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

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.