| Budget Amount *help |
¥45,760,000 (Direct Cost: ¥35,200,000、Indirect Cost: ¥10,560,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2011: ¥38,870,000 (Direct Cost: ¥29,900,000、Indirect Cost: ¥8,970,000)
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| Research Abstract |
In this research project, we perform an experiment to study a process of a dynamical mass generation of hadrons. The experiment aims to measure clearly bind states and invariant mass spectra of omega mesons in nucleus, simultaneously. Detectors used in the experiment are gamma-ray detectors (BGO EGG), thin scintillators and a cylindrical drift chamber (CDC). The CDC has a narrow drift length (1.25mm) and it is difficult to design and manufacture the CDC. Constructions of these detectors are finished. We evaluate performances of these detectors using a gamma-ray beam at Spring-8. The detectors show enough performances for our experiment. Achieved energy resolution of the BGO EGG for a gamma-ray of 1 GeV energy is 1.2 % and a reconstruction of neutral pi meson is already succeeded using data taken at Spring-8. Physics data to search for a bind state of omega mesons in nucleus are collected using a carbon target and a gamma-ray beam at Spring-8 LEPSII.
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