4 research outputs found
Neutral B Meson Mixing and Heavy-light Decay Constants from Quenched Lattice QCD
We present high-statistics results for neutral -meson mixing and
heavy-light-meson leptonic decays in the quenched approximation from
tadpole-improved clover actions at and . We consider
quantities such as , , and the full
matrix elements as well as the corresponding SU(3)-breaking
ratios. These quantities are important for determining the CKM matrix element
.Comment: LATTICE98(heavyqk). Revised version. Typos in the second and third
equations corrected. Very small changes to text. Results unchange
Delta S=2 and Delta I=3/2 Matrix Elements in Quenched QCD
We present preliminary results for B_K, B_7^{3/2} and B_8^{3/2} from two
high-statistics lattice computations. These calculations are performed at
beta=6.0 and 6.2 in the quenched approximation, using mean-field-improved
Sheikholeslami-Wohlert fermionic actions.Comment: LATTICE98(matrixelement), minor clarification