, C. K. Jung, K. Yarritu, A. Higuera, Y. T. Tsai, Yang Li, R. Zwaska, Z. Vallari, Simon Lin, Pedro Cunha de Holanda, D. Karasavvas, Eric Endress, S. Hays, Paul Wilson, M. Luethi, E. Calligarich, Kuan Ken Lee, K. Chen, Sandip Pakvasa, K. Wood, N. Poudyal, L. F. Thompson, Asher Kaboth, L. Sexton-Kennedy, S. Lockwitz, G. Sinev, S. Hans, R. Musser, B. Bugg, Paola Sala, L. Bartoszek, S. Golapinni, B. Bhuyan, P. Hurh, W. H. Miller, O.B. Rodrigues, C. Bromberg, Brajesh C Choudhary, M. A. Thomson, R. Carr, J. Libo, M. Diamantopoulou, J. Bian, Yasaman Farzan, R. Roser, J. G. Boissevain, Caroline Morris, A. Gendotti, A. Himmel, J. Cranshaw, M. Zito, Bo Yu, S. Pordes, Thorsten Lux, I. M. Anghel, C. M. Castromonte, P. deJong, N. Solomey, R. Shrock, S. Bordoni, W. Fox, J. M. LoSecco, M. Khandaker, T. Kafka, M. H. Shaevitz, N. Barros, C. Booth, M. Rosen, Silvia Pascoli, M. Soderberg, Subhasmita Mishra, R. A. Gomes, Serhan Tufanli, B. Bhandari, D. Gibin, M. Stancari, F. Sergiampietri, Hye Young Lee, Gavin Davies, Michael DuVernois, V. Bocean, J. A. Musser, E. Pennacchio, Z. J. Liptak, K. Nikolics, R. J. Nichol, E. Kearns, P. Snopok, M. Sorel, Rohit Sharma, Sau Lan Wu, K. V. Tsang, Kaushik De, Timothyblake Watson, Y. Uchida, C. Mossey, R.A. Rameika, R. Svoboda, Gus Sinnis, Veljko Radeka, Y. Meng, E. Guarnaccia, Rebecca Bernstein, W. C. Louis, D. Navas, T. Blackburn, M. D. Haigh, Sandhya Choubey, A. Mefodiev, K. M. Heeger, R. Acciarri, Siqi Yang, Tomoko Ariga, Karol Lang, D. Cherdack, S.C. Timm, Milos Lokajicek, Minfang Yeh, Stephen T. Dye, G. Zavala, J. C. Thomas, M. Gold, C. McGrew, G. Vasseur, M. Thiesse, G. Diazbautista, K. Iwamoto, A. M. Szelc, Gareth J. Barker, I. Stancu, I. Shyrma, C. Andreopoulos, P. Shanahan, A. Bercellie, R. Corey, G.V. Velev, E. Catano-Mur, J. Fowler, S. J. M. Peeters, José W. F. Valle, B. Howard, Thomas Strauss, P. Lebrun, A. Radovic, A. Weinstein, Ara Ioannisian, H. T. Rakotondramanana, A. Curioni, R. W. Kadel, M. Borysova, Kate Scholberg, T. Ovsjannikova, S. Kemboi, J. Navarro, L. Periale, I. Kreslo, V. A. Kudryavtsev, D. R. Tiedt, G. Kumar, A. White, T. Handler, M. Worcester, A. Aranda-Fernandez, L. Rakotondravohitra, A. C. Weber, O. Prokofiev, J. Marteau, Max Robinson, C. Cantini, D. Pushka, N. Grant, H. Sobel, L. Favilli, J. Hewes, Srubabati Goswami, S.U. Shankar, D. Cronin-Hennessy, B. Baller, B. R. Behera, M. H. Kirby, T. Alion, D. Brailsford, S. Striganov, Laura Paulucci, C. D. Christofferson, B. Morgan, Y. Sun, A. Remoto, A. Hatzikoutelis, J. A. B. Coelho, A. Marchionni, P. Cole, Yuri Kamyshkov, Julián Félix, F. Varanini, John Marshall, R. Sharma, T. Hill, A. M. Gago, J. Heise, Lindley Winslow, R. Hatcher, G. Christodoulou, T. Davenne, Angela Fava, C. W. James, J. Joshi, S. Centro, H. Merritt, Paul Keener, Karol Hennessy, S. Söldner-Rembold, G. Santucci, C. S. Lin, E. T. Worcester, Michael Kramer, and J. Stock

Subjects
Nuclear physics, Physics, Conceptual design, Neutrino detector, 010308 nuclear & particles physics, 0103 physical sciences, Deep Underground Neutrino Experiment, Neutrino, 010306 general physics, Baseline (configuration management), 01 natural sciences
Published
2016

26. Study of TeV neutrinos with upward showering muons in Super-Kamiokande

Author

C. W. Walter, R. Wendell, R. Svoboda, T. Ishizuka, S. Yamada, T. Sasaki, M. Yoshida, H. G. Berns, M. B. Smy, Y. Furuse, K. Kaneyuki, C. Saji, Masashi Yokoyama, R. Terri, A. Minamino, J. Dunmore, Takaaki Kajita, Y. Totsuka, K. Iida, M. Koshiba, Y. Oyama, B. S. Yang, Y. Choi, K. Ishihara, T. J. Haines, T. Sato, D. W. Liu, Haruki Watanabe, Masato Shiozawa, N. Tamura, H. Nishino, I. Kato, Lawrence Sulak, J. L. Raaf, J. L. Stone, S. Mine, Y. Takeuchi, Atsushi Takeda, E. Kearns, S. T. Clark, C. Ishihara, Shantanu Desai, Kunio Inoue, M. Sugihara, H. Ishii, C. K. Jung, T. Ishida, M. Swanson, K. Abe, T. Kobayashi, K. Nishikawa, T. Nakaya, T. Nakadaira, Yusuke Koshio, K. Nitta, J. Yoo, S. Yamamoto, Kate Scholberg, J. Y. Kim, C. McGrew, M. R. Vagins, C. Yanagisawa, K. Kobayashi, Y. Obayashi, K. Washburn, W. E. Keig, M. Hasegawa, Shigetaka Moriyama, S. Likhoded, G. Mitsuka, K. Ueshima, I. S. Jeong, M. Sakuda, Y. Hayato, R. Gran, T. Hasegawa, F. Dufour, I. T. Lim, H. K. Seo, A. K. Ichikawa, J. S. Jang, T. Tanaka, D. Kielczewska, Y. Kuno, K. Nishijima, S. Nakayama, M. Ishitsuka, N. Tanimoto, S. Tasaka, H. Okazawa, R. J. Wilkes, W. Wang, Masayuki Nakahata, Alec Habig, T. Koike, B. Hartfiel, Y. Takenaga, K. Okumura, Y. Fukuda, Y. Idehara, K. S. Ganezer, M. Miura, Hirokazu Ishino, M. D. Messier, C. Regis, J. Kameda, Katsuki Hiraide, S. Dazeley, J. P. Cravens, T. Ishii, H. Sato, Y. Gando, J. Hill, Yasunari Suzuki, S. Matsuno, G. Guillian, A. T. Suzuki, H. W. Sobel, Eric Thrane, M. Fechner, Y. Watanabe, W. R. Kropp, S. B. Kim, A. Clough, David William Casper, C. Mitsuda, H. Ogawa, K. K. Shiraishi, I. Higuchi, J. G. Learned, H. Maesaka, M. Goldhaber, T. Kato, Yoshitaka Itow, S. Hatakeyama, K. Nakamura, and A. Sarrat

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Bremsstrahlung, Astronomy and Astrophysics, High Energy Physics - Experiment, Nuclear physics, Pair production, WIMP, High Energy Physics::Experiment, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Super-Kamiokande, Neutrino oscillation, Zenith
Abstract

A subset of neutrino-induced upward through-going muons in the Super-Kamiokande detector consists of high energy muons which lose energy through radiative processes such as bremsstrahlung, e^{+} e^{-} pair production and photonuclear interactions. These ``upward showering muons'' comprise an event sample whose mean parent neutrino energy is approximately 1 TeV. We show that the zenith angle distribution of upward showering muons is consistent with negligible distortion due to neutrino oscillations, as expected of such a high-energy neutrino sample. We present astronomical searches using these high energy events, such as those from WIMP annihilations in the Sun, Earth and Galactic Center, some suspected point sources, as well as searches for diffuse flux from the interstellar medium., Comment: Submitted for publication to Astroparticle Physics. Fig 12 has slightly higher resolution in the version submitted to the journal

Published
2008

27. Measurements of atmospheric muon neutrino oscillations, global analysis of the data collected with MACRO detector

Author

Giuseppe Osteria, U. Denni, Annarita Margiotta, C. Bloise, P. Fusco, M. Spinetti, G. de Cataldo, Andrea Carlo Marini, D. Bakari, Maximiliano Sioli, C. E. Lane, V. Chiarella, V. Togo, P. Spinelli, Kael Hanson, R. Pazzi, C. Satriano, M. N. Mazziotta, C. W. Peck, J. Derkauoi, M. Giorgini, Gregory Tarle, Mario Sitta, C. Gustavino, C. W. Walter, E. Kearns, D. Levin, P. Monacelli, E. Iarocci, D. G. Michael, A. Mengucci, G. Battistoni, G. Mancarella, G. C. Barbarino, Maurizio Spurio, S. Coutu, D. Cosson, R.M. Heinz, J. Reynoldson, Teresa Montaruli, C. Forti, Frederic Jean Ronga, M. Grassi, G. Giannini, E. Lamanna, R. Nolty, B. C. Choudhary, M. De Vincenzi, G. Giacomelli, Shahid Manzoor, Roberto Bellotti, S P Mikheyev, A. Rainò, N. Giglietto, R. Steinberg, J. L. Stone, F. Loparco, Alec Habig, M. Vakili, C. Bemporad, F. Maaroufi, F. Guarino, G. Mandrioli, Halina Bilokon, Paolo Lipari, A. Frani, V. Popa, Hyun-Chul Kim, C. Orth, S. L. Mufson, M. Brigida, S. Petrera, R. Antolini, Donato Nicolo, L. Patrizii, A. A. Grillo, M. Ambrosio, M. J. Longo, A. Marzari-Chiesa, Marco Monteno, Yvonne Becherini, Fabrizio Cei, D. Martello, Ioannis Katsavounidis, S. Cecchini, C. Favuzzi, F. Cafagna, A. Di Credico, S. Kyriazopoulou, R. C. Webb, I. De Mitri, C. R. Bower, C. De Marzo, J. A. Musser, L. Perrone, H. Dekhissi, Kate Scholberg, P. Bernardini, M. Carboni, A. Surdo, D. Campana, Vincenzo Patera, A. Sciubba, A. Baldini, O. Palamara, B. C. Barish, E. Katsavounidis, L. R. Sulak, Macro, Collaboration, Guarino, Fausto, Barbarino, Giancarlo, M., Ambrosio, R., Antolini, D., Bakari, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, Y., Becherini, R., Bellotti, C., Bemporad, Bernardini, Paolo, H., Bilokon, C., Bloise, C., Bower, M., Brigida, F., Cafagna, D., Campana, M., Carboni, S., Cecchini, F., Cei, V., Chiarella, B. C., Choudhary, D., Cosson, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, U., Denni, J., Derkauoi, M., De Vincenzi, A., Di Credico, C., Favuzzi, C., Forti, A., Frani, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, A., Grillo, F., Guarino, C., Gustavino, A., Habig, K., Hanson, R., Heinz, E., Iarocci, E., Katsavounidi, I., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, M. J., Longo, F., Loparco, F., Maaroui, Mancarella, Giovanni, G., Mandrioli, S., Manzoor, A., Margiotta, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, A., Mengucci, D. G., Michael, S., Mikheyev, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolo', R., Nolty, C., Orth, G., Osteria, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, Perrone, Lorenzo, S., Petrera, V., Popa, A., Raino', J., Reynoldson, F., Ronga, C., Satriano, K., Scholberg, A., Sciubba, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle', V., Togo, M., Vakili, C. W., Walter, R., Webb, M. Ambrosio, R. Antolini, D. Bakari, A. Baldini, G. C. Barbarino, B. C. Barish, G. Battistoni, Y. Becherini, R. Bellotti, C. Bemporad, P. Bernardini, H. Bilokon, C. Bloise, C. Bower, M. Brigida, F. Cafagna, D. Campana, M. Carboni, S. Cecchini, bF. Cei, V. Chiarella, B. C. Choudhary, D. Cosson, S. Coutu, G. De Cataldo, H. Dekhissi, C. De Marzo, I. De Mitri, U. Denni, J. Derkauoi, M. De Vincenzi, A. Di Credico, C. Favuzzi, C. Forti, A. Frani, P. Fusco, G. Giacomelli, G. Giannini, N. Giglietto, M. Giorgini, M. Grassi, A. Grillo, F. Guarino, C. Gustavino, A. Habig, K. Hanson, R. Heinz, E. Iarocci, E. Katsavounidi, I. Katsavounidi, E. Kearn, H. Kim, S. Kyriazopoulou, E. Lamanna, C. Lane, D. S. Levin, P. Lipari, M. J. Longo, F. Loparco, F. Maaroufi, G. Mancarella, G. Mandrioli, S. Manzoor, A. Margiotta, A. Marini, D. Martello, A. Marzari-Chiesa, M. N. Mazziotta, A. Mengucci, D. G. Michael, S. Mikheyev, P. Monacelli, T. Montaruli, M. Monteno, S. Mufson, J. Musser, D. Nicolo, R. Nolty, C. Orth, G. Osteria, O. Palamara, V. Patera, L. Patrizii, R. Pazzi, C. W. Peck, L. Perrone, S. Petrera, V. Popa, l A. Rain`o, J. Reynoldson, F. Ronga, C. Satriano, K. Scholberg, A. Sciubba, M. Sioli, M. Sitta, nP. Spinelli, M. Spinetti, M. Spurio, R. Steinberg, J. L. Stone, L. R. Sulak, A. Surdo, G. Tarle’, V. Togo, M. Vakili, C. W. Walter, R. Webb, Giannini, Gianrossano, P., Bernardini, G., DE CATALDO, C., DE MARZO, I., DE MITRI, J., Derkaoui, DE VINCENZI, Mario, A., DI CREDICO, Alec, Habig, CHARLES E., Lane, F., Maaroufi, G., Mancarella, D., Martello, A., MARZARI CHIESA, S., Mikheev, STUART L., Mufson, D., Nicolo, L., Perrone, A., Raino, and G., Tarle

Subjects
oscillazione di flavour, Particle physics, Physics and Astronomy (miscellaneous), Neutrini atmosferici, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, MACRO, muon neutrino, Nuclear physics, Muon neutrino, neutrino oscillation, Macro, Neutrino oscillation, Engineering (miscellaneous), Charged current, Astroparticle physics, Physics, neutrino oscillations, atmospheric neutrino, High Energy Physics::Phenomenology, Detector, esperimento sotterraneo, macro detector, High Energy Physics::Experiment, Neutrino, Atmospheric neutrino
Abstract

The final analysis of atmospheric neutrino events collected with the MACRO detector is presented. Three different classes of events, generated by neutrinos in different energy ranges, are studied looking at rates, angular distributions and estimated energies. The results are consistent for all the subsamples and indicate a flux deficit that depends on energy and path…length of neutrinos. The no…-oscillation hypothesis is excluded at about 5 standard deviations, while the hypothesis of muon neutrino oscillating in tau neutrino gives a satisfactory description of all data. The parameters with highest probability in a two flavour scenario are maximum mixing and Delta m^2 = 0.0023 eV^2. This result is independent of the absolute normalization of the atmospheric neutrino fluxes. The data can also be used to put experimental constrain on this normalization.

