Search

Your search keyword '"Toyoda T"' showing total 1,711 results
Start Over Author "Toyoda T"
1,711 results on '"Toyoda T"'

1. T-Violation experiment at TRIUMF-ISAC using polarized 8Li

Author

Murata J., Baba H., Behr J.A., Iguri T., Ikeda M., Kawamura H., Kishi R., Levy C.D.P., Nakaya Y., Narikawa R., Ninomiya K., Onishi J., Openshaw R., Pearson M., Seitaibashi E., Saiba S., Tanaka S., Tanuma R., Totsuka Y., and Toyoda T.

Subjects
Physics, QC1-999
Abstract

Motivated by a search for a new physics beyond the standard model, the MTV experiment (Mott Polarimetry for T-Violation Experiment) is intended to achieve the highest precision test of time-reversal symmetry in polarized nuclear beta decay by measuring a triple correlation (the R-correlation). The first physics run of the MTV experiment was performed in 2010 at TRIUMF-ISAC. This paper gives preliminary results and describes the next generation setup, which involves a cylindrical drift chamber.

Published
2014
Full Text
View/download PDF

2. Study of the $K_L \!\to\! \pi^0 \nu \overline{\nu}$ Decay at the J-PARC KOTO Experiment

Author

KOTO Collaboration, Ahn, J. K., Beckford, B., Campbell, M., Chen, S. H., Comfort, J., Dona, K., Farrington, M. S., Hanai, K., Hara, N., Haraguchi, H., Hsiung, Y. B., Hutcheson, M., Inagaki, T., Isoe, M., Kamiji, I., Kato, T., Kim, E. J., Kim, J. L., Kim, H. M., Komatsubara, T. K., Kotera, K., Lee, S. K., Lee, J. W., Lim, G. Y., Lin, Q. S., Lin, C., Luo, Y., Mari, T., Masuda, T., Matsumura, T., Mcfarland, D., McNeal, N., Miyazaki, K., Murayama, R., Nakagiri, K., Nanjo, H., Nishimiya, H., Noichi, Y., Nomura, T., Nunes, T., Ohsugi, M., Okuno, H., Redeker, J. C., Sanchez, J., Sasaki, M., Sasao, N., Sato, T., Sato, K., Sato, Y., Shimizu, N., Shimogawa, T., Shinkawa, T., Shinohara, S., Shiomi, K., Shiraishi, R., Su, S., Sugiyama, Y., Suzuki, S., Tajima, Y., Taylor, M., Tecchio, M., Togawa, M., Toyoda, T., Tung, Y. -C., Vuong, Q. H., Wah, Y. W., Watanabe, H., Yamanaka, T., Yoshida, H. Y., and Zaidenberg, L.

Subjects
High Energy Physics - Experiment
Abstract

The rare decay $K_L \!\to\! \pi^0 \nu \overline{\nu}$ was studied with the dataset taken at the J-PARC KOTO experiment in 2016, 2017, and 2018. With a single event sensitivity of $( 7.20 \pm 0.05_{\rm stat} \pm 0.66_{\rm syst} ) \times 10^{-10}$, three candidate events were observed in the signal region. After unveiling them, contaminations from $K^{\pm}$ and scattered $K_L$ decays were studied, and the total number of background events was estimated to be $1.22 \pm 0.26$. We conclude that the number of observed events is statistically consistent with the background expectation. For this dataset, we set an upper limit of $4.9 \times 10^{-9}$ on the branching fraction of $K_L \!\to\! \pi^0 \nu \overline{\nu}$ at the 90% confidence level., Comment: 6 pages, 5 figures; published version, no change in the results. Fig. 2 and Fig. 4 were revised. In Fig. 5, the plot of the $P_{t}$ versus ${Z_{\mathrm{vtx}}}$ of the beam-halo $K_L\!\to\!2\gamma$ background events was added as Fig. 5 (b)

