Non-perturbative renormalisation of four fermion operators and B-bar B mixing with Wilson fermions
Abstract
We present new results for the renormalisation and subtraction constants for the four fermion Delta F=2 operators, computed non-perturbatively in the RI-MOM scheme (in the Landau gauge). From our preliminary analysis of the lattice data at beta=6.45, for the B-bar B mixing bag-parameter we obtain BBRGI = 1.46(7)(1).
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