Abstract
We present a preliminary calculation of BK using domain-wall valence quarks and 2+1 flavors of improved staggered sea quarks. Both the size of the residual quark mass, which measures the amount of chiral symmetry breaking, and of the mixed meson splitting ∆mix, a measure of taste-symmetry breaking, show that discretization effects are under control in our mixed action lattice simulations. We show preliminary data for pseudoscalar meson masses, decay constants and BK. We discuss general issues associated with the chiral extrapolation of lattice data, and, as an example, present a preliminary chiral and continuum extrapolation of fπ. The quality of our data shows that the good chiral properties of domain-wall quarks, in combination with the light sea quark masses and multiple lattice spacings available with the MILC staggered configurations, will allow for a precise determination of BK
Original language | English (US) |
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Article number | 375 |
Journal | Proceedings of Science |
Volume | 42 |
State | Published - Jan 1 2007 |
Externally published | Yes |
Event | 25th International Symposium on Lattice Field Theory, LATTICE 2007 - Regensburg, Germany Duration: Jul 30 2007 → Aug 4 2007 |
ASJC Scopus subject areas
- General