Abstract
We present numerical results for the kaon -parameter, , determined in the quenched approximation of lattice QCD. Our simulations are performed using domain-wall fermions and the renormalization group improved, DBW2 gauge action which combine to give quarks with good chiral symmetry at finite lattice spacing. Operators are renormalized nonperturbatively using the RI/MOM scheme. We study scaling by performing the simulation on two different lattices with and 2.914(54) GeV. We combine this quenched scaling study with an earlier calculation of using two flavors of dynamical, domain-wall quarks at a single lattice spacing to obtain , were the first error is statistical, the second systematic (without quenching errors) and the third estimates the error due to quenching.
26 More- Received 26 August 2005
DOI:https://doi.org/10.1103/PhysRevD.73.094507
©2006 American Physical Society