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Your search keyword '"Ichikawa, Y."' showing total 24 results
Start Over Author "Ichikawa, Y." Journal physical review letters
24 results on '"Ichikawa, Y."'

1. Boulay et al. Reply

Author

Boulay, F., primary, Simpson, G. S., additional, Ichikawa, Y., additional, Kisyov, S., additional, Bucurescu, D., additional, Takamine, A., additional, Ahn, D. S., additional, Asahi, K., additional, Baba, H., additional, Balabanski, D. L., additional, Egami, T., additional, Fujita, T., additional, Fukuda, N., additional, Funayama, C., additional, Furukawa, T., additional, Georgiev, G., additional, Gladkov, A., additional, Hass, M., additional, Imamura, K., additional, Inabe, N., additional, Ishibashi, Y., additional, Kawaguchi, T., additional, Kawamura, T., additional, Kim, W., additional, Kobayashi, Y., additional, Kojima, S., additional, Kusoglu, A., additional, Lozeva, R., additional, Momiyama, S., additional, Mukul, I., additional, Niikura, M., additional, Nishibata, H., additional, Nishizaka, T., additional, Odahara, A., additional, Ohtomo, Y., additional, Ralet, D., additional, Sato, T., additional, Shimizu, Y., additional, Sumikama, T., additional, Suzuki, H., additional, Takeda, H., additional, Tao, L. C., additional, Togano, Y., additional, Tominaga, D., additional, Ueno, H., additional, Yamazaki, H., additional, Yang, X. F., additional, and Daugas, J. M., additional

Published
2021
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2. g Factor of the Zr99 ( 7/2+ ) Isomer: Monopole Evolution in the Shape-Coexisting Region

Author

Boulay, F., primary, Simpson, G. S., additional, Ichikawa, Y., additional, Kisyov, S., additional, Bucurescu, D., additional, Takamine, A., additional, Ahn, D. S., additional, Asahi, K., additional, Baba, H., additional, Balabanski, D. L., additional, Egami, T., additional, Fujita, T., additional, Fukuda, N., additional, Funayama, C., additional, Furukawa, T., additional, Georgiev, G., additional, Gladkov, A., additional, Hass, M., additional, Imamura, K., additional, Inabe, N., additional, Ishibashi, Y., additional, Kawaguchi, T., additional, Kawamura, T., additional, Kim, W., additional, Kobayashi, Y., additional, Kojima, S., additional, Kusoglu, A., additional, Lozeva, R., additional, Momiyama, S., additional, Mukul, I., additional, Niikura, M., additional, Nishibata, H., additional, Nishizaka, T., additional, Odahara, A., additional, Ohtomo, Y., additional, Ralet, D., additional, Sato, T., additional, Shimizu, Y., additional, Sumikama, T., additional, Suzuki, H., additional, Takeda, H., additional, Tao, L. C., additional, Togano, Y., additional, Tominaga, D., additional, Ueno, H., additional, Yamazaki, H., additional, Yang, X. F., additional, and Daugas, J. M., additional

Published
2020
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3. Is the 7/2(1)- isomer state of 43S spherical?

Author

Chevrier, R, Daugas, JM, Gaudefroy, L, Ichikawa, Y, Ueno, H, Hass, M, Haas, H, Cottenier, Stefaan, Aoi, N, Asahi, K, Balabanski, DL, Fukuda, N, Furukawa, T, Georgiev, G, Hayashi, H, Iijima, H, Inabe, N, Inoue, T, Ishihara, M, Ishii, Y, Kameda, D, Kubo, T, Nanao, T, Neyens, G, Ohnishi, T, Rajabali, MM, Suzuki, K, Takeda, H, Tsuchiya, M, Vermeulen, N, Watanabe, H, and Yoshimi, A

Subjects
ISLAND, NEUTRON-RICH NUCLEI, N=28 SHELL CLOSURE, Physics and Astronomy, BORDER, STABILITY, INVERSION, Nuclear Physics - Experiment, FRAGMENTATION, PYRITE, QUADRUPOLE-MOMENT, FE-57
Abstract

We report on the spectroscopic quadrupole moment measurement of the 7/2(1)(-) isomeric state in S-43(16)27 [E* = 320.5(5) keV, T-1/2 = 415(3) ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, vertical bar Q(s) vertical bar = 23(3) efm(2), is larger than that expected for a single-particle state. Shell model calculations using the modern SDPF-U interaction for this mass region reproduce remarkably well the measured vertical bar Q(s) vertical bar, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape.

Published
2011

4. Search for theΘ+Pentaquark via theπ−p→K−XReaction at1.92GeV/c

Author

Shirotori, K., primary, Takahashi, T. N., additional, Adachi, S., additional, Agnello, M., additional, Ajimura, S., additional, Aoki, K., additional, Bhang, H. C., additional, Bassalleck, B., additional, Botta, E., additional, Bufalino, S., additional, Chiga, N., additional, Evtoukhovitch, P., additional, Feliciello, A., additional, Fujioka, H., additional, Hiruma, F., additional, Honda, R., additional, Hosomi, K., additional, Ichikawa, Y., additional, Ieiri, M., additional, Igarashi, Y., additional, Imai, K., additional, Ishibashi, N., additional, Ishimoto, S., additional, Itahashi, K., additional, Iwasaki, R., additional, Joo, C. W., additional, Kim, M. J., additional, Kim, S. J., additional, Kiuchi, R., additional, Koike, T., additional, Komatsu, Y., additional, Kulikov, V. V., additional, Marcello, S., additional, Masumoto, S., additional, Matsuoka, K., additional, Miwa, K., additional, Moritsu, M., additional, Nagae, T., additional, Naruki, M., additional, Niiyama, M., additional, Noumi, H., additional, Ozawa, K., additional, Saito, N., additional, Sakaguchi, A., additional, Sako, H., additional, Samoilov, V., additional, Sato, M., additional, Sato, S., additional, Sato, Y., additional, Sawada, S., additional, Sekimoto, M., additional, Sugimura, H., additional, Suzuki, S., additional, Takahashi, H., additional, Takahashi, T., additional, Tamura, H., additional, Tanaka, T., additional, Tanida, K., additional, Tokiyasu, A. O., additional, Tomida, N., additional, Tsamalaidze, Z., additional, Ukai, M., additional, Yagi, K., additional, Yamamoto, T. O., additional, Yang, S. B., additional, Yonemoto, Y., additional, Yoon, C. J., additional, and Yoshida, K., additional

Published
2012
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5. Is the7/21−Isomer State ofS43Spherical?

