Measurement of the differential cross sections of the elastic scattering in momentum range 470 to 850 MeV/

運動量470から850MeV/領域における弾性散乱微分断面積の測定

三輪 浩司*; 藤田 真奈美; 長谷川 勝一   ; 細見 健二  ; 市川 裕大   ; 今井 憲一*; 七村 拓野; 成木 恵; 佐甲 博之   ; 佐藤 進  ; 田村 裕和; 谷田 聖   ; 山本 剛史  ; 他58名*

Miwa, Koji*; Fujita, Manami; Hasegawa, Shoichi; Hosomi, Kenji; Ichikawa, Yudai; Imai, Kenichi*; Nanamura, Takuya; Naruki, Megumi; Sako, Hiroyuki; Sato, Susumu; Tamura, Hirokazu; Tanida, Kiyoshi; Yamamoto, Takeshi; 58 of others*

A high statistics scattering experiment is performed at the J-PARC Hadron Experimental Facility. Momentum-tagged s running in a liquid hydrogen target are accumulated by detecting the reaction with a high intensity beam of 20 M/spill. The differential cross sections of the elastic scattering were derived with a drastically improved accuracy by identifying approximately 4,500 events from 1.72 10 . The derived differential cross section shows a clear forward-peaking angular distribution for a momentum range from 470 to 850 MeV/. The accurate data will impose a strong constraint on the theoretical models of the baryon-baryon interactions.