| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Outline of Final Research Achievements |
The electric dipole moment (EDM) is a key quantity to probe the universe's matter dominance and to test the physics beyond the standard model in particle physics. We develop a new method to compute the nucleon EDM in the presence of the background electric field on a lattice. This method does not require the zero-momentum extrapolation and can suppress the gauge fluctuations, so that it can be applicable to measure other quantities that include gauge fields.
We also study a general dispersion relation of the spectral functions on a lattice, by which we performed a precise measurement of a Kobayashi-Maskawa matrix element |Vus| in combining with an inclusive tau decay experimental data and the lattice hadronic vacuum polarization functions. We then extend the method to the nucleon correlation functions that can be used to study nucleon inclusive decay processes such as a nucleon-neutrino scattering on a lattice.
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