New precise measurements of muonium hyperfine structure at J-PARC MUSE

Autor: Strasser P., Abe M., Aoki M., Choi S., Fukao Y., Higashi Y., Higuchi T., Iinuma H., Ikedo Y., Ishida K., Ito T., Ito T. U., Iwasaki M., Kadono R., Kamigaito O., Kanda S., Kawagoe K., Kawall D., Kawamura N., Kitaguchi M., Koda A., Kojima K. M., Kubo K., Matama M., Matsuda Y., Matsudate Y., Mibe T., Miyake Y., Mizutani T., Nagamine K., Nishimura S., Ogitsu T., Saito N., Sasaki K., Seo S., Shimizu H. M., Shimomura K., Suehara T., Tajima M., Tanaka K. S., Tanaka T., Tojo J., Tomono D., Torii H. A., Torikai E., Toyoda A., Tsutsumi Y., Ueno K., Ueno Y., Yagi D., Yamamoto A., Yamanaka T., Yamazaki T., Yasuda H., Yoshida M., Yoshioka T.

Publikováno v: EPJ Web of Conferences, Vol 198, p 00003 (2019)

High precision measurements of the ground state hyperfine structure (HFS) of muonium is a stringent tool for testing bound-state quantum electrodynamics (QED) theory, determining fundamental constants of the muon magnetic moment and mass, and searche

Externí odkaz: https://doaj.org/article/a151e530c6aa4acfa57a5c49b53496ca

A New Approach for Measuring the Muon Anomalous Magnetic Moment and Electric Dipole Moment

Autor: Abe, M., Bae, S., Beer, G., Bunce, G., Choi, H., Choi, S., Chung, M., da Silva, W., Eidelman, S., Finger, M., Fukao, Y., Fukuyama, T., Haciomeroglu, S., Hasegawa, K., Hayasaka, K., Hayashizaki, N., Hisamatsu, H., Iijima, T., Iinuma, H., Inami, K., Ikeda, H., Ikeno, M., Ishida, K., Itahashi, T., Iwasaki, M., Iwashita, Y., Iwata, Y., Kadono, R., Kamal, S., Kamitani, T., Kanda, S., Kapusta, F., Kawagoe, K., Kawamura, N., Kitamura, R., Kim, B., Kim, Y., Kishishita, T., Ko, H., Kohriki, T., Kondo, Y., Kume, T., Lee, M. J., Lee, S., Lee, W., Marshall, G. M., Matsuda, Y., Mibe, T., Miyake, Y., Murakami, T., Nagamine, K., Nakayama, H., Nishimura, S., Nomura, D., Ogitsu, T., Ohsawa, S., Oide, K., Oishi, Y., Okada, S., Olin, A., Omarov, Z., Otani, M., Razuvaev, G., Rehman, A., Saito, N., Saito, N. F., Sasaki, K., Sasaki, O., Sato, N., Sato, Y., Semertzidis, Y. K., Sendai, H., Shatunov, Y., Shimomura, K., Shoji, M., Shwartz, B., Strasser, P., Sue, Y., Suehara, T., Sung, C., Suzuki, K., Takatomi, T., Tanaka, M., Tojo, J., Tsutsumi, Y., Uchida, T., Ueno, K., Wada, S., Won, E., Yamaguchi, H., Yamanaka, T., Yamamoto, A., Yamazaki, T., Yasuda, H., Yoshida, M., Yoshioka, T.

This paper introduces a new approach to measure the muon magnetic moment anomaly $a_{\mu} = (g-2)/2$, and the muon electric dipole moment (EDM) $d_{\mu}$ at the J-PARC muon facility. The goal of our experiment is to measure $a_{\mu}$ and $d_{\mu}$ us

Externí odkaz: http://arxiv.org/abs/1901.03047

Repolarization of Negative Muons by Polarized $^{209}$Bi Nuclei

Autor: Kadono, R., Imazato, J., Ishikawa, T., Nishiyama, K., Nagamine, K., Yamazaki, T., Bosshard, A., Döbeli, M., van Elmbt, L., Schaad, M., Truöl, P., Bay, A., Perroud, J. P., Deutsch, J., Tasiaux, B., Hagn, E.

Publikováno v: Phys. Rev. Lett. 57, 1847 (1986)

A large $\mu^-$ polarization was achieved in muonic Bi atoms with the help of the strong hyperfine field in a polarized nuclear target. Using $^{209}$Bi nuclei polarized to ($59\pm9$)% in ferromagnetic BiMn, we observed a $\mu$-$e$ decay asymmetry of

Externí odkaz: http://arxiv.org/abs/1610.08238

Performance of a Remotely Located Muon Radiography System to Identify the Inner Structure of a Nuclear Plant

Autor: Fujii, H., Hara, K., Hashimoto, S., Ito, F., Kakuno, H., Kim, S. H., Kochiyama, M., Nagamine, K., Suzuki, A., Takada, Y., Takahashi, Y., Takasaki, F., Yamashita, S.

The performance of a muon radiography system designed to image the inner structure of a nuclear plant located at a distance of 64 m was evaluated. We concluded absence of the fuel in the pressure vessel during the measurement period and succeeded in

Externí odkaz: http://arxiv.org/abs/1305.3423

Spin dynamics in copper metaborate $CuB_2 O_4$ studied by muon spin relaxation

Autor: Fukaya, A., Watanabe, I., Yamada, K., Nagamine, K.

Copper metaborate CuB$_2$O$_{4}$ was studied by muon spin relaxation measurements in order to clarify its static and dynamic magnetic properties. The time spectra of muon spin depolarization suggest that the local fields at the muon site contain both

Externí odkaz: http://arxiv.org/abs/cond-mat/0609152