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313 results on '"Nagatomi, R."'

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. Associations Between Consumption of Different Vegetable Types and Depressive Symptoms in Japanese Workers: A Cross-Sectional Study

Author

Gong Q, Momma H, Cui Y, Huang C, Niu K, and Nagatomi R

Subjects
vegetables, depression, japan, adults, workers, tomato products, Public aspects of medicine, RA1-1270
Abstract

Qiang Gong,1 Haruki Momma,1 Yufei Cui,1,2 Cong Huang,3 Kaijun Niu,4 Ryoichi Nagatomi1,5 1Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan; 2Institute of Exercise Epidemiology and Department of Physical Education, Huaiyin Institute of Technology, Huaian, People’s Republic of China; 3Department of Physical Education, Zhejiang University, Hangzhou, People’s Republic of China; 4Department of Epidemiology, School of Public Health, Tianjin Medical University, Tianjin, People’s Republic of China; 5Division of Biomedical Engineering for Health & Welfare, Tohoku University Graduate School of Biomedical Engineering, Sendai, JapanCorrespondence: Ryoichi Nagatomi, Division of Biomedical Engineering for Health & Welfare, Tohoku University Graduate School of Biomedical Engineering, 2-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan, Tel/Fax + 81-22-717-8586, Email nagatomi@med.tohoku.ac.jpPurpose: Vegetable intake is an important part of our everyday diet and is associated with many positive health outcomes. Although previous studies have investigated the association between vegetable consumption and depressive symptoms among various populations, no study has examined this association in the adult working population. The present study investigated whether the frequency of consumption of a specific type of vegetable is associated with the prevalence of depressive symptoms in Japanese adult workers.Participants and Methods: The final participants consisted of 1724 Japanese adults, and a cross-sectional study was conducted to analyze the results. The frequency of vegetable consumption and depressive symptoms was evaluated using a brief-type self-administered diet history questionnaire and the Zung Self-Rating Depression Scale (SDS), respectively. The association between the variables was examined using Poisson regression analysis. Age-stratified analysis was performed, and SDS cut-off values of 45 and 50 were used to perform a sensitivity analysis.Results: After adjustment for covariates, including age, body mass index, sociodemographic and lifestyle-related variables, health condition, C-reactive protein, and other dietary variables, an inverse association was found between tomato product consumption and the prevalence of depressive symptoms among men (P for trend < 0.01); however, no significant association was found for other vegetable types. For women, there was no association between the frequency of consumption of any of the vegetable types and the prevalence of depressive symptoms. The results were confirmed by the age-stratified analysis for both genders.Conclusion: Consumption of tomato products may help alleviate depressive symptoms, regardless of differences in dietary culture among men.Keywords: vegetables, depression, Japan, adults, workers, tomato products

Published
2022

5. 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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6. 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

7. Biosignal processing methods to explore the effects of side-dominance on patterns of bi- and unilateral standing stability in healthy young adults.

Author

Négyesi, J, Petró, B, Salman, DN, Khandoker, A, Katona, P, Wang, Z, Almaazmi, AISQ, Hortobágyi, T, Váczi, M, Rácz, K, Pálya, Z, Grand, L, Kiss, RM, Nagatomi, R, Négyesi, J, Petró, B, Salman, DN, Khandoker, A, Katona, P, Wang, Z, Almaazmi, AISQ, Hortobágyi, T, Váczi, M, Rácz, K, Pálya, Z, Grand, L, Kiss, RM, and Nagatomi, R

Abstract

We examined the effects of side-dominance on the laterality of standing stability using ground reaction force, motion capture (MoCap), and EMG data in healthy young adults. We recruited participants with strong right (n = 15) and left (n = 9) hand and leg dominance (side-dominance). They stood on one or two legs on a pair of synchronized force platforms for 50 s with 60 s rest between three randomized stance trials. In addition to 23 CoP-related variables, we also computed six MoCap variables representing each lower-limb joint motion time series. Moreover, 39 time- and frequency-domain features of EMG data from five muscles in three muscle groups were analyzed. Data from the multitude of biosignals converged and revealed concordant patterns: no differences occurred between left- and right-side dominant participants in kinetic, kinematic, or EMG outcomes during bipedal stance. Regarding single leg stance, larger knee but lower ankle joint kinematic values appeared in left vs right-sided participants during non-dominant stance. Left-vs right-sided participants also had lower medial gastrocnemius EMG activation during non-dominant stance. While right-side dominant participants always produced larger values for kinematic data of ankle joint and medial gastrocnemius EMG activation during non-dominant vs dominant unilateral stance, this pattern was the opposite for left-sided participants, showing larger values when standing on their dominant vs non-dominant leg, i.e., participants had a more stable balance when standing on their right leg. Our results suggest that side-dominance affects biomechanical and neuromuscular control strategies during unilateral standing.