Published
2004

28. Determination of Strength and Index Properties of Fine-Grained Soils Using a Soil Minipenetrometer

Author

B.S. Kyambadde and K J L Stone

Subjects
Materials science, Soil test, Atterberg limits, Geotechnical Engineering and Engineering Geology, Penetrometer, Strength of materials, Penetration test, law.invention, Shear strength (soil), Cone penetration test, law, Soil water, Geotechnical engineering, General Environmental Science
Abstract

This paper describes the use of a soil minipenetrometer (SMP) to determine the strength and index properties of fine-grained soils. The SMP has been developed to allow both fall cone and quasi-static penetration tests to be performed. Displacement controlled quasi-static penetration tests can be used for the direct measurement of undrained shear strength, both for remolded and undisturbed samples. In addition the quasi-static penetration test can be used to define an additional lower plastic limit parameter, the PL 100 , which represents the moisture content of a fine-grained soil with an undrained strength 100 times that at the liquid limit. This approach offers the advantage that removal of the coarse fraction is not required to estimate the PL 100 .

Published
2007

29. Physics potential of a long-baseline neutrino oscillation experiment using a J-PARC neutrino beam and Hyper-Kamiokande

Author

Masahiro Kuze, A. Himmel, Jan T. Sobczyk, A. Shaikhiev, I. M. Anghel, S. M. Oser, M. Zito, A. Blondel, Y. Seiya, M. Posiadala-Zezula, Jocelyn Monroe, S. Nakayama, M. Askins, M. Quinto, R. A. Wendell, S. Yen, R. A. Intonti, Y. Nishimura, M. M. Khabibullin, M. Y. Pac, T. Yano, A. T. Suzuki, C. K. Jung, Yusuke Suda, J. F. Martin, O. Drapier, F. d. M. Blaszczyk, A. K. Ichikawa, C. Riccio, J. H. Choi, T. Iijima, J. Kameda, M. Ikeda, C. Pistillo, Carsten Rott, C. Mariani, E. Scantamburlo, Masato Shiozawa, L. Ludovici, J. Imber, M. B. Smy, Y. Takeuchi, S. Berkman, Alexander Finch, M. Needham, J. D. Perkin, Makoto Sakuda, D. R. Hadley, A. Haesler, Mcd Sanchez, T. Kajita, H. M. O'Keeffe, S. Bhadra, A. Minamino, T. Tomura, S. L. Cartwright, James R. Wilson, M. O. Wascko, E. Kearns, Seiko Hirota, M. Gonin, L. Labarga, J. L. Palomino, Atsushi Takeda, M. R. Vagins, J. J. Back, N. McCauley, E. Radicioni, W. R. Kropp, K. S. Ganezer, S. Tobayama, F. Bay, Masashi Yokoyama, P. N. Ratoff, T. Kutter, R. Svoboda, John Hill, Jose L. Perez, J. A. Detwiler, Gus Sinnis, M. Nirkko, Y. Karadhzov, F. Muheim, Gareth J. Barker, T. Nicholls, M. Friend, Teppei Katori, C. Yanagisawa, G. A. Cowan, K. Choi, Tsuyoshi Nakaya, Gavin Davies, T. Sekiguchi, Erin O'Sullivan, S. D. Rountree, A. C. Kaboth, H.A. Tanaka, N. Tolich, T. Tsukamoto, C. W. Walter, Tracey Berry, Peter Ballett, S. Mine, Akimichi Taketa, Yuichi Oyama, Takaaki Mori, Christopher Martin, Yu. Kudenko, A. Redij, S. B. Kim, Akitaka Ariga, Ko Okumura, A. Korzenev, Hiromasa Tanaka, J. L. Stone, J. Insler, L. Cremonesi, L. L. Kormos, M. Mezzetto, Yasunari Suzuki, H. Aihara, Y. Okajima, S. Playfer, G.D. Barr, Brandon L. Hartfiel, R. B. Vogelaar, Koji Nakamura, A. N. Khotjantsev, I. T. Lim, Hiroyuki Sekiya, Koji Yamamoto, B. Jamieson, J. M. Poutissou, C. Bronner, Yoshitaka Itow, C. J. Densham, S. Bolognesi, Y. Fukuda, K. S. McFarland, M. Hartz, Kendall Mahn, T. Ishida, T. Mueller, T. Ovsiannikova, Ke. Abe, L. Marti, Kunio Inoue, R. Sacco, T. Feusels, Hiroshi Nunokawa, P. Beltrame, J. Kim, Leïla Haegel, C. McGrew, Y. Haga, M. Tzanov, J. G. Learned, Y. Hayato, C. Andreopoulos, O. V. Mineev, R. Asfandiyarov, André Rubbia, V. Galymov, E. Richard, R. J. Wilkes, H. K. Tanaka, M. Barbi, T. Lindner, D. Dewhurst, R. A. Owen, H. J. Rose, Hyper-Kamiokande Proto-Collaboraion, A. Bravar, C. Touramanis, H. Minakata, M. Hierholzer, S. Short, M. Bergevin, M. Jiang, Antonio Ereditato, N. Yershov, G. De Rosa, Yasuhiro Kishimoto, Todd D. Stewart, K. K. Joo, M. J. Wilking, E. Rondio, M. Miura, S. Di Luise, Masaki Ishitsuka, Takashi Kobayashi, A. Konaka, Kate Scholberg, R. Terri, M. Ross-Lonergan, K. Huang, P. Martins, E. Mazzucato, M. A. M. Rayner, I. Shimizu, Yusuke Koshio, David A. Wark, A. C. Weber, Hirokazu Ishino, J. Lagoda, G. Collazuol, Mark Scott, F. Retiere, V. Palladino, R. Tacik, D. Fukuda, M. G. Catanesi, F. Di Lodovico, D. J. Payne, L. Magaletti, J. A. Nowak, H. I. Jang, M. Koga, S. B. Boyd, Artur F. Izmaylov, S. Emery, Shunsaku Horiuchi, G. Carminati, V. Paolone, W. Y. Ma, L. F. Thompson, Yuki Fujii, Vincenzo Berardi, Pablo Fernandez, Etam Noah, Tomoko Ariga, T. Xin, G. Vasseur, Michael Thorpe, P. Gumplinger, F. Cafagna, M. Lawe, H. W. Sobel, Magdalena Malek, B. Quilain, Marco Laveder, T. J. Irvine, M. Fitton, A. Longhin, M. Ravonel, O. Perevozchikov, S. Moriyama, Masayuki Nakahata, Y. Uchida, Abe, K., Aihara, H., Andreopoulos, C., Anghel, I., Ariga, A., Ariga, T., Asfandiyarov, R., Askins, M., Back, J. J., Ballett, P., Barbi, M., Barker, G. J., Barr, G., Bay, F., Beltrame, P., Berardi, V., Bergevin, M., Berkman, S., Berry, T., Bhadra, S., Blaszczyk, F. d. M., Blondel, A., Bolognesi, S., Boyd, S. B., Bravar, A., Bronner, C., Cafagna, F. S., Carminati, G., Cartwright, S. L., Catanesi, M. G., Choi, K., Choi, J. H., Collazuol, G., Cowan, G., Cremonesi, L., Davies, G., DE ROSA, Gianfranca, Densham, C., Detwiler, J., Dewhurst, D., Di Lodovico, F., Di Luise, S., Drapier, O., Emery, S., Ereditato, A., Fernandez, P., Feusels, T., Finch, A., Fitton, M., Friend, M., Fujii, Y., Fukuda, Y., Fukuda, D., Galymov, V., Ganezer, K., Gonin, M., Gumplinger, P., Hadley, D. R., Haegel, L., Haesler, A., Haga, Y., Hartfiel, B., Hartz, M., Hayato, Y., Hierholzer, M., Hill, J., Himmel, A., Hirota, S., Horiuchi, S., Huang, K., Ichikawa, A. K., Iijima, T., Ikeda, M., Imber, J., Inoue, K., Insler, J., Intonti, R. A., Irvine, T., Ishida, T., Ishino, H., Ishitsuka, M., Itow, Y., Izmaylov, A., Jamieson, B., Jang, H. I., Jiang, M., Joo, K. K., Jung, C. K., Kaboth, A., Kajita, T., Kameda, J., Karadhzov, Y., Katori, T., Kearns, E., Khabibullin, M., Khotjantsev, A., Kim, J. Y., Kim, S. B., Kishimoto, Y., Kobayashi, T., Koga, M., Konaka, A., Kormos, L. L., Korzenev, A., Koshio, Y., Kropp, W. R., Kudenko, Y., Kutter, T., Kuze, M., Labarga, L., Lagoda, J., Laveder, M., Lawe, M., Learned, J. G., Lim, I. T., Lindner, T., Longhin, A., Ludovici, L., Ma, W., Magaletti, L., Mahn, K., Malek, M., Mariani, C., Marti, L., Martin, J. F., Martin, C., Martins, P. P. J., Mazzucato, E., Mccauley, N., Mcfarland, K. S., Mcgrew, C., Mezzetto, M., Minakata, H., Minamino, A., Mine, S., Mineev, O., Miura, M., Monroe, J., Mori, T., Moriyama, S., Mueller, T., Muheim, F., Nakahata, M., Nakamura, K., Nakaya, T., Nakayama, S., Needham, M., Nicholls, T., Nirkko, M., Nishimura, Y., Noah, E., Nowak, J., Nunokawa, H., O'Keeffe, H. M., Okajima, Y., Okumura, K., Oser, S. M., O'Sullivan, E., Ovsiannikova, T., Owen, R. A., Oyama, Y., Perez, J., Pac, M. Y., Palladino, Vittorio, Palomino, J. L., Paolone, V., Payne, D., Perevozchikov, O., Perkin, J. D., Pistillo, C., Playfer, S., Posiadala Zezula, M., Poutissou, J. M., Quilain, B., Quinto, M., Radicioni, E., Ratoff, P. N., Ravonel, M., Rayner, M. A., Redij, A., Retiere, F., Riccio, Ciro, Richard, E., Rondio, E., Rose, H. J., Ross Lonergan, M., Rott, C., Rountree, S. D., Rubbia, A., Sacco, R., Sakuda, M., Sanchez, M. C., Scantamburlo, E., Scholberg, K., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Shaikhiev, A., Shimizu, I., Shiozawa, M., Short, S., Sinnis, G., Smy, M. B., Sobczyk, J., Sobel, H. W., Stewart, T., Stone, J. L., Suda, Y., Suzuki, Y., Suzuki, A. T., Svoboda, R., Tacik, R., Takeda, A., Taketa, A., Takeuchi, Y., Tanaka, H. A., Tanaka, H. K. M., Tanaka, H., Terri, R., Thompson, L. F., Thorpe, M., Tobayama, S., Tolich, N., Tomura, T., Touramanis, C., Tsukamoto, T., Tzanov, M., Uchida, Y., Vagins, M. R., Vasseur, G., Vogelaar, R. B., Walter, C. W., Wark, D., Wascko, M. O., Weber, A., Wendell, R., Wilkes, R. J., Wilking, M. J., Wilson, J. R., Xin, T., Yamamoto, K., Yanagisawa, C., Yano, T., Yen, S., Yershov, N., Yokoyama, M., Zito, M., Asfandiyarov, Ruslan, Blondel, Alain, Bravar, Alessandro, Haegel, Leïla, Haesler, Alexis, Karadzhov, Yordan Ivanov, Korzenev, Alexander, Martin Mari, Carlos, Noah Messomo, Etam Albert, Ravonel Salzgeber, Melody, Rayner, Mark, Scantamburlo, Enrico, UAM. Departamento de Física Teórica, and Science and Technology Facilities Council (STFC)

