We discuss the improvement of local four-fermion operators and we present the one-loop perturbative calculation of their renormalization constants and mixing coefficients in the theory defined by a nearest-neighbour improved lattice action. This calculation is a necessary ingredient for improved Monte Carlo computations of hadronic matrix elements relevant for weak interactions.
4-FERMION OPERATORS WITH IMPROVED NEAREST-NEIGHBOR ACTION / R., Frezzotti; Gabrielli, Emidio; C., Pittori; G. C., Rossi. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 373:(1992), pp. 781-794. [10.1016/0550-3213(92)90276-H]
4-FERMION OPERATORS WITH IMPROVED NEAREST-NEIGHBOR ACTION
GABRIELLI, Emidio;
1992-01-01
Abstract
We discuss the improvement of local four-fermion operators and we present the one-loop perturbative calculation of their renormalization constants and mixing coefficients in the theory defined by a nearest-neighbour improved lattice action. This calculation is a necessary ingredient for improved Monte Carlo computations of hadronic matrix elements relevant for weak interactions.File in questo prodotto:
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