✦ LIBER ✦

Non-perturbative renormalisation of four fermion operators andB0 −B¯0 mixing with Wilson fermions

✍ Scribed by D. Bec´irevic´; V. Gime´nez; V. Lubicz; G. Martinelli; M. Papinutto; J. Reyes

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 251 KB
Volume: 119
Category: Article
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(03)01641-4

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✦ Synopsis

We present new results for the renormalisation and subtraction constants for the four fermion AF = 2 operators, computed non-perturbatively in the RI-MOM scheme (in the Landau gauge). From our preliminary analysis of the lattice data at p = 6.45, for the B" -B" mixing bag-parameter we obtain BEG' = 1.46(7)(l).