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44 results on '"Ashikaga, S."'

1. Measurement of differential cross sections for $\Sigma^+p$ elastic scattering in the momentum range 0.44-0.80 GeV/c

Author

Collaboration, J-PARC E40, Nanamura, T., Miwa, K., Ahn, J. K., Akazawa, Y., Aramaki, T., Ashikaga, S., Callier, S., Chiga, N., Choi, S. W., Ekawa, H., Evtoukhovitch, P., Fujioka, N., Fujita, M., Gogami, T., Harada, T. K., Hasegawa, S., Hayakawa, S. H., Honda, R., Hoshino, S., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ieiri, M., Ikeda, M., Imai, K., Ishikawa, Y., Ishimoto, S., Jung, W. S., Kajikawa, S., Kanauchi, H., Kanda, H., Kitaoka, T., Kang, B. M., Kawai, H., Kim, S. H., Kobayashi, K., Koike, T., Matsuda, K., Matsumoto, Y., Nagao, S., Nagatomi, R., Nakada, Y., Nakagawa, M., Nakamura, I., Naruki, M., Ozawa, S., Raux, L., Rogers, T. G., Sakaguchi, A., Sakao, T., Sako, H., Sato, S., Shiozaki, T., Shirotori, K., Suzuki, K. N., Suzuki, S., Tabata, M., Taille, C. d. L., Takahashi, H., Takahashi, T., Takahashi, T. N., Tamura, H., Tanaka, M., Tanida, K., Tsamalaidze, Z., Ukai, M., Umetsu, H., Wada, S., Yamamoto, T. O., Yoshida, J., and Yoshimura, K.

Subjects
Nuclear Experiment
Abstract

We performed a novel $\Sigma^+ p$ scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 $\Sigma^+ p$ elastic scattering events were identified from $4.9 \times 10^7$ tagged $\Sigma^+$ particles in the $\Sigma^+$ momentum range 0.44 -- 0.80 GeV/$c$. The differential cross sections of the $\Sigma^+ p$ elastic scattering were derived with much better precision than in previous experiments. The obtained differential cross sections were approximately 2 mb/sr or less, which were not as large as those predicted by the fss2 and FSS models based on the quark cluster model in the short-range region. By performing phase-shift analyses for the obtained differential cross sections, we experimentally derived the phase shifts of the $^3 S_1$ and $^1 P_1$ channels for the first time. The phase shift of the $^3 S_1$ channel, where a large repulsive core was predicted owing to the Pauli effect between quarks, was evaluated as $20^\circ<|\delta_{^3S_1}|<35^\circ$. If the sign of $\delta_{^3S_1}$ is assumed to be negative, the interaction in this channel is moderately repulsive, as the Nijmegen extended-sort-core models predicted.

Published
2022

2. Precise measurement of differential cross sections of the {\Sigma}-p --> {\Lambda} n reaction in momentum range 470-650 MeV/c

Author

Collaboration, J-PARC E40, Miwa, K., Ahn, J. K., Akazawa, Y., Aramaki, T., Ashikaga, S., Callier, S., Chiga, N., Choi, S. W., Ekawa, H., Evtoukhovitch, P., Fujioka, N., Fujita, M., Gogami, T., Harada, T., Hasegawa, S., Hayakawa, S. H., Honda, R., Hoshino, S., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ieiri, M., Ikeda, M., Imai, K., Ishikawa, Y., Ishimoto, S., Jung, W. S., Kajikawa, S., Kanauchi, H., Kanda, H., Kitaoka, T., Kang, B. M., Kawai, H., Kim, S. H., 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, T. G., Sakaguchi, A., Sakao, T., Sako, H., Sato, S., Shiozaki, T., Shirotori, K., Suzuki, K. N., Suzuki, S., Tabata, M., Taille, C. d. L., Takahashi, H., Takahashi, T., Takahashi, T. N., Tamura, H., Tanaka, M., Tanida, K., Tsamalaidze, Z., Ukai, M., Umetsu, H., Wada, S., Yamamoto, T. O., Yoshida, J., and Yoshimura, K.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The differential cross sections of the {\Sigma}-p --> {\Lambda} n reaction were measured accurately for the {\Sigma}- momentum (p_{{\Sigma}}) ranging from 470 to 650 MeV/c at the J-PARC Hadron Experimental Facility. Precise angular information about the {\Sigma}-p --> {\Lambda} n reaction was obtained for the first time by detecting approximately 100 reaction events at each angular step of {\Delta}cos{\theta} = 0.1. The obtained differential cross sections show slightly forward-peaking structure in the measured momentum regions.The cross sections integrated for -0.7 < cos{\theta} < 1.0 were obtained as 22.5 +- 0.68 (stat.) +- 0.65 (syst.) mb and 15.8 +-0.83(stat.) +- 0.52 (syst.) mb for 470

Published
2021

3. Measurement of the differential cross sections of the Sigma-p elastic scattering in momentum range of 470 to 850 MeV/c

Author

Collaboration, J-PARC E40, Miwa, K., Ahn, J. K., Akazawa, Y., Aramaki, T., Ashikaga, S., Callier, S., Chiga, N., Choi, S. W., Ekawa, H., Evtoukhovitch, P., Fujioka, N., Fujita, M., Gogami, T., Harada, T., Hasegawa, S., Hayakawa, S. H., Honda, R., Hoshino, S., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ieiri, M., Ikeda, M., Imai, K., Ishikawa, Y., Ishimoto, S., Jung, W. S., Kajikawa, S., Kanauchi, H., Kanda, H., Kitaoka, T., Kang, B. M., Kawai, H., Kim, S. H., 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, T. G., Sakaguchi, A., Sakao, T., Sako, H., Sato, S., Shiozaki, T., Shirotori, K., Suzuki, K. N., Suzuki, S., Tabata, M., Taille, C. d. L., Takahashi, H., Takahashi, T., Takahashi, T. N., Tamura, H., Tanaka, M., Tanida, K., Tsamalaidze, Z., Ukai, M., Umetsu, H., Wada, S., Yamamoto, T. O., Yoshida, J., and Yoshimura, K.

Subjects
Nuclear Experiment
Abstract

A high statistics $\Sigma p$ scattering experiment has been performed at the J-PARC Hadron Experimental Facility. Data for momentum-tagged $\Sigma^{-}$ running in a liquid hydrogen target were accumulated by detecting the $\pi^{-}p \to K^{+}\Sigma^{-}$ reaction with a high intensity $\pi^{-}$ beam of 20 M/spill. Differential cross sections of the $\Sigma^{-}p$ elastic scattering were derived with a drastically improved accuracy by identifying the largest statistics of about 4,500 events from 1.72 $\times$ $10^{7}$ $\Sigma^{-}$. The derived differential cross section shows a clear forward-peaking angular distribution for a $\Sigma^{-}$ momentum range from 470 to 850 MeV/$c$. The accurate data will impose a strong constraint on the theoretical models of the baryon-baryon interactions.

Published
2021

4. Construction of gas electron multiplier tracker for the J-PARC E16 experiment

Author

Murakami, T.N., Aoki, K., Ashikaga, S., En’yo, H., Gunji, T., Hamagaki, H., Ichikawa, M., Kanno, K., Kobayashi, S., Komatsu, Y., Kondo, T.K., Morino, Y., Murakami, H., Muto, R., Nakai, W., Nakasuga, S., Naruki, M., Obara, Y., Ozawa, K., Sekimoto, M., Shibukawa, T., Shigaki, K., Suzuki, K.N., Takagi, A., Takahashi, T.N., Watanabe, Y-S., and Yokkaichi, S.

Published
2024
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5. Observation of Coulomb-assisted nuclear bound state of $\Xi^-$-$^{14}$N 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.