Author

Chevrier, R., primary, Daugas, J. M., additional, Gaudefroy, L., additional, Ichikawa, Y., additional, Ueno, H., additional, Hass, M., additional, Haas, H., additional, Cottenier, S., additional, Aoi, N., additional, Asahi, K., additional, Balabanski, D. L., additional, Fukuda, N., additional, Furukawa, T., additional, Georgiev, G., additional, Hayashi, H., additional, Iijima, H., additional, Inabe, N., additional, Inoue, T., additional, Ishihara, M., additional, Ishii, Y., additional, Kameda, D., additional, Kubo, T., additional, Nanao, T., additional, Neyens, G., additional, Ohnishi, T., additional, Rajabali, M. M., additional, Suzuki, K., additional, Takeda, H., additional, Tsuchiya, M., additional, Vermeulen, N., additional, Watanabe, H., additional, and Yoshimi, A., additional

Published
2012
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6. Is the 7/2^<->_<1> isomer state of ^<43>S spherical?

Author

Chevrier, R., Daugas, J.M., Gaudefroy, L., Ichikawa, Y., Ueno, H., Hass, M., Haas, H., Cottenier, S., Aoi, N., Asahi, K., Balabanski, D.L., Fukuda, N., Furukawa, T., Georgiev, G., Hayashi, H., Iijima, H., Inabe, N., Inoue, T., Ishihara, M., Ishii, Y., Kameda, D., Kubo, T., Nanao, T., Neyens, G., Ohnishi, T., Rajabali, M.M., Suzuki, K., Takeda, H., Tsuchiya, M., Vermeulen, N., Watanabe, H., and Yoshimi, A.

Abstract

We report on the spectroscopic quadrupole moment measurement of the 7/2^_ isomeric state in ^_S_ [E^∗ =320.5(5) keV , T_=415(3) ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, ∣Q_s∣=23(3) efm^2 , is larger than that expected for a single-particle state. Shell model calculations using the modern SDPF-U interaction for this mass region reproduce remarkably well the measured ∣Q_s∣, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape.

Published
2012

7. Search forν¯efrom the Sun at Super-Kamiokande-I

Author

Gando, Y., primary, Fukuda, S., additional, Fukuda, Y., additional, Ishitsuka, M., additional, Itow, Y., additional, Kajita, T., additional, Kameda, J., additional, Kaneyuki, K., additional, Kobayashi, K., additional, Koshio, Y., additional, Miura, M., additional, Moriyama, S., additional, Nakahata, M., additional, Nakayama, S., additional, Namba, T., additional, Obayashi, Y., additional, Okada, A., additional, Ooyabu, T., additional, Saji, C., additional, Sakurai, N., additional, Shiozawa, M., additional, Suzuki, Y., additional, Takeuchi, H., additional, Takeuchi, Y., additional, Totsuka, Y., additional, Yamada, S., additional, Desai, S., additional, Earl, M., additional, Kearns, E., additional, Messier, M. D., additional, Stone, J. L., additional, Sulak, L. R., additional, Walter, C. W., additional, Goldhaber, M., additional, Barszczak, T., additional, Casper, D., additional, Gajewski, W., additional, Kropp, W. R., additional, Mine, S., additional, Liu, D. W., additional, Smy, M. B., additional, Sobel, H. W., additional, Vagins, M. R., additional, Gago, A., additional, Ganezer, K. S., additional, Hill, J., additional, Keig, W. E., additional, Ellsworth, R. W., additional, Tasaka, S., additional, Kibayashi, A., additional, Learned, J. G., additional, Matsuno, S., additional, Takemori, D., additional, Hayato, Y., additional, Ichikawa, A. K., additional, Ishii, T., additional, Kobayashi, T., additional, Maruyama, T., additional, Nakamura, K., additional, Oyama, Y., additional, Sakuda, M., additional, Yoshida, M., additional, Kohama, M., additional, Iwashita, T., additional, Suzuki, A. T., additional, Inagaki, T., additional, Kato, I., additional, Nakaya, T., additional, Nishikawa, K., additional, Haines, T. J., additional, Dazeley, S., additional, Hatakeyama, S., additional, Svoboda, R., additional, Blaufuss, E., additional, Chen, M. L., additional, Goodman, J. A., additional, Guillian, G., additional, Sullivan, G. W., additional, Turcan, D., additional, Scholberg, K., additional, Habig, A., additional, Ackermann, M., additional, Jung, C. K., additional, Martens, K., additional, Malek, M., additional, Mauger, C., additional, McGrew, C., additional, Sharkey, E., additional, Viren, B., additional, Yanagisawa, C., additional, Toshito, T., additional, Mitsuda, C., additional, Miyano, K., additional, Shibata, T., additional, Kajiyama, Y., additional, Nagashima, Y., additional, Nitta, K., additional, Takita, M., additional, Kim, H. I., additional, Kim, S. B., additional, Yoo, J., additional, Okazawa, H., additional, Ishizuka, T., additional, Etoh, M., additional, Hasegawa, T., additional, Inoue, K., additional, Ishihara, K., additional, Shirai, J., additional, Suzuki, A., additional, Koshiba, M., additional, Hatakeyama, Y., additional, Ichikawa, Y., additional, Koike, M., additional, Nishijima, K., additional, Ishino, H., additional, Morii, M., additional, Nishimura, R., additional, Watanabe, Y., additional, Kielczewska, D., additional, Berns, H. G., additional, Boyd, S. C., additional, Stachyra, A. L., additional, and Wilkes, R. J., additional

