Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2007-10-28
PoSLAT2007:351,2007
Physics
High Energy Physics
High Energy Physics - Lattice
Presented at the XXV International Symposium on Lattice Field Theory, Regensburg, Germany (30 July - 4 August 2007); 7 pages,
Scientific paper
We discuss the theoretical input into the current RBC-UKQCD calculation of $f_{B_{d, s}}$ and $B_{B_{d, s}}$ using a smeared static heavy quark propagator, light domain-wall quarks and the Iwasaki gauge action. 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 $\bar{\text{MS}}$(NDR). The large degeneracies present in a static calculation are addressed, and a method for extracting $f_B$ and $B_B$ using only box sources is described; implications for future calculations are discussed.
Christ Norman H.
Dumitrescu Thomas T.
Izubuchi Taku
Loktik Oleg
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