A Nonperturbative Determination of C a and the Scaling of F Π and M
نویسنده
چکیده
We calculate the O(a) improvement coefficient for the axial-vector current using the nonperturbative method proposed by the LANL group. Results for the coefficient in the range β = 5.93 to 6.2 are presented. We find cA is close to the 1-loop tadpole-improved perturbative value. In addition, scaling of the pseudoscalar decay constant and renormalised quark mass is improved compared to that obtained using the (larger) cA values obtained by the ALPHA collaboration.
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