Subjects
Physics potential, Proton, MINIBOONE, Physics::Instrumentation and Detectors, General Physics and Astronomy, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, law.invention, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), NONCONSERVATION, law, Long-baseline, Physics, J-PARC neutrino, T2K experiment, 3. Good health, High Energy Physics - Phenomenology, Physical Sciences, SYMMETRIES, Neutrino, SUPER-KAMIOKANDE, Particle physics, Neutrino oscillation, Cherenkov detector, 530 Physics, Physics, Multidisciplinary, CONSERVATION, FOS: Physical sciences, Proton Synchrotron, ddc:500.2, MASS, Hyper-Kamiokande, Physics and Astronomy (all), 0103 physical sciences, 010306 general physics, DETECTOR, Science & Technology, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Física, MODEL, CP-VIOLATION, Physics::Accelerator Physics, High Energy Physics::Experiment, J-PARC, Lepton
Abstract

Artículo escrito por muchos autores, sólo se referencian el primero, los autores que firman como Universidad Autónoma de Madrid y el grupo de colaboración en el caso de que aparezca en el artículo, Hyper-Kamiokande will be a next-generation underground water Cherenkov detector with a total (fiducial) mass of 0.99 (0.56) million metric tons, approximately 20 (25) times larger than that of Super-Kamiokande. One of the main goals of Hyper-Kamiokande is the study of CP asymmetry in the lepton sector using accelerator neutrino and anti-neutrino beams. In this paper, the physics potential of a long-baseline neutrino experiment using the Hyper- Kamiokande detector and a neutrino beam from the J-PARC proton synchrotron is presented. The analysis uses the framework and systematic uncertainties derived from the ongoing T2K experiment. With a total exposure of 7.5 MW ×107 s integrated proton beam power (corresponding to 1.56 × 1022 protons on target with a 30 GeV proton beam) to a 2.5° off-axis neutrino beam, it is expected that the leptonic CP phase δCP can be determined to better than 19 degrees for all possible values of δCP, and CP violation can be established with a statistical significance of more than 3 σ (5 σ) for 76% (58%) of the δCP parameter space. Using both νeappearance and νμ disappearance data, the expected 1 σ uncertainty of sin2 Θ23 is 0.015(0.006) for sin2 Θ23= 0.5(0.45), This work was supported by a MEXT Grant-in-Aid for Scientific Research on Innovative Areas Number 25105004, titled “Unification and Development of the Neutrino Science Frontier.” In addition, the participation of individual researchers has been further supported by funds from JSPS, Japan; the European Union ERC-207282, H2020 RISE-GA644294-JENNIFER, and H2020 RISE-GA641540-SKPLUS; RSF, RFBR, and MES, Russia; and JSPS and RFBR under the Japan–Russia Research Cooperative Program

Published
2015

30. Search for Neutrinos from Annihilation of Captured Low-Mass Dark Matter Particles in the Sun by Super-Kamiokande

Author

K. Iyogi, R. A. Wendell, A. T. Suzuki, J. F. Martin, Y. Kuno, K. Kaneyuki, Atsushi Takeda, T. Sekiguchi, S. Berkman, A. Minamino, T. Nakadaira, Y. Takeuchi, John Hill, K. Ieki, Hirokazu Ishino, Makoto Sakuda, J. L. Raaf, Yasunari Suzuki, J. G. Learned, K. Choi, R. J. Wilkes, Kimihiro Okumura, K. S. Ganezer, S. N. Smith, Seiko Hirota, M. Miura, I. Kametani, T. Kikawa, E. Kearns, T. Tsukamoto, C. W. Walter, L. Labarga, K. Sakashita, T. Kobayashi, Yasuhiro Kishimoto, K. Nakamura, Takaaki Kajita, M. Koshiba, S. Matsuno, Masashi Yokoyama, Shigeki Tasaka, Takaaki Mori, M. Goldhaber, J. L. Stone, Y. Hayato, Yejin Zhang, S. Moriyama, C. Yanagisawa, T. Ishida, R. Tacik, Masayuki Nakahata, Yoshinori Haga, Hiroyuki Sekiya, K. Martens, K. Huang, T. Tomura, A. Kibayashi, T. Ishizuka, J. Kameda, S. Mine, Yoshitaka Itow, H. Okazawa, A. Konaka, Tsuyoshi Nakaya, Y. Fukuda, K. P. Lee, P. Mijakowski, T. J. Irvine, C. K. Jung, J. Imber, H.A. Tanaka, T. McLachlan, M. Ikeda, K. Nishijima, T. Akiri, M. J. Wilking, Kazuhiro Suzuki, Masato Shiozawa, Y. Choi, Song Chen, T. Hasegawa, M. R. Vagins, Yusuke Koshio, C. Bronner, Kate Scholberg, G. Mitsuka, S. Nakayama, T. Ishii, I. T. Lim, J. S. Jang, H. W. Sobel, W. R. Kropp, S. Tobayama, A. Himmel, Yuuki Nakano, S. B. Kim, J. Y. Kim, L. R. Sulak, M. B. Smy, P. de Perio, T. Yano, A. L. Renshaw, Yuichi Oyama, K. Abe, Y. Nishimura, N. Hong, Joshua Hignight, Y. Totsuka, Susumu Takahashi, T. Wongjirad, Ll. Marti, G. Carminati, and UAM. Departamento de Física Teórica

Subjects
Physics, Particle physics, Atmospheric neutrinos, Annihilation, Muon, Physics::Instrumentation and Detectors, Dark matter, General Physics and Astronomy, Física, Surrounding rock, Coupling (probability), Elastic scattering cross sections, Low mass, Upper limits, Nuclear physics, Weakly interacting massive particles, WIMP, Dark matter particles, High Energy Physics::Experiment, Neutrino, Super-Kamiokande
Abstract

Artículo escrito por muchos autores, sólo se referencian el primero, los autores que firman como Universidad Autónoma de Madrid y el grupo de colaboración en el caso de que aparezca en el artículo, Super-Kamiokande (SK) can search for weakly interacting massive particles (WIMPs) by detecting neutrinos produced from WIMP annihilations occurring inside the Sun. In this analysis, we include neutrino events with interaction vertices in the detector in addition to upward-going muons produced in the surrounding rock. Compared to the previous result, which used the upward-going muons only, the signal acceptances for light (few-GeV/c2-200-GeV/c2) WIMPs are significantly increased. We fit 3903 days of SK data to search for the contribution of neutrinos from WIMP annihilation in the Sun. We found no significant excess over expected atmospheric-neutrino background and the result is interpreted in terms of upper limits on WIMP-nucleon elastic scattering cross sections under different assumptions about the annihilation channel. We set the current best limits on the spin-dependent WIMP-proton cross section for WIMP masses below 200 GeV/c2 (at 10 GeV/c2, 1.49×10-39 cm2 for χχ→bb¯ and 1.31×10-40 cm2 for χχ→τ+τ- annihilation channels), also ruling out some fraction of WIMP candidates with spin-independent coupling in the few-GeV/c2 mass range, The Super-Kamiokande experiment was built and has been operated with funding from the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation

Published
2015

31. Test of Lorentz invariance with atmospheric neutrinos

Author

Susumu Takahashi, T. Wongjirad, H. Okazawa, C. K. Jung, Yuichi Oyama, K. Ieki, T. Ishii, K. Sakashita, Masato Shiozawa, Y. Choi, R. J. Wilkes, R. Yamaguchi, K. Abe, Hirokazu Ishino, M. Ikeda, T. J. Irvine, J. Kameda, P. Fernandez, P. Mijakowski, Kazuhiro Suzuki, K. Martens, Y. Nishimura, M. Goldhaber, Yejin Zhang, S. Matsuno, K. Iyogi, J. S. Jang, S. Moriyama, S. B. Kim, J. Y. Kim, M. Koshiba, Y. Takeuchi, C. Yanagisawa, N. Hong, A. Himmel, Masayuki Nakahata, K. P. Lee, Lawrence Sulak, Atsushi Takeda, Joshua Hignight, Yoshihiro Suzuki, Takaaki Mori, J. L. Stone, A. T. Suzuki, K. Kaneyuki, T. Sekiguchi, K. Nishijima, Kate Scholberg, J. F. Martin, T. Nakadaira, Shigeki Tasaka, A. Konaka, B. L. Hartfiel, John Hill, S. Mine, Makoto Sakuda, J. Gustafson, E. Kearns, Yusuke Suda, Masashi Yokoyama, P. de Perio, T. Yano, A. L. Renshaw, Takehisa Hasegawa, Yusuke Koshio, Kimihiro Okumura, C. W. Walter, S. N. Smith, T. Ishizuka, J. Imber, M. Miura, Tsuyoshi Nakaya, W. E. Keig, M. B. Smy, T. Akiri, G. Carminati, K. Tateishi, Y. Haga, Hiroyuki Sekiya, K. Choi, Ll. Marti, L. Labarga, T. Kobayashi, Yoshitaka Itow, Seiko Hirota, T. Kikawa, Y. Fukuda, Y. Kuno, S. Berkman, J. G. Learned, T. McLachlan, E. Richard, P. Weatherly, Takaaki Kajita, K. Connolly, A. Minamino, Yasuhiro Kishimoto, Y. Hayato, R. A. Wendell, Song Chen, H. K. Tanaka, Yuuki Nakano, H.A. Tanaka, V. Takhistov, H. W. Sobel, C. Bronner, M. R. Vagins, I. Kametani, R. Tacik, A. Murakami, G. Mitsuka, I. T. Lim, K. Huang, S. Nakayama, K. S. Ganezer, A. Kibayashi, T. Tsukamoto, T. Ishida, T. Yokozawa, W. R. Kropp, S. Tobayama, K. Nakamura, J. L. Raaf, M. J. Wilking, Koh Ueno, Y. Totsuka, T. Tomura, and UAM. Departamento de Física Teórica

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Lorentz transformation, High Energy Physics::Phenomenology, Isotropy, FOS: Physical sciences, Física, Lorentz covariance, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), symbols.namesake, Orders of magnitude (time), Standard-Model Extension, 0103 physical sciences, Range (statistics), symbols, High Energy Physics::Experiment, Neutrino, 010306 general physics, Neutrino oscillation
Abstract

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM, A search for neutrino oscillations induced by Lorentz violation has been performed using 4,438 live-days of Super-Kamiokande atmospheric neutrino data. The Lorentz violation is included in addition to standard three-flavor oscillations using the nonperturbative standard model extension (SME), allowing the use of the full range of neutrino path lengths, ranging from 15 to 12,800 km, and energies ranging from 100 MeV to more than 100 TeV in the search. No evidence of Lorentz violation was observed, so limits are set on the renormalizable isotropic SME coefficients in the eμ, μτ, and eτ sectors, improving the existing limits by up to 7 orders of magnitude and setting limits for the first time in the neutrino μτ sector of the SME, We would like to thank A. Kostelecky for his advice and support and we are grateful to J. S. Diaz for working closely with us to calculate and implement the Lorentz-violating oscillation probabilities. The authors gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. Super-K has been built and operated from funds provided by the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation. This work was partially supported by the Research Foundation of Korea (BK21 and KNRC), the Korean Ministry of Science and Technology, the National Science Foundation of China, the European Union FP7 (DS laguna-lbno PN- 284518 and ITN invisibles GA-2011-289442), the National Science and Engineering Research Council (NSERC) of Canada, and the Scinet and Westgrid consortia of Compute Canada

Published
2015

32. Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment

Author

K. Kaneyuki, K. Sakashita, K. Nakamura, T. Sekiguchi, M. Goldhaber, I. Kametani, C. K. Jung, W. R. Kropp, S. Tobayama, S. Moriyama, Yejin Zhang, T. J. Irvine, T. Ishii, R. A. Wendell, T. Tomura, Masayuki Nakahata, Yusuke Suda, Masato Shiozawa, Y. Choi, Y. Totsuka, Song Chen, Susumu Takahashi, M. Hartz, T. Wongjirad, R. Tacik, H. Okazawa, Atsushi Takeda, M. Ikeda, J. Imber, K. Ieki, A. T. Suzuki, T. Tsukamoto, J. L. Raaf, R. J. Wilkes, J. F. Martin, M. B. Smy, Xiao-yan Li, T. Nakadaira, C. W. Walter, T. Ishida, E. Richard, E. Kearns, C. Yanagisawa, Makoto Sakuda, Masashi Yokoyama, B. L. Hartfiel, Ll. Marti, Seiko Hirota, M. J. Wilking, T. Kikawa, K. Nishijima, C. Kachulis, T. Ishizuka, Y. Nishimura, L. R. Sulak, Kimihiro Okumura, Yuichi Oyama, Tsuyoshi Nakaya, Shigeki Tasaka, V. Takhistov, J. S. Jang, Hiroyuki Sekiya, N. Hong, J. L. Palomino, A. Himmel, T. Kayano, Yasuhiro Kishimoto, Joshua Hignight, Yoshihiro Suzuki, Y. Fukuda, K. Abe, L. Labarga, T. Kobayashi, A. Konaka, S. Berkman, Y. Kuno, Y. Takeuchi, P. de Perio, T. Hasegawa, A. L. Renshaw, K. Choi, Pablo Fernandez, K. Iyogi, Yusuke Koshio, K. Frankiewicz, M. Friend, T. Suzuki, Takaaki Kajita, C. Nantais, S. B. Kim, J. Y. Kim, A. Orii, H. W. Sobel, John Hill, K. Huang, A. Kibayashi, M. R. Vagins, I. T. Lim, J. G. Learned, H. K. Tanaka, Yoshitaka Itow, Takaaki Mori, J. L. Stone, Yuuki Nakano, M. Miura, K. S. Ganezer, H.A. Tanaka, G. Carminati, Y. Haga, S. N. Smith, P. Weatherly, C. Bronner, S. Nakayama, T. Yano, K. Martens, A. Minamino, S. Mine, M. Koshiba, S. Matsuno, J. Gustafson, J. Kameda, Hirokazu Ishino, P. Mijakowski, Z. Li, Kazuhiro Suzuki, Tomohiko Nakajima, Y. Hayato, Kate Scholberg, and UAM. Departamento de Física Teórica

