We present preliminary results for the Renormalization Group (RG) running of the complete basis of DeltaF = 2 four-fermion operators in QCD with Nf = 3 dynamical massless flavors. We use O(a)-improved Wilson fermions in a mixed action setup, with chirally rotated Schroedinger functional (chiSF) boundary conditions for the valence quarks and Schroedinger functional (SF) boundary conditions for the sea quarks. The RG evolution operators are evaluated non-perturbatively via the matrix step-scaling functions (matrix SSF) while the perturbative running is computed using a new approach relying on the Poincaré-Dulac theorem.
Marinelli, R., Campos Plasencia, I., Dalla Brida, M., Maria de Divitiis, G., Lytle, A., Papinutto, M., et al. (2024). Non-perturbative mixing and renormalisation of DeltaF=2 Four-Fermion Operators. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? The 40th International Symposium on Lattice Field Theory (LATTICE2023) [10.22323/1.453.0270].
Non-perturbative mixing and renormalisation of DeltaF=2 Four-Fermion Operators
Maria de Divitiis, Giulia
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2024-11-01
Abstract
We present preliminary results for the Renormalization Group (RG) running of the complete basis of DeltaF = 2 four-fermion operators in QCD with Nf = 3 dynamical massless flavors. We use O(a)-improved Wilson fermions in a mixed action setup, with chirally rotated Schroedinger functional (chiSF) boundary conditions for the valence quarks and Schroedinger functional (SF) boundary conditions for the sea quarks. The RG evolution operators are evaluated non-perturbatively via the matrix step-scaling functions (matrix SSF) while the perturbative running is computed using a new approach relying on the Poincaré-Dulac theorem.| File | Dimensione | Formato | |
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