Published
2003
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8. Search for Supernova Relic Neutrinos at Super-Kamiokande

Author

Malek, M., primary, Morii, M., additional, Fukuda, S., additional, Fukuda, Y., additional, Ishitsuka, M., additional, Itow, Y., additional, Kajita, T., additional, Kameda, J., additional, Kaneyuki, K., additional, Kobayashi, K., additional, Koshio, Y., additional, Miura, M., additional, Moriyama, S., additional, Nakahata, M., additional, Nakayama, S., additional, Namba, T., additional, Okada, A., additional, Ooyabu, T., additional, Saji, C., additional, Sakurai, N., additional, Shiozawa, M., additional, Suzuki, Y., additional, Takeuchi, H., additional, Takeuchi, Y., additional, Totsuka, Y., additional, Yamada, S., additional, Desai, S., additional, Earl, M., additional, Kearns, E., additional, Messier, M. D., additional, Stone, J. L., additional, Sulak, L. R., additional, Walter, C. W., additional, Goldhaber, M., additional, Barszczak, T., additional, Casper, D., additional, Gajewski, W., additional, Kropp, W. R., additional, Mine, S., additional, Liu, D. W., additional, Smy, M. B., additional, Sobel, H. W., additional, Vagins, M. R., additional, Gago, A., additional, Ganezer, K. S., additional, Keig, W. E., additional, Ellsworth, R. W., additional, Tasaka, S., additional, Kibayashi, A., additional, Learned, J. G., additional, Matsuno, S., additional, Takemori, D., additional, Hayato, Y., additional, Ishii, T., additional, Kobayashi, T., additional, Maruyama, T., additional, Nakamura, K., additional, Obayashi, Y., additional, Oyama, Y., additional, Sakuda, M., additional, Yoshida, M., additional, Kohama, M., additional, Iwashita, T., additional, Suzuki, A. T., additional, Ichikawa, A., additional, Inagaki, T., additional, Kato, I., additional, Nakaya, T., additional, Nishikawa, K., additional, Haines, T. J., additional, Dazeley, S., additional, Hatakeyama, S., additional, Svoboda, R., additional, Blaufuss, E., additional, Goodman, J. A., additional, Guillian, G., additional, Sullivan, G. W., additional, Turcan, D., additional, Scholberg, K., additional, Habig, A., additional, Ackermann, M., additional, Hill, J., additional, Jung, C. K., additional, Martens, K., additional, Mauger, C., additional, McGrew, C., additional, Sharkey, E., additional, Viren, B., additional, Yanagisawa, C., additional, Toshito, T., additional, Mitsuda, C., additional, Miyano, K., additional, Shibata, T., additional, Kajiyama, Y., additional, Nagashima, Y., additional, Nitta, K., additional, Takita, M., additional, Kim, H. I., additional, Kim, S. B., additional, Yoo, J., additional, Okazawa, H., additional, Ishizuka, T., additional, Etoh, M., additional, Gando, Y., additional, Hasegawa, T., additional, Inoue, K., additional, Ishihara, K., additional, Shirai, J., additional, Suzuki, A., additional, Koshiba, M., additional, Hatakeyama, Y., additional, Ichikawa, Y., additional, Koike, M., additional, Nishijima, K., additional, Ishino, H., additional, Nishimura, R., additional, Watanabe, Y., additional, Kielczewska, D., additional, Berns, H. G., additional, Boyd, S. C., additional, Stachyra, A. L., additional, and Wilkes, R. J., additional

Published
2003
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9. Constraints on Neutrino Oscillations Using 1258 Days of Super-Kamiokande Solar Neutrino Data

Author

Fukuda, S., primary, Fukuda, Y., additional, Ishitsuka, M., additional, Itow, Y., additional, Kajita, T., additional, Kameda, J., additional, Kaneyuki, K., additional, Kobayashi, K., additional, Koshio, Y., additional, Miura, M., additional, Moriyama, S., additional, Nakahata, M., additional, Nakayama, S., additional, Okada, A., additional, Sakurai, N., additional, Shiozawa, M., additional, Suzuki, Y., additional, Takeuchi, H., additional, Takeuchi, Y., additional, Toshito, T., additional, Totsuka, Y., additional, Yamada, S., additional, Desai, S., additional, Earl, M., additional, Kearns, E., additional, Messier, M. D., additional, Scholberg, K., additional, Stone, J. L., additional, Sulak, L. R., additional, Walter, C. W., additional, Goldhaber, M., additional, Barszczak, T., additional, Casper, D., additional, Gajewski, W., additional, Kropp, W. R., additional, Mine, S., additional, Liu, D. W., additional, Price, L. R., additional, Smy, M. B., additional, Sobel, H. W., additional, Vagins, M. R., additional, Ganezer, K. S., additional, Keig, W. E., additional, Ellsworth, R. W., additional, Tasaka, S., additional, Kibayashi, A., additional, Learned, J. G., additional, Matsuno, S., additional, Takemori, D., additional, Hayato, Y., additional, Ishii, T., additional, Kobayashi, T., additional, Nakamura, K., additional, Obayashi, Y., additional, Oyama, Y., additional, Sakai, A., additional, Sakuda, M., additional, Kohama, M., additional, Suzuki, A. T., additional, Inagaki, T., additional, Nakaya, T., additional, Nishikawa, K., additional, Haines, T. J., additional, Blaufuss, E., additional, Dazeley, S., additional, Lee, K. B., additional, Svoboda, R., additional, Goodman, J. A., additional, Guillian, G., additional, Sullivan, G. W., additional, Turcan, D., additional, Habig, A., additional, Hill, J., additional, Jung, C. K., additional, Martens, K., additional, Malek, M., additional, Mauger, C., additional, McGrew, C., additional, Sharkey, E., additional, Viren, B., additional, Yanagisawa, C., additional, Mitsuda, C., additional, Miyano, K., additional, Saji, C., additional, Shibata, T., additional, Kajiyama, Y., additional, Nagashima, Y., additional, Nitta, K., additional, Takita, M., additional, Yoshida, M., additional, Kim, H. I., additional, Kim, S. B., additional, Yoo, J., additional, Okazawa, H., additional, Ishizuka, T., additional, Etoh, M., additional, Gando, Y., additional, Hasegawa, T., additional, Inoue, K., additional, Ishihara, K., additional, Maruyama, T., additional, Shirai, J., additional, Suzuki, A., additional, Koshiba, M., additional, Hatakeyama, Y., additional, Ichikawa, Y., additional, Koike, M., additional, Nishijima, K., additional, Fujiyasu, H., additional, Ishino, H., additional, Morii, M., additional, Watanabe, Y., additional, Golebiewska, U., additional, Kielczewska, D., additional, Boyd, S. C., additional, Stachyra, A. L., additional, Wilkes, R. J., additional, and Young, K. K., additional

