Zobrazeno 1 - 10
of 3 762
pro vyhledávání: '"Tajima Y"'
Autor:
KOTO Collaboration, Ahm, J. K., Farriagton, M., Gonzalez, M., Grethen, N., Hanai, K., Hara, N., Haraguchi, H., Hsiung, Y. B., Inagaki, T., Katayama, M., Kato, T., Kawata, Y., Kim, E. J., Kim, H. M., Kitagawa, A., Komatsubara, T. K., Kotera, K., Lee, S. K., Li, X., Lim, G. Y., Lin, C., Luo, Y., Mari, T., Matsumura, T., Morioka, I., Nanjo, H., Nishimiya, H., Noichi, Y., Nomura, T., Ono, K., Osugi, M., Paschos, P., Redeker, J., Sato, T., Sato, Y., Shibata, T., Shimizu, N., Shinkawa, T., Shiomi, K., Shiraishi, R., Suzuki, S., Tajima, Y., Taylor, N., Tung, Y. C., Wah, Y. W., Watanabe, H., Wu, T., Yamanaka, T., Yoshida, H. Y.
We performed a search for the $K_L \to \pi^{0} \nu \bar{\nu}$ decay using the data taken in 2021 at the J-PARC KOTO experiment. With newly installed counters and new analysis method, the expected background was suppressed to $0.252\pm0.055_{\mathrm{s
Externí odkaz:
http://arxiv.org/abs/2411.11237
Autor:
Shu, K., Tajima, Y., Uozumi, R., Miyamoto, N., Shiraishi, S., Kobayashi, T., Ishida, A., Yamada, K., Gladen, R. W., Namba, T., Asai, S., Wada, K., Mochizuki, I., Hyodo, T., Ito, K., Michishio, K., O'Rourke, B. E., Oshima, N., Yoshioka, K.
Publikováno v:
Nature 633, 793 (2024)
When laser radiation is skilfully applied, atoms and molecules can be cooled allowing precise measurements and control of quantum systems. This is essential in fundamental studies of physics as well as practical applications such as precision spectro
Externí odkaz:
http://arxiv.org/abs/2310.08761
Autor:
Lin, C., Ahn, J. K., Choi, J. M., Farrington, M. S., Gonzalez, M., Grethen, N., Hsiung, Y. B., Inagaki, T., Kamiji, I., Kim, E. J., Kim, J. L., Kim, H. M., Kawata, K., Kitagawa, A., Komatsubara, T. K., Kotera, K., Lee, S. K., Lee, J. W., Lim, G. Y., Luo, Y., Matsumura, T., Nakagiri, K., Nanjo, H., Nomura, T., Ono, K., Redeker, J. C., Sato, T., Sasse, V., Shibata, T., Shimizu, N., Shinkawa, T., Shinohara, S., Shiomi, K., Shiraishi, R., Suzuki, S., Tajima, Y., Tung, Y. -C., Wah, Y. W., Watanabe, H., Wu, T., Yamanaka, T., Yoshida, H. Y.
We present the first search for the pair production of dark particles $X$ via $K_L^0\to XX$ with $X$ decaying into two photons using the data collected by the KOTO experiment. No signal was observed in the mass range of 40 - 110 MeV/c$^2$ and 210 - 2
Externí odkaz:
http://arxiv.org/abs/2209.11019
Autor:
Ishikawa, T., Fix, A., Fujimura, H., Fukasawa, H., Hashimoto, R., He, Q., Honda, Y., Iwata, T., Kaida, S., Kasagi, J., Kawano, A., Kuwasaki, S., Maeda, K., Masumoto, S., Miyabe, M., Miyahara, F., Mochizuki, K., Muramatsu, N., Nakamura, A., Nawa, K., Obara, Y., Ogushi, S., Okada, Y., Okamura, K., Onodera, Y., Ozawa, K., Sakamoto, Y., Sato, M., Shimizu, H., Sugai, H., Suzuki, K., Tajima, Y., Takahashi, S., Taniguchi, Y., Tsuchikawa, Y., Yamazaki, H., Yamazaki, R., Yoshida, H. Y.
