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Non-perturbative scale evolution of four-fermion operators

✍ Scribed by M. Guagnelli; J. Heitger; C. Pena; S. Sint; A. Vladikas

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
260 KB
Volume
119
Category
Article
ISSN
0920-5632

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✦ Synopsis

We apply the SchrGdinger Functional (SF) f ormalism to determine the renormalisation group running of fourfermion operators which appear in the effective weak Hamiltonian of the Standard Model. Our calculations are done using Wilson fermions and the parity-odd components of the operators. Preliminary results are presented for the operator 0"~ = (Sy,d) (%y,ysd).

πŸ“œ SIMILAR VOLUMES

Non-perturbative renormalisation of four
Non-perturbative renormalisation of four fermion operators andB0 βˆ’BΒ―0 mixing with Wilson fermions
✍ D. BecΒ΄irevicΒ΄; V. GimeΒ΄nez; V. Lubicz; G. Martinelli; M. Papinutto; J. Reyes πŸ“‚ Article πŸ“… 2003 πŸ› Elsevier Science 🌐 English βš– 251 KB

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' =