Subjects
Nuclear Experiment
Abstract

In an emulsion-counter hybrid experiment performed at J-PARC, a $\Xi^-$ absorption event was observed which decayed into twin single-$\Lambda$ hypernuclei. Kinematic calculations enabled a unique identification of the reaction process as $\Xi^{-} + ^{14}$N$\ \rightarrow\ ^{10}_\Lambda$Be + $^5_\Lambda$He. For the binding energy of the $\Xi^{-}$ hyperon in the $\Xi^-$-$^{14}$N system a value of $1.27 \pm 0.21$ MeV was deduced. The energy level of $\Xi^-$ is likely a nuclear $1p$ state which indicates a weak ${\Xi}N$-$\Lambda\Lambda$ coupling.

Published
2020
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6. Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment

Author

Ekawa, H., Agari, K., Ahn, J. K., Akaishi, T., Akazawa, Y., Ashikaga, S., Bassalleck, B., Bleser, S., Endo, Y., Fujikawa, Y., Fujioka, N., Fujita, M., Goto, R., Han, Y., Hasegawa, S., Hashimoto, T., Hayakawa, S. H., 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., Ieiri, M., Imai, K., Inaba, K., Ishikawa, Y., Iskendir, A., 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., Lee, J. W., 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., Sasaki, Y., 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., Takahashi, Y., 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.

Subjects
Nuclear Experiment
Abstract

A double-$\Lambda$ hypernucleus, ${}_{\Lambda\Lambda}\mathrm{Be}$, was observed by the J-PARC E07 collaboration in nuclear emulsions tagged by the $(K^{-},K^{+})$ reaction. This event was interpreted as a production and decay of $ {}_{\Lambda\Lambda}^{\;10}\mathrm{Be}$, ${}_{\Lambda\Lambda}^{\;11}\mathrm{Be}$, or ${}_{\Lambda\Lambda}^{\;12}\mathrm{Be}^{*}$ via $\Xi^{-}$ capture in ${}^{16}\mathrm{O}$. By assuming the capture in the atomic 3D state, the binding energy of two $\Lambda$ hyperons$\,$($B_{\Lambda\Lambda}$) of these double-$\Lambda$ hypernuclei are obtained to be $15.05 \pm 0.11\,\mathrm{MeV}$, $19.07 \pm 0.11\,\mathrm{MeV}$, and $13.68 \pm 0.11\,\mathrm{MeV}$, respectively. Based on the kinematic fitting, ${}_{\Lambda\Lambda}^{\;11}\mathrm{Be}$ is the most likely explanation for the observed event., Comment: 11 pages, 3 figures

Published
2018
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7. Trigger Merging Module for the J-PARC E16 Experiment

Author

Ichikawa, M., Takahashi, T. N., Aoki, K., Ashikaga, S., Hamada, E., Honda, R., Igarashi, Y., Ikeno, M., Kawama, D., Naruki, M., Ozawa, K., Sendai, H., Suzuki, K. N., Tanaka, M., Uchida, T., and Yokkaichi, S.

Subjects
Physics - Instrumentation and Detectors
Abstract

An experiment to measure an invariant mass of {\phi} mesons in nuclear medium is planned as the J-PARC E16 experiment. A trigger merging module (TRG-MRG) has been developed to detect leading-edges from 256 channels of discriminator-output signals and transmit those serialized hit data to trigger decision module with four optical links. The result of the test shows enough performance of the TRG-MRG as 1 ns TDC and data multiplexer with four 6.25 Gbps transceivers., Comment: 6 pages, 17 figures, conference record for the 21st IEEE Real Time Conference

Published
2018
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8. Construction of gas electron multiplier tracker for the J-PARC E16 experiment

Author

Murakami, T.N., primary, Aoki, K., additional, Ashikaga, S., additional, En’yo, H., additional, Gunji, T., additional, Hamagaki, H., additional, Ichikawa, M., additional, Kanno, K., additional, Kobayashi, S., additional, Komatsu, Y., additional, Kondo, T.K., additional, Morino, Y., additional, Murakami, H., additional, Muto, R., additional, Nakai, W., additional, Nakasuga, S., additional, Naruki, M., additional, Obara, Y., additional, Ozawa, K., additional, Sekimoto, M., additional, Shibukawa, T., additional, Shigaki, K., additional, Suzuki, K.N., additional, Takagi, A., additional, Takahashi, T.N., additional, Watanabe, Y-S., additional, and Yokkaichi, S., additional

Published
2023
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9. Recent progress and future prospects of hyperon nucleon scattering experiment

Author

Miwa Koji, Nanamura Takuya, Sakao Tamao, Ahn J. K., Akazawa Y., Aramaki T., Ashikaga S., Callier S., Chiga N., Choi S. W., Ekawa H., Evtoukhovitch P., Fujioka N., Fujita M., Gogami T., Harada T., Hasegawa S., Hayakawa S. H., Honda R., Hoshino S., Hosomi K., Ichikawa M., Ichikawa Y., Ieiri M., Ikedai M., Imai K., Ishikawa Y., Ishimoto S., Jung W. S., Kajikawa S., Kanauchi H., Kanda H., Kitaoka T., Kang B. M., Kawai H., Kim S. H., Kobayashi K., Koike T., Matsuda K., Matsumoto Y., Nagao S., Nagatomi R., Nakada Y., Nakagawa M., Nakamura I., Naruki M., Ozawa S., Raux L., Rogers T. G., Sakaguchi A., Sako H., Sato S., Shiozaki T., Shirotori K., Suzuki K. N., Suzuki S., Tabata M., Taille C. d. L., Takahashi H., Takahashi T., Takahashi T. N., Tamura H., Tanaka M., Tanida K., Tsamalaidze Z., Ukai M., Umetsu H., Wada S., Yamamoto T. O., Yoshida J., and Yoshimura K.

Subjects
Physics, QC1-999
Abstract

A new hyperon-proton scattering experiment, dubbed J-PARC E40, was performed to measure differential cross sections of the Σ+p, Σ−p elastic scatterings and the Σ−p → Λn scattering by identifying a lot of Σ particles in the momentum ranging from 0.4 to 0.8 GeV/c produced by the π±p → K+Σ± reactions. We successfully measured the differential cross sections of these three channels with a drastically improved accuracy with a fine angular step. These new data will become important experimental constraints to improve the theories of the two-body baryon-baryon interactions. Following this success, we proposed a new experiment to measure the differential cross sections and spin observables by using a highly polarized Λ beam for providing quantitative information on the ΛN interaction. The results of three Σp channels and future prospects of the Λp scattering experiment are described.

Published
2022
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10. Essential Bacillus subtilis Genes

Author

Kobayashi, K., Ehrlich, S. D., Albertini, A., Amati, G., Andersen, K. K., Arnaud, M., Asai, K., Ashikaga, S., Aymerich, S., Bessieres, P., Boland, F., Brignell, S. C., Bron, S., Bunai, K., Chapuis, J., Christiansen, L. C., Danchin, A., Débarbouillé, M., Dervyn, E., Deuerling, E., Devine, K., Devine, S. K., Dreesen, O., Errington, J., Fillinger, S., Foster, S. J., Fujita, Y., Galizzi, A., Gardan, R., Eschevins, C., Fukushima, T., Haga, K., Harwood, C. R., Hecker, M., Hosoya, D., Hullo, M. F., Kakeshita, H., Karamata, D., Kasahara, Y., Kawamura, F., Koga, K., Koski, P., Kuwana, R., Imamura, D., Ishimaru, M., Ishikawa, S., Ishio, I., Le Coq, D., Masson, A., Mauël, C., Meima, R., Mellado, R. P., Moir, A., Moriya, S., Nagakawa, E., Nanamiya, H., Nakai, S., Nygaard, P., Ogura, M., Ohanan, T., O'Reilly, M., O'Rourke, M., Pragai, Z., Pooley, H. M., Rapoport, G., Rawlins, J. P., Rivas, L. A., Rivolta, C., Sadaie, A., Sadaie, Y., Sarvas, M., Sato, T., Saxild, H. H., Scanlan, E., Schumann, W., Sekiguchi, J., Sekowska, A., Séror, S. J., Simon, M., Stragier, P., Studer, R., Takamatsu, H., Tanaka, T., Takeuchi, M., Thomaides, H. B., Vagner, V., van Dijl, J. M., Watabe, K., Wipat, A., Yamamoto, H., Yamamoto, M., Yamamoto, Y., Yamane, K., Yata, K., Yoshida, K., Yoshikawa, H., Zuber, U., and Ogasawara, N.