Published
2022

8. 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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9. 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

10. 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

12. 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

13. 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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15. 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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16. 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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17. 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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20. 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

27. 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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28. 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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31. Novel binding partner of dysferlin is required for plasma-membrane repair

Author

Ono, H., primary, Suzuki, N., additional, Kanno, S., additional, Izumi, R., additional, Takahashi, T., additional, Kitajima, Y., additional, Osana, S., additional, Akiyama, T., additional, Ikeda, K., additional, Shijo, T., additional, Mitsuzawa, S., additional, Warita, H., additional, Nagatomi, R., additional, Araki, N., additional, Yasui, A., additional, Miyake, K., additional, and Aoki, M., additional

Published
2017
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37. Activation of the hypoxia-inducible factor pathway induced by prolyl hydroxylase domain 2 deficiency enhances the effect of running training in mice.

Author

Nunomiya, A., Shin, J., Kitajima, Y., Dan, T., Miyata, T., and Nagatomi, R.

Subjects
HYPOXIA-inducible factors, OXYGEN consumption, ARYL hydrocarbon hydroxylases, TREADMILL exercise, RUNNING techniques
Abstract

Aims Hypoxic response mediated by hypoxia-inducible factor ( HIF) seems to contribute to the benefit of endurance training. To verify the direct contribution of HIF activation to running training without exposure to atmospheric hypoxia, we used prolyl hydroxylase domain 2 ( PHD2) conditional knockout mice (c KO), which exhibit HIF activation independent of oxygen concentration, and we examined their maximal exercise capacity before and after 4 weeks of treadmill exercise training. Methods Phd2 f/f mice ( n = 26) and Phd2 c KO mice ( n = 24) were randomly divided into two groups, trained and untrained, and were subjected to maximal running test before and after a 4-week treadmill-training regimen. Results Prolyl hydroxylase domain 2 deficiency resulted in HIF-α protein accumulation. Phd2 c KO mice exhibited marked increases in haematocrit values and haemoglobin concentrations, as well as an increase in the capillary number in the skeletal muscle. The 4-week training elicited an increase in the capillary-to-fibre (C/F) ratio and succinyl dehydrogenase activity of the skeletal muscle. Importantly, trained Phd2 c KO mice showed a significantly greater improvement in running time than trained control mice ( P < 0.05). Collectively, these data suggest that the combination of training and the activation of the HIF pathway are important for maximizing the effect of running training. Conclusion We conclude that the activation of the HIF pathway induced by PHD2 deficiency enhances the effect of running training. [ABSTRACT FROM AUTHOR]

Published
2017
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48. Skin advanced glycation end-product accumulation is negatively associated with calcaneal osteo-sono assessment index among non-diabetic adult Japanese men

Author

Momma, H., primary, Niu, K., additional, Kobayashi, Y., additional, Guan, L., additional, Sato, M., additional, Guo, H., additional, Chujo, M., additional, Otomo, A., additional, Yufei, C., additional, Tadaura, H., additional, Saito, T., additional, Mori, T., additional, Miyata, T., additional, and Nagatomi, R., additional

Published
2011
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50. Effect of office-based impact exercise on bone in premenopausal Japanese women: Sendai Bone Health Concept Study

Author

Nagatomi, R., primary, Niu, K., additional, Uchimaru, J., additional, Guo, H., additional, Korpelainen, R., additional, Heikkinen, R., additional, Sato, K., additional, Kishimoto, K., additional, Vainionpää, A., additional, Sakai, A., additional, Salo, S., additional, Itoi, E., additional, Komatsu, S., additional, and Jämsä, T., additional

Published
2009
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