Calculation of K→π matrix elements in quenched domain-wall QCD
- 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 M.
- Shanahan H. P.
- Taniguchi Y.
- Ukawa A.
- Yoshié T.
- 宇川 彰
- 岩崎 洋一
Publication date
March 2001
DOI Publisher
Elsevier BV ISSN
0920-5632 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 163 × 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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