Published
2003

11. Commissioning Runs of J-PARC E16 Experiment

Author

Ichikawa, M., primary, Aoki, K., additional, Arimizu, D., additional, Ashikaga, S., additional, Chang, W.-C., additional, Chujo, T., additional, Ebata, K., additional, En’yo, H., additional, Esumi, S., additional, Hamagaki, H., additional, Honda, R., additional, Kajikawa, S., additional, Kanno, K., additional, Kimura, Y., additional, Kiyomichi, A., additional, Kondo, T.K., additional, Kyan, S., additional, Lin, C.-H., additional, Lin, C.-S., additional, Morino, Y., additional, Murakami, H., additional, Murakami, T.N., additional, Muto, R., additional, Nakai, W., additional, Nakasuga, S., additional, Naruki, M., additional, Nonaka, T., additional, Noumi, H., additional, Ozawa, K., additional, Sakaguchi, T., additional, Sako, H., additional, Sakuma, F., additional, Sato, S., additional, Sawada, S., additional, Sekimoto, M., additional, Shigaki, K., additional, Shirotori, K., additional, Sugimura, H., additional, Takahashi, T.N., additional, Takaura, Y., additional, Tatsumi, R., additional, Tsukui, K., additional, Wang, P.-H., additional, Yahiro, K., additional, Yamaguchi, K.H., additional, and Yokkaichi, S., additional

Published
2023
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12. Measurement of differential cross sections for Σ+p elastic scattering in the momentum range 0.44–0.80 GeV/c

Author

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

Subjects
General Physics and Astronomy, D14, Nuclear Physics
Abstract

We performed a novel Σ⁺+p scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 Σ⁺+p elastic scattering events were identified from 4.9 × 10⁷ tagged Σ⁺+ particles in the Σ⁺+ momentum range 0.44-0.80 GeV/c. The differential cross sections of the Σ⁺+p elastic scattering were derived with much better precision than in previous experiments. The obtained differential cross sections were approximately 2 mb/sr or less, which were not as large as those predicted by the fss2 and FSS models based on the quark cluster model in the short-range region. By performing phase-shift analyses for the obtained differential cross sections, we experimentally derived the phase shifts of the ³S₁ and ¹P₁ channels for the first time. The phase shift of the ³S₁ channel, where a large repulsive core was predicted owing to the Pauli effect between quarks, was evaluated as 20° < |δ₃S₁| < 35°. If the sign of δ₃S₁ is assumed to be negative, the interaction in this channel is moderately repulsive, as the Nijmegen extended-sort-core models predicted., クォーク間の「芯」をとらえた --物質が安定して存在できる理由の理解に貢献--. 京都大学プレスリリース. 2022-09-05.

Published
2022

13. Towards the Measurement of the Mass Modifications of Vector Mesons in a Finite Density Matter

Author

Ozawa, K., primary, Aoki, K., additional, Arimizu, D., additional, Ashikaga, S., additional, Chang, W.C., additional, Chujo, T., additional, Ebata, K., additional, En'yo, H., additional, Esumi, S., additional, Hamagaki, H., additional, Honda, R., additional, Ichikawa, M., additional, Kajikawa, S., additional, Kanno, K., additional, Kimura, Y., additional, Kiyomichi, A., additional, Kondo, T.K., additional, Kyan, S., additional, Lin, C.H., additional, Lin, C.S., additional, Morino, Y., additional, Murakami, H., additional, Murakami, T.N., additional, Muto, R., additional, Nakai, W., additional, Nakasuga, S., additional, Naruki, M., additional, Nonaka, T., additional, Noumi, H., additional, Sakaguchi, T., additional, Sako, H., additional, Sakuma, F., additional, Sato, S., additional, Sawada, S., additional, Sekimoto, M., additional, Shigaki, K., additional, Shirotori, K., additional, Sugimura, H., additional, Takahashi, T.N., additional, Takaura, Y., additional, Tatsumi, R., additional, Tsukui, K., additional, Wang, P.H., additional, Yahiro, K., additional, Yamaguchi, K.H., additional, and Yokkaichi, S., additional

Published
2022
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14. Measurement of differential cross sections for $Σ^+p$ elastic scattering in the momentum range 0.44-0.80 GeV/c

Author

PARC E40 Collaboration, Nanamura, T., Miwa, K., Ahn, J. K., Akazawa, Y., Aramaki, T., Ashikaga, S., Callier, S., Chiga, N., Choi, S. W., Ekawa, H., Evtoukhovitch, P., Fujioka, N., Fujita, M., Gogami, T., Harada, T. K., Hasegawa, S., Hayakawa, S. H., Honda, R., Hoshino, S., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ieiri, M., Ikeda, M., Imai, K., Ishikawa, Y., Ishimoto, S., Jung, W. S., Kajikawa, S., Kanauchi, H., Kanda, H., Kitaoka, T., Kang, B. M., Kawai, H., Kim, S. H., Kobayashi, K., Koike, T., Matsuda, K., Matsumoto, Y., Nagao, S., Nagatomi, R., Nakada, Y., Nakagawa, M., Nakamura, I., Naruki, M., Ozawa, S., Raux, L., Rogers, T. G., Sakaguchi, A., Sakao, T., Sako, H., Sato, S., Shiozaki, T., Shirotori, K., Suzuki, K. N., Suzuki, S., Tabata, M., Taille, C. d. L., Takahashi, H., Takahashi, T., Takahashi, T. N., Tamura, H., Tanaka, M., Tanida, K., Tsamalaidze, Z., Ukai, M., Umetsu, H., Wada, S., Yamamoto, T. O., Yoshida, J., and Yoshimura, K.

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract

We performed a novel $Σ^+ p$ scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 $Σ^+ p$ elastic scattering events were identified from $4.9 \times 10^7$ tagged $Σ^+$ particles in the $Σ^+$ momentum range 0.44 -- 0.80 GeV/$c$. The differential cross sections of the $Σ^+ p$ elastic scattering were derived with much better precision than in previous experiments. The obtained differential cross sections were approximately 2 mb/sr or less, which were not as large as those predicted by the fss2 and FSS models based on the quark cluster model in the short-range region. By performing phase-shift analyses for the obtained differential cross sections, we experimentally derived the phase shifts of the $^3 S_1$ and $^1 P_1$ channels for the first time. The phase shift of the $^3 S_1$ channel, where a large repulsive core was predicted owing to the Pauli effect between quarks, was evaluated as $20^\circ

Published
2022
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15. Precise measurement of differential cross sections of the $\Sigma^-p \to \Lambda n$ reaction in momentum range 470-650 MeV$/c$

Author

Collaboration, J-PARC E40, Miwa, K., Ahn, J. K., Akazawa, Y., Aramaki, T., Ashikaga, S., Callier, S., Chiga, N., Choi, S. W., Ekawa, H., Evtoukhovitch, P., Fujioka, N., Fujita, M., Gogami, T., Harada, T., Hasegawa, S., Hayakawa, S. H., Honda, R., Hoshino, S., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ieiri, M., Ikeda, M., Imai, K., Ishikawa, Y., Ishimoto, S., Jung, W. S., Kajikawa, S., Kanauchi, H., Kanda, H., Kitaoka, T., Kang, B. M., Kawai, H., Kim, S. H., 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, T. G., Sakaguchi, A., Sakao, T., Sako, H., Sato, S., Shiozaki, T., Shirotori, K., Suzuki, K. N., Suzuki, S., Tabata, M., Taille, C. d. L., Takahashi, H., Takahashi, T., Takahashi, T. N., Tamura, H., Tanaka, M., Tanida, K., Tsamalaidze, Z., Ukai, M., Umetsu, H., Wada, S., Yamamoto, T. O., Yoshida, J., Yoshimura, K., Organisation de Micro-Électronique Générale Avancée (OMEGA), École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and J-PARC E40

