Proposal for new measurements of muonic helium hyperfine structure at J-PARC Seiso Fukumura, Patrick Strasser, Takashi Ino, Takayuki Oku, Takuya Okudaira, Sohtaro Kanda, Masaaki Kitaguchi, Koichiro Shimomura, Hirohiko M. Shimizu, Hiroyuki A. Torii and Shoichiro Nishimura EPJ Web Conf., 262 (2022) 01012 Published online: 27 April 2022 DOI: 10.1051/epjconf/202226201012