Subjects
Physics, Particle physics, High Energy Physics::Phenomenology, Confidence levels, General Physics and Astronomy, Nucleon decays, Física, FOS: Physical sciences, State (functional analysis), Super-Kamiokande experiment, Invisible particle, High Energy Physics - Experiment, Nuclear physics, Massless particle, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Bound state, Particle, High Energy Physics::Experiment, Nucleon, Super-Kamiokande, Lepton
Abstract

Artículo escrito por muchos autores, sólo se referencian el primero, los autores que firman como Universidad Autónoma de Madrid y el grupo de colaboración en el caso de que aparezca en el artículo, Search results for nucleon decays p→e+X, p→μ+X, n→νγ (where X is an invisible, massless particle) as well as dinucleon decays np→e+ν, np→μ+ν, and np→τ+ν in the Super-Kamiokande experiment are presented. Using single-ring data from an exposure of 273.4 kton·yr, a search for these decays yields a result consistent with no signal. Accordingly, lower limits on the partial lifetimes of τp→e+X>7.9×1032yr, τp→μ+X>4.1×1032yr, τn→νγ>5.5×1032yr, τnp→e+ν>2.6×1032yr, τnp→μ+ν>2.2×1032yr, and τnp→τ+ν>2.9×1031yr at a 90% confidence level are obtained. Some of these searches are novel, The Super- Kamiokande experiment was built and has been operated with funding from the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation

Published
2015
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33. 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

34. Search for proton decay viap→νK+using260 kiloton·yeardata of Super-Kamiokande

Author

Shigeki Tasaka, E. Kearns, Y. Takeuchi, Masashi Yokoyama, K. Martens, S. Moriyama, M. Miyake, Yuichi Oyama, Masayuki Nakahata, T. Ishizuka, Tsuyoshi Nakaya, C. W. Walter, Takaaki Mori, Takaaki Kajita, K. Abe, A. T. Suzuki, K. P. Lee, K. S. Ganezer, J. L. Stone, L. Labarga, T. Kobayashi, T. Nakadaira, Makoto Sakuda, K. Sakashita, M. Dziomba, K. Choi, K. Ieki, T. Tsukamoto, Joshua Hignight, Yoshihiro Suzuki, Hiroyuki Sekiya, R. J. Wilkes, K. Iyogi, H. Kaji, H. W. Sobel, Y. Totsuka, J. Takeuchi, T. Wongjirad, I. Taylor, Y. Fukuda, H. Okazawa, T. Ishida, M. Goldhaber, C. Yanagisawa, S. B. Kim, J. Y. Kim, Song Chen, H. Sui, A. L. Renshaw, C. K. Jung, M. Ikeda, Masato Shiozawa, Y. Choi, Yoshitaka Itow, K. Nishijima, J. Kameda, J. Imber, T. Ishii, K. Connolly, Y. Hayato, Atsushi Takeda, P. Mijakowski, S. N. Smith, H. Zhang, S. Matsuno, R. A. Wendell, T. McLachlan, A. Kibayashi, Ll. Marti, John Hill, Yusuke Koshio, S. Nakayama, W. E. Keig, K. Kaneyuki, T. Sekiguchi, K. Bays, Justin Albert, Y. Kuno, J. S. Jang, T. Yokozawa, Y. Takenaga, M. Miura, J. L. Raaf, J. G. Learned, L. R. Sulak, M. B. Smy, Koh Ueno, Y. Obayashi, M. R. Vagins, W. R. Kropp, K. Nakamura, A. Murakami, G. Mitsuka, I. T. Lim, A. Minamino, K. Nishikawa, M. Koshiba, Ko Okumura, S. Mine, Takehisa Hasegawa, Hidetoshi Kubo, Hirokazu Ishino, Zishuo Yang, Kate Scholberg, and G. Carminati

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Proton, Proton decay, Super-Kamiokande, Lower limit
Abstract

We have searched for proton decay via p→νK+ using Super-Kamiokande data from April 1996 to February 2013, 260 kiloton•year exposure in total. No evidence for this proton decay mode is found. A lower limit of the proton lifetime is set to τ/B(p→νK+)>5.9×1033 years at 90% confidence level.

Published
2014

35. Performance of the MACRO streamer tube system in the search for magnetic monopoles

Author

S. Coutu, E. Kearns, A. Rainò, Np Longley, Lawrence Sulak, Mario Sitta, C. Gustavino, A. Marzari-Chiesa, C. Bemporad, G. Ludlam, C. Orth, V. Chiarella, C. W. Peck, F.J. Ronga, P. Monacelli, L. Patrizii, G. Mandrioli, V. Bisi, E. Lamanna, M. N. Mazziotta, M. Mittelbrunn, R. Baker, Marco Monteno, C. Bloise, M. Goretti, M. Severi, P. Fusco, C. Favuzzi, G. Osteria, S. Parlati, Andrea Carlo Marini, M. G. Castellano, F. Tassoni, G. Battistoni, S. Cecchini, Alec Habig, R.M. Heinz, Roberto Bellotti, C. W. Walter, A. Hawthorne, P. Serra-Lugaresi, R. Nolty, A. Corona, P. Guarnaccia, F. Guarino, Kael Hanson, L. Miller, D. Levin, C. Okada, H. G. Giannini, R. Steinberg, M. Spinetti, J. Reynoldson, Teresa Montaruli, D. G. Michael, Vincenzo Patera, F. Sartogo, C. Forti, C. Eane, M. De Vincenzi, N. D. Pignatano, F. Cafagna, M. J. Longo, Marco Grassi, G. Giacomelli, J. T. Hong, C. Satriano, Donato Nicolo, G. Auriemma, Gregory Tarle, A. A. Grillo, A. Baldini, P. Spinelli, I. De Mitri, S P Mikheyev, C. R. Bower, V. Valente, D. Martello, A. Sciubba, S. Petrera, V. Togo, Paolo Lipari, C. De Marzo, G. C. Barbarino, O. Palamara, M. Ambrosio, Fabrizio Cei, J. A. Musser, Severino Angelo Maria Bussino, Eugenio Scapparone, A. Di Credico, R. Antolini, G. de Cataldo, S. Kyriazopoulou, P. Pistilli, R. Pazzi, V. Popa, R. C. Webb, E. Iarocci, Maurizio Spurio, A. Surdo, D. Campana, M. Carboni, J. L. Stone, Barry C. Barish, L. Satta, H. Dekhissi, N. Giglietto, G. Mancarella, Kate Scholberg, R. Liu, M. Calicchio, U. Rubizzo, Halina Bilokon, O. Erriquez, Erik Katsavounidis, P. Bernardini, S. L. Mufson, A. Margiotta-Neri, A. Sanzgiri, Y. Lu, Ambrosio M., Antolini R., Auriemma G., Baker R., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bower C., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Castellano M., Cecchini S., Cei F., Chiarella V., Corona A., Coutu S., De Cataldo G., Dekhissi H., De Marzo C., De Mitri I., De Vincenzi M., Di Credico A., Erriquez O., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini H.G., Giglietto N., Goretti M., Grassi M., Grillo A., Guarino F., Guarnaccia P., Gustavino C., Habig A., Hanson K., Hawthorne A., Heinz R., Hong J.T., Iarocci E., Katsavounidis E., Kearns E., Kyriazopoulou S., Lamanna E., Eane C., Levin D.S., Lipari P., Liu R., Longley N.P., Longo M.J., Lu Y., Ludlam G., Mancarella G., Mandrioli G., Margiotta-Neri A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Mittelbrunn M., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Okada C., Orth C., Osteria G., Palamara O., Parlati S., Patera V., Patrizii L., Pazzi R., Peck C.W., Petrera S., Pignatano N.D., Pistilli P., Popa V., Raino A., Reynoldson J., Ronga F., Rubizzo U., Sanzgiri A., Sartogo F., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Serra-Lugaresi P., Severi M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Tassoni F., Togo V., Valente V., Walter C.W., Webb R., M., Ambrosio, R., Antolini, G., Auriemma, R., Baker, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, A., Corona, S., Coutu, G., De Cataldo, H., Dekhissi, C., De Marzo, DE MITRI, Ivan, M., De Vincenzi, A., Di Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, H. G., Giannini, N., Giglietto, M., Goretti, M., Grassi, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, A., Hawthorne, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Kyriazopoulou, E., Lamanna, C., Eane, D. S., Levin, P., Lipari, R., Liu, N. P., Longley, M. J., Longo, Y., Lu, G., Ludlam, Mancarella, Giovanni, G., Mandrioli, A., Margiotta Neri, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, M., Mittelbrunn, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, C., Okada, C., Orth, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, S., Petrera, N. D., Pignatano, P., Pistilli, V., Popa, A., Rainó, J., Reynoldson, F., Ronga, U., Rubizzo, A., Sanzgiri, F., Sartogo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, F., Tassoni, V., Togo, V., Valente, C. W., Walter, R., Webb, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Corona, A, Coutu, S, Decataldo, G, Dekhissi, H, Demarzo, C, Demitri, I, Devincenzi, M, Dicredico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Goretti, M, Grassi, M, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Hawthorne, A, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, R, Longley, Np, Longo, Mj, Lu, Y, Ludlam, G, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marini, A, Martello, D, Marzarichiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Mittelbrunn, M, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Okada, C, Orth, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Petrera, S, Pignatano, Nd, Pistilli, P, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rubizzo, U, Sanzgiri, A, Sartogo, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serralugaresi, P, Severi, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Tassoni, F, Togo, V, Valente, V, Walter, Cw, Webb, R., Barbarino, Giancarlo, and Guarino, Fausto

Subjects
Physics, Physics::Instrumentation and Detectors, High Energy Physics::Lattice, Detector, Magnetic monopole, Astronomy and Astrophysics, Cosmic ray, Time resolution, MACRO, Gran Sasso, Computational physics, Nuclear physics, Tube (fluid conveyance), Macro
Abstract

We describe the techniques chosen to search tor magnetic monopoles using the MACRO streamer tube sub-system. The hardware and the details of the analysis procedures will be discussed also. The results for slowly moving monopoles are reported from a first data taking period using only part of the detector. © 1995 Elsevier Science B.V. All rights reserved.