Coherent photoproduction of the neutral pion and eta meson on the deuteron, $\gamma{d}${$\to$}$\pi^0\eta{d}$, has been experimentally studied at incident photon energies ranging from the reaction threshold to 1.15 GeV. The total cross section demonst
Externí odkaz:
http://arxiv.org/abs/2202.04776
Autor:
He Q., Fujimura H., Fukasawa H., Hashimoto R., Honda Y., Ishikawa T., Iwata T., Kaida S., Kasagi J., Kawano A., Kuwasaki S., Maeda K., Masumoto S., Miyabe M., Miyahara F., Mochizuki K., Muramatsu N., Nakamura A., Nawa K., Ogushi S., Okada Y., Onodera Y., Ozawa K., Sakamoto Y., Sato M., Shimizu H., Sugai H., Suzuki K., Tajima Y., Takahashi S., Taniguchi Y., Tsuchikawa Y., Yamazaki H., Yamazaki R., Yoshida H. Y.
Publikováno v:
EPJ Web of Conferences, Vol 109, p 04004 (2016)
Total cross section for the double neutral pion photoproduction off the proton is presented in the incident photon energy range of 0.58 to 1.15 GeV. The data were accumulated in the years 2009–2010, recorded by a 4π EM calorimeter at ELPH, named F
Externí odkaz:
https://doaj.org/article/9efc4b31f6cc42cdb2bde57fd290b531
Autor:
Ishikawa, T., Fujimura, H., Fukasawa, H., Hashimoto, R., He, Q., Honda, Y., Iwata, T., Kaida, S., Kasagi, J., Kawano, A., Kuwasaki, S., Maeda, K., Masumoto, S., Miyabe, M., Miyahara, F., Mochizuki, K., Muramatsu, N., Nakamura, A., Nawa, K., Obara, Y., Ogushi, S., Okada, Y., Okamura, K., Onodera, Y., Ozawa, K., Sakamoto, Y., Sato, M., Shimizu, H., Sugai, H., Suzuki, K., Tajima, Y., Takahashi, S., Taniguchi, Y., Tsuchikawa, Y., Yamazaki, H., Yamazaki, R., Yoshida, H. Y.
To investigate the interaction between the nucleon $N$ and nucleon resonance $N(1535)1/2^-$, the $\eta d$ threshold structure connected to the isoscalar $S$-wave $N$-$N(1535)1/2^-$ system has been experimentally studied in the $\gamma{d}${$\to$}$\pi^
Externí odkaz:
http://arxiv.org/abs/2105.10887
Autor:
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., Zaidenberg, L.
Publikováno v:
Phys. Rev. Lett. 126, 121801 (2021)
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 $( 7.20 \pm 0.05_{\rm stat} \pm 0.66_{\rm syst} ) \times 10^{-10}$, thr
Externí odkaz:
http://arxiv.org/abs/2012.07571
Autor:
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., Yoshida, H. Y.
Publikováno v:
Phys. Rev. D 102, 051103 (2020)
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.}
Externí odkaz:
http://arxiv.org/abs/2006.14918
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Autor:
Ishikawa, T., Fujimura, H., Fukasawa, H., Hashimoto, R., He, Q., Honda, Y., Hosaka, A., Iwata, T., Kaida, S., Kawano, A., Kuwasaki, S., Maeda, K., Masumoto, S., Miyabe, M., Miyahara, F., Mochizuki, K., Muramatsu, N., Nakamura, A., Nakamura, S. X., Nawa, K., Ogushi, S., Okada, Y., Okamura, K., Onodera, Y., Ozawa, K., Sakamoto, Y., Sato, M., Sato, T., Shimizu, H., Sugai, H., Suzuki, K., Tajima, Y., Takahashi, S., Taniguchi, Y., Tsuchikawa, Y., Yamazaki, H., Yamazaki, R., Yoshida, H. Y.
Publikováno v:
Phys. Rev. C 101, 052201 (2020)
Photoproduction of the $\omega$ meson on the proton has been experimentally studied near the threshold. The total cross sections are determined at incident energies ranging from 1.09 to 1.15 GeV. The 1/2 and 3/2 spin-averaged scattering length $a_{\o
Externí odkaz:
http://arxiv.org/abs/1904.02797