| Budget Amount *help |
¥592,670,000 (Direct Cost: ¥455,900,000、Indirect Cost: ¥136,770,000)
Fiscal Year 2013: ¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Fiscal Year 2012: ¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2011: ¥276,900,000 (Direct Cost: ¥213,000,000、Indirect Cost: ¥63,900,000)
Fiscal Year 2010: ¥287,300,000 (Direct Cost: ¥221,000,000、Indirect Cost: ¥66,300,000)
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| Research Abstract |
The world highest sensitivity of the search for neutrino-less double beta decay has been quickly and cost-effectively achieved by deploying large amount of ^<136>Xe in the huge and ultra-low radioactivity environment, KamLAND. The previous positive claim with ^<76>Ge has been refuted by a combined analysis with an experiment using the same nuclei. Also an upper limit on the effective Majorana mass of 120～250meV has been obtained. Simultaneously, more precise geo-neutrino observation with the reactor-off data started to examine Earth models.
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