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arXiv · 0710.2862

Non-perturbative renormalisation of four-fermion operators in N_f=2 QCD

P. Dimopoulos·G. Herdoiza·F. Palombi·M. Papinutto·C. Pena·A. Vladikas·H. Wittig
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Abstract

We present results for the non-perturbative renormalisation of four-fermion operators with two flavours of dynamical quarks. We consider both fully relativistic left current-left current operators, and a full basis for $ΔB=2$ operators with static heavy quarks. The renormalisation group running of the operators to high energy scales is computed in the continuum limit for a family of Schroedinger Functional renormalisation schemes, via standard finite size scaling techniques. The total renormalisation factors relating renormalisation group invariant to bare operators are computed for a choice of lattice regularisations.

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P. Dimopoulos, G. Herdoiza, F. Palombi, M. Papinutto, C. Pena, A. Vladikas, H. Wittig. 2007-10-24. Non-perturbative renormalisation of four-fermion operators in N_f=2 QCD. https://arxiv.org/abs/0710.2862

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