Published
1995

36. Nuclearite search with the MACRO detector at Gran Sasso

Author

M. Ambrosio, R. Antolini, C. Aramo, G. Auriemma, A. Baldini, G. C. Barbarino, B. C. Barish, G. Battistoni, R. Bellotti, C. Bemporad, H. Bilokon, V. Bisi, C. Bloise, C. Bower, S. Bussino, F. Cafagna, M. Calicchio, D. Campana, M. Carboni, M. Castellano, S. Cecchini, F. Cei, V. Chiarella, B. C. Choudhary, S. Coutu, L. D. Benedictis, G. D. Cataldo, H. Dekhissi, E. D. Marzo, J. Derkaoui, M. D. Vincenzi, A. D. Credico, O. Erriquez, C. Favuzzi, C. Forti, P. Fusco, G. Giacomelli, G. Giannini, N. Giglietto, M. Giorgini, M. Grassi, L. Gray, A. Grillo, F. Guarino, P. Guarnaccia, C. Gustavino, A. Habig, K. Hanson, R. Heinz, Y. Huang, E. Iarocci, E. Katsavounidis, E. Kearns, H. Kim, S. Kyriazopoulou, E. Lamanna, C. Lane, T. Lari, D. S. Levin, P. Lipari, N. P. Longley, M. J. Longo, F. Maaroufi, G. Mandrioli, S. Manzoor, A. Margiotta, A. Marini, A. Marzari Chiesa, M. N. Mazziotta, D. G. Michael, S. Mikheyev, L. Miller, P. Monacelli, T. Montaruli, M. Monteno, S. Mufson, J. Musser, D. Nicolo, C. Orth, G. Osteria, M. Ouchrif, O. Palamara, V. Patera, L. Patrizii, R. Pazzi, C. W. Peck, S. Petrera, P. Pistilli, V. Popa, V. Pugliese, A. Raino, A. Rastelli, J. Reynoldson, F. Ronga, U. Rubizzo, C. Satriano, L. Satta, E. Scapparone, K. Scholberg, A. Sciubba, P. Serra, M. Severi, M. Sioli, M. Sitta, P. Spinelli, M. Spinetti, M. Spurio, R. Steinberg, J. L. Stone, L. R. Sulak, A. Surdo, G. Tarle, V. Togo, D. Ugolotti, M. Vakili, C. W. Walter, R. Webb, BERNARDINI, Paolo, DE MITRI, Ivan, MANCARELLA, Giovanni, MARTELLO, Daniele, PERRONE, Lorenzo, M., Ambrosio, R., Antolini, C., Aramo, G., Auriemma, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, Bernardini, Paolo, H., Bilokon, V., Bisi, C., Bloise, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, M., Castellano, S., Cecchini, F., Cei, V., Chiarella, B. C., Choudhary, S., Coutu, L. D., Benedicti, G. D., Cataldo, H., Dekhissi, E. D., Marzo, DE MITRI, Ivan, J., Derkaoui, M. D., Vincenzi, A. D., Credico, O., Erriquez, C., Favuzzi, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Giorgini, M., Grassi, L., Gray, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, R., Heinz, Y., Huang, E., Iarocci, E., Katsavounidi, E., Kearn, H., Kim, S., Kyriazopoulou, E., Lamanna, C., Lane, T., Lari, D. S., Levin, P., Lipari, N. P., Longley, M. J., Longo, F., Maaroufi, Mancarella, Giovanni, G., Mandrioli, S., Manzoor, A., Margiotta, A., Marini, Martello, Daniele, A., Marzari Chiesa, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicolo, C., Orth, G., Osteria, M., Ouchrif, O., Palamara, V., Patera, L., Patrizii, R., Pazzi, C. W., Peck, Perrone, Lorenzo, S., Petrera, P., Pistilli, V., Popa, V., Pugliese, A., Raino, A., Rastelli, J., Reynoldson, F., Ronga, U., Rubizzo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra, M., Severi, M., Sioli, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarle, V., Togo, D., Ugolotti, M., Vakili, C. W., Walter, R., Webb, Ambrosio, M, Antolini, R, Aramo, C, Auriemma, G, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Castellano, M, Cecchini, S, Cei, F, Chiarella, V, Choudhary, Bc, Coutu, S, De Benedictis, L, De Cataldo, G, Dekhissi, H, De Marzo, E, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Erriquez, O, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Gray, L, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Huang, Y, Iarocci, E, Katsavounidis, E, Kearns, E, Kim, H, Kyriazopoulou, S, Lamanna, E, Lane, C, Lari, T, Levin, D, Lipari, P, Longley, Np, Longo, Mj, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Orth, C, Osteria, G, Ouchrif, M, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Pistilli, P, Popa, V, Pugliese, V, Raino, A, Rastelli, A, Reynoldson, J, Ronga, F, Rubizzo, U, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Severi, M, Sioli, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Ugolotti, D, Vakili, M, Walter, Cw, Webb, R., and M. Ambrosio, R. Antolini, C. Aramo, G. Auriemma, A. Baldini, G. C. Barbarino, B. C. Barish, G. Battistoni, R. Bellotti, C. Bemporad, P. Bernardini, H. Bilokon, V. Bisi, C. Bloise, C. Bower, S. Bussino, F. Cafagna, M. Calicchio, D. Campana, M. Carboni, M. Castellano, S. Cecchini, F. Cei, V. Chiarella, B. C. Choudhary, S. Coutu, L. De Benedictis, G. De Cataldo, H. Dekhissi, C. De Marzo, I. De Mitri, J. Derkaoui, M. De Vincenzi, A. Di Credico, O. Erriquez, C. Favuzzi, C. Forti, P. Fusco, G. Giacomelli, G. Giannini , N. Giglietto, M. Giorgini, M. Grassi, L. Gray, A. Grillo, F. Guarino, P. Guarnaccia, C. Gustavino, A. Habig, K. Hanson, R. Heinz, Y. Huang, E. Iarocci, E. Katsavounidis, E. Kearns, H. Kim, S. Kyriazopoulou, E. Lamanna, C. Lane, T. Lari, D. S. Levin, P. Lipari, N. P. Longley, M. J. Longo, F. Maarou, G. Mancarella, G. Mandrioli, S. Manzoor, A. Margiotta, A. Marini, D. Martello, A. Marzari-Chiesa, M. N. Mazziotta, D. G. Michael, S. Mikheyev, L. Miller, P. Monacelli, T. Montaruli, M. Monteno, S. Mufson, J. Musser, D. Nicolo, C. Orth, G. Osteria, M. Ouchrif, O. Palamara, V. Patera, L. Patrizii, R. Pazzi, C. W. Peck, L. Perrone, S. Petrera, P. Pistilli, V. Popa, V. Pugliese, A. Raino, A. Rastelli, J. Reynoldson, F. Ronga, U. Rubizzo, C. Satriano, L. Satta, E. Scapparone, K. Scholberg, A. Sciubba, P. Serra, M. Severi, M. Sioli, M. Sitta, P. Spinelli, M. Spinetti, M. Spurio, R. Steinberg, J. L. Stone, L. R. Sulak, A. Surdo, G. Tarlè, V. Togo, D. Ugolotti, M. Vakili, C. W. Walter, R. Webb

Subjects
Physics and Astronomy (miscellaneous), MACRO, Engineering (miscellaneous), Gran Sasso
Abstract

In this paper we present the results of a search for nuclearites in the penetrating cosmic radiation using the scintillator and track-etch subdetectors of the MACRO apparatus. The analyses cover the beta = v/c range at the detector depth (3700 hg/cm(2)) 10(-5) < beta < 1; for beta = 2 x 10(-3) the flux limit is 2.7 x 10(-16) cm(-2)s(-1)sr(-1) for an isotropic flux of nuclearites, and twice this value for a flux of downgoing nuclearites.

Published
2000

37. Atmospheric neutrino oscillations from upward throughgoing muon multiple scattering in MACRO

Author

M. Carboni, D. Campana, A. Surdo, M. Giorgini, Vincenzo Patera, G. Giannini, C. Bloise, E. Kearns, C. Forti, M. Spinetti, A. Sciubba, S. Cecchini, C. Favuzzi, A. Baldini, A. Rrhioua, G. Giacomelli, M. De Vincenzi, J. L. Stone, O. Palamara, B. C. Barish, N. Giglietto, Mario Sitta, R.M. Heinz, E. Iarocci, C. Satriano, A. Di Credico, Annarita Margiotta, L. R. Sulak, Gregory Tarle, C. Gustavino, S P Mikheyev, Ashavani Kumar, F. Loparco, S. Kyriazopoulou, G. de Cataldo, D. Bakari, A. Rainò, D. Levin, C. Bemporad, R. Caruso, R. C. Webb, E. Katsavounidis, C. Orth, Severino Angelo Maria Bussino, P. Serra, V. Popa, P. Bernardini, G. Mandrioli, Tommaso Chiarusi, M. Grassi, Yvonne Becherini, Fabrizio Cei, G. Sirri, C. W. Walter, M. Brigida, Michael J. Longo, Donato Nicolo, Giuseppe Osteria, Kate Scholberg, F. Cafagna, M. N. Mazziotta, D. Martello, Hyun-Chul Kim, A. Marzari-Chiesa, Marco Monteno, A. A. Grillo, Alec Habig, I. De Mitri, M. Cozzi, J. Derkaoui, Ioannis Katsavounidis, F. Maaroufi, G. C. Barbarino, P. Spinelli, Kael Hanson, P. Fusco, C. R. Bower, L. Perrone, Maximiliano Sioli, C. De Marzo, Eugenio Scapparone, R. Antolini, V. Togo, J. A. Musser, H. Dekhissi, Andrea Carlo Marini, Paolo Lipari, M. Vakili, Roberto Bellotti, G. Mancarella, R. Nolty, C. W. Peck, J. Reynoldson, Teresa Montaruli, R. Pazzi, S. Coutu, Frederic Jean Ronga, S. L. Mufson, B. C. Choudhary, Shahid Manzoor, D. G. Michael, S. Petrera, Maurizio Spurio, R. Steinberg, M. Ambrosio, V. Chiarella, M. Calicchio, Halina Bilokon, P. Monacelli, E. Lamanna, G Battistoni, C. E. Lane, L. Patrizii, Barbarino, Giancarlo, Ambrosio, M, Antolini, R, Bakari, D, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Becherini, Y, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bloise, C, Bower, C, Brigida, M, Bussino, Severino Angelo Maria, Cafagna, E, Calicchio, M, Campana, D, Carboni, M, Caruso, R, Cecchini, S, Cei, F, Chiarella, V, Chiarusi, T, Choudhary, Bc, Coutu, S, Cozzi, M, De Cataldo, G, Dekhissi, H, De Marzo, C, De Mitri, I, Derkaoui, J, De Vincenzi, M, Di Credico, A, Favuzzi, C, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Giorgini, M, Grassi, M, Grillo, A, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Iarocci, E, Katsavounidis, E, Katsavounidis, I, Kearns, E, Kim, H, Kumar, A, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Longo, Mj, Loparco, F, Maaroufi, F, Mancarella, G, Mandrioli, G, Manzoor, S, Margiotta, A, Marini, A, Martello, D, Marzari Chiesa, A, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Orth, C, Osteria, G, Palamara, O, Patera, V, Patrizii, L, Pazzi, R, Peck, Cw, Perrone, L, Petrera, S, Popa, V, Raino, A, Reynoldson, J, Ronga, F, Rrhioua, A, Satriano, C, Scapparone, E, Scholberg, K, Sciubba, A, Serra, P, Sioli, M, Sirri, G, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Vakili, M, Walter, Cw, Webb, R., Ambrosio M., Antolini R., Bakari D., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Becherini Y., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bloise C., Bower C., Brigida M., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Caruso R., Cecchini S., Cei F., Chiarella V., Chiarusi T., Choudhary B.C., Coutu S., Cozzi M., de Cataldo G., Dekhissi H., de Marzo C., de Mitri I., Derkaoui J., de Vincenzi M., di Credico A., Favuzzi C., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Giorgini M., Grassi M., Grillo A., Gustavino C., Habig A., Hanson K., Heinz R., Iarocci E., Katsavounidis E., Katsavounidis I., Kearns E., Kim H., Kumar A., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Longo M.J., Loparco F., Maaroufi F., Mancarella G., Mandrioli G., Manzoor S., Margiotta A., Marini A., Martello D., Marzari-Chiesa A., Mazziotta M.N., Michael D.G., Mikheyev S., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Orth C., Osteria G., Palamara O., Patera V., Patrizii L., Pazzi R., Peck C.W., Perrone L., Petrera S., Popa V., Raino A., Reynoldson J., Ronga F., Rrhioua A., Satriano C., Scapparone E., Scholberg K., Sciubba A., Serra P., Sioli M., Sirri G., Sitta M., Spinelli P., Spinetti M., Spurio M., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Vakili M., Walter C.W., Webb R., Bernardini, Paolo, Martello, Daniele, DE MITRI, Ivan, Mancarella, Giovanni, Perrone, Lorenzo, and Macro, Collaboration

Subjects
Astroparticle physics, Physics, Elastic scattering, Particle physics, Nuclear and High Energy Physics, Muon, Scattering, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, MACRO, Gran Sasso, High Energy Physics - Experiment, Massless particle, Nuclear physics, High Energy Physics - Experiment (hep-ex), Physique des particules élémentaires, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Lepton
Abstract

The energy of atmospheric neutrinos detected by MACRO was estimated using multiple coulomb scattering of upward throughgoing muons. This analysis allows a test of atmospheric neutrino oscillations, relying on the distortion of the muon energy distribution. These results have been combined with those coming from the upward throughgoing muon angular distribution only. Both analyses are independent of the neutrino flux normalization and provide strong evidence, above the 4 sigma level, in favour of neutrino oscillations., 10 pages, 7 figures, submitted to Physics Letters B

Published
2003
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38. The Super-Kamiokande detector

Author

Kimihiro Okumura, Makoto Sakuda, B. K. Kim, S. Fukuda, K. Martens, S. Moriyama, Toshio Suzuki, Todd Haines, S. B. Boyd, M. L. Chen, T. Hasegawa, Z. Conner, M. Kitaguchi, K. Nishikawa, K. S. Ganezer, Alec Habig, M. Earl, B. Viren, J. Kameda, M. Koga, H. Okazawa, R. W. Ellsworth, A. Okada, M. Takahashi, J. S. George, K. Ishihara, Atsumu Suzuki, T. Inagaki, Shoichi Yamada, Takaaki Kajita, S. Matsuno, T. Iwashita, K. Fujita, H. G. Berns, M. Ishitsuka, S. Desai, Koji Nakamura, M. Miura, Y. Ichikawa, Mikio Morii, E. Guillian, C. K. Jung, M. Takahata, H. Nishihama, J. Hsu, K. Ito, Toshio Namba, D. Kielczewska, T. Ishii, Kunio Inoue, S. Nakayama, John G. Learned, I. Kato, M. Etoh, I. Nishiyama, T. Futagami, A. L. Stachyra, K. Miyano, C. Saji, Y. Hatakeyama, T. Hayakawa, H. Maesaka, R. A. Doyle, Florian Goebel, M. B. Smy, J. L. Stone, D. W. Liu, David William Casper, E. Ichihara, T. Hashimoto, A. K. Ichikawa, C. Yanagisawa, K. Nishijima, S. Hatakeyama, M. Kohama, Akira Hasegawa, G. W. Sullivan, Henry W. Sobel, K. Nitta, Y. Kobayashi, A. Sakai, M. Takita, M. Ackerman, Frederick Reines, L. R. Price, J. Shirai, W. Wang, T. Horiuchi, H. Takeda, V. J. Stenger, M. Masuzawa, E. Sharkey, Minoru Yoshida, Yoshitaka Itow, D. Turcan, S. Inaba, N. Sakurai, T. Takayama, Y. Kanaya, M. Kirisawa, R. Svoboda, M. Koike, J. Hill, Shuji Yamamoto, A. Kusano, K. Higuchi, Hiroaki Nishimura, Masaya Hasegawa, Y. Watanabe, K. Kaneyuki, T. Kobayashi, R. Sanford, Osamu Sasaki, Magdalena Malek, Y. Kajiyama, A. Kibayashi, L. R. Sulak, W. Doki, S. Tasaka, T. Toshito, W. E. Keig, Y. Nagashima, H. Fujiyasu, J. A. Goodman, J. T. Hong, Y. Takeuchi, F. Tsushima, C. W. Walter, Soo-Bong Kim, S. Kasuga, Y. Fukuda, E. Kearns, Y. Totsuka, M. Koshiba, Hyosun Kim, C. McGrew, Yoshihiro Suzuki, K. Kobayashi, M. Nemoto, D. Kerr, T. Maruyama, Takashi Yamaguchi, M. D. Messier, S. Echigo, T. Kato, C. Mitsuda, P. G. Halverson, R. J. Wilkes, U. Golebiewska, K. K. Young, S. Mine, Y. Obayashi, Y. Gando, E. Blaufuss, Junichi Kanzaki, C. Mauger, J. Yoo, Masato Shiozawa, T. Barszczak, T. Oyabu, A. Suzuki, Tsuyoshi Nakaya, Masayuki Nakahata, Hirokazu Ishino, L. Wai, M. Oketa, J. W. Flanagan, Hiroshi Ogawa, M. R. Vagins, H. Kobayashi, W. Gajewski, Kate Scholberg, W. R. Kropp, Y. Oyama, Y. Hayato, T. Iwamoto, and Yusuke Koshio

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Cherenkov detector, Solar neutrino, High Energy Physics::Phenomenology, T2K experiment, law.invention, Neutrino detector, law, High Energy Physics::Experiment, Neutrino astronomy, Neutrino, Super-Kamiokande, Neutrino oscillation, Instrumentation
Abstract

Super-Kamiokande is the world's largest water Cherenkov detector, with net mass 50,000 tons. During the period April, 1996 to July, 2001, Super-Kamiokande I collected 1678 live-days of data, observing neutrinos from the Sun, Earth's atmosphere, and the K2K long-baseline neutrino beam with high efficiency. These data provided crucial information for our current understanding of neutrino oscillations, as well as setting stringent limits on nucleon decay. In this paper, we describe the detector in detail, including its site, configuration, data acquisition equipment, online and offline software, and calibration systems which were used during Super-Kamiokande I.