Published
2020
Full Text
View/download PDF

4. First Search for the $K_L \to \pi^0 \gamma$ Decay

Author

Ahn, J. K., Beckford, B., Campbell, M., Chen, S. H., Choi, J. M., Comfort, J., Dona, K., Farrington, M. S., Hara, N., Haraguchi, H., Hsiung, Y. B., Hutcheson, M., Inagaki, T., Isoe, M., Kamiji, I., Kim, E. J., Kim, J. L., Kim, H. M., Komatsubara, T. K., Kotera, K., Lee, J. W., Lim, G. Y., Lin, C., Lin, Q. S., Luo, Y., Mari, T., Matsumura, T., Mcfarland, D., Miyazaki, K., Murayama, R., Nakagiri, K., Nanjo, H., Nishimiya, H., Noichi, Y., Nomura, T., Nunes, T., Ohsugi, M., Okuno, H., Redeker, J. C., Sato, K., Sato, T., Sato, Y., Shimizu, N., Shimogawa, T., Shinkawa, T., Shinohara, S., Shiomi, K., Shiraishi, R., Su, S., Sugiyama, Y., Suzuki, S., Tajima, Y., Taylor, M., Tecchio, M., Togawa, M., Toyoda, T., Tung, Y. C., Vuong, Q. H., Wah, Y. W., Watanabe, H., Yamanaka, T., and Yoshida, H. Y.

Subjects
High Energy Physics - Experiment
Abstract

We report the first search for the $K_L \to \pi^0 \gamma$ decay, which is forbidden by Lorentz invariance, using the data from 2016 to 2018 at the J-PARC KOTO experiment. With a single event sensitivity of $(7.1\pm 0.3_{\rm stat.} \pm 1.6_{\rm syst.})\times 10^{-8}$, no candidate event was observed in the signal region. The upper limit on the branching fraction was set to be $1.7\times 10^{-7}$ at the 90\% confidence level.

Published
2020
Full Text
View/download PDF

5. Study of the KL→π0νν¯ Decay at the J-PARC KOTO Experiment

Author

Ahn, JK, Beckford, B, Campbell, M, Chen, SH, Comfort, J, Dona, K, Farrington, MS, Hanai, K, Hara, N, Haraguchi, H, Hsiung, YB, Hutcheson, M, Inagaki, T, Isoe, M, Kamiji, I, Kato, T, Kim, EJ, Kim, JL, Kim, HM, Komatsubara, TK, Kotera, K, Lee, SK, Lee, JW, Lim, GY, Lin, QS, Lin, C, Luo, Y, Mari, T, Masuda, T, Matsumura, T, Mcfarland, D, McNeal, N, Miyazaki, K, Murayama, R, Nakagiri, K, Nanjo, H, Nishimiya, H, Noichi, Y, Nomura, T, Nunes, T, Ohsugi, M, Okuno, H, Redeker, JC, Sanchez, J, Sasaki, M, Sasao, N, Sato, T, Sato, K, Sato, Y, Shimizu, N, Shimogawa, T, Shinkawa, T, Shinohara, S, Shiomi, K, Shiraishi, R, Su, S, Sugiyama, Y, Suzuki, S, Tajima, Y, Taylor, M, Tecchio, M, Togawa, M, Toyoda, T, Tung, Y-C, Vuong, QH, Wah, YW, Watanabe, H, Yamanaka, T, Yoshida, HY, and Zaidenberg, L

Subjects
Particle and High Energy Physics, Physical Sciences, KOTO Collaboration, hep-ex, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

The rare decay K_{L}→π^{0}νν[over ¯] was studied with the dataset taken at the J-PARC KOTO experiment in 2016, 2017, and 2018. With a single event sensitivity of (7.20±0.05_{stat}±0.66_{syst})×10^{-10}, three candidate events were observed in the signal region. After unveiling them, contaminations from K^{±} and scattered K_{L} decays were studied, and the total number of background events was estimated to be 1.22±0.26. We conclude that the number of observed events is statistically consistent with the background expectation. For this dataset, we set an upper limit of 4.9×10^{-9} on the branching fraction of K_{L}→π^{0}νν[over ¯] at the 90% confidence level.

