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We carry out a feasibility study toward a lattice QCD calcula tion of the neutron electric dipole moment (NEDM) in the presence of the Î¸ term using two different approaches. In the first method, weâ€¦ (More)

- Eigo Shintani, Shin-ichi Aoki, +5 authors Norikazu Yamada
- Physical review letters
- 2008

We present a lattice calculation of L10, one of the low-energy constants in chiral perturbation theory, and the charged-neutral pion squared-mass splitting, using dynamical overlap fermion. The exactâ€¦ (More)

- Xu Feng, Sinya Aoki, +4 authors Eigo Shintani
- Physical review letters
- 2012

We perform a nonperturbative calculation of the Ï€(0) â†’ Î³Î³ transition form factor and the associated decay width using lattice QCD. The amplitude for a two-photon final state, which is not anâ€¦ (More)

- Sinya Aoki, T. Chiu, +10 authors Kazuya Takeda
- 2012

Sinya Aoki1,2, Ting-Wai Chiu3,4, Guido Cossu5, Xu Feng5, Hidenori Fukaya6, Shoji Hashimoto5,7,âˆ—, Tung-Han Hsieh8, Takashi Kaneko5,7, Hideo Matsufuru5, Jun-Ichi Noaki5, Tetsuya Onogi6, Eigo Shintani9,â€¦ (More)

- J. Noaki, Sinya Aoki, +8 authors Norikazu Yamada

We report on a numerical simulation with 2+1 dynamical flavors of overlap fermions. We calculate pseudo-scalar masses and decay constants on a 16 3 Ã— 48 Ã— (0.11 fm) 4 lattice at five different up andâ€¦ (More)

- Eigo Shintani, Sinya Aoki, +5 authors Norikazu Yamada
- 2008

We present a lattice calculation of L10, one of the low energy constants in Chiral Perturbation Theory, and the charged-neutral pion squared mass splitting, using dynamical overlap fermion. Exactâ€¦ (More)

- Eigo Shintani, Hidenori Fukaya, +5 authors JLQCD Collaboration
- 2007

E. Shintaniâˆ—1â€ , H. Fukaya2, S. Hashimoto1,3, H. Matsufuru1, J. Noaki1, T. Onogi4, N. Yamada1,3 (for JLQCD Collaboration) 1High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japanâ€¦ (More)

- Eigo Shintani, Sinya Aoki, +4 authors Norikazu Yamada
- 2008

We study the vacuum polarization functions on the lattice with exact chiral symmetry of overlap fermion by matching the lattice data at large momentum scales with the Operator Product Expansionâ€¦ (More)

- Takashi Kaneko, Sinya Aoki, +8 authors Norikazu Yamada
- 2008

a High Energy Accelerator Research Organization (KEK), Ibar aki 305-0801, Japan b School of High Energy Accelerator Science, The Graduate Uni vers ty for Advanced Studies (Sokendai), Ibarakiâ€¦ (More)

- Hideo Matsufuru, Sinya Aoki, +8 authors Norikazu Yamada
- 2008

JLQCD and TWQCD Collaborations: H. Matsufuru âˆ—aâ€ , S. Aoki, bc T. W. Chiu, d S. Hashimoto, ae T. H. Hsieh, f T. Kaneko, ae J. Noaki, a K. Ogawa, d T. Onogi, g E. Shintani, a N. Yamada.ae aHigh Energyâ€¦ (More)