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140 results on '"Kanauchi, H."'

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. First observation of a nuclear $s$-state of $\Xi$ hypernucleus, $^{15}_{\Xi}{\rm C}$

Author

Yoshimoto, M., Ahn, J. K., Bassalleck, B., Ekawa, H., Endo, Y., Fujita, M., Han, Y., Hashimoto, T., Hayakawa, S. H., Hicks, K., Hoshino, K., Hoshino, S., Hwang, S. H., Ichikawa, Y., Ichikawa, M., Imai, K., Ishikawa, Y., Kanauchi, H., Kasagi, A., Kim, S. H., Kinbara, S., Lin, P. M., Ma, T. L., Miwa, K., Moe, A. T., Nagase, Y., Nakazawa, K., Nanamura, T., Naruki, M., Nyaw, A. N. L., Pochodzalla, J., Sako, H., Sato, S., Soe, M. M., Soe, M. K., Sohn, J. Y., Takahashi, H., Takahashi, T., Tamura, H., Tanida, K., Theint, A. M. M., Tint, K. T., Ukai, M., Yamamoto, T. O., Yang, S. B., Yoon, C. S., Yoshida, J., Zhang, D. H., and Zhang, Z.

Subjects
Nuclear Experiment, Nuclear Theory, Physics - Instrumentation and Detectors
Abstract

Bound-systems of $\Xi^-$--$^{14}_{}{\rm N}$ are studied via $\Xi^-$ capture at rest followed by emission of a twin single-$\Lambda$ hypernucleus in the emulsion detectors. Two events forming extremely deep $\Xi^-$ bound states were obtained by analysis of a hybrid method in the E07 experiment at J-PARC and reanalysis of the E373 experiment at KEK-PS. The decay mode of one event was assigned as $\Xi^-+^{14}_{}{\rm N}\to^{5}_{\Lambda}{\rm He}$+$^{5}_{\Lambda}{\rm He}$+$^{4}_{}{\rm He}$+n. Since there are no excited states for daughter particles, the binding energy of the $\Xi^-$ hyperon, $B_{\Xi^-}$, in $^{14}_{}{\rm N}$ nucleus was uniquely determined to be 6.27 $\pm$ 0.27 MeV. Another $\Xi^-$--$^{14}_{}{\rm N}$ system via the decay $^{9}_{\Lambda}{\rm Be}$ + $^{5}_{\Lambda}{\rm He}$ + n brings a $B_{\Xi^-}$ value, 8.00 $\pm$ 0.77 MeV or 4.96 $\pm$ 0.77 MeV, where the two possible values of $B_{\Xi^-}$ correspond to the ground and the excited states of the daughter $^{9}_{\Lambda}{\rm Be}$ nucleus, respectively. Because the $B_{\Xi^-}$ values are larger than those of the previously reported events (KISO and IBUKI), which are both interpreted as the nuclear $1p$ state of the $\Xi^-$--$^{14}_{}{\rm N}$ system, these new events give the first indication of the nuclear $1s$ state of the $\Xi$ hypernucleus, $^{15}_{\Xi}{\rm C}$., Comment: 26 pages, 7 figures

Published
2021
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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. 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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8. Results of the 𝚵− atomic X-ray measurement in J-PARC E07

Author

Fujita Manami, Ishikawa Y., Ukai M., Kanauchi H., Koike T., Tamura H., Hosomi K., Yamamoto T.O., Ekawa H., Hayakawa S.H., Nakazawa K., Yoshida J., Yoshimoto M., Kasagi A., Nishimura N., and Hayashi K.

Subjects
Physics, QC1-999
Abstract

Ξ− atomic X-ray spectroscopy is one of the most useful methods for investigation of the Ξ-nucleus strong interaction. A serious problem in the measurement is the significant background coming from in-flight Ξ− decay. For the first Ξ− atomic X-ray spectroscopy experiment, a novel method of identifying stopped Ξ− events using nuclear emulsion was developed to reject background photons from in-flight Ξ− decay. We succeeded in reducing the background to 1/170 by this method employing coincidence measurements using the nuclear emulsion and X-ray detectors.

Published
2022
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9. X ray spectroscopy on 𝚵− atoms (J-PARC E03, E07 and future)

Author

Yamamoto Takeshi. O., Fujita M., Gogami T., Harada T. K., Hayakawa S. H., Hosomi K., Ichikawa Y., Ishikawa Y., Kamada K., Kanauchi H., Koike T., Miwa K., Nagae T., Oura F., Takahashi T., Tamura H., Tanida K., and Ukai M.

Subjects
Physics, QC1-999
Abstract

X-ray spectroscopy of hadronic atoms is a powerful method to study strong interaction between hadrons and nuclei. At J-PARC, we have conducted two experiments, J-PARC E07 and E03, for hadronic atoms with a doubly strange hyperon, Ξ−, aiming at the world-first detection of their X-rays. The first measurement is performed as a byproduct of J-PARC E07 experiment with the hybrid emulsion technique. The second one, J-PARC E03, is a dedicated experiment for detection of Ξ− Fe atom X rays. The preliminary results and the present status of E07 and E03 are shown in this article. Future prospects of Ξ−-atomic X-ray spectroscopy are also discussed. A new measurement has been proposed for detecting Ξ− C atom X rays, where a novel Ξ− tracking method will be applied to realize an improved signal to noise ratio.

