Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2000-01-05
Int.J.Mod.Phys. A15 (2000) 3521-3534
Physics
High Energy Physics
High Energy Physics - Lattice
18 pages including 1 eps figure
Scientific paper
10.1142/S0217751X00001188
We calculate one-loop renormalization factors of three-quark operators, which appear in the low energy effective Lagrangian of the nucleon decay, for $O(a)$-improved quark action and gauge action including six-link loops. This calculation is required to predict the hadronic nucleon decay matrix elements in the continuum regularization scheme using lattice QCD. We present detailed numerical results of the one-loop coefficients for general values of the clover coefficients employing the several improved gauge actions in the Symanzik approach and in the Wilson's renormalization group approach. The magnitudes of the one-loop coefficients for the improved gauge actions show sizable reduction compared to those for the plaquette action.
Aoki Sadao
Kuramashi Yoshinobu
Onogi Tetsuya
Tsutsui Naoto
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