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3. NMR Data Taking System by Personal Computer PC9801 (NEC)

Author

Ishimoto, S., primary, Ent, R., additional, van Gelder, J. F. M., additional, Hasegawa, T., additional, Hayashi, N., additional, Horikawa, N., additional, Iwata, T., additional, Niinikoski, T. O., additional, Okumi, S., additional, Postma, H., additional, and Rijllart, A., additional

Published
1991
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6. Effect of Vitamin D Analogs in Rats with Experimental Renal Osteodystrophy

Author

Ueno, K., primary, Kawashima, H., additional, Izawa, Y., additional, Ohnuma, N., additional, Makita, T., additional, Kurozumi, S., additional, Hashimoto, Y., additional, Ishimoto, S., additional, Kawaguchi, Y., additional, Yamamoto, M., additional, Kimura, Y., additional, Ogura, Y., additional, Ueda, Y., additional, Kushida, K., additional, and Inoue, T., additional

Published
1979
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8. Search for a kaonic nuclear state via 4He(K−, N) reaction at rest

Author

Iwasaki, M., primary, Bhang, H., additional, Chiba, J., additional, Choi, S., additional, Fukuda, Y., additional, Hanaki, T., additional, Hayano, R. S., additional, Iio, M., additional, Ishikawa, T., additional, Ishimoto, S., additional, Ishiwatari, T., additional, Itahashi, K., additional, Iwai, M., additional, Kienle, P., additional, Kim, J. H., additional, Matsuda, Y., additional, Ohnishi, H., additional, Okada, S., additional, Outa, H., additional, Sato, M., additional, Suzuki, S., additional, Suzuki, T., additional, Tomono, D., additional, Widmann, E., additional, Yamazaki, T., additional, and Yim, H., additional

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9. Experimental search of strange tribaryons in the 4He(K stop − , n) reaction

Author

Yim, H., primary, Bhang, H., additional, Chiba, J., additional, Choi, S., additional, Fukuda, Y., additional, Hanaki, T., additional, Hayano, R. S., additional, Iio, M., additional, Ishikawa, T., additional, Ishimoto, S., additional, Ishiwatari, T., additional, Itahashi, K., additional, Iwai, M., additional, Iwasaki, M., additional, Kienle, P., additional, Kim, J. H., additional, Matsuda, Y., additional, Ohnishi, H., additional, Okada, S., additional, Outa, H., additional, Sato, M., additional, Suzuki, S., additional, Suzuki, T., additional, Tomono, D., additional, Widmann, E., additional, and Yamazaki, T., additional

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10. Search for Θ+ via K+p → π +X reaction with high-resolution spectrometer system

Author

Dairaku, S., primary, Ajimura, S., additional, Arvieux, J., additional, Fujioka, H., additional, Fukuda, T., additional, Funahashi, H., additional, Hayata, M., additional, Hicks, K., additional, Imai, K., additional, Ishimoto, S., additional, Kameyama, T., additional, Kinoshita, S., additional, Koike, T., additional, Ma, Y., additional, Maruta, T., additional, Miura, Y., additional, Miwa, K., additional, Miyabe, M., additional, Nagae, T., additional, Nakajima, D., additional, Nakano, T., additional, Nakazawa, K., additional, Naruki, M., additional, Niiyama, M., additional, Noumi, H., additional, Saito, N., additional, Sato, Y., additional, Sawada, S., additional, Seki, Y., additional, Sekimoto, M., additional, Shirotori, K., additional, Shoji, K., additional, Suzuki, S., additional, Takahashi, H., additional, Takahashi, T., additional, Takahashi, T. N., additional, Tamura, H., additional, Tanaka, N., additional, Tanida, K., additional, Toyoda, A., additional, Watanabe, T., additional, Yosoi, M., additional, and Zavislak, R., additional

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11. Precision spectroscopy of kaonic helium-4 X-rays

Author

Hayano, R. S., primary, Beer, G., additional, Bhang, H., additional, Cargnelli, M., additional, Chiba, J., additional, Choi, S., additional, Curceanu, C., additional, Fukuda, Y., additional, Hanaki, T., additional, Iio, M., additional, Ishikawa, T., additional, Ishimoto, S., additional, Ishiwatari, T., additional, Itahashi, K., additional, Iwai, M., additional, Iwasaki, M., additional, Juhász, B., additional, Kienle, P., additional, Marton, J., additional, Matsuda, Y., additional, Ohnishi, H., additional, Okada, S., additional, Outa, H., additional, Sato, M., additional, Schmid, P., additional, Suzuki, S., additional, Suzuki, T., additional, Tatsuno, H., additional, Tomono, D., additional, Widmann, E., additional, Yamazaki, T., additional, Yim, H., additional, and Zmeskal, J., additional

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13. Search for a kaonic nuclear state via 4He(K−, N) reaction at rest.

Author

Iwasaki, M., Bhang, H., Chiba, J., Choi, S., Fukuda, Y., Hanaki, T., Hayano, R. S., Iio, M., Ishikawa, T., Ishimoto, S., Ishiwatari, T., Itahashi, K., Iwai, M., Kienle, P., Kim, J. H., Matsuda, Y., Ohnishi, H., Okada, S., Outa, H., and Sato, M.