Published
2003

39. Indications of Neutrino Oscillation in a 250 km Long-Baseline Experiment

Author

David William Casper, C. W. Walter, Makoto Sakuda, C. Yanagisawa, Toshio Namba, M. H. Ahn, K. Martens, W. R. Kropp, Nobuyuki Sakurai, H. W. Sobel, S. Fukuda, Atsumu Suzuki, H. Maesaka, Takehisa Hasegawa, T. Iwashita, Minoru Yoshida, Y. Fukuda, S. H. Lim, S. B. Boyd, K. Nishikawa, S. Mine, J. L. Stone, Y. Takeuchi, K. Kaneyuki, Yuichi Oyama, E. Kearns, T. Inagaki, Shinya Yamada, Y. Totsuka, E. J. Jeon, M. Kohama, Shoei Nakayama, Koji Nakamura, S. Matsuno, H. I. Jang, Kazumasa Miyano, J. Hill, C. K. Jung, Masaya Hasegawa, M. Miura, S. B. Kim, Tomoyuki Maruyama, J. H. Choi, D. Kielczewska, Hwangseo Park, I. Kato, John G. Learned, Itsuo Nakano, L. R. Sulak, T. Ishida, A. Obayashi, E. Sharkey, Susumu Noda, H. C. Bhang, T. Ishii, N. Tamura, M. Y. Pac, Yasunari Suzuki, C. O. Kim, N. Sasao, J. S. Jang, H. Yokoyama, W. Gajewski, Kate Scholberg, Ken-ichiro Kobayashi, A. K. Ichikawa, T. Toshito, R. J. Wilkes, Shigetaka Moriyama, A. Kibayashi, J. Y. Kim, I. T. Lim, T. Hara, Shogo Nishiyama, J. Kameda, C. McGrew, M. Ishitsuka, H. So, Shigeki Aoki, J. Yoo, J. Zalipska, Takashi Kobayashi, A. Ikeda, Y. Hayato, A. L. Stachyra, Mark R. Vagins, Masato Shiozawa, Shoji Yamamoto, Tsuyoshi Nakaya, Y. Suga, F. Nakata, Beom Jun Kim, Yoshitaka Itow, Yusuke Koshio, T. Ooyabu, Masayuki Nakahata, Takaaki Kajita, C. Mauger, and A. Okada

Subjects
Physics, Tamura, Norio, Physics::Instrumentation and Detectors, Oscillation, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), K2K experiment, Measurements of neutrino speed, High Energy Physics::Experiment, 田村, 詔生, Neutrino, Neutrino oscillation, Charged current
Abstract

The K2K experiment observes indications of neutrino oscillation: a reduction of $\nu_\mu$ flux together with a distortion of the energy spectrum. Fifty-six beam neutrino events are observed in Super-Kamiokande (SK), 250 km from the neutrino production point, with an expectation of $80.1^{+6.2}_{-5.4}$. Twenty-nine one ring $\mu$-like events are used to reconstruct the neutrino energy spectrum, which is better matched to the expected spectrum with neutrino oscillation than without. The probability that the observed flux at SK is explained by statistical fluctuation without neutrino oscillation is less than 1%., Comment: 5 pages, 3 figures embedded, LaTeX with RevTeX style, accepted for publication in PRL on December 13, 2002

Published
2003

40. Determination of solar neutrino oscillation parameters using 1496 days of Super-Kamiokande-I data

Author

Masatoshi Koshiba, Takashi Kobayashi, M. Ishitsuka, Shoichi Yamada, Takaaki Kajita, A. Kibayashi, L. R. Sulak, Shantanu Desai, Y. Ichikawa, K. Kobayashi, M. D. Messier, Y. Totsuka, T. Shibata, K. Kaneyuki, M. Takita, J. Shirai, S. Tasaka, W. E. Keig, Atsumu Suzuki, M. Earl, D. W. Liu, John G. Learned, M. Etoh, R. Nishimura, Makoto Sakuda, G. W. Sullivan, A. L. Stachyra, K. Miyano, C. W. Walter, Y. Nagashima, S. Matsuno, E. Sharkey, S. Dazeley, Hyosun Kim, D. Takemori, R. Svoboda, G. Guillian, R. W. Ellsworth, C. McGrew, A. M. Gago, K. Martens, S. Moriyama, C. Saji, J. Kameda, J. L. Stone, David William Casper, S. Nakayama, Yoshihiro Suzuki, T. Ishii, Kunio Inoue, Yoshitaka Itow, M. L. Chen, D. Turč, Y. Obayashi, J. A. Goodman, C. Mitsuda, K. S. Ganezer, T. Inagaki, Y. Kajiyama, S. Hatakeyama, R. J. Wilkes, M. Goldhaber, Y. Gando, M. Koike, Toshio Namba, Henry W. Sobel, K. Nitta, M. Ackermann, Y. Fukuda, E. Kearns, B. Viren, Koji Nakamura, S. Mine, Kyoshi Nishijima, Masayuki Nakahata, K. Nishikawa, M. Miura, Y. Takeuchi, Todd Haines, M. B. Smy, S. C. Boyd, T. Ishizuka, S. Fukuda, A. K. Ichikawa, Minoru Yoshida, C. Yanagisawa, H. Okazawa, K. Ishihara, A. Suzuki, M. Kohama, T. Iwashita, J. Hill, A. Okada, N. Sakurai, H. G. Berns, Alec Habig, Y. Watanabe, Mikio Morii, E. Blaufuss, Tsuyoshi Nakaya, C. K. Jung, C. Mauger, T. Toshito, J. Yoo, D. Kielczewska, Magdalena Malek, T. Maruyama, Masato Shiozawa, I. Kato, T. Barszczak, H. Takeuchi, Y. Hatakeyama, S. B. Kim, W. R. Kropp, Y. Oyama, Y. Hayato, Yusuke Koshio, Takehisa Hasegawa, Hirokazu Ishino, M. R. Vagins, W. Gajewski, and Kate Scholberg

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Standard solar model, Solar neutrino, High Energy Physics::Phenomenology, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Neutrino detector, High Energy Physics::Experiment, Neutrino, GALLEX, Super-Kamiokande, Neutrino oscillation
Abstract

A number of different fits to solar neutrino mixing and mass square difference were performed using 1496 days of Super-Kamiokande-I's solar neutrino data. These data select two allowed areas at large neutrino mixing when combined with either the solar $^8$B flux prediction of the standard solar model or the SNO interaction rate measurements. A global fit combining SK data with the solar neutrino interaction rates measured by Homestake, SNO, Gallex/GNO and SAGE prefers a single allowed area, the Large Mixing Angle solution, at the 98.9% confidence level. The mass square difference $\Delta m^2$ between the two mass eigenstates ranges from about 3 to $19\times10^{-5}$eV$^2$, while the mixing angle $\theta$ is in the range of $\tan^2\theta\approx$0.25--0.65., Comment: 10 Pages, 4 figures, submitted to Physics Letters B

Published
2002

41. Search for Nucleon Decay vian→ν¯π0andp→ν¯π+in Super-Kamiokande

Author

G. Lopez, Song Chen, R. A. Wendell, A. Minamino, K. Ueshima, T. Iida, M. Vagins, H. Toyota, K. Iyogi, E. Thrane, Makoto Miura, Masayuki Nakahata, Justin Albert, S. B. Kim, K. Abe, S. Nakayama, J. Y. Kim, K. P. Lee, Y. Kuno, S. Mino, T. Tanaka, J. G. Learned, K. Kaneyuki, K. S. Ganezer, H. Kaji, M. Dziomba, Takaaki Mori, J. Schuemann, Y. Totsuka, R. J. Wilkes, Zishuo Yang, N. Tanimoto, T. Sekiguchi, K. Bays, C. Yanagisawa, K. Nishikawa, L. R. Sulak, Koji Nakamura, Kate Scholberg, T. Wongjirad, A. T. Suzuki, Atsushi Takeda, C. Regis, P. Mijakowski, T. Nakadaira, Koh Ueno, J. Kameda, C. K. Jung, J. L. Raaf, D. Kielczewska, K. Martens, Ll. Marti, S. Mine, E. Kearns, Makoto Sakuda, Y. Heng, Y. Shimizu, S. N. Smith, C. Ishihara, Minoru Yoshida, K. Nishijima, A. Kibayashi, M. Koshiba, Hirokazu Ishino, S. Matsuno, T. Yokozawa, K. Sakashita, Ko Okumura, T. Tsukamoto, I. Taylor, H. Zhang, Y. Takenaga, Y. Hayato, M. Goldhaber, J. S. Jang, Y. Kozuma, T. Ishii, L. Labarga, B. S. Yang, T. Kobayashi, W. R. Kropp, K. Connolly, Y. Obayashi, S. Yamada, T. Ishida, Y. Koshio, G. Mitsuka, I. T. Lim, Yoshihiro Suzuki, Henry W. Sobel, Shigetaka Moriyama, A. L. Renshaw, John Hill, W. E. Keig, Yoshitaka Itow, Yuichi Oyama, T. McLachlan, H. Okazawa, C. W. Walter, T. Kajita, Masashi Yokoyama, Hiroyuki Sekiya, Y. Fukuda, T. Ishizuka, Y. Takeuchi, Tsuyoshi Nakaya, M. B. Smy, Michael Litos, M. Ikeda, Masato Shiozawa, Y. Choi, T. Hasegawa, J. L. Stone, and Shigeki Tasaka

Subjects
Physics, Particle physics, Proton, Physics beyond the Standard Model, Higgs boson, General Physics and Astronomy, Neutron, Neutrino, Nucleon, Super-Kamiokande, Mixing (physics)
Abstract

2Although there is strong theoretical support that na-ture can be described by a grand uni ed theory (GUT) [1,2], there is currently no direct experimental evidence.One of the most powerful ways to test grand uni cationis to look for proton (or bound neutron) decay. MostGUTs have an unstable proton; in the absence of anobservation, setting experimental limits on the protonlifetime can provide useful constraints on the nature ofgrand uni ed theories. Observation, on the other hand,would be tantalizing evidence of new physics beyond theStandard Model.One of the more simple but interesting candidates forgrand uni cation is SO(10), where the Standard Model’sSU(3), SU(2), and U(1) are contained within the largergauge group. The class of models based on SO(10) uni- cation generally make predictions for neutrino massesand mixing that are broadly in accord with all knownneutrino mixing data [3, 4]. The minimal supersym-metric SO(10) model with a 126 Higgs eld describedin Ref. [3] is the particular motivation for the analysispresented here. In addition to predicting neutrino massand mixing in agreement with observations, it leaves R-parity unbroken, which guarantees the existence of stabledark matter. For some region of its allowed parameterspace, this model predicts that the dominant nucleon de-cay modes will be p! ˇ

Published
2014

42. Search for Trilepton Nucleon Decay viap→e+ννandp→μ+ννin the Super-Kamiokande Experiment

Author

A. T. Suzuki, J. F. Martin, T. Nakadaira, I. Kametani, Y. Totsuka, Susumu Takahashi, T. Akiri, P. Mijakowski, Makoto Sakuda, A. Minamino, B. L. Hartfiel, T. Wongjirad, T. Ishii, T. Hasegawa, M. Koshiba, W. R. Kropp, Kazuhiro Suzuki, S. Matsuno, S. Tobayama, Yusuke Suda, K. Sakashita, Hirokazu Ishino, Y. Hayato, P. Weatherly, J. S. Jang, E. Kearns, A. Himmel, K. Ieki, J. Imber, R. J. Wilkes, C. W. Walter, L. R. Sulak, Ll. Marti, K. Choi, Pablo Fernandez, J. L. Stone, Masayuki Nakahata, K. S. Ganezer, Yoshitaka Itow, M. Goldhaber, K. Kaneyuki, Y. Nishimura, G. Carminati, Koh Ueno, S. N. Smith, V. Takhistov, Yuichi Oyama, J. L. Raaf, C. Yanagisawa, C. K. Jung, Yejin Zhang, L. Labarga, T. Kobayashi, N. Hong, Masato Shiozawa, Y. Choi, Yuuki Nakano, R. Yamaguchi, Joshua Hignight, Kate Scholberg, T. Kajita, Shigeki Tasaka, T. Tsukamoto, Yoshihiro Suzuki, M. Ikeda, Y. Kishimoto, Hiroyuki Sekiya, Y. Kuno, Y. Fukuda, A. Konaka, K. Martens, Takaaki Mori, K. Nishijima, S. Mine, R. Tacik, Yusuke Koshio, J. Gustafson, P. de Perio, T. Yano, S. Berkman, Y. Takeuchi, T. Ishida, A. L. Renshaw, T. McLachlan, E. Richard, M. B. Smy, Koji Nakamura, K. Tateishi, Atsushi Takeda, H. Okazawa, T. Yokozawa, M. J. Wilking, Masashi Yokoyama, T. J. Irvine, Henry W. Sobel, Shigetaka Moriyama, Yoshinori Haga, T. Ishizuka, S. B. Kim, K. Abe, S. Nakayama, J. Y. Kim, Tsuyoshi Nakaya, T. Tomura, K. Iyogi, John Hill, W. E. Keig, Kimihiro Okumura, Makoto Miura, Song Chen, R. A. Wendell, T. Sekiguchi, J. Kameda, K. Huang, A. Kibayashi, H.A. Tanaka, Seiko Hirota, T. Kikawa, M. Vagins, C. Bronner, J. G. Learned, H. K. Tanaka, K. Connolly, A. Murakami, G. Mitsuka, I. T. Lim, and K. P. Lee

Subjects
Physics, Nuclear physics, Particle physics, General Physics and Astronomy, Grand Unified Theory, Nucleon, Super-Kamiokande
Abstract

The trilepton nucleon decay modes p→e+νν and p→μ+νν violate |Δ(B-L)| by two units. Using data from a 273.4 kt yr exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of τp→e+νν>1.7×10(32) years and τp→μ+νν>2.2×10(32) years at a 90% confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.

