Spectroscopy of nuclei with multi-strangeness by using new S-2S spectrometer at J-PARC

J-PARCにおける新しいS-2Sスペクトロメータを使ったマルチストレンジネス原子核の分光

後神 利志*; 江川 弘行; 長谷川 勝一   ; 早川 修平; 細見 健二  ; 今井 憲一; 市川 裕大   ; 七村 拓野; 成木 恵; 佐甲 博之   ; 佐藤 進  ; 田村 裕和; 谷田 聖   ; 他37名*

Gogami, Toshiyuki*; Ekawa, Hiroyuki; Hasegawa, Shoichi; Hayakawa, Shuhei; Hosomi, Kenji; Imai, Kenichi; Ichikawa, Yudai; Nanamura, Takuya; Naruki, Megumi; Sako, Hiroyuki; Sato, Susumu; Tamura, Hirokazu; Tanida, Kiyoshi; 37 of others*

The missing mass spectroscopy of hypernuclei is planned at the Japan Proton Accelerator Research Complex (J-PARC) by using the reaction. We are constructing a new magnetic spectrometer, S-2S, which has a better momentum resolution [ (FHWM)] than that of an existing spectrometer (SKS) at J-PARC. S-2S would give us an opportunity to confirm the existence of hypernuclei as a peak structure owing to both the high momentum resolution and its reasonably large solid angle. Brief descriptions of our experiment and of its preparation status are presentedin this article.