| Co-Investigator(Renkei-kenkyūsha) |
SAWADA Shin'ya 高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (70311123)
MURAMATSU Norihito 東北大学, 電子光理学研究センター, 准教授 (40397766)
NARUKI Megumi 京都大学, 理学研究科, 准教授 (00415259)
TANIDA Kiyoshi ソウル国立大学校, 物理天文学部, 教授 (00360587)
NAKANO Takashi 大阪大学, 核物理研究センター, 教授 (80212091)
YORITA Tetsuhiko 大阪大学, 核物理研究センター, 助教 (30372147)
YOSOI Masaru 大阪大学, 核物理研究センター, 教授 (80183995)
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| Budget Amount *help |
¥313,950,000 (Direct Cost: ¥241,500,000、Indirect Cost: ¥72,450,000)
Fiscal Year 2013: ¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2012: ¥72,020,000 (Direct Cost: ¥55,400,000、Indirect Cost: ¥16,620,000)
Fiscal Year 2011: ¥69,810,000 (Direct Cost: ¥53,700,000、Indirect Cost: ¥16,110,000)
Fiscal Year 2010: ¥81,120,000 (Direct Cost: ¥62,400,000、Indirect Cost: ¥18,720,000)
Fiscal Year 2009: ¥75,140,000 (Direct Cost: ¥57,800,000、Indirect Cost: ¥17,340,000)
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| Research Abstract |
(1)Based on the data with 2.6 times higher statistics, we observed a peak structure at around 1530 MeV/c2 in the gamma"n"->K-K+X reaction. However, its statistical significance is found to be lower. The peak structure is rather enhanced if we reject events associate a recoiled protons which do not concern a Theta production by using information from the timing counter located just downstream the deuterium target. (2)We measured an upper limit of the cross section of the p(pi-,K-)Theta+ reaction, giving the decay width of Theta+ less than 1 MeV. (3)We observe charge asymmetry of the Lambda(1405) productions in the gamma p->K+pi+-Sigma-+ reactions. (3)An experimental study of Lambda(1405) via the d(K-,n) reaction is ready to run. (4)Construction of a large acceptance spectrometer is in progress at the LEPS2 beam line. (5)The LEPS2 beam line is now in operation.
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