Calcutation of kaon matrix elements in quenched domain - wall QCD with DBW 2 gauge action
نویسنده
چکیده
We give a progress report of our new a −1 ≈ 3 GeV quenched calculation of kaon matrix elements with domain-wall fermion and DBW2 gauge action. Our smaller lattice spacing allows us to address the effect of charmed quark on the lattice. We show preliminary results of BK renormalized non-perturbatively and K → π matrix elements.
منابع مشابه
ar X iv : h ep - l at / 0 41 00 26 v 1 1 9 O ct 2 00 4 Kaon matrix elements in domain - wall QCD with DBW 2 gauge action
We present calculations of the decay constants and kaon B-parameter BK as the first stage of RBC Collabo-ration's quenched numerical simulations using DBW2 gauge action and domain-wall fermions. Some of potential systematic errors and consistency to previous works are discussed.
متن کاملar X iv : h ep - l at / 0 21 10 13 v 2 1 3 N ov 2 00 2 1 Calculation of weak matrix elements in domain - wall QCD with the DBW 2 gauge action
We report the details of our ongoing quenched calculations of weak matrix elements using the combination of domain-wall fermions and the DBW2 gauge action on lattices with a −1 ≈ 3 GeV. A strategy to avoid the problem of fixed topological charge is introduced in generating gauge configurations. After studying the basic run parameters and elemental quantities, we present a preliminary result for...
متن کاملar X iv : h ep - l at / 0 21 10 13 v 1 6 N ov 2 00 2 1 Calculation of weak matrix elements in domain - wall QCD with the DBW 2 gauge action
We report the details of our ongoing quenched calculations of weak matrix elements using the combination of domain-wall fermions and the DBW2 gauge action on lattices with a −1 ≈ 3 GeV. A strategy to avoid the problem of fixed topological charge is introduced in generating gauge configurations. After studying the basic run parameters and elemental quantities, we present a preliminary result for...
متن کاملKaon B Parameter from Quenched Domain-wall Qcd * Cp-pacs Collaboration : A
We report on a calculation of BK with domain wall fermion action in quenched QCD. Simulations are made with a renormalization group improved gauge action at β = 2.6 and 2.9 corresponding to a ≈ 2GeV and 3GeV. Effects due to finite fifth dimensional size N5 and finite spatial size Nσ are examined in detail. Matching to the continuum operator is made perturbatively at one loop order. We obtain BK...
متن کاملDomain wall quarks and kaon weak matrix elements
We present lattice calculations of kaon matrix elements with domain wall fermions. Using lattices with 6/g2 = 5.85, 6.0, and 6.3, we estimate BK(μ ≈ 2 GeV) = 0.628(47) in quenched QCD which is consistent with previous calculations. At 6/g2 = 6.0 and 5.85 we find the ratio fK/mρ in agreement with the experimental value, within errors. These results support expectations that O(a) errors are expon...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003