Published
2021

9. A new measurement of electron transverse polarization in polarized nuclear beta decay

Author

Kawamura, H., Akiyama, T., Hata, M., Hirayama, Y., Ikeda, M., Ikeda, Y., Ishii, T., Kameda, D., Mitsuoka, S., Miyatake, H., Nagae, D., Nakaya, Y., Ninomiya, K., Nitta, M., Ogawa, N., Onishi, J., Seitaibashi, E., Tanaka, S., Tanuma, R., Totsuka, Y., Toyoda, T., Watanabe, Y. X., and Murata, J.

Subjects
Nuclear Experiment
Abstract

The Mott polarimetry for T -Violation (MTV) experiment tests time-reversal symmetry in polarized nuclear beta decay by measuring an electron's transverse polarization as a form of angular asymmetry in Mott scattering using a thin metal foil. A Mott scattering analyzer system developed using a tracking detector to measure scattering angles offers better event selectivity than conventional counter experiments. In this paper, we describe a pilot experiment conducted at KEK-TRIAC using a prototype system with a polarized 8Li beam. The experiment confirmed the sound performance of our Mott analyzer system to measure T-violating triple correlation (R correlation), and therefore recommends its use in higher-precision experiments at the TRIUMF-ISAC.

Published
2017
Full Text
View/download PDF

11. A new search for the $K_{L} \to \pi^0 \nu \overline{\nu}$ and $K_{L} \to \pi^{0} X^{0}$ decays

Author

Ahn, J. K., Baek, K. Y., Banno, S., Beckford, B., Brubaker, B., Cai, T., Campbell, M., Carruth, C., Chen, S. H., Chu, S., Comfort, J., Duh, Y. T., Furukawa, T., Haraguchi, H., Hineno, T., Hsiung, Y. B., Hutcheson, M., Inagaki, T., Isoe, M., Iwai, E., Kamibayashi, T., Kamiji, I., Kawasaki, N., Kim, E. J., Kim, Y. J., Ko, J. W., Komatsubara, T. K., Kurilin, A. S., Lee, G. H., Lee, H. S., Lee, J. W., Lee, S. K., Lim, G. Y., Lin, C., Ma, J., Maeda, Y., Masuda, T., Matsumura, T., Mcfarland, D., Micallef, J., Miyazaki, K., Morgan, K., Murayama, R., Naito, D., Nakagiri, K., Nakajima, Y., Nakaya, Y., Nanjo, H., Nomura, T., Odani, Y., Ogata, R., Okuno, H., Ota, T., Ri, Y. D., Sasaki, M., Sasao, N., Sato, K., Sato, T., Seki, S., Shimogawa, T., Shinkawa, T., Shinohara, S., Shiomi, K., Son, J. S., Stevens, J., Su, S., Sugiyama, Y., Suzuki, S., Tajima, Y., Takahashi, G., Takashima, Y., Tecchio, M., Teo, I., Togawa, M., Toyoda, T., Tung, Y. C., Usuki, T., Wah, Y. W., Watanabe, H., Whallon, N., Woo, J. K., Xu, J., Yamaga, M., Yamamoto, S., Yamanaka, T., Yamauchi, H., Yanagida, Y., Yokota, H., Yoshida, H. Y., and Yoshimoto, H.

Subjects
High Energy Physics - Experiment
Abstract

We searched for the $CP$-violating rare decay of neutral kaon, $K_{L} \to \pi^0 \nu \overline{\nu}$, in data from the first 100 hours of physics running in 2013 of the J-PARC KOTO experiment. One candidate event was observed while $0.34\pm0.16$ background events were expected. We set an upper limit of $5.1\times10^{-8}$ for the branching fraction at the 90\% confidence level (C.L.). An upper limit of $3.7\times10^{-8}$ at the 90\% C.L. for the $K_{L} \to \pi^{0} X^{0}$decay was also set for the first time, where $X^{0}$ is an invisible particle with a mass of 135 MeV/$c^{2}$., Comment: 11 pages, 5 figures, to be published in PTEP

