Domain Wall Quarks and Kaon Weak Matrix Elements
نویسندگان
چکیده
منابع مشابه
Domain 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 کاملQCD with domain wall quarks and applications to weak matrix elements
Using domain wall fermions, we estimate BK (µ ≈ 2 GeV) = 0.628(47) in quenched QCD which is consistent with previous calculations. At 6/g 2 = 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 exponentially suppressed in low energy (E ≪ a −1) observables, and indicate that domain wall fermions ha...
متن کاملLattice QCD with domain wall quarks and applications to weak matrix elements
Using domain wall fermions, we estimate BK(μ ≈ 2 GeV) = 0.628(47) in quenched QCD which is consistent with previous calculations. At 6/g = 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 exponentially suppressed in low energy (E a) observables, and indicate that domain wall fermions have good s...
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K → π and K → 0 weak matrix elements of ∆S = 1 operators have been measured in 2+1 flavor domain wall fermion (DWF) QCD on (3 fm)3 lattices with a−1 = 1.73(3) GeV. As is well known, using these matrix elements and chiral perturbation theory allows a determination of the K → ππ matrix elements that enter in the quantitative value for the ∆I = 1/2 rule and ε ′/ε . Two light dynamical sea quark ma...
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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.
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1997
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.79.3595