Published
2014

43. Search for trilepton nucleon decay via p→e+νν and p→μ+νν in the Super-Kamiokande experiment

Author

V, Takhistov, K, Abe, Y, Haga, Y, Hayato, M, Ikeda, K, Iyogi, J, Kameda, Y, Kishimoto, M, Miura, S, Moriyama, M, Nakahata, Y, Nakano, S, Nakayama, H, Sekiya, M, Shiozawa, Y, Suzuki, A, Takeda, H, Tanaka, T, Tomura, K, Ueno, R A, Wendell, T, Yokozawa, T, Irvine, T, Kajita, I, Kametani, K, Kaneyuki, K P, Lee, T, McLachlan, Y, Nishimura, E, Richard, K, Okumura, L, Labarga, P, Fernandez, S, Berkman, H A, Tanaka, S, Tobayama, J, Gustafson, E, Kearns, J L, Raaf, J L, Stone, L R, Sulak, M, Goldhaber, G, Carminati, W R, Kropp, S, Mine, P, Weatherly, A, Renshaw, M B, Smy, H W, Sobel, K S, Ganezer, B L, Hartfiel, J, Hill, W E, Keig, N, Hong, J Y, Kim, I T, Lim, T, Akiri, A, Himmel, K, Scholberg, C W, Walter, T, Wongjirad, T, Ishizuka, S, Tasaka, J S, Jang, J G, Learned, S, Matsuno, S N, Smith, T, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, K, Nakamura, Y, Oyama, K, Sakashita, T, Sekiguchi, T, Tsukamoto, A T, Suzuki, Y, Takeuchi, C, Bronner, S, Hirota, K, Huang, K, Ieki, T, Kikawa, A, Minamino, A, Murakami, T, Nakaya, K, Suzuki, S, Takahashi, K, Tateishi, Y, Fukuda, K, Choi, Y, Itow, G, Mitsuka, P, Mijakowski, J, Hignight, J, Imber, C K, Jung, C, Yanagisawa, H, Ishino, A, Kibayashi, Y, Koshio, T, Mori, M, Sakuda, R, Yamaguchi, T, Yano, Y, Kuno, R, Tacik, S B, Kim, H, Okazawa, Y, Choi, K, Nishijima, M, Koshiba, Y, Suda, Y, Totsuka, M, Yokoyama, K, Martens, Ll, Marti, M R, Vagins, J F, Martin, P, de Perio, A, Konaka, M J, Wilking, S, Chen, Y, Zhang, K, Connolly, and R J, Wilkes

Abstract

The trilepton nucleon decay modes p→e+νν and p→μ+νν violate |Δ(B-L)| by two units. Using data from a 273.4 kt yr exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of τp→e+νν1.7×10(32) years and τp→μ+νν2.2×10(32) years at a 90% confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.

Published
2014

44. Search for Dinucleon Decay into Kaons in Super-Kamiokande

Author

T. Tsukamoto, A. T. Suzuki, T. Nakadaira, Makoto Sakuda, Masato Shiozawa, Y. Choi, Minoru Yoshida, B. S. Yang, T. Ishida, M. Ikeda, Haoxiong Zhang, S. Hazama, R. Terri, T. Hasegawa, T. Ishizuka, K. Sakashita, Y. Takenaga, C. McGrew, Yoshihiro Suzuki, M. Miura, N. Tamura, Takaaki Mori, Y. Totsuka, T. Wongjirad, J. L. Stone, Ken-ichiro Kobayashi, Koji Nakamura, Henry W. Sobel, K. Iyogi, Y. Takeuchi, B. Henning, M. Goldhaber, J. P. Cravens, Shigeki Tasaka, E. Thrane, N. Tanimoto, K. Ueshima, T. Kajita, A. Kibayashi, Shigetaka Moriyama, Yoshitaka Itow, T. Ishii, H. Kaji, J. S. Jang, Tsutomu Yokozawa, T. McLachlan, Hiroshi Watanabe, M. B. Smy, K. Connolly, Zishuo Yang, Kate Scholberg, Michael Litos, Atsushi Takeda, C. W. Walter, John Hill, Justin Albert, H. Okazawa, Y. Kuno, T. Kobayashi, G. Mitsuka, S. B. Kim, J. Y. Kim, R. J. Wilkes, S. Mino, Hirokazu Ishino, I. T. Lim, W. E. Keig, Masashi Yokoyama, David William Casper, M. Vagins, K. Kaneyuki, H. Nishino, H. Ogawa, Y. Shimizu, J. G. Learned, Yuichi Oyama, M. Dziomba, K. Nishijima, K. Nishikawa, Y. Kozuma, K. Abe, C. Ishihara, Masayuki Nakahata, S. Mine, Tsuyoshi Nakaya, M. Koshiba, S. Matsuno, Tetsuya S. Tanaka, Ko Okumura, Y. Hayato, L. R. Sulak, K. S. Ganezer, G. Lopez, Yusuke Koshio, Koh Ueno, A. Minamino, C. Yanagisawa, S. Nakayama, R. A. Wendell, J. Kameda, P. Mijakowski, E. Kearns, T. Sekiguchi, K. Bays, Hiroyuki Sekiya, Y. Fukuda, Y. Heng, Frédéric Dufour, Song Chen, T. Iida, H. Toyota, C. Regis, C. K. Jung, J. L. Raaf, D. Kielczewska, Y. Watanabe, Y. Yokosawa, Y. Obayashi, W. R. Kropp, and S. Yamada

Subjects
Physics, Particle physics, Bound state, General Physics and Astronomy, Atmospheric neutrino, Super-Kamiokande, Lower limit
Abstract

A search for the dinucleon decay $pp\ensuremath{\rightarrow}{K}^{+}{K}^{+}$ has been performed using $91.6\text{ }\text{ }\mathrm{kton}\ifmmode\cdot\else\textperiodcentered\fi{}\text{yr}$ data from Super-Kamiokande-I. This decay provides a sensitive probe of the $R$-parity-violating parameter ${{\ensuremath{\lambda}}_{112}}^{\ensuremath{'}\ensuremath{'}}$. A boosted decision tree analysis found no signal candidates in the data. The expected background was $0.28\ifmmode\pm\else\textpm\fi{}0.19$ atmospheric neutrino induced events and the estimated signal detection efficiency was $12.6%\ifmmode\pm\else\textpm\fi{}3.2%$. A lower limit of $1.7\ifmmode\times\else\texttimes\fi{}{10}^{32}\text{ }\text{ }\text{years}$ has been placed on the partial lifetime of the decay $^{16}\mathrm{O}\ensuremath{\rightarrow}^{14}\mathrm{C}{K}^{+}{K}^{+}$ at 90% C.L. A corresponding upper limit of $7.8\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}$ has been placed on the parameter ${{\ensuremath{\lambda}}_{112}}^{\ensuremath{'}\ensuremath{'}}$.

Published
2014

45. Limits on sterile neutrino mixing using atmospheric neutrinos in Super-Kamiokande

Author

E. Richard, Atsushi Takeda, T. Tomura, J. S. Jang, H. Okazawa, A. Minamino, A. Himmel, John Hill, S. Moriyama, Yasuhiro Kishimoto, Masayuki Nakahata, A. T. Suzuki, M. Koshiba, J. F. Martin, K. Martens, Y. Takeuchi, T. Nakadaira, W. E. Keig, Y. Nishimura, S. Matsuno, Makoto Sakuda, Yuichi Oyama, K. Sakashita, C. Yanagisawa, Song Chen, K. P. Lee, J. L. Raaf, N. Hong, Yoshitaka Itow, E. Kearns, H. W. Sobel, Yuuki Nakano, T. Tsukamoto, M. Miura, R. Yamaguchi, K. Abe, Masashi Yokoyama, Joshua Hignight, T. McLachlan, K. Nishijima, Yoshihiro Suzuki, K. Choi, Pablo Fernandez, Takaaki Mori, M. Goldhaber, Yejin Zhang, T. Ishida, T. Ishizuka, C. W. Walter, I. Kametani, P. de Perio, T. Yano, Tsuyoshi Nakaya, Y. Totsuka, Susumu Takahashi, C. K. Jung, B. L. Hartfiel, S. Berkman, T. Akiri, J. L. Stone, Hiroyuki Sekiya, A. L. Renshaw, K. Connolly, Y. Fukuda, T. Wongjirad, Kimihiro Okumura, Masato Shiozawa, Y. Choi, Takaaki Kajita, K. Kaneyuki, Shigeki Tasaka, K. Ieki, M. Ikeda, M. J. Wilking, Y. Haga, R. J. Wilkes, P. Weatherly, T. Sekiguchi, S. B. Kim, J. Y. Kim, H.A. Tanaka, T. Ishii, R. Tacik, C. Bronner, J. G. Learned, S. N. Smith, W. R. Kropp, S. Tobayama, K. Nakamura, T. J. Irvine, K. Tateishi, Yusuke Suda, H. K. Tanaka, J. Imber, M. B. Smy, Ll. Marti, A. Konaka, K. Huang, A. Kibayashi, Yusuke Koshio, M. R. Vagins, A. Murakami, Seiko Hirota, T. Kikawa, G. Mitsuka, I. T. Lim, Y. Hayato, Y. Kuno, R. A. Wendell, L. Labarga, T. Kobayashi, G. Carminati, K. Iyogi, S. Mine, J. Gustafson, Takehisa Hasegawa, Kate Scholberg, Hirokazu Ishino, K. S. Ganezer, S. Nakayama, J. Kameda, P. Mijakowski, Kazuhiro Suzuki, V. Takhistov, L. R. Sulak, Koh Ueno, T. Yokozawa, and UAM. Departamento de Física Teórica

Subjects
Nuclear and High Energy Physics, Particle physics, Sterile neutrino, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, 010306 general physics, Neutrino oscillation, Mixing (physics), Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Física, Solar neutrino problem, High Energy Physics - Phenomenology, High Energy Physics::Experiment, Neutrino, Atmospheric neutrino, Super-Kamiokande
Abstract

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM, We present limits on sterile neutrino mixing using 4,438 live-days of atmospheric neutrino data from the Super-Kamiokande experiment. We search for fast oscillations driven by an eV2-scale mass splitting and for oscillations into sterile neutrinos instead of tau neutrinos at the atmospheric mass splitting. When performing both of these searches we assume that the sterile mass splitting is large, allowing sin2(Δm2L/4E) to be approximated as 0.5, and we assume that there is no mixing between electron neutrinos and sterile neutrinos (|Ue4|2=0). No evidence of sterile oscillations is seen and we limit |Uμ4|2 to less than 0.041 and |Uτ4|2 to less than 0.18 for Δm2>0.1eV2 at the 90% C.L. in a 3+1 framework. The approximations that can be made with atmospheric neutrinos allow these limits to be easily applied to 3+N models, and we provide our results in a generic format to allow comparisons with other sterile neutrino models, The authors gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. Super-K has been built and operated from funds provided by the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation. This work was partially supported by the Research Foundation of Korea (BK21 and KNRC), the Korean Ministry of Science and Technology, the National Science Foundation of China, the European Union FP7 (DS laguna-lbno PN- 284518 and ITN invisibles GA-2011-289442) the National Science and Engineering Research Council (NSERC) of Canada, and the Scinet and Westgrid consortia of Compute Canada

Published
2014
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46. SolarB8and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data

Author

Y. Watanabe, J. Hill, M. Morii, T. Toshito, Minoru Yoshida, Y. Nagashima, J. A. Goodman, Y. Oyama, S. Tasaka, W. E. Keig, Y. Hayato, C. W. Walter, Atsumu Suzuki, Yusuke Koshio, B. Lee, K. Kaneyuki, Magdalena Malek, Soo-Bong Kim, M. B. Smy, Y. Fukuda, E. Kearns, Yoshitaka Itow, K. Nishikawa, M. Takita, L. R. Price, J. Shirai, M. Koike, H. Takeuchi, A. Suzuki, B. Viren, C. Saji, E. Sharkey, S. Dazeley, G. Guillian, S. Moriyama, M. Kohama, K. Ishihara, C. Mitsuda, C. McGrew, S. Matsuno, C. K. Jung, Tsuyoshi Nakaya, Heekyong Kim, H. Okazawa, D. Kielczewska, Yoshihiro Suzuki, C. Mauger, J. Yoo, Y. Totsuka, T. Ishii, M. Goldhaber, Kunio Inoue, Masato Shiozawa, Y. Takeuchi, R. J. Wilkes, T. Barszczak, U. Golebiewska, Alec Habig, M. Earl, D. W. Liu, R. Svoboda, J. Kameda, G. W. Sullivan, Takehisa Hasegawa, Masayuki Nakahata, Y. Gando, M. Ishitsuka, Hirokazu Ishino, Y. Hatakeyama, S. Mine, Shantanu Desai, Y. Ichikawa, A. L. Stachyra, K. Miyano, Takashi Kobayashi, W. R. Kropp, Tomoyuki Maruyama, R. W. Ellsworth, J. L. Stone, Henry W. Sobel, K. Nitta, H. Fujiyasu, E. Blaufuss, Kyoshi Nishijima, T. Inagaki, M. R. Vagins, Koji Nakamura, Masatoshi Koshiba, M. Miura, W. Gajewski, Kate Scholberg, A. Kibayashi, L. R. Sulak, T. Shibata, M. D. Messier, Makoto Sakuda, S. C. Boyd, T. Ishizuka, Y. Obayashi, K. Martens, John G. Learned, K. Kobayashi, Y. Kajiyama, Shoichi Yamada, Takaaki Kajita, M. Etoh, K. S. Ganezer, Todd Haines, D. Turcan, C. Yanagisawa, A. Okada, N. Sakurai, S. Nakayama, David William Casper, A. Sakai, and D. Takemori