Abstract

Very recently, we have performed a couple of experiments, KEK PS-E549/E570, for the detailed study of the strange tribaryon S0(3115) obtained in KEK PS-E471. These experiments were performed to accumulate much higher statistics with improved experimental apparatus especially for the better proton spectroscopy of the 4He(stopped K−, N) reaction. In contrast to the previous proton spectrum, no narrow (∼ 20 MeV) peak structure was found either in the inclusive 4He(stopped K−, p) or in the semi-inclusive 4He(stopped K−, pX±) reaction channel, which is equivalent to the previous E471 event trigger condition. Detailed analysis of the present data and simulation shows that the peak, corresponding to S0(3115), has been an experimental artifact. Present analysis does not exclude the possible existence of a much wider structure. To be sensitive to such structure and for better understanding of the non-mesonic K− absorption reaction channel, detailed analysis of the data is in progress. [ABSTRACT FROM AUTHOR]

Published
2007
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14. Experimental search of strange tribaryons in the 4He(K stop − , n) reaction.

Author

Yim, H., Bhang, H., Chiba, J., Choi, S., Fukuda, Y., Hanaki, T., Hayano, R. S., Iio, M., Ishikawa, T., Ishimoto, S., Ishiwatari, T., Itahashi, K., Iwai, M., Iwasaki, M., Kienle, P., Kim, J. H., Matsuda, Y., Ohnishi, H., Okada, S., and Outa, H.

Abstract

Recent prediction of Akaishi and Yamazaki on the strongly bound kaonic nuclear states with remarkably narrow widths have generated a lot of physics interests and the states have been studied and discussed intensively [1]. The fundamental motivation behind such intense study was that on one hand they could give us the excellent opportunities to investigate dense and cold hadronic systems in which quarks may be deconfined and the partial restoration of the chiral symmetry is expected to occur in a large scale [2], on the other hand the existence itself with such narrow width is extremely peculiar and interesting. Since then, the states have been studied in a series of experiments at BNL [3], KEK [4,5], GSI [6] and LNF [7]. We have recently reported an indication of a strange tribaryon state, S+, with a width Γ < 23 MeV/c2, in the neutron time of flight (TOF) spectrum of the 4He(Kstop− , n) reaction in the KEK-PS E471 which was the first experiment at KEK-PS to search for the deeply bound narrow K−ppn (T=0) state [4]. In order to confirm the state, S+, and search for other possible total isospin T=0/1 tribaryonic states, we have re-measured the neutron energy spectrum from 4He(Kstop− , n) reaction in the KEK-PS E549 experiment with the upgraded setup with which TOF resolution was improved 1.5 times and the statistics was increased 6 times. However, in the neutron spectra, we find such a smooth momentum distribution that we conclude the state either not so strong to stick out of the inclusive background or too broad to form a peak. It is now necessary to analyze the data for further details such as the hyperon motion correlation. [ABSTRACT FROM AUTHOR]

Published
2007
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15. Precision spectroscopy of kaonic helium-4 X-rays.

Author

Hayano, R. S., Beer, G., Bhang, H., Cargnelli, M., Chiba, J., Choi, S., Curceanu, C., Fukuda, Y., Hanaki, T., Iio, M., Ishikawa, T., Ishimoto, S., Ishiwatari, T., Itahashi, K., Iwai, M., Iwasaki, M., Juhász, B., Kienle, P., Marton, J., and Matsuda, Y.

Abstract

The Balmer-series X-rays of kaonic helium-4 have been re-measured with a projected goal of determining the 2p-level strong-interaction shift to a precision better than a few electron volts. Preliminary results indicate that the shift must be much smaller than the current world average of −43 ± 8 eV. [ABSTRACT FROM AUTHOR]

Published
2007
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16. Search for Θ+ via K+p → Π +X reaction with high-resolution spectrometer system.

Author

Dairaku, S., Ajimura, S., Arvieux, J., Fujioka, H., Fukuda, T., Funahashi, H., Hayata, M., Hicks, K., Imai, K., Ishimoto, S., Kameyama, T., Kinoshita, S., Koike, T., Ma, Y., Maruta, T., Miura, Y., Miwa, K., Miyabe, M., Nagae, T., and Nakajima, D.

Abstract

A search for the Θ+ pentaquark in the K+p → Π+X reaction was performed utilizing a high-resolution spectrometer at the K6 beam line of the KEK 12GeV Proton Synchrotron. Incident K+ beams of 1.2 GeV/c were irradiated to a liquid hydrogen target. No significant evidence of the Θ+ was found. The upper limit of the differential cross section averaged over 2° to 20° in the laboratory frame for the K+p → Π+Θ+ reaction was obtained to be 1.9 μb/sr at 90 % confidence level. From the present result, the t-channel process is excluded or the coupling constant gK*NΘ is quite small. [ABSTRACT FROM AUTHOR]

Published
2007
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