Calculation of K → π matrix elements in quenched domain-wall QCD
- CP-PACS, Collaboration
- Khan, A. Ali
- Aoki, S.
- Aoki, Y.
- Burkhalter, R.
- Ejiri, S.
- Fukugita, M.
- Hashimoto, S.
- Ishizuka, N.
- Iwasaki, Y.
- Izubuchi, T.
- Kanaya, K.
- Kaneko, T.
- Kuramashi, Y.
- Nagai, K.-I.
- Noaki., J.
- Okawa, Masanori
- Shanahan, H.P.
- Taniguchi, Y.
- Ukawa, A.
- Yoshie, T.
Publication date
March 2001
DOI Publisher
Elsevier BV Journal
Nuclear Physics B - Proceedings SupplementsAbstract
We explore the possibility for an evaluation of non-leptonic ΔS = 1 K decay amplitudes through the calculation of K → π matrix elements using domain-wall QCD. The relation between the physical K → ππ matrix elements and K → π matrix elements deduced from chiral perturbation theory is recapitulated. Quenched numerical simulations are performed on an 16[3] × 32 × 16 lattice at a lattice spacing a[-1] ≈ 2GeV for both the standard plaquette gauge action and a renormalization-group improved gauge action, and reasonable signals for K → π matrix elements are obtained. Preliminary results are reported on the K → ππ matrix elements, and results from two actions are compared
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