| Project/Area Number |
20540261
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Nagoya University |
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Principal Investigator |
HAYAKAWA Masashi (KAYAKAWA Masashi) 名古屋大学, 理学研究科, 准教授 (20270556)
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| Project Period (FY) |
2008 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 素粒子理論 / ゲージ理論 / 場の量子論 / 異常磁気能率 / クォーク質量 / QED / 多フレーバ QCD / 高次摂動計算 / 格子ゲージ理論 / conformal dynamics / 素粒子(理論) / レプトンg-2 / Nearly conformal dynamics / クォークの質量の決定 / レプトン異常磁気能率 / 電弱対称性の動的破れ / 格子QCDシミュレーション / 赤外共変不変性 / QCD / クォークの質量 / 微細構造定数 |
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| Research Abstract |
I completed the computation of the tenth-order QED contribution to the anomalous magnetic dipole moment (g－2) of the electron, and presented the most precise value for the fine structure constant. As for the muon g－2, by improving the numerical precision of the eighth-order QED contribution, and by completing the computation of the tenth-order contribution, the QED contribution in the muon g － 2 wasdetermined with the uncertainty less than that to be achieved by the next-generationexperiments. By simulating QED on the lattice, the electromagnetic correction in the masses of mesons was computed, and as a consequence, the masses of up, down and strange quarks can be determined, which are at present recognized as the standards. I carried out the simulation based on the lattice gauge theory to search the gauge system which may be responsible to the spontaneous breakdown of electroweak symmetry. I pointed out that the SU(3) gauge theory with ten-flavors of massless Dirac fermions is one of such candidates.
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