Published
2016
Full Text
View/download PDF

12. Long-lived neutral-kaon flux measurement for the KOTO experiment

Author

Masuda, T., Ahn, J. K., Banno, S., Campbell, M., Comfort, J., Duh, Y. T., Hineno, T., Hsiung, Y. B., Inagaki, T., Iwai, E., Kawasaki, N., Kim, E. J., Kim, Y. J., Ko, J. W., Komatsubara, T. K., Kurilin, A. S., Lee, G. H., Lee, J. W., Lee, S. K., Lim, G. Y., Ma, J., MacFarland, D., Maeda, Y., Matsumura, T., Murayama, R., Naito, D., Nakaya, Y., Nanjo, H., Nomura, T., Odani, Y., Okuno, H., Ri, Y. D., Sasao, N., Sato, K., Sato, T., Seki, S., Shimogawa, T., Shinkawa, T., Shiomi, K., Son, J. S., Sugiyama, Y., Suzuki, S., Tajima, Y., Takahashi, G., Takashima, Y., Tecchio, M., Togawa, M., Toyoda, T., Tung, Y. C., Wah, Y. W., Watanabe, H., Woo, J. K., Xu, J., Yamanaka, T., Yanagida, Y., Yoshida, H. Y., and Yoshimoto, H.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The KOTO ($K^0$ at Tokai) experiment aims to observe the CP-violating rare decay $K_L \rightarrow \pi^0 \nu \bar{\nu}$ by using a long-lived neutral-kaon beam produced by the 30 GeV proton beam at the Japan Proton Accelerator Research Complex. The $K_L$ flux is an essential parameter for the measurement of the branching fraction. Three $K_L$ neutral decay modes, $K_L \rightarrow 3\pi^0$, $K_L \rightarrow 2\pi^0$, and $K_L \rightarrow 2\gamma$ were used to measure the $K_L$ flux in the beam line in the 2013 KOTO engineering run. A Monte Carlo simulation was used to estimate the detector acceptance for these decays. Agreement was found between the simulation model and the experimental data, and the remaining systematic uncertainty was estimated at the 1.4\% level. The $K_L$ flux was measured as $(4.183 \pm 0.017_{\mathrm{stat.}} \pm 0.059_{\mathrm{sys.}}) \times 10^7$ $K_L$ per $2\times 10^{14}$ protons on a 66-mm-long Au target., Comment: 27 pages, 16 figures. To be appeared in Progress of Theoretical and Experimental Physics

Published
2015
Full Text
View/download PDF

15. Study of the nnΛΛn State and nnΛΛn Interaction at Jefferson Lab

Author

Itabashi, K., Akiyama, T., Fujii, Y., Fujiwara, T., Garibaldi, F., Gogami, T., Kaneta, M., Katayama, K., Markowitz, P. E. C., Maeda, K., Mizuno, M., Nagao, S., Nakamura, S. N., Nakamura, Y. R., Okuyama, K., Pandey, B., Reinhold, J., Suzuki, K. N., Tang, L., Toyama, Y., Toyoda, T., Uehara, K., Umezaki, E., and Urciuoli, G. M.

Published
2022
Full Text
View/download PDF

19. Magnetic induction dependence of the dispersion of magnetoplasmon in a two-dimensional electron gas with finite layer thickness

Author

Uchida, T., Hiraiwa, N., Yamada, K., Fujita, M., and Toyoda, T.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Magnetic induction dependence of the dispersion of longitudinal magnetoplasmon in a two-dimensional electron gas with finite layer thickness under a static uniform magnetic field normal to the layer plane is calculated using the self-consistent linear response approximation. Two longitudinal magnetoplasmon modes are obtained. The calculated dispersion agrees with the experiment by Batke {\it et al.} [Phys. Rev. B {\bf 34}, 6951 (1986)].

Published
2013
Full Text
View/download PDF

21. EP07.01-29 What Is a Risk Factor for Postoperative Home Oxygen Therapy in Primary Lung Cancer Patients?

Author

Yamanaka, T., primary, Sakairi, Y., additional, Tada, Y., additional, Imabayashi, H., additional, Uematsu, Y., additional, Shimizu, D., additional, Ochi, T., additional, Yusa, J., additional, Oeda, H., additional, Sata, Y., additional, Toyoda, T., additional, Inage, T., additional, Tanaka, K., additional, Suzuki, H., additional, Matsui, Y., additional, and Yoshino, I., additional