Published
2001
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10. SolarB8and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data

Author

Fukuda, S., primary, Fukuda, Y., additional, Ishitsuka, M., additional, Itow, Y., additional, Kajita, T., additional, Kameda, J., additional, Kaneyuki, K., additional, Kobayashi, K., additional, Koshio, Y., additional, Miura, M., additional, Moriyama, S., additional, Nakahata, M., additional, Nakayama, S., additional, Okada, A., additional, Sakurai, N., additional, Shiozawa, M., additional, Suzuki, Y., additional, Takeuchi, H., additional, Takeuchi, Y., additional, Toshito, T., additional, Totsuka, Y., additional, Yamada, S., additional, Desai, S., additional, Earl, M., additional, Kearns, E., additional, Messier, M. D., additional, Scholberg, K., additional, Stone, J. L., additional, Sulak, L. R., additional, Walter, C. W., additional, Goldhaber, M., additional, Barszczak, T., additional, Casper, D., additional, Gajewski, W., additional, Kropp, W. R., additional, Mine, S., additional, Liu, D. W., additional, Price, L. R., additional, Smy, M. B., additional, Sobel, H. W., additional, Vagins, M. R., additional, Ganezer, K. S., additional, Keig, W. E., additional, Ellsworth, R. W., additional, Tasaka, S., additional, Kibayashi, A., additional, Learned, J. G., additional, Matsuno, S., additional, Takemori, D., additional, Hayato, Y., additional, Ishii, T., additional, Kobayashi, T., additional, Nakamura, K., additional, Obayashi, Y., additional, Oyama, Y., additional, Sakai, A., additional, Sakuda, M., additional, Kohama, M., additional, Suzuki, A. T., additional, Inagaki, T., additional, Nakaya, T., additional, Nishikawa, K., additional, Haines, T. J., additional, Blaufuss, E., additional, Dazeley, S., additional, Lee, K. B., additional, Svoboda, R., additional, Goodman, J. A., additional, Guillian, G., additional, Sullivan, G. W., additional, Turcan, D., additional, Habig, A., additional, Hill, J., additional, Jung, C. K., additional, Martens, K., additional, Malek, M., additional, Mauger, C., additional, McGrew, C., additional, Sharkey, E., additional, Viren, B., additional, Yanagisawa, C., additional, Mitsuda, C., additional, Miyano, K., additional, Saji, C., additional, Shibata, T., additional, Kajiyama, Y., additional, Nagashima, Y., additional, Nitta, K., additional, Takita, M., additional, Yoshida, M., additional, Kim, H. I., additional, Kim, S. B., additional, Yoo, J., additional, Okazawa, H., additional, Ishizuka, T., additional, Etoh, M., additional, Gando, Y., additional, Hasegawa, T., additional, Inoue, K., additional, Ishihara, K., additional, Maruyama, T., additional, Shirai, J., additional, Suzuki, A., additional, Koshiba, M., additional, Hatakeyama, Y., additional, Ichikawa, Y., additional, Koike, M., additional, Nishijima, K., additional, Fujiyasu, H., additional, Ishino, H., additional, Morii, M., additional, Watanabe, Y., additional, Golebiewska, U., additional, Kielczewska, D., additional, Boyd, S. C., additional, Stachyra, A. L., additional, Wilkes, R. J., additional, and Young, K. K., additional

Published
2001
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11. Tau Neutrinos Favored over Sterile Neutrinos in Atmospheric Muon Neutrino Oscillations

Author

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

Published
2000
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12. Observation of Coulomb-Assisted Nuclear Bound State of Ξ − – N 14 System

Author

Hayakawa, S. H., Agari, K., Ahn, J. K., Akaishi, T., Akazawa, Y., Ashikaga, S., Bassalleck, B., Bleser, S., Ekawa, H., Endo, Y., Fujikawa, Y., Fujioka, N., Fujita, M., Goto, R., Han, Y., Hasegawa, S., Hashimoto, T., Hayakawa, T., Hayata, E., Hicks, K., Hirose, E., Hirose, M., Honda, R., Hoshino, K., Hoshino, S., Hosomi, K., Hwang, S. H., Ichikawa, Y., Ichikawa, M., Imai, K., Inaba, K., Ishikawa, Y., Ito, H., Ito, K., Jung, W. S., Kanatsuki, S., Kanauchi, H., Kasagi, A., Kawai, T., Kim, M. H., Kim, S. H., Kinbara, S., Kiuchi, R., Kobayashi, H., Kobayashi, K., Koike, T., Koshikawa, A., Lee, J. Y., Ma, T. L., Matsumoto, S. Y., Minakawa, M., Miwa, K., Moe, A. T., Moon, T. J., Moritsu, M., Nagase, Y., Nakada, Y., Nakagawa, M., Nakashima, D., Nakazawa, K., Nanamura, T., Naruki, M., Nyaw, A. N. L., Ogura, Y., Ohashi, M., Oue, K., Ozawa, S., Pochodzalla, J., Ryu, S. Y., Sako, H., Sato, S., Sato, Y., Schupp, F., Shirotori, K., Soe, M. M., Soe, M. K., Sohn, J. Y., Sugimura, H., Suzuki, K. N., Takahashi, H., Takahashi, T., Takeda, T., Tamura, H., Tanida, K., Theint, A. M. M., Tint, K. T., Toyama, Y., Ukai, M., Umezaki, E., Watabe, T., Watanabe, K., Yamamoto, T. O., Yang, S. B., Yoon, C. S., Yoshida, J., Yoshimoto, M., Zhang, D. H., and Zhang, Z.

