| Budget Amount *help |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2018: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2017: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Outline of Final Research Achievements |
Hadronic contribution to the muon’s anomalous magnetic moment, g-2, was computed by solving the first principle, Quantum Chromo Dynamics, on a massively parallel computer using discretized space-time lattice.
We compute two different hadronic contributions for quark mass and electric charge of nature. Statistical error of the Monte Carlo integral was highly suppressed, and all systematical errors were taken into account. Our calculation, which gives 0.5% accuracy for Hadronic Vacuum Polarization contribution and 30% error for Hadronic Light-by-Light contribution, predicts a smaller g-2 value than that of the latest experimental value by 4.2 times the standard error. It now becomes one of the most exciting issues in fundamental physics whether this discrepancy is due to unknown new particle and/or interaction beyond the Standard Model of particle physics.
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