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The Static Approximation to B Meson Mixing using Light Domain Wall Fermions: Perturbative Renormalization and Ground State Degeneracies
Presenter: Thomas Dumitrescu — Columbia University
Norman Christ, Thomas Dumitrescu, Taku Izubuchi, Oleg Loktik
We discuss the theoretical input into our current calculation of fBd,s and BBd,s using the Iwasaki gauge action, light domain wall quarks, and a smeared static heavy quark propagator. We present the complete one-loop, mean-field improved matching of heavy-light current and four-fermion lattice operators onto the static continuum theory renormalized in MS(NDR). The large degeneracies present in a static calculation are addressed and a method for extracting fB and BB using only box sources is described; implications for future calculations are discussed.
© 2006, University of Regensburg, Dept. of Physicscontact: lat07 at physik.uni-regensburg.de