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13. Search for the Θ+ Pentaquark via the π- p → K-X Reaction at 1.92 GeV/c.

Author

Shirotori, K., Takahashi, T. N., Adachi, S., Agnello, M., Ajimura, S., Aoki, K., Bhang, H. C., Bassalleck, B., Botta, E., Bufalino, S., Chiga, N., Evtoukhovitch, P., Feliciello, A., Fujioka, H., Hiruma, F., Honda, R., Hosomi, K., Ichikawa, Y., Ieiri, M., and Igarashi, Y.

Subjects
*BARYONS, *POTASSIUM isotopes, *NUCLEAR reactions, *SCATTERING (Physics), *MISSING mass problem (Astronomy), *NUCLEAR cross sections, *LAGRANGIAN functions
Abstract

The Θ+ pentaquark baryon was searched for via the π- p → K- X reaction with a missing mass resolution of 1.4 MeV/c2 (FWHM) at the Japan Proton Accelerator Research Complex (J-PARC). π- meson beams were incident on the liquid hydrogen target with a beam momentum of 1.92 GeV/c. No peak structure corresponding to the Θ+ mass was observed. The upper limit of the production cross section averaged over the scattering angle of 2° to 15° in the laboratory frame is obtained to be 0.26 /μb/sr in the mass region of 1.51-1.55 GeV/c2. The upper limit of the Θ+ decay width is obtained to be 0.72 and 3.1 MeV for JΘP = 1/2+ and JΘP = 1/2-, respectively, using the effective Lagrangian approach. [ABSTRACT FROM AUTHOR]

Published
2012
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14. Is the 7/21 Isomer State of 43S Spherical?

Author

Chevrier, R., Daugas, J. M., Gaudefroy, L., Ichikawa, Y., Ueno, H., Hass, M., Haas, H., Cottenier, S., Aoi, N., Asahi, K., Balabanski, D. L., Fukuda, N., Furukawa, T., Georgiev, G., Hayashi, H., Iijima, H., Inabe, N., Inoue, T., Ishihara, M., and Ishii, Y.

Subjects
*NUCLEAR isomers, *SPECTRUM analysis, *QUADRUPOLE moments, *QUANTUM perturbations, *NUCLEAR shell theory, *NUCLEAR physics
Abstract

We report on the spectroscopic quadrupole moment measurement of the 7/2¡" isomeric state in "JgS27 [E* = 320.5(5) keV, Tt/2 = 415(3) ns], using the time dependent perturbed angular distribution tech-nique at the RIKEN RIBF facility. Our value, | Qs |= 23(3)

Published
2012
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15. Observation of Spin-Dependent Charge Symmetry Breaking in ΛN Interaction: Gamma-Ray Spectroscopy of 4ΛHe.

Author

Yamamoto, T. O., Agnello, M., Akazawa, Y., Amano, N., Aoki, K., Botta, E., Chiga, N., Ekawa, H., Evtoukhovitch, P., Feliciello, A., Fujita, M., Gogami, T., Hasegawa, S., Hayakawa, S. H., Hayakawa, T., Honda, R., Hosomi, K., Hwang, S. H., Ichige, N., and Ichikawa, Y.

Subjects
*SYMMETRY breaking, *BOUND states, *GAMMA ray spectrometry
Abstract

The energy spacing between the spin-doublet bound state of 4λHe(1+,0+) was determined to be 1406±2±2 keV, by measuring γ rays for the 1+→0+ transition with a high efficiency germanium detector array in coincidence with the 4He(K-,π-)4λHe reaction at J-PARC. In comparison to the corresponding energy spacing in the mirror hypernucleus HΛ4, the present result clearly indicates the existence of charge symmetry breaking (CSB) in ΛN interaction. By combining the energy spacings with the known ground-state binding energies, it is also found that the CSB effect is large in the 0+ ground state but is vanishingly small in the 1+ excited state, demonstrating that the ΛN CSB interaction has spin dependence. [ABSTRACT FROM AUTHOR]

Published
2015
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16. Precise Measurement of Differential Cross Sections of the Σ^{-}p→Λn Reaction in Momentum Range 470-650  MeV/c.