Published
2022
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11. 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. X ray spectroscopy on 횵− atoms (J-PARC E03, E07 and future).

Author

Yamamoto, Takeshi. O., Fujita, M., Gogami, T., Harada, T. K., Hayakawa, S. H., Hosomi, K., Ichikawa, Y., Ishikawa, Y., Kamada, K., Kanauchi, H., Koike, T., Miwa, K., Nagae, T., Oura, F., Takahashi, T., Tamura, H., Tanida, K., and Ukai, M.

Subjects
X-ray spectroscopy, ATOMS, HADRONS, PHYSICS experiments, HYPERONS
Abstract

X-ray spectroscopy of hadronic atoms is a powerful method to study strong interaction between hadrons and nuclei. At J-PARC, we have conducted two experiments, J-PARC E07 and E03, for hadronic atoms with a doubly strange hyperon, Ξ−, aiming at the world-first detection of their X-rays. The first measurement is performed as a byproduct of J-PARC E07 experiment with the hybrid emulsion technique. The second one, J-PARC E03, is a dedicated experiment for detection of Ξ− Fe atom X rays. The preliminary results and the present status of E07 and E03 are shown in this article. Future prospects of Ξ−-atomic X-ray spectroscopy are also discussed. A new measurement has been proposed for detecting Ξ− C atom X rays, where a novel Ξ− tracking method will be applied to realize an improved signal to noise ratio. [ABSTRACT FROM AUTHOR]

Published
2022
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14. Results of the 횵− atomic X-ray measurement in J-PARC E07.

Author

Fujita, Manami, Ishikawa, Y., Ukai, M., Kanauchi, H., Koike, T., Tamura, H., Hosomi, K., Yamamoto, T.O., Ekawa, H., Hayakawa, S.H., Nakazawa, K., Yoshida, J., Yoshimoto, M., Kasagi, A., Nishimura, N., and Hayashi, K.

Subjects
X-ray measurement, NUCLEAR emulsions, PHOTONS, X-ray detection, NUCLEAR counters
Abstract

Ξ− atomic X-ray spectroscopy is one of the most useful methods for investigation of the Ξ-nucleus strong interaction. A serious problem in the measurement is the significant background coming from in-flight Ξ− decay. For the first Ξ− atomic X-ray spectroscopy experiment, a novel method of identifying stopped Ξ− events using nuclear emulsion was developed to reject background photons from in-flight Ξ− decay. We succeeded in reducing the background to 1/170 by this method employing coincidence measurements using the nuclear emulsion and X-ray detectors. [ABSTRACT FROM AUTHOR]

Published
2022
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15. 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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16. X-ray spectroscopy experiments on exotic Xi atoms at J-PARC

Author

Yamamoto, Takeshi O, primary, Chiga, N., additional, Ekawa, H., additional, Fujita, M., additional, Gogami, T., additional, Harada, T., additional, Hayakawa, S.H., additional, Hosomi, K., additional, Ichikawa, Y., additional, Ishikawa, Y., additional, Kamada, K., additional, Kanauchi, H., additional, Koike, T., additional, Miwa, K., additional, Nagae, T., additional, Ogura, Y., additional, Oura, F., additional, Rogers, T.G., additional, Takahashi, T., additional, Tamura, H., additional, Tanida, K., additional, Ukai, M., additional, and Yoshida, J., additional

Published
2022
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17. 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

18. 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

19. First observation of a nuclear $s$-state of a $\Xi$ hypernucleus, $^{15}_{\Xi}{\rm C}$

Author

Yoshimoto, M., Ahn, J. K., Hoshino, K., Hoshino, S., Hwang, S. H., Ichikawa, Y., Ichikawa, M., Imai, K., Ishikawa, Y., Kanauchi, H., Kasagi, A., Kim, S. H., Bassalleck, B., Kinbara, S., Lin, P. M., Ma, T. L., Miwa, K., Moe, A. T., Nagase, Y., Nakazawa, K., Nanamura, T., Naruki, M., Nyaw, A. N. L., Ekawa, H., Pochodzalla, J., Sako, H., Sato, S., Soe, M. M., Soe, M. K., Sohn, J. Y., Takahashi, H., Takahashi, T., Tamura, H., Tanida, K., Endo, Y., Theint, A. M. M., Tint, K. T., Ukai, M., Yamamoto, T. O., Yang, S. B., Yoon, C. S., Yoshida, J., Zhang, D. H., Zhang, Z., Fujita, M., Han, Y., Hashimoto, T., Hayakawa, S. H., and Hicks, K.