Subjects
Sigma, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], J-PARC Lab, scattering, interaction, momentum, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], baryon baryon, differential cross section, High Energy Physics::Experiment, hadron, structure, Nuclear Experiment
Abstract

The differential cross sections of the {\Sigma}-p --> {\Lambda} n reaction were measured accurately for the {\Sigma}- momentum (p_{{\Sigma}}) ranging from 470 to 650 MeV/c at the J-PARC Hadron Experimental Facility. Precise angular information about the {\Sigma}-p --> {\Lambda} n reaction was obtained for the first time by detecting approximately 100 reaction events at each angular step of {\Delta}cos{\theta} = 0.1. The obtained differential cross sections show slightly forward-peaking structure in the measured momentum regions.The cross sections integrated for -0.7 < cos{\theta} < 1.0 were obtained as 22.5 +- 0.68 (stat.) +- 0.65 (syst.) mb and 15.8 +-0.83(stat.) +- 0.52 (syst.) mb for 470, Comment: arXiv admin note: text overlap with arXiv:2104.13608

Published
2021

16. First experimental determination of the radiative-decay probability of the [formula omitted] state in 12C for estimating the triple alpha reaction rate in high temperature environments

Author

Tsumura, M., Kawabata, T., Takahashi, Y., Adachi, S., Akimune, H., Ashikaga, S., Baba, T., Fujikawa, Y., Fujimura, H., Fujioka, H., Furuno, T., Hashimoto, T., Harada, T., Ichikawa, M., Inaba, K., Ishii, Y., Itagaki, N., Itoh, M., Iwamoto, C., Kobayashi, N., Koshikawa, A., Kubono, S., Maeda, Y., Matsuda, Y., Matsumoto, S., Miki, K., Morimoto, T., Murata, M., Nanamura, T., Ou, I., Sakaguchi, S., Sakaue, A., Sferrazza, M., Suzuki, K.N., Takeda, T., Tamii, A., Watanabe, K., Watanabe, Y.N., Yoshida, H.P., and Zenihiro, J.

Published
2021
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17. First experimental determination of the radiative-decay probability of the 31− state in ¹²C for estimating the triple alpha reaction rate in high temperature environments

Author

Tsumura, M., Kawabata, T., Takahashi, Y., Adachi, S., Akimune, H., Ashikaga, S., Baba, T., Fujikawa, Y., Fujimura, H., Fujioka, H., Furuno, T., Hashimoto, T., Harada, T., Ichikawa, M., Inaba, K., Ishii, Y., Itagaki, N., Itoh, M., Iwamoto, C., Kobayashi, N., Koshikawa, A., Kubono, S., Maeda, Y., Matsuda, Y., Matsumoto, S., Miki, K., Morimoto, T., Murata, M., Nanamura, T., Ou, I., Sakaguchi, S., Sakaue, A., Sferrazza, M., Suzuki, K.N., Takeda, T., Tamii, A., Watanabe, K., Watanabe, Y.N., Yoshida, H.P., and Zenihiro, J.

Subjects
Radiative-decay probability, Triple alpha reaction, Nucleosynthesis
Abstract

The triple alpha reaction is one of the most important reactions in the nuclear astrophysics. However, its reaction rate in high temperature environments at T₉>2 was still uncertain. One of the major origins of the uncertainty was that the radiative-decay probability of the 3⁻₁ state in ¹²C was unknown. In the present work, we have determined the radiative-decay probability of the 3⁻₁ state to be 1.3[+1.2][-1.1] × 10⁻⁶ by measuring the ¹H(¹²C, ¹²Cp) reaction for the first time, and derived the triple alpha reaction rate in high temperature environments from the measured radiative-decay probability. The present result suggests that the 3⁻₁ state noticeably enhances the triple alpha reaction rate although the contribution from the 3⁻₁ state had been assumed to be small.

Published
2021

18. Revised triple alpha reaction rate in high temperature environments

Author

Tsumura, Miho, Kawabata, Takahiro, Takahashi, Y., Adachi, Satoshi, Akimune, H, Ashikaga, S., Baba, T., Fujikawa, Y., Fujimura, H., Fujioka, H., Furuno, Tatsuya, Hashimoto, H., Harada, T., Ichikawa, M., Inaba, K., Ishii, Y., Itagaki, N., Itoh, M., Iwamoto, C., Kobayashi, N., Kubono, Shigeru, Maeda, Y., Matsuda, Y., Matsumoto, S., Miki, K., Morimoto, T., Murata, M., Nanamura, T., Ou, I., Sakaguchi, S., Sferrazza, Michele, Suzuki, K.N., Takeda, Tae, Tamii, A., Watanabe, Yoshihisa, Yoshida, H.P., and Zenihiro, J.

Subjects
Physique atomique et nucléaire
Abstract

info:eu-repo/semantics/published

Published
2021

19. Measurement of the differential cross sections of the Sigma-p elastic scattering in momentum range of 470 to 850 MeV/c

Author

PARC E40 Collaboration, Miwa, K., Ahn, J. K., Akazawa, Y., Aramaki, T., Ashikaga, S., Callier, S., Chiga, N., Choi, S. W., Ekawa, H., Evtoukhovitch, P., Fujioka, N., Fujita, M., Gogami, T., Harada, T., Hasegawa, S., Hayakawa, S. H., Honda, R., Hoshino, S., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ieiri, M., Ikeda, M., Imai, K., Ishikawa, Y., Ishimoto, S., Jung, W. S., Kajikawa, S., Kanauchi, H., Kanda, H., Kitaoka, T., Kang, B. M., Kawai, H., Kim, S. H., 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, T. G., Sakaguchi, A., Sakao, T., Sako, H., Sato, S., Shiozaki, T., Shirotori, K., Suzuki, K. N., Suzuki, S., Tabata, M., Taille, C. d. L., Takahashi, H., Takahashi, T., Takahashi, T. N., Tamura, H., Tanaka, M., Tanida, K., Tsamalaidze, Z., Ukai, M., Umetsu, H., Wada, S., Yamamoto, T. O., Yoshida, J., and Yoshimura, K.

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

A high statistics $\Sigma p$ scattering experiment has been performed at the J-PARC Hadron Experimental Facility. Data for momentum-tagged $\Sigma^{-}$ running in a liquid hydrogen target were accumulated by detecting the $\pi^{-}p \to K^{+}\Sigma^{-}$ reaction with a high intensity $\pi^{-}$ beam of 20 M/spill. Differential cross sections of the $\Sigma^{-}p$ elastic scattering were derived with a drastically improved accuracy by identifying the largest statistics of about 4,500 events from 1.72 $\times$ $10^{7}$ $\Sigma^{-}$. The derived differential cross section shows a clear forward-peaking angular distribution for a $\Sigma^{-}$ momentum range from 470 to 850 MeV/$c$. The accurate data will impose a strong constraint on the theoretical models of the baryon-baryon interactions.