Author

Miwa K, Ahn JK, Akazawa Y, Aramaki T, Ashikaga S, Callier S, Chiga N, Choi SW, Ekawa H, Evtoukhovitch P, Fujioka N, Fujita M, Gogami T, Harada T, Hasegawa S, Hayakawa SH, Honda R, Hoshino S, Hosomi K, Ichikawa M, Ichikawa Y, Ieiri M, Ikeda M, Imai K, Ishikawa Y, Ishimoto S, Jung WS, Kajikawa S, Kanauchi H, Kanda H, Kitaoka T, Kang BM, Kawai H, Kim SH, Kobayashi K, Koike T, Matsuda K, Matsumoto Y, Nagao S, Nagatomi R, Nakada Y, Nakagawa M, Nakamura I, Nanamura T, Naruki M, Ozawa S, Raux L, Rogers TG, Sakaguchi A, Sakao T, Sako H, Sato S, Shiozaki T, Shirotori K, Suzuki KN, Suzuki S, Tabata M, Taille CDL, Takahashi H, Takahashi T, Takahashi TN, Tamura H, Tanaka M, Tanida K, Tsamalaidze Z, Ukai M, Umetsu H, Wada S, Yamamoto TO, Yoshida J, and Yoshimura K

Abstract

The differential cross sections of the Σ^{-}p→Λn reaction were measured accurately for the Σ^{-} momentum (p&#95;{Σ}) ranging from 470 to 650  MeV/c at the J-PARC Hadron Experimental Facility. Precise angular information about the Σ^{-}p→Λn reaction was obtained for the first time by detecting approximately 100 reaction events at each angular step of Δcosθ=0.1. The obtained differential cross sections show a slightly forward-peaking structure in the measured momentum regions. The cross sections integrated for -0.7≤cosθ≤1.0 were obtained as 22.5±0.68 [statistical error(stat.)] ±0.65 [systematic error(syst.)] mb and 15.8±0.83(stat)±0.52(syst)  mb for 470

Published
2022
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17. Observation of Coulomb-Assisted Nuclear Bound State of Ξ^{-}-^{14}N System.

Author

Hayakawa SH, Agari K, Ahn JK, Akaishi T, Akazawa Y, Ashikaga S, Bassalleck B, Bleser S, Ekawa H, Endo Y, Fujikawa Y, Fujioka N, Fujita M, Goto R, Han Y, Hasegawa S, Hashimoto T, Hayakawa T, Hayata E, Hicks K, Hirose E, Hirose M, Honda R, Hoshino K, Hoshino S, Hosomi K, Hwang SH, Ichikawa Y, Ichikawa M, Imai K, Inaba K, Ishikawa Y, Ito H, Ito K, Jung WS, Kanatsuki S, Kanauchi H, Kasagi A, Kawai T, Kim MH, Kim SH, Kinbara S, Kiuchi R, Kobayashi H, Kobayashi K, Koike T, Koshikawa A, Lee JY, Ma TL, Matsumoto SY, Minakawa M, Miwa K, Moe AT, Moon TJ, Moritsu M, Nagase Y, Nakada Y, Nakagawa M, Nakashima D, Nakazawa K, Nanamura T, Naruki M, Nyaw ANL, Ogura Y, Ohashi M, Oue K, Ozawa S, Pochodzalla J, Ryu SY, Sako H, Sato S, Sato Y, Schupp F, Shirotori K, Soe MM, Soe MK, Sohn JY, Sugimura H, Suzuki KN, Takahashi H, Takahashi T, Takeda T, Tamura H, Tanida K, Theint AMM, Tint KT, Toyama Y, Ukai M, Umezaki E, Watabe T, Watanabe K, Yamamoto TO, Yang SB, Yoon CS, Yoshida J, Yoshimoto M, Zhang DH, and Zhang Z

Abstract

In an emulsion-counter hybrid experiment performed at J-PARC, a Ξ^{-} absorption event was observed which decayed into twin single-Λ hypernuclei. Kinematic calculations enabled a unique identification of the reaction process as Ξ^{-}+^{14}N→&#95;{Λ}^{10}Be+&#95;{Λ}^{5}He. For the binding energy of the Ξ^{-} hyperon in the Ξ^{-}-^{14}N system a value of 1.27±0.21  MeV was deduced. The energy level of Ξ^{-} is likely a nuclear 1p state which indicates a weak ΞN-ΛΛ coupling.

Published
2021
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18. g Factor of the ^{99}Zr (7/2^{+}) Isomer: Monopole Evolution in the Shape-Coexisting Region.

Author

Boulay F, Simpson GS, Ichikawa Y, Kisyov S, Bucurescu D, Takamine A, Ahn DS, Asahi K, Baba H, Balabanski DL, Egami T, Fujita T, Fukuda N, Funayama C, Furukawa T, Georgiev G, Gladkov A, Hass M, Imamura K, Inabe N, Ishibashi Y, Kawaguchi T, Kawamura T, Kim W, Kobayashi Y, Kojima S, Kusoglu A, Lozeva R, Momiyama S, Mukul I, Niikura M, Nishibata H, Nishizaka T, Odahara A, Ohtomo Y, Ralet D, Sato T, Shimizu Y, Sumikama T, Suzuki H, Takeda H, Tao LC, Togano Y, Tominaga D, Ueno H, Yamazaki H, Yang XF, and Daugas JM

Abstract

The gyromagnetic factor of the low-lying E=251.96(9)  keV isomeric state of the nucleus ^{99}Zr was measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of J^{π}=7/2^{+}, with a half-life of T&#95;{1/2}=336(5)  ns. The isomer was produced and spin aligned via the abrasion-fission of a ^{238}U primary beam at RIKEN RIBF. A magnetic moment |μ|=2.31(14)μ&#95;{N} was deduced showing that this isomer is not single particle in nature. A comparison of the experimental values with interacting boson-fermion model IBFM-1 results shows that this state is strongly mixed with a main νd&#95;{5/2} composition. Furthermore, it was found that monopole single-particle evolution changes significantly with the appearance of collective modes, likely due to type-II shell evolution.

Published
2020
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19. First Determination of the Level Structure of an sd-Shell Hypernucleus, &#95;{Λ}^{19}F.

