The Performance Study Of An Electro-Magnetic Calorimeter For The Leps2/Bgoegg Experiment

Yuji Matsumura,Takatsugu Ishikawa,Manabu Miyabe,Norihito Muramatsu,Hajime Shimizu, Hirotomo Hamano,Toshikazu Hashimoto, Satoshi Kido, Shin'Ichi Masumoto, Keigo Mizutani,Kyoichiro Ozawa,Takuya Shibukawa, Ken'Ichiro Shiraishi,Atsushi Tokiyasu,Natsuki Tomida,Nam Tran,Yusuke Tsuchikawa,Hirohito Yamazaki,Ryuji Yamazaki,Masaru Yosoi

PROCEEDINGS OF THE 10TH INTERNATIONAL WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS (NSTAR2015)（2016）

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摘要

An experiment to search for eta' mesic nuclei using photoproduction reaction is being carried out at SPring-8/LEPS2 facility. The final state is identified by detecting gamma's from eta decay using an electromagnetic calorimeter BGOegg. The energy calibration has been performed and the mass resolutions have been studied. pi(0), eta, eta' mesons have been clearly observed in the 2 gamma invariant mass distribution with mass resolutions of 6.7, 14.4, and 18.8 MeV/c(2), respectively.

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关键词

meson photoproduction, electro-magnetic calorimeter, eta ' mesic nuclei

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