Published
2021

20. First experimental determination of the radiative-decay probability of the State in C for estimating the triple alpha reaction rate in high temperature environments

Author

Tsumura, M., Kawabata, T., Takahashi, Y., Adachi, S., Akimune, H., Ashikaga, S., Baba, T., Fujikawa, Y., Fujimura, H., Fujioka, H., Furuno, T., Hashimoto, T., Harada, T., Ichikawa, M., Inaba, K., Ishii, Y., Itagaki, N., Itoh, M., Iwamoto, C., Kobayashi, N., Koshikawa, A., Kubono, S., Maeda, Y., Matsuda, Y., Matsumoto, S., Miki, K., Morimoto, T., Murata, M., Nanamura, T., Ou, I., Sakaguchi, S., Sakaue, A., Sferrazza, M., Suzuki, K.N., Takeda, T., Tamii, A., Watanabe, K., Watanabe, Y.N., Yoshida, H.P., and Zenihiro, J.

Abstract

The triple alpha reaction is one of the most important reactions in the nuclear astrophysics. However, its reaction rate in high temperature environments at T9> 2 was still uncertain. One of the major origins of the uncertainty was that the radiative-decay probability of the 31− state in $^{12}$C was unknown. In the present work, we have determined the radiative-decay probability of the 31− state to be 1.3−1.1+1.2×10−6 by measuring the $^{1}$H($^{12}$C,$^{12}$Cp) reaction for the first time, and derived the triple alpha reaction rate in high temperature environments from the measured radiative-decay probability. The present result suggests that the 31− state noticeably enhances the triple alpha reaction rate although the contribution from the 31− state had been assumed to be small.

Published
2021

21. Measurement of the differential cross sections of the Σ−p elastic scattering in momentum range 470 to 850 MeV/c

Author

Miwa, K., Ahn, J.K., Akazawa, Y., Aramaki, T., Ashikaga, S., Callier, S., Chiga, N., Choi, S.W., Ekawa, H., Evtoukhovitch, P., Fujioka, N., Fujita, M., Gogami, T., Harada, T., Hasegawa, S., Hayakawa, S.H., Honda, R., Hoshino, S., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ieiri, M., Ikeda, M., Imai, K., Ishikawa, Y., Ishimoto, S., Jung, W.S., Kajikawa, S., Kanauchi, H., Kanda, H., Kitaoka, T., Kang, B.M., Kawai, H., Kim, S.H., 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, T.G., Sakaguchi, A., Sakao, T., Sako, H., Sato, S., Shiozaki, T., Shirotori, K., Suzuki, K.N., Suzuki, S., Tabata, M., De La Taille, C., Takahashi, H., Takahashi, T.N., Tamura, H., Tanaka, M., Tanida, K., Tsamalaidze, Z., Ukai, M., Umetsu, H., Wada, S., Yamamoto, T.O., Yoshida, J., Yoshimura, K., Organisation de Micro-Électronique Générale Avancée (OMEGA), École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and J-PARC E40

Subjects
differential cross section: measured, hydrogen: liquid: target, statistics, +K%2B+Sigma%22">pi- p --> K+ Sigma, J-PARC Lab, p Sigma: elastic scattering, nucleon hyperon: interaction, angular distribution, pi: beam, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], baryon baryon: interaction, experimental results
Abstract

International audience; A high statistics Σp scattering experiment is performed at the J-PARC Hadron Experimental Facility. Momentum-tagged Σ−s running in a liquid hydrogen target are accumulated by detecting the π−p→K+Σ− reaction with a high intensity π− beam of 20 M/spill. The differential cross sections of the Σ−p elastic scattering were derived with a drastically improved accuracy by identifying approximately 4500 events from 1.72×107Σ−. The derived differential cross section shows a clear forward-peaking angular distribution for a Σ− momentum range from 470 to 850 MeV/c. The accurate data will impose a strong constraint on the theoretical models of the baryon-baryon interactions.

Published
2021

22. Precise measurement of differential cross sections of the ��-p --> �� n reaction in momentum range 470-650 MeV/c

Author

PARC E40 Collaboration, Miwa, K., Ahn, J. K., Akazawa, Y., Aramaki, T., Ashikaga, S., Callier, S., Chiga, N., Choi, S. W., Ekawa, H., Evtoukhovitch, P., Fujioka, N., Fujita, M., Gogami, T., Harada, T., Hasegawa, S., Hayakawa, S. H., Honda, R., Hoshino, S., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ieiri, M., Ikeda, M., Imai, K., Ishikawa, Y., Ishimoto, S., Jung, W. S., Kajikawa, S., Kanauchi, H., Kanda, H., Kitaoka, T., Kang, B. M., Kawai, H., Kim, S. H., 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, T. G., Sakaguchi, A., Sakao, T., Sako, H., Sato, S., Shiozaki, T., Shirotori, K., Suzuki, K. N., Suzuki, S., Tabata, M., Taille, C. d. L., Takahashi, H., Takahashi, T., Takahashi, T. N., Tamura, H., Tanaka, M., Tanida, K., Tsamalaidze, Z., Ukai, M., Umetsu, H., Wada, S., Yamamoto, T. O., Yoshida, J., and Yoshimura, K.

Subjects
Nuclear Theory (nucl-th), FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract

The differential cross sections of the ��-p --> �� n reaction were measured accurately for the ��- momentum (p_{��}) ranging from 470 to 650 MeV/c at the J-PARC Hadron Experimental Facility. Precise angular information about the ��-p --> �� n reaction was obtained for the first time by detecting approximately 100 reaction events at each angular step of ��cos�� = 0.1. The obtained differential cross sections show slightly forward-peaking structure in the measured momentum regions.The cross sections integrated for -0.7 < cos�� < 1.0 were obtained as 22.5 +- 0.68 (stat.) +- 0.65 (syst.) mb and 15.8 +-0.83(stat.) +- 0.52 (syst.) mb for 470, arXiv admin note: text overlap with arXiv:2104.13608

Published
2021
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23. First experimental determination of the radiative-decay probability of the 31− state in 12C for estimating the triple alpha reaction rate in high temperature environments

Author

Tsumura, M., primary, Kawabata, T., additional, Takahashi, Y., additional, Adachi, S., additional, Akimune, H., additional, Ashikaga, S., additional, Baba, T., additional, Fujikawa, Y., additional, Fujimura, H., additional, Fujioka, H., additional, Furuno, T., additional, Hashimoto, T., additional, Harada, T., additional, Ichikawa, M., additional, Inaba, K., additional, Ishii, Y., additional, Itagaki, N., additional, Itoh, M., additional, Iwamoto, C., additional, Kobayashi, N., additional, Koshikawa, A., additional, Kubono, S., additional, Maeda, Y., additional, Matsuda, Y., additional, Matsumoto, S., additional, Miki, K., additional, Morimoto, T., additional, Murata, M., additional, Nanamura, T., additional, Ou, I., additional, Sakaguchi, S., additional, Sakaue, A., additional, Sferrazza, M., additional, Suzuki, K.N., additional, Takeda, T., additional, Tamii, A., additional, Watanabe, K., additional, Watanabe, Y.N., additional, Yoshida, H.P., additional, and Zenihiro, J., additional

Published
2021
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24. J-PARC E07: Systematic Study of Double Strangeness System with Hybrid Emulsion Method

Author

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

Published
2021
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25. Establishment of a Modern Experimental Technique of a \(\Sigma p\) Scattering Experiment at J-PARC