Author

Yang SB, Ahn JK, Akazawa Y, Aoki K, Chiga N, Ekawa H, Evtoukhovitch P, Feliciello A, Fujita M, Hasegawa S, Hayakawa S, Hayakawa T, Honda R, Hosomi K, Hwang SH, Ichige N, Ichikawa Y, Ikeda M, Imai K, Ishimoto S, Kanatsuki S, Kim SH, Kinbara S, Kobayashi K, Koike T, Lee JY, Miwa K, Moon TJ, Nagae T, Nakada Y, Nakagawa M, Ogura Y, Sakaguchi A, Sako H, Sasaki Y, Sato S, Shirotori K, Sugimura H, Suto S, Suzuki S, Takahashi T, Tamura H, Tanida K, Togawa Y, Tsamalaidze Z, Ukai M, Wang TF, and Yamamoto TO

Abstract

We report on the first observation of γ rays emitted from an sd-shell hypernucleus, &#95;{Λ}^{19}F. The energy spacing between the ground state doublet, 1/2^{+} and 3/2^{+} states, of &#95;{Λ}^{19}F is determined to be 315.5±0.4(stat)&#95;{-0.5}^{+0.6}(syst)  keV by measuring the γ-ray energy of the M1(3/2^{+}→1/2^{+}) transition. In addition, three γ-ray peaks are observed and assigned as E2(5/2^{+}→1/2^{+}), E1(1/2^{-}→1/2^{+}), and E1(1/2^{-}→3/2^{+}) transitions. The excitation energies of the 5/2^{+} and 1/2^{-} states are determined to be 895.2±0.3(stat)±0.5(syst) and 1265.6±1.2(stat)&#95;{-0.5}^{+0.7}(syst)  keV, respectively. It is found that the ground state doublet spacing is well described by theoretical models based on existing s- and p-shell hypernuclear data.

Published
2018
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20. Observation of Spin-Dependent Charge Symmetry Breaking in ΛN Interaction: Gamma-Ray Spectroscopy of &#95;{Λ}^{4}He.

Author

Yamamoto TO, Agnello M, Akazawa Y, Amano N, Aoki K, Botta E, Chiga N, Ekawa H, Evtoukhovitch P, Feliciello A, Fujita M, Gogami T, Hasegawa S, Hayakawa SH, Hayakawa T, Honda R, Hosomi K, Hwang SH, Ichige N, Ichikawa Y, Ikeda M, Imai K, Ishimoto S, Kanatsuki S, Kim MH, Kim SH, Kinbara S, Koike T, Lee JY, Marcello S, Miwa K, Moon T, Nagae T, Nagao S, Nakada Y, Nakagawa M, Ogura Y, Sakaguchi A, Sako H, Sasaki Y, Sato S, Shiozaki T, Shirotori K, Sugimura H, Suto S, Suzuki S, Takahashi T, Tamura H, Tanabe K, Tanida K, Tsamalaidze Z, Ukai M, Yamamoto Y, and Yang SB

Abstract

The energy spacing between the spin-doublet bound state of &#95;{Λ}^{4}He(1^{+},0^{+}) was determined to be 1406±2±2  keV, by measuring γ rays for the 1^{+}→0^{+} transition with a high efficiency germanium detector array in coincidence with the ^{4}He(K^{-},π^{-})&#95;{Λ}^{4}He reaction at J-PARC. In comparison to the corresponding energy spacing in the mirror hypernucleus &#95;{Λ}^{4}H, the present result clearly indicates the existence of charge symmetry breaking (CSB) in ΛN interaction. By combining the energy spacings with the known ground-state binding energies, it is also found that the CSB effect is large in the 0^{+} ground state but is vanishingly small in the 1^{+} excited state, demonstrating that the ΛN CSB interaction has spin dependence.

Published
2015
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21. Search for the Θ+ pentaquark via the π(-)p→K(-)X reaction at 1.92 GeV/c.

Author

Shirotori K, Takahashi TN, Adachi S, Agnello M, Ajimura S, Aoki K, Bhang HC, Bassalleck B, Botta E, Bufalino S, Chiga N, Evtoukhovitch P, Feliciello A, Fujioka H, Hiruma F, Honda R, Hosomi K, Ichikawa Y, Ieiri M, Igarashi Y, Imai K, Ishibashi N, Ishimoto S, Itahashi K, Iwasaki R, Joo CW, Kim MJ, Kim SJ, Kiuchi R, Koike T, Komatsu Y, Kulikov VV, Marcello S, Masumoto S, Matsuoka K, Miwa K, Moritsu M, Nagae T, Naruki M, Niiyama M, Noumi H, Ozawa K, Saito N, Sakaguchi A, Sako H, Samoilov V, Sato M, Sato S, Sato Y, Sawada S, Sekimoto M, Sugimura H, Suzuki S, Takahashi H, Takahashi T, Tamura H, Tanaka T, Tanida K, Tokiyasu AO, Tomida N, Tsamalaidze Z, Ukai M, Yagi K, Yamamoto TO, Yang SB, Yonemoto Y, Yoon CJ, and Yoshida K

Abstract

The Θ(+) pentaquark baryon was searched for via the π(-)p→K(-)X reaction with a missing mass resolution of 1.4 MeV/c(2) (FWHM) at the Japan Proton Accelerator Research Complex (J-PARC). π(-) meson beams were incident on the liquid hydrogen target with a beam momentum of 1.92 GeV/c. No peak structure corresponding to the Θ(+) mass was observed. The upper limit of the production cross section averaged over the scattering angle of 2° to 15° in the laboratory frame is obtained to be 0.26 μb/sr in the mass region of 1.51-1.55 GeV/c(2). The upper limit of the Θ(+) decay width is obtained to be 0.72 and 3.1 MeV for J(Θ)(P)=1/2(+) and J(Θ)(P)=1/2(-), respectively, using the effective Lagrangian approach.

Published
2012
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22. Is the 7/2(1)- isomer state of 43S spherical?