Subjects
ddc:530
Abstract

Progress of theoretical and experimental physics 2021(7), 073D02 (2021). doi:10.1093/ptep/ptab073, Published by Oxford Univ. Press, Oxford

Published
2021
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20. 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

21. 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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22. 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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23. 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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24. 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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25. 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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26. 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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27. 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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28. 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

29. First observation of a nuclear s-state of a |$\Xi$| hypernucleus, |$^{15}_{\Xi}{\rm C}$|.

Author

Yoshimoto, M, Ahn, J K, Bassalleck, B, Ekawa, H, Endo, Y, Fujita, M, Han, Y, Hashimoto, T, Hayakawa, S H, Hicks, K, Hoshino, K, Hoshino, S, Hwang, S H, Ichikawa, Y, Ichikawa, M, Imai, K, Ishikawa, Y, Kanauchi, H, Kasagi, A, and Kim, S H

Subjects
NUCLEAR science, HYPERFRAGMENTS, HYPERONS, NUCLEAR structure, EMULSIONS
Abstract

Bound systems of |$\Xi^-$| – |$^{14}_{}{\rm N}$| are studied via |$\Xi^-$| capture at rest followed by emission of a twin single- |$\Lambda$| hypernucleus in the emulsion detectors. Two events forming extremely deep |$\Xi^-$| bound states were obtained by analysis of a hybrid method in the E07 experiment at J-PARC and reanalysis of the E373 experiment at KEK-PS. The decay mode of one event was assigned as |$\Xi^-+^{14}\!\,\!\!{\rm N}\to^{5}_{\Lambda}\!\!\!{\rm He} + ^{5}_{\Lambda}\!\!{\rm He} + ^{4}\!\!{\rm He} + \mathrm{n}$|⁠. Since there are no excited states for daughter particles, the binding energy of the |$\Xi^-$| hyperon, |$B_{\Xi^-}$|⁠ , in the |$^{14}_{}{\rm N}$| nucleus was uniquely determined to be |$6.27 \pm 0.27$| MeV. Another |$\Xi^-$| – |$^{14}_{}{\rm N}$| system via the decay |$^{9}_{\Lambda}{\rm Be} + ^{5}_{\Lambda}\!\!\!{\rm He} + \mathrm{n}$| brings a |$B_{\Xi^-}$| value, |$8.00 \pm 0.77$| MeV or |$4.96 \pm 0.77$| MeV, where the two possible values of |$B_{\Xi^-}$| correspond to the ground and the excited states of the daughter |$^{9}_{\Lambda}{\rm Be}$| nucleus, respectively. Because the |$B_{\Xi^-}$| values are larger than those of the previously reported events (KISO and IBUKI), which are both interpreted as the nuclear |$1p$| state of the |$\Xi^-$| – |$^{14}_{}{\rm N}$| system, these new events give the first indication of the nuclear |$1s$| state of the |$\Xi$| hypernucleus, |$^{15}_{\Xi}{\rm C}$|⁠. [ABSTRACT FROM AUTHOR]

Published
2021
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30. 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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31. 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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36. Addiction to the IGF2-ID1-IGF2 circuit for maintenance of the breast cancer stem-like cells

Author

Tominaga, K, primary, Shimamura, T, additional, Kimura, N, additional, Murayama, T, additional, Matsubara, D, additional, Kanauchi, H, additional, Niida, A, additional, Shimizu, S, additional, Nishioka, K, additional, Tsuji, E-i, additional, Yano, M, additional, Sugano, S, additional, Shimono, Y, additional, Ishii, H, additional, Saya, H, additional, Mori, M, additional, Akashi, K, additional, Tada, K-i, additional, Ogawa, T, additional, Tojo, A, additional, Miyano, S, additional, and Gotoh, N, additional

Published
2016
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40. Addiction to the IGF2-ID1-IGF2 circuit for maintenance of the breast cancer stem-like cells

Author

Tominaga, K, Shimamura, T, Kimura, N, Murayama, T, Matsubara, D, Kanauchi, H, Niida, A, Shimizu, S, Nishioka, K, Tsuji, E-i, Yano, M, Sugano, S, Shimono, Y, Ishii, H, Saya, H, Mori, M, Akashi, K, Tada, K-i, Ogawa, T, Tojo, A, Miyano, S, and Gotoh, N

Abstract

The transcription factor nuclear factor-κB (NF-κB) has important roles for tumorigenesis, but how it regulates cancer stem cells (CSCs) remains largely unclear. We identified insulin-like growth factor 2 (IGF2) is a key target of NF-κB activated by HER2/HER3 signaling to form tumor spheres in breast cancer cells. The IGF2 receptor, IGF1 R, was expressed at high levels in CSC-enriched populations in primary breast cancer cells. Moreover, IGF2-PI3K (IGF2-phosphatidyl inositol 3 kinase) signaling induced expression of a stemness transcription factor, inhibitor of DNA-binding 1 (ID1), and IGF2 itself. ID1 knockdown greatly reduced IGF2 expression, and tumor sphere formation. Finally, treatment with anti-IGF1/2 antibodies blocked tumorigenesis derived from the IGF1RhighCSC-enriched population in a patient-derived xenograft model. Thus, NF-κB may trigger IGF2-ID1-IGF2-positive feedback circuits that allow cancer stem-like cells to appear. Then, they may become addicted to the circuits. As the circuits are the Achilles’ heels of CSCs, it will be critical to break them for eradication of CSCs.

Published
2017
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