Author

Akazawa, Yuya, primary, Ahn, J. K., additional, Aramaki, T., additional, Ashikaga, S., additional, Callier, S., additional, Chiga, N., additional, Choi, S. W., additional, Ekawa, H., additional, Evtoukhovitch, P., additional, Fujioka, N., additional, Fujita, M., additional, Gogami, T., additional, Harada, T., additional, Hasegawa, S., additional, Hayakawa, S., additional, Honda, R., additional, Hoshino, S., additional, Hosomi, K., additional, Ichikawa, M., additional, Ichikawa, Y., additional, Ieiri, M., additional, Ikeda, M., additional, Imai, K., additional, Ishikawa, Y., additional, Ishimoto, S., additional, Jung, W. S., additional, Kajikawa, S., additional, Kanauchi, H., additional, Kanda, H., additional, Kang, B. M., additional, Kawai, H., additional, Kim, S. H., additional, Kobayashi, K., additional, Koike, T., additional, Matsuda, K., additional, Matsumoto, Y., additional, Miwa, K., additional, Nagao, S., additional, Nagatomi, R., additional, Nakada, Y., additional, Nakagawa, M., additional, Nakamura, I., additional, Nanamura, T., additional, Naruki, M., additional, Ozawa, S., additional, Raux, L., additional, Rogers, T., additional, Sakaguchi, A., additional, Sakao, T., additional, Sako, H., additional, Sato, S., additional, Shiozaki, T., additional, Shirotori, K., additional, Suzuki, K. N., additional, Suzuki, S., additional, Tabata, M., additional, Taille, C. d. L., additional, Takahashi, H., additional, Takahashi, T., additional, Takahashi, T. N., additional, Tamura, H., additional, Tanaka, M., additional, Tanida, K., additional, Tsamalaidze, Z., additional, Umetsu, H., additional, Ukai, M., additional, Yamamoto, T. O., additional, Yoshida, J., additional, and Yoshimura, K., additional

Published
2021
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26. Study of \(\Lambda \) Identification Method by the \(\pi ^{ - }p \to K^{0}\Lambda \) Reaction for a \(\Lambda p\) Scattering Experiment at J-PARC

Author

Sakao, T., primary, Ahn, J. K., additional, Akazawa, Y., additional, Aramaki, T., additional, Ashikaga, S., additional, Callier, S., additional, Choi, S. W., additional, Evtoukhovitch, P., additional, Fujioka, N., additional, Fujita, M., additional, Gogami, T., additional, Harada, T., additional, Hasegawa, S., additional, Hayakawa, S. H., additional, Honda, R., additional, Hoshino, S., additional, Hosomi, K., additional, Ichikawa, M., additional, Ichikawa, Y., additional, Ikeda, M., additional, Imai, K., additional, Ishikawa, Y., additional, Ishimoto, S., additional, Jung, W. S., additional, Kajikawa, S., additional, Kanauchi, H., additional, Kanda, H., additional, Kang, B. M., additional, Kawai, H., additional, Kim, S. H., additional, Kobayashi, K., additional, Matsuda, K., additional, Matsumoto, Y., additional, Miwa, K., additional, Nagao, S., additional, Nagatomi, R., additional, Nakada, Y., additional, Nakagawa, M., additional, Nakamura, I., additional, Nanamura, T., additional, Naruki, M., additional, Ozawa, S., additional, Raux, L., additional, Rogers, T., additional, Sakaguchi, A., additional, Sako, H., additional, Sato, S., additional, Shirotori, K., additional, Suzuki, K. N., additional, Suzuki, S., additional, Tabata, M., additional, Taille, C. d. L., additional, Takahashi, H., additional, Takahashi, T. N., additional, Takahashi, T., additional, Tanaka, M., additional, Tanida, K., additional, Tamura, H., additional, Tsamalaidze, Z., additional, Ukai, M., additional, Umetsu, H., additional, Yamamoto, T. O., additional, Yoshida, J., additional, and Yoshimura, K., additional

Published
2021
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27. J-PARC-HI Collaboration

Author

Ahn, J.K., primary, Akamatsu, Y., additional, Asakawa, M., additional, Ashikaga, S., additional, Busch, O., additional, Chishiro, E., additional, Chiu, M., additional, Chujo, T., additional, Cirkovic, P., additional, Csörgő, T., additional, David, G., additional, Devetak, D., additional, Djordjevic, M., additional, Esumi, S., additional, Fujii, H., additional, Fukushima, K., additional, Garg, P., additional, Gunji, T., additional, Hachiya, T., additional, Hamagaki, H., additional, Harada, H., additional, Harada, M., additional, Hasegawa, S., additional, Hashimoto, Y., additional, Hatsuda, T., additional, Hayashi, N., additional, Hirano, K., additional, Hirano, T., additional, Hong, B.S., additional, Hotchi, H., additional, Hwang, S.H., additional, Ichikawa, Y., additional, Ichisawa, T., additional, Imai, K., additional, Inaba, M., additional, Ishii, K., additional, Itakura, K., additional, Ito, T., additional, Kamiya, J., additional, Kaneta, M., additional, Kato, H., additional, Kato, S., additional, Kikuzawa, N., additional, Kim, B.C., additional, Kim, E.J., additional, Kimura, T., additional, Kinsho, M., additional, Kitamura, R., additional, Kitazawa, M., additional, Kondo, Y., additional, Kovalenko, A., additional, Kuboki, H., additional, Kurimoto, Y., additional, Liu, Y., additional, Luo, X., additional, Maruyama, T., additional, Meigo, S., additional, Miake, Y., additional, Miura, A., additional, Miyao, T., additional, Milosevic, J., additional, Mishra, D., additional, Morishita, T., additional, Morita, K., additional, Morita, Y., additional, Moriya, K., additional, Murase, K., additional, Muto, R., additional, Nadjdjerdj, L., additional, Nagamiya, S., additional, Nakamura, A., additional, Nakamura, T., additional, Nakanoya, T., additional, Nara, Y., additional, Naruki, M., additional, Niki, K., additional, Nishio, K., additional, Nonaka, C., additional, Nonaka, T., additional, Ogino, M., additional, Oguri, H., additional, Ohmori, C., additional, Ohnishi, A., additional, Oka, M., additional, Okabe, A., additional, Okamura, M., additional, Oyama, K., additional, Ozawa, K., additional, Saha, P.K., additional, Saito, T.R., additional, Sakaguchi, A., additional, Sakaguchi, T., additional, Sakai, S., additional, Sako, H., additional, Sato, K., additional, Sato, S., additional, Sato, Y., additional, Sawada, S., additional, Shibata, T., additional, Shigaki, K., additional, Shimansky, S., additional, Shimokawa, T., additional, Shimomura, M., additional, Shindo, K., additional, Shinozaki, S., additional, Shirakata, M., additional, Shobuda, Y., additional, Stojanovic, M., additional, Suganuma, K., additional, Sugimura, H., additional, Sugiyama, Y., additional, Takahashi, H., additional, Takayanagi, T., additional, Takeuchi, Y., additional, Tamura, F., additional, Tamura, H., additional, Tamura, J., additional, Tanaka, K.H., additional, Tanaka, Y., additional, Tani, N., additional, Tanida, K., additional, Tomisawa, M., additional, Toyama, T., additional, Watanabe, Y., additional, Xu, N., additional, Yamamoto, K., additional, Yamamoto, M., additional, Yokkaichi, S., additional, Yoo, I.K., additional, Yoshii, M., additional, and Yoshimoto, M., additional

Published
2021
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28. Study of ∑N interaction from the ∑p scattering experiment at J-PARC

Author

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

Published
2020
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29. Operation of Multi-MPPC System for Cylindrical Scintillation Fiber Tracker

Author

Akazawa, Yuya, primary, Ahn, J. K., additional, Aramaki, T., additional, Ashikaga, S., additional, Callier, S., additional, Chiga, N., additional, Choi, S. W., additional, Ekawa, H., additional, Evtoukhovitch, P., additional, Fujioka, N., additional, Fujita, M., additional, Hasegawa, S., additional, Hayakawa, S., additional, Honda, R., additional, Hoshino, S., additional, Hosomi, K., additional, Ichikawa, M., additional, Ichikawa, Y., additional, Ieiri, M., additional, Ikeda, M., additional, Imai, K., additional, Ishikawa, Y., additional, Ishimoto, S., additional, Jung, W. S., additional, Kanauchi, H., additional, Kanda, H., additional, Kang, B. M., additional, Kawai, H., additional, Kim, S. H., additional, Kobayashi, K., additional, Koike, T., additional, Matsuda, K., additional, Matsumoto, Y., additional, Miwa, K., additional, Nagatomi, R., additional, Nakada, Y., additional, Nakagawa, M., additional, Nakamura, I., additional, Nanamura, T., additional, Naruki, M., additional, Ozawa, S., additional, Raux, L., additional, Sakaguchi, A., additional, Sako, H., additional, Sato, S., additional, Shiozaki, T., additional, Shirotori, K., additional, Suzuki, K., additional, Suzuki, S., additional, Tabata, M., additional, Taille, C. d. L., additional, Takahashi, H., additional, Takahashi, T., additional, Takahashi, T. N., additional, Tamura, H., additional, Tsamalaidze, Z., additional, Umetsu, H., additional, Ukai, M., additional, Yamamoto, T. O., additional, and Yoshimura, K., additional

