A new approach for measuring the muon anomalous magnetic moment and electric dipole moment

• Published in: Progress of theoretical and experimental physics Vol. 2019; no. 5
• Main Authors: 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, Ikeda, H, Ikeno, M, Inami, K, Ishida, K, Itahashi, T, Iwasaki, M, Iwashita, Y, Iwata, Y, Kadono, R, Kamal, S, Kamitani, T, Kanda, S, Kapusta, F, Kawagoe, K, Kawamura, N, Kim, B, Kim, Y, Kishishita, T, Kitamura, R, 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
• Format: Journal Article
• Language: English
• Published: Oxford Oxford University Press 01.05.2019; Oxford University Press on behalf of the Physical Society of Japan
• Subjects: Accelerator Physics; Experiments; High Energy Physics - Experiment; Instrumentation and Detectors; Nuclear physics; Physics; Science; C31; C07; muon: electric moment; C31 Experiments using charged lepton beams; muon: magnetic moment; J-PARC Lab; magnetic moment: anomaly; solenoid; muon: beam; beam emittance: transverse; C07 Particle properties; electric moment; sensitivity; muon: decay; experimental methods
• ISSN: 2050-3911; 2050-3911
• DOI: 10.1093/ptep/ptz030

Abstract 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 $d_{\mu}$ using an independent method with a factor of 10 lower muon momentum, and a factor of 20 smaller diameter storage-ring solenoid compared with previous and ongoing muon $g-2$ experiments with unprecedented quality of the storage magnetic field. Additional significant differences from the present experimental method include a factor of 1000 smaller transverse emittance of the muon beam (reaccelerated thermal muon beam), its efficient vertical injection into the solenoid, and tracking each decay positron from muon decay to obtain its momentum vector. The precision goal for $a_{\mu}$ is a statistical uncertainty of 450 parts per billion (ppb), similar to the present experimental uncertainty, and a systematic uncertainty less than 70 ppb. The goal for EDM is a sensitivity of $1.5\times 10^{-21}~e\cdot\mbox{cm}$.