Non-perturbative renormalisation of four fermion operators and B-bar B mixing with Wilson fermions
arXiv:hep-lat/0209131 · doi:10.1016/S0920-5632(03)01641-4
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 B_B^{RGI} = 1.46(7)(1).
3 pages (4 figures), Lattice2002(heavyquark)