Author

Chevrier R, Daugas JM, Gaudefroy L, Ichikawa Y, Ueno H, Hass M, Haas H, Cottenier S, Aoi N, Asahi K, Balabanski DL, Fukuda N, Furukawa T, Georgiev G, Hayashi H, Iijima H, Inabe N, Inoue T, Ishihara M, Ishii Y, Kameda D, Kubo T, Nanao T, Neyens G, Ohnishi T, Rajabali MM, Suzuki K, Takeda H, Tsuchiya M, Vermeulen N, Watanabe H, and Yoshimi A

Abstract

We report on the spectroscopic quadrupole moment measurement of the 7/2(1)(-) isomeric state in (16)(43)S(27) [E*=320.5(5) keV, T(1/2)=415(3) ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, |Q(s)|=23(3) efm(2), is larger than that expected for a single-particle state. Shell model calculations using the modern SDPF-U interaction for this mass region reproduce remarkably well the measured |Q(s)|, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape.

Published
2012
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23. Search for nu(e) from the sun at Super-Kamiokande-I.

Author

Gando Y, Fukuda S, Fukuda Y, Ishitsuka M, Itow Y, Kajita T, Kameda J, Kaneyuki K, Kobayashi K, Koshio Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Namba T, Obayashi Y, Okada A, Ooyabu T, Saji C, Sakurai N, Shiozawa M, Suzuki Y, Takeuchi H, Takeuchi Y, Totsuka Y, Yamada S, Desai S, Earl M, Kearns E, Messier MD, Stone JL, Sulak LR, Walter CW, Goldhaber M, Barszczak T, Casper D, Gajewski W, Kropp WR, Mine S, Liu DW, Smy MB, Sobel HW, Vagins MR, Gago A, Ganezer KS, Hill J, Keig WE, Ellsworth RW, Tasaka S, Kibayashi A, Learned JG, Matsuno S, Takemori D, Hayato Y, Ichikawa AK, Ishii T, Kobayashi T, Maruyama T, Nakamura K, Oyama Y, Sakuda M, Yoshida M, Kohama M, Iwashita T, Suzuki AT, Inagaki T, Kato I, Nakaya T, Nishikawa K, Haines TJ, Dazeley S, Hatakeyama S, Svoboda R, Blaufuss E, Chen ML, Goodman JA, Guillian G, Sullivan GW, Turcan D, Scholberg K, Habig A, Ackermann M, Jung CK, Martens K, Malek M, Mauger C, McGrew C, Sharkey E, Viren B, Yanagisawa C, Toshito T, Mitsuda C, Miyano K, Shibata T, Kajiyama Y, Nagashima Y, Nitta K, Takita M, Kim HI, Kim SB, Yoo J, Okazawa H, Ishizuka T, Etoh M, Hasegawa T, Inoue K, Ishihara K, Shirai J, Suzuki A, Koshiba M, Hatakeyama Y, Ichikawa Y, Koike M, Nishijima K, Ishino H, Morii M, Nishimura R, Watanabe Y, Kielczewska D, Berns HG, Boyd SC, Stachyra AL, and Wilkes RJ

Abstract

We present the results of a search for low energy nu(e) from the Sun using 1496 days of data from Super-Kamiokande-I. We observe no significant excess of events and set an upper limit for the conversion probability to nu(e) of the 8B solar neutrino. This conversion limit is 0.8% (90% C.L.) of the standard solar model's neutrino flux for total energy=8-20 MeV. We also set a flux limit for monochromatic nu(e) for E(nu(e))=10-17 MeV.

Published
2003
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24. Solar 8B and hep neutrino measurements from 1258 days of Super-Kamiokande data.

Author

Fukuda S, Fukuda Y, Ishitsuka M, Itow Y, Kajita T, Kameda J, Kaneyuki K, Kobayashi K, Koshio Y, Miura M, Moriyama S, Nakahata M, Nakayama S, Okada A, Sakurai N, Shiozawa M, Suzuki Y, Takeuchi H, Takeuchi Y, Toshito T, Totsuka Y, Yamada S, Desai S, Earl M, Kearns E, Messier MD, Scholberg K, Stone JL, Sulak LR, Walter CW, Goldhaber M, Barszczak T, Casper D, Gajewski W, Kropp WR, Mine S, Liu DW, Price LR, Smy MB, Sobel HW, Vagins MR, Ganezer KS, Keig WE, Ellsworth RW, Tasaka S, Kibayashi A, Learned JG, Matsuno S, Takemori D, Hayato Y, Ishii T, Kobayashi T, Nakamura K, Obayashi Y, Oyama Y, Sakai A, Sakuda M, Kohama M, Suzuki AT, Inagaki T, Nakaya T, Nishikawa K, Haines TJ, Blaufuss E, Dazeley S, Lee KB, Svoboda R, Goodman JA, Guillian G, Sullivan GW, Turcan D, Habig A, Hill J, Jung CK, Martens K, Malek M, Mauger C, McGrew C, Sharkey E, Viren B, Yanagisawa C, Mitsuda C, Miyano K, Saji C, Shibata T, Kajiyama Y, Nagashima Y, Nitta K, Takita M, Yoshida M, Kim HI, Kim SB, Yoo J, Okazawa H, Ishizuka T, Etoh M, Gando Y, Hasegawa T, Inoue K, Ishihara K, Maruyama T, Shirai J, Suzuki A, Koshiba M, Hatakeyama Y, Ichikawa Y, Koike M, Nishijima K, Fujiyasu H, Ishino H, Morii M, Watanabe Y, Golebiewska U, Kielczewska D, Boyd SC, Stachyra AL, Wilkes RJ, and Young KK

Abstract

Solar neutrino measurements from 1258 days of data from the Super-Kamiokande detector are presented. The measurements are based on recoil electrons in the energy range 5.0-20.0 MeV. The measured solar neutrino flux is 2.32+/-0.03(stat)+0.08-0.07(syst)x10(6) cm(-2) x s(-1), which is 45.1+/-0.5(stat)+1.6-1.4(syst)% of that predicted by the BP2000 SSM. The day vs night flux asymmetry (Phi(n)-Phi(d))/Phi(average) is 0.033+/-0.022(stat)+0.013-0.012(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 40x10(3) cm(-2) x s(-1), which is 4.3 times the BP2000 SSM prediction.

Published
2001
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