Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2000-10-26
Nucl.Phys.Proc.Suppl. 94 (2001) 608-612
Physics
High Energy Physics
High Energy Physics - Lattice
Lattice 2000 (Improvment and Renormalisation) 5 pages Latex, 7 postscript figures
Scientific paper
10.1016/S0920-5632(01)00952-5
We describe a non-perturbative determination of $c_A$ using correlators containing the axial-vector and pseudoscalar currents at zero and non-zero momentum. We apply the method of Bhattacharya et al to extract $c_A$ from the requirement that the ratio of appropriate correlators for the PCAC relation becomes independent of time in the excited state region. We find that the result depends strongly on the order of the derivatives used in the PCAC relation. We also find that, using the lowest order derivatives, we cannot get a consistent value of $c_A$ between zero and non-zero momentum cases. The $c_A$ values that we obtain as we improve the derivatives are consistent and decrease in magnitude heading towards the perturbative result.
Collins Sara
Davies Christine. T. H.
No associations
LandOfFree
A nonperturbative determination of cA does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A nonperturbative determination of cA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A nonperturbative determination of cA will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-259839