Published
2019
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30. Status of the J-PARC E07, Systematic Study of Double Strangeness Nuclei with the Hybrid Emulsion Method

Author

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

Published
2019
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31. High-rate performance of a time projection chamber for an H-dibaryon search experiment at J-PARC

Author

Kim, S.H., primary, Ichikawa, Y., additional, Sako, H., additional, Ahn, J.K., additional, Akaishi, T., additional, Ashikaga, S., additional, Choi, S.W., additional, Ekawa, H., additional, Hasegawa, S., additional, Hayakawa, S., additional, Jung, W.S., additional, Kang, B.M., additional, Lee, J.Y., additional, Nanamura, T., additional, Sato, S., additional, Shirotori, K., additional, Suzuki, K., additional, Tanida, K., additional, Yang, S.B., additional, and Yoshida, J., additional

Published
2019
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32. Study of $\Sigma$N interaction from the $\Sigma$p scattering experiment at J-PARC

Author

Miwa, K., Ahn, J.K., Akazawa, Y., Aramaki, T., Ashikaga, S., Callier, S., Chiga, N., Choi, S.W., Ekawa, H., Evtoukhovitch, P., Fujioka, N., Fujita, M., Gogami, T., Harada, T., Hasegawa, S., Hayakawa, S.H., Honda, R., Hoshino, S., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ieiri, M., Ikeda, M., Imai, K., Ishikawa, Y., Ishimoto, S., Jung, W.S., Kajikawa, S., Kanauchi, H., Kanda, H., Kang, B.M., Kawai, H., Kim, S.H., 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, T., Sakaguchi, A., Sakao, T., Sako, H., Sato, S., Shiozaki, T., Shirotori, K., Suzuki, K.N., Suzuki, S., Tabata, M., De La Taille, C., Takahashi, H., Takahashi, T.N., Tamura, H., Tanaka, M., Tanida, K., Tsamalaidze, Z., Ukai, M., Umetsu, H., Yamamoto, T.O., Yoshida, J., Yoshimura, K., Organisation de Micro-Électronique Générale Avancée (OMEGA), and École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
hydrogen: liquid: target, pi-: beam, statistics, J-PARC Lab, p Sigma: scattering, elastic scattering, Physics::Accelerator Physics, inelastic scattering, nucleon Sigma: interaction, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], hyperon: beam, conference, experimental results
Abstract

International audience; A high statistics ∑p scattering experiment has been performed at the K1.8 beamline in the J-PARC Hadron Experimental Facility. Data for momentum-tagged ∑− beam running in a liquid hydrogen target were accumulated by detecting the reaction with a high intensity π− beam of 20 M/spill. The number of the Σ− beam was about 1.7 × 107 in total. The ∑−ρ elastic scattering and the ∑−p → Λn inelastic scattering events were successfully observed with about 100 times larger statistics than that in past experiments.

Published
2019

33. Trigger Merging Module for the J-PARC E16 Experiment

Author

Ichikawa, M., primary, Takahashi, T. N., additional, Aoki, K., additional, Ashikaga, S., additional, Hamada, E., additional, Honda, R., additional, Igarashi, Y., additional, Ikeno, M., additional, Kawama, D., additional, Naruki, M., additional, Ozawa, K., additional, Sendai, H., additional, Suzuki, K. N., additional, Tanaka, M., additional, Uchida, T., additional, and Yokkaichi, S., additional

Published
2019
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34. J-PARC-HI Collaboration

Author

Ahn, J.K., primary, Akamatsu, Y., additional, Asakawa, M., additional, Ashikaga, S., additional, Busch, O., additional, Chiu, M., additional, Chujo, T., additional, Cirkovic, P., additional, Csörgő, T., additional, David, G., additional, Devetak, D., additional, Dordevic, M., additional, Esumi, S., additional, Fujii, H., additional, Fukushima, K., additional, Garg, P., additional, Gunji, T., additional, Hachiya, T., additional, Hamagaki, H., additional, Harada, H., additional, Harada, M., additional, Hasegawa, S., additional, Hatsuda, T., additional, Hirano, T., additional, Hong, B., additional, Hotchi, H., additional, Hwang, S.H., additional, Ichikawa, Y., additional, Ichisawa, T., additional, Imai, K., additional, Inaba, M., additional, Itakura, K., additional, Kamiya, J., additional, Kaneta, M., additional, Kato, H., additional, Kato, S., additional, Kim, B.C., additional, Kim, E.J., additional, Kinsho, M., additional, Kitazawa, M., additional, Kovalenko, A., additional, Liu, Y., additional, Luo, X., additional, Maruyama, T., additional, Miake, Y., additional, Milosevic, J., additional, Mishra, D., additional, Morita, K., additional, Murase, K., additional, Nadjdjerdj, L., additional, Nagamiya, S., additional, Nakamura, A., additional, Nakamura, T., additional, Nara, Y., additional, Naruki, M., additional, Nishio, K., additional, Nonaka, C., additional, Nonaka, T., additional, Ogino, M., additional, Ohnishi, A., additional, Oka, M., additional, Okabe, A., additional, Okamura, M., additional, Oyama, K., additional, Ozawa, K., additional, Saha, P.K., additional, Saito, T., additional, Sakaguchi, A., additional, Sakaguchi, T., additional, Sakai, S., additional, Sako, H., additional, Sato, K., additional, Sato, S., additional, Sawada, S., additional, Shigaki, K., additional, Shimansky, S., additional, Shimomura, M., additional, Shobuda, Y., additional, Stojanovic, M., additional, Sugimura, H., additional, Takeuchi, Y., additional, Tamura, F., additional, Tamura, H., additional, Tamura, J., additional, Tanaka, K.H., additional, Tanaka, Y., additional, Tani, N., additional, Tanida, K., additional, Watanabe, Y., additional, Xu, N., additional, Yamamoto, M., additional, Yokkaichi, S., additional, Yoo, I.K., additional, and Yoshimoto, M., additional

Published
2019
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35. Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment

Author

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

Published
2019
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36. Σp scattering experiment at J-PARC – results of commissioning run –

Author

Miwa, K., primary, Ahn, J. K., additional, Akazawa, Y., additional, Aramaki, T., additional, Ashikaga, S., additional, Callier, S., additional, Chiga, N., additional, Choi, S. W., additional, Ekawa, H., additional, Evtoukhovitch, P., additional, Fujioka, N., additional, Fujita, M., additional, Hasegawa, S., additional, Hayakawa, S., additional, Honda, R., additional, Hoshino, S., additional, Hosomi, K., additional, Ichikawa, M., additional, Ichikawa, Y., additional, Ieiri, M., additional, Ikeda, M., additional, Imai, K., additional, Ishikawa, Y., additional, Ishimoto, S., additional, Jung, W. S., additional, Kanauchi, H., additional, Kanda, H., additional, Kang, B. M., additional, Kawai, H., additional, Kim, S. H., additional, Kobayashi, K., additional, Koike, T., additional, Matsuda, K., additional, Matsumoto, Y., additional, Nagatomi, R., additional, Nakada, Y., additional, Nakagawa, M., additional, Nakamura, I., additional, Nanamura, T., additional, Naruki, M., additional, Ozawa, S., additional, Raux, L., additional, Sakaguchi, A., additional, Sako, H., additional, Sato, S., additional, Shiozaki, T., additional, Shirotori, K., additional, Suzuki, K., additional, Suzuki, S., additional, Tabata, M., additional, Taille, C. D. L., additional, Takahashi, H., additional, Takahashi, T., additional, Takahashi, T. N., additional, Tamura, H., additional, Tsamalaidze, Z., additional, Umetsu, H., additional, Ukai, M., additional, Yamamoto, T. O., additional, and Yoshimura, K., additional