Published
2023
Full Text
View/download PDF

27. Right Heart Recovery after Lung Transplantation in Patients with COVID-19-Associated Acute Respiratory Distress Syndrome: A Cohort Study

Author

Toyoda, T., primary, Nayak, T., additional, Arunachalam, A., additional, Thomae, B.L., additional, Kandula, V., additional, Manerikar, A.J., additional, Jankowski, M., additional, Kaiho, T., additional, Yagi, Y., additional, Cerier, E., additional, Maganti, K., additional, Tomic, R., additional, Budinger, G., additional, Bharat, A., additional, and Kurihara, C., additional

Published
2023
Full Text
View/download PDF

29. (982) Feasibility of Veno-Venous Extracorporeal Membrane Oxygenation Using ProtekDuoTM Cannula Ina Patients with COVID-19-Associated Acute Respiratory Distress Syndrome with Severe Right Heart Dysfunction Before Lung Transplantation

Author

Toyoda, T., primary, Nayak, T., additional, Arunachalam, A., additional, Thomae, B.L., additional, Kandula, V., additional, Manerikar, A.J., additional, Jankowski, M., additional, Kaiho, T., additional, Yagi, Y., additional, Cerier, E., additional, Maganti, K., additional, Tomic, R., additional, Budinger, G., additional, Bharat, A., additional, and Kurihara, C., additional

Published
2023
Full Text
View/download PDF

31. The MTV experiment: a test of time reversal symmetry using polarized 8Li

Author

Murata, J., Baba, H., Behr, J. A., Hirayama, Y., Iguri, T., Ikeda, M., Kato, T., Kawamura, H., Kishi, R., Levy, C. D. P., Nakaya, Y., Ninomiya, K., Ogawa, N., Onishi, J., Openshaw, R., Pearson, M., Seitaibashi, E., Tanaka, S., Tanuma, R., Totsuka, Y., Toyoda, T., Dilling, Jens, editor, Krücken, Reiner, editor, and Merminga, Lia, editor

Published
2014
Full Text
View/download PDF

34. EP.06C.03 Clinicopathological Analysis of Each EGFR Status in Surgically Resected Lung Adenocarcinoma: A Real-World Study (CReGYT-01 EGFR)

Author

HOSHINO, H., Katsumata, S., Hamada, A., Haratake, N., Nomura, K., Fujino, K., Yoshikawa, M., Suzawa, K., Shien, K., Suda, K., Ohara, S., Fukuda, S., Kinoshita, I., Hayasaka, K., Notsuda, H., Takamori, S., Muto, S., Takanashi, Y., Mizuno, K., Kawase, A., Hayakawa, T., Sekihara, K., Toda, M., Matsuo, S., Takegahara, K., Hashimoto, M., Nakahashi, K., Endo, M., Ozawa, H., Fujikawa, R., Tomioka, Y., Namba, K., Matsubara, T., Suzuki, J., Watanabe, H., Takada, K., Toyoda, T., Nakasone, S., Kawasaki, H., Shimokawa, M., Kouki, Y., Shiono, S., Soh, J., and Ohde, Y.

Published
2024
Full Text
View/download PDF

36. P2.07A.03 Prognostic Analysis of Completely Resected Lung Adenocarcinoma with Uncommon EGFR Mutations: CReGYT-01 EGFR Study

Author

Hayasaka, K., Haratake, N., Notsuda, H., Katsumata, S., Hamada, A., Nomura, K., Fujino, K., Yoshikawa, M., Suzawa, K., Shien, K., Suda, K., Ohara, S., Fukuda, S., Kinoshita, I., Takamori, S., Muto, S., Takanashi, Y., Mizuno, K., Kawase, A., Hayakawa, T., Sekihara, K., Toda, M., Matsuo, S., Takegahara, K., Hashimoto, M., Nakahashi, K., Endo, M., Ozawa, H., Fujikawa, R., Tomioka, Y., Namba, K., Matsubara, T., Suzuki, J., Watanabe, H., Takada, K., Hoshino, H., Toyoda, T., Koki, Y., Shiono, S., Shimokawa, M., Soh, J., Ohde, Y., and Okada, Y.

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results