Subjects
Physics, Sudbury Neutrino Observatory, Particle physics, Recoil, Solar neutrino, General Physics and Astronomy, Flux, Electron, Neutrino, Super-Kamiokande, Energy (signal processing)
Abstract

Solar neutrino measurements from 1258days of data from the Super-Kamiokande detector are presented. The measurements are based on recoil electrons in the energy range 5.0{endash}20.0MeV. The measured solar neutrino flux is 2.32{+-}0.03(stat){sup +0.08}{sub {minus}0.07}(syst){times}10{sup 6} cm{sup {minus}2}s{sup {minus}1} , which is 45.1{+-}0.5(stat ){sup +1.6}{sub {minus}1.4}(syst) % of that predicted by the BP2000 SSM. The day vs night flux asymmetry ({Phi}{sub n}{minus}{Phi}{sub d})/ {Phi}{sub average} is 0.033{+-}0.022(stat){sup +0.013}{sub {minus}0.012}(syst) . The recoil electron energy spectrum is consistent with no spectral distortion. For the hep neutrino flux, we set a 90% C.L.upper limit of 40{times}10{sup 3} cm{sup {minus}2}s{sup {minus}1} , which is 4.3times the BP2000 SSM prediction.

Published
2001

47. Constraints on Neutrino Oscillations Using 1258 Days of Super-Kamiokande Solar Neutrino Data

Author

Hirokazu Ishino, H. Takeuchi, K. Kaneyuki, Makoto Sakuda, M. Ishitsuka, K. Martens, K. Kobayashi, S. Matsuno, T. Shibata, Minoru Yoshida, David William Casper, Shantanu Desai, Y. Ichikawa, A. Sakai, Y. Takeuchi, J. L. Stone, E. Blaufuss, S. Nakayama, John G. Learned, Henry W. Sobel, K. Nitta, D. Turcan, R. W. Ellsworth, Kyoshi Nishijima, A. L. Stachyra, K. Miyano, Y. Watanabe, D. Takemori, M. Etoh, G. Guillian, S. Moriyama, T. Ishii, Kunio Inoue, Tomoyuki Maruyama, C. W. Walter, T. Inagaki, Y. Hatakeyama, M. Goldhaber, B. Viren, J. Hill, M. Morii, S. Tasaka, W. E. Keig, Shoichi Yamada, Takaaki Kajita, Koji Nakamura, T. Toshito, Soo-Bong Kim, M. Takita, L. R. Price, J. Shirai, C. Yanagisawa, D. W. Liu, Yoshitaka Itow, C. K. Jung, Y. Fukuda, E. Kearns, Todd Haines, Atsumu Suzuki, D. Kielczewska, M. Miura, Takehisa Hasegawa, E. Sharkey, G. W. Sullivan, S. Fukuda, M. Koike, S. Dazeley, Masayuki Nakahata, K. Nishikawa, C. McGrew, Magdalena Malek, M. R. Vagins, N. Sakurai, A. Okada, H. Okazawa, K. Ishihara, W. Gajewski, Kate Scholberg, Yoshihiro Suzuki, H. Fujiyasu, Y. Nagashima, Y. Kajiyama, J. Kameda, K. S. Ganezer, K. B. Lee, Alec Habig, Y. Totsuka, C. Saji, J. A. Goodman, M. Earl, Takashi Kobayashi, S. C. Boyd, T. Ishizuka, Masatoshi Koshiba, Y. Obayashi, A. Kibayashi, L. R. Sulak, C. Mitsuda, R. Svoboda, R. J. Wilkes, U. Golebiewska, K. K. Young, S. Mine, M. B. Smy, M. D. Messier, M. Kohama, Heekyong Kim, C. Mauger, J. Yoo, Masato Shiozawa, T. Barszczak, Y. Gando, W. R. Kropp, A. Suzuki, Tsuyoshi Nakaya, Y. Oyama, Y. Hayato, and Yusuke Koshio

Subjects
Physics, Particle physics, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, General Physics and Astronomy, Flux, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Super-Kamiokande, Neutrino oscillation, Zenith
Abstract

We report the result of a search for neutrino oscillations using precise measurements of the recoil electron energy spectrum and zenith angle variations of the solar neutrino flux from 1258 days of neutrino-electron scattering data in Super-Kamiokande. The absence of significant zenith angle variation and spectrum distortion places strong constraints on neutrino mixing and mass difference in a flux-independent way. Using the Super-Kamiokande flux measurement in addition, two allowed regions at large mixing are found., Comment: 6 pages, 4 figures, submitted to PRL

Published
2001

48. Tau Neutrinos Favored over Sterile Neutrinos in Atmospheric Muon Neutrino Oscillations

Author

C. Yanagisawa, Y. Takeuchi, S. Nakayama, H. Fujiyasu, Minoru Yoshida, S. Inaba, N. Sakurai, Y. Totsuka, K. S. Ganezer, M. Etoh, H. Takeuchi, C. Mitsuda, K. Kaneyuki, Y. Gando, C. W. Walter, R. J. Wilkes, U. Golebiewska, B. K. Kim, R. W. Ellsworth, Hirokazu Ishino, H. Okazawa, K. Kobayashi, K. K. Young, S. Fukuda, M. L. Chen, R. Svoboda, S. Mine, Todd Haines, M. Earl, T. Maruyama, T. Inagaki, J. Hill, Atsumu Suzuki, Koji Nakamura, Soo-Bong Kim, M. Takita, L. R. Price, J. Shirai, E. Blaufuss, A. Suzuki, M. Miura, Y. Fukuda, E. Kearns, Y. Obayashi, John G. Learned, Masatoshi Koshiba, A. Kibayashi, E. Sharkey, A. Okada, L. R. Sulak, J. L. Stone, G. W. Sullivan, Shoichi Yamada, Takaaki Kajita, C. Mauger, Masato Shiozawa, C. Saji, Henry W. Sobel, K. Nitta, T. Barszczak, J. Kameda, Y. Nagashima, Kyoshi Nishijima, K. Nishikawa, S. C. Boyd, T. Ishizuka, C. McGrew, Y. Watanabe, R. Sanford, M. D. Messier, J. A. Goodman, Yoshihiro Suzuki, M. Morii, K. Ishihara, T. Toshito, M. B. Smy, S. Matsuno, Osamu Sasaki, M. Kohama, Magdalena Malek, Ko Okumura, Takehisa Hasegawa, T. Ishii, Kunio Inoue, Alec Habig, Takashi Kobayashi, M. R. Vagins, W. Gajewski, Kate Scholberg, Masayuki Nakahata, G. Guillian, S. Moriyama, M. Takahashi, M. Goldhaber, M. Ishitsuka, Y. Ichikawa, A. L. Stachyra, K. Miyano, Y. Oyama, Y. Hayato, B. Viren, Yusuke Koshio, C. K. Jung, M. Takahata, D. Kielczewska, W. R. Kropp, Makoto Sakuda, K. Martens, David William Casper, A. Sakai, Yoshitaka Itow, M. Kirisawa, M. Koike, D. Takemori, S. Tasaka, W. E. Keig, and Y. Hatakeyama

Subjects
Physics, Sterile neutrino, Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, General Physics and Astronomy, Solar neutrino problem, High Energy Physics - Experiment, Cosmic neutrino background, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino astronomy
Abstract

The previously published atmospheric neutrino data did not distinguish whether muon neutrinos were oscillating into tau neutrinos or sterile neutrinos, as both hypotheses fit the data. Using data recorded in 1100 live-days of the Super-Kamiokande detector, we use three complementary data samples to study the difference in zenith angle distribution due to neutral currents and matter effects. We find no evidence favoring sterile neutrinos, and reject the hypothesis at the 99% confidence level. On the other hand, we find that oscillation between muon and tau neutrinos suffices to explain all the results in hand., Comment: 9 pages with 2 figures, submitted to PRL

Published
2000

49. The bearing capacity of saline ice sheets: centrifugal modelling

Author

Patricia J. Langhorne, K. J. L. Stone, and Colin C. Smith

Subjects
geography, Centrifuge, geography.geographical_feature_category, Sea ice, Geotechnical engineering, Bearing capacity, Ice sheet, Geotechnical Engineering and Engineering Geology, Geology, Civil and Structural Engineering
Abstract

Artificial sea ice sheets have been frozen in a centrifuge using novel techniques which yield reproducible ice growth rates and result in ice sheets of uniform thickness. The upper surface of these ice sheets has been subjected to an increasing load applied over a limited area, the maximum sustained load giving the bearing capacity at high inertial acceleration. Such centrifugal modelling techniques produce ice sheets with bearing capacities in agreement with existing field and laboratory data. In particular, the influence of indentor diameter and loading rate is examined and the centrifuge data are found to behave in the same manner as existing data with respect to both of these variables. All data are compared with a number of theoretical descriptions of bearing capacity, and these comparisons are discussed with regard to their impact on the applicability of the centrifuge modelling technique on ice penetration problems.Key words: centrifugal modelling, sea ice, bearing capacity.

Published
1999

50. Search for Proton Decay throughp→ν¯K+in a Large Water Cherenkov Detector

Author

C. W. Walter, C. Mauger, M. Koshiba, A. Okada, T. Kobayashi, Y. Hatakeyama, K. Nakamura, John G. Learned, T. Futagami, M. R. Vagins, Ko Okumura, J. Hill, V. J. Stenger, S. Kasuga, Y. Fukuda, Yuichi Oyama, G. W. Sullivan, T. Hayakawa, Ken-ichiro Kobayashi, A. T. Suzuki, Masayuki Nakahata, F. Tsushima, Akira Hasegawa, Y. Takeuchi, K. Ishihara, David William Casper, Makoto Sakuda, Kunio Inoue, S. Mine, A. Sakai, Nobuyuki Sakurai, L. R. Price, J. Shirai, Yoshitaka Itow, K. Martens, M. Kirisawa, Hiroshi Ogawa, J. S. George, Y. Kanaya, K. Nishikawa, M. Koike, H. W. Sobel, Yasunari Suzuki, M. Nemoto, J. L. Stone, K. Higuchi, Shigeki Tasaka, E. Sharkey, J. Kameda, S. Hatakeyama, Osamu Sasaki, Takehisa Hasegawa, Y. Watanabe, L. R. Sulak, R. Sanford, S. Inaba, M. B. Smy, Takaaki Kajita, H. Ishino, J. A. Goodman, Kazumasa Miyano, D. Takemori, M. Takahata, Y. Kobayashi, E. Blaufuss, S. Nakayama, K. Kaneyuki, C. Saji, M. Etoh, W. Doki, H. Okazawa, K. S. Ganezer, W. Gajewski, Kate Scholberg, D. Kielczewska, Y. Totsuka, C. McGrew, M. Earl, T. Ishii, Alec Habig, H. Fujiyasu, S. Matsuno, M. Koga, Minoru Yoshida, L. Wai, Tomoyuki Maruyama, T. J. Haines, Y. Obayashi, M. Takita, M. Miura, Takashi Yamaguchi, B. Viren, M. Takahashi, W. R. Kropp, S. Yamada, M. D. Messier, S. Echigo, R. J. Wilkes, K. K. Young, C. Yanagisawa, K. Nishijima, R. W. Ellsworth, A. Kibayashi, Y. Nagashima, H. Takeuchi, B. K. Kim, W. E. Keig, M. L. Chen, M. Goldhaber, Y. Hayato, T. Iwamoto, Yusuke Koshio, S. B. Kim, A. L. Stachyra, M. Kohama, C. K. Jung, Masato Shiozawa, T. Barszczak, E. Kearns, A. Suzuki, R. Svoboda, and Junichi Kanzaki

Subjects
Nuclear physics, Physics, Particle physics, Proton, Proton decay, Cherenkov detector, law, High Energy Physics::Phenomenology, General Physics and Astronomy, High Energy Physics::Experiment, Neutrino, Lower limit, law.invention
Abstract

We present results of a search for proton decays, $p\ensuremath{\rightarrow}\overline{\ensuremath{\nu}}{K}^{+}$, using data from a $33\mathrm{kt}\ifmmode \dot{}\else \.{}\fi{}\mathrm{yr}$ exposure of the Super-Kamiokande detector. Two decay modes of the kaon, ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\nu}}_{\ensuremath{\mu}}$ and ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{0}$, were studied. The data were consistent with the background expected from atmospheric neutrinos; therefore a lower limit on the partial lifetime of the proton $\ensuremath{\tau}/B(p\ensuremath{\rightarrow}\overline{\ensuremath{\nu}}{K}^{+})$ was found to be $6.7\ifmmode\times\else\texttimes\fi{}{10}^{32}\mathrm{years}$ at $90%$ confidence level.

Published
1999

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