Published
2019
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37. 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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38. Data acquisition system in Run-0a for the J-PARC E16 experiment

Author

Takahashi, T. N., Kanno, K., Nakai, W., Yokkaichi, S., Kawama, D., Aoki, K., Hamada, E., Ikeno, M., Ozawa, K., Morino, Y., Sendai, H., Tanaka, M., Uchida, T., Ashikaga, S., Ichikawa, M., Nakasuga, S., Naruki, M., Suzuki, K. N., Takaura, Y., Wen-Chen Chang, Lin, C. S., Lin, C. H., Honda, R., Kajikawa, S., Kondo, T., Murakami, T., Obara, Y., Sako, H., and Sato, S.

Subjects
Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det)
Abstract

J-PARC E16 is an experiment to examine the origin of hadron mass through a systematic measurement of spectral changes of vector mesons in nuclei. The measurement of $e^{+}e^{-}$ pairs from the decay of vector mesons will provide the information of the partial restoration of the chiral symmetry in a normal nuclear density. To resolve a pulse pile-up and achieve good discrimination of $e^{\pm}$ from the background of a reaction rate of an order of 10 MHz, the data acquisition (DAQ) system uses waveform sampling chips of APV25 and DRS4. The trigger rate and data rate are expected to be 1 kHz and 130--330 MiB/s, respectively. The DAQ system for readout of APV25 and DRS4 were developed, where events were synchronized by common trigger and tag data. The first commissioning in beam, called Run-0a, was performed in June 2020 with about 1/4 of the designed setup. The DAQ worked with a trigger rate of 300 Hz in the Run-0a and the main bottleneck was a large data size of APV25. Further optimization of the DAQ system will improve the performance., IEEE Real Time 2020 Conference, 4 pages, 6 figures

40. 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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41. 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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42. Cold-induced vasodilation comparison between Bangladeshi and Japanese natives.

Author

Khatun A, Ashikaga S, Nagano H, Hasib MA, and Taimura A

Subjects
Adult, Anthropology, Physical, Asian People, Bangladesh, Cold Temperature, Fingers physiology, Humans, Japan, Male, Touch physiology, Young Adult, Skin Temperature physiology, Vasodilation physiology
Abstract

Background: The human thermoregulation system responds to changes in environmental temperature, so humans can self-adapt to a wide range of climates. People from tropical and temperate areas have different cold tolerance. This study compared the tolerance of Bangladeshi (tropical) and Japanese (temperate) people to local cold exposure on cold-induced vasodilation (CIVD)., Methods: Eight Bangladeshi males (now residing in Japan) and 14 Japanese males (residing in Japan) participated in this study. All are sedentary, regular university students. The Bangladeshi subject's duration of stay in Japan was 2.50 ± 2.52 years. The subject's left hand middle finger was immersed in 5 °C water for 20 min to assess their CIVD response (the experiment was conducted in an artificial climate chamber controlled at 25 °C with 50% RH)., Results: Compared with the Bangladeshi (BD) group, the Japanese (JP) group displayed some differences. There were significant differences between the BD and JP groups in temperature before immersion (TBI), which were 33.04 ± 1.98 and 34.62 ± 0.94 °C, and time of temperature rise (TTR), which were 5.35 ± 0.82 and 3.72 ± 0.68 min, respectively. There was also a significant difference in the time of sensation rise (TSR) of 8.69 ± 6.49 and 3.26 ± 0.97 min between the BD and JP groups, respectively (P < 0.05). Moreover, the JP group showed a quick TTR after finishing immersion., Conclusions: The Japanese group (temperate) has a higher tolerance to local cold exposure than the Bangladeshi group (tropical) evaluated by the CIVD test.

Published
2016
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43. Glycolic acid chemical peeling improves inflammatory acne eruptions through its inhibitory and bactericidal effects on Propionibacterium acnes.

Author

Takenaka Y, Hayashi N, Takeda M, Ashikaga S, and Kawashima M

Subjects
Adult, Agar, Bacterial Load, Female, Glycolates administration & dosage, Humans, Keratolytic Agents administration & dosage, Propionibacterium acnes isolation & purification, Acne Vulgaris microbiology, Acne Vulgaris therapy, Chemexfoliation methods, Propionibacterium acnes drug effects
Abstract

Glycolic acid chemical peeling is effective for treating comedones, and some clinical data show that it also improves inflammatory eruptions. The purpose of this study was to identify the mechanism of glycolic acid chemical peeling to improve inflammatory acne. To assess growth inhibitory and bactericidal effects of glycolic acid on Propionibacterium acnes in vitro, we used an agar diffusion method and a time-kill method. To reveal bactericidal effects in vivo, we established an agar-attached method which correlated well with the ordinary swab-wash method, and we used the agar-attached method to compare the numbers of propionibacteria on the cheek treated with glycolic acid chemical peeling. Our results show that 30% glycolic acid (at pH 1.5, 3.5 and 5.5) formed growth inhibitory circles in the agar diffusion method, but the diameters of those circles were smaller than with 1% nadifloxacin lotion or 1% clindamycin gel. In the time-kill method, 30% glycolic acid (at pH 1.5 and 3.5) or 1% nadifloxacin lotion reduced the number of P. acnes to less than 100 CFU/mL within 5 min. In contrast, in 30% glycolic acid (at pH 5.5) or in 1% clindamycin gel, P. acnes survived for more than 4 h. Chemical peeling with 35% glycolic acid (at pH 1.2) decreased the number of propionibacteria on the cheeks of patients compared with untreated controls (P < 0.01). Our results demonstrate that glycolic acid has moderate growth inhibitory and bactericidal effects on P. acnes, and that chemical peeling with glycolic acid works on inflammatory acne via those effects., (© 2011 Japanese Dermatological Association.)

Published
2012
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44. Natural genetic competence in Bacillus subtilis natto OK2.

Author

Ashikaga S, Nanamiya H, Ohashi Y, and Kawamura F

Subjects
Bacterial Proteins biosynthesis, Gene Expression, Heat-Shock Proteins genetics, Lac Operon, Transcription Factors biosynthesis, Transformation, Bacterial, Bacillus subtilis genetics, Bacterial Proteins genetics, Transcription Factors genetics
Abstract

We isolated a Bacillus subtilis natto strain, designated OK2, from a lot of commercial fermented soybean natto and studied its ability to undergo natural competence development using a comG-lacZ fusion at the amyE locus. Although transcription of the late competence genes was not detected in the B. subtilis natto strain OK2 during competence development, these genes were constitutively transcribed in the OK2 strain carrying either the mecA or the clpC mutation derived from B. subtilis 168. In addition, both OK2 mutants exhibited high transformation frequencies, comparable with that observed for B. subtilis 168. Moreover, as expected from these results, overproduction of ComK derived from strain 168 in strain OK2 resulted in a high transformation frequency as well as in induction of the late competence genes. These results clearly indicated that ComK produced in both the mecA and clpC mutants of strain OK2 (ComK(OK2)) could activate the transcription of the whole set of late competence genes and suggested that ComK(OK2) was not activated in strain OK2 during competence development. We therefore sequenced the comS gene of OK2 and compared it with that of 168. The comS(OK2) had a single-base change, resulting in the replacement of Ser (strain 168) by Cys (strain OK2) at position 11.

Published
2000
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