Figure 18. Results for the form factors obtained from the !2P (blue) and the ! z 4+3 (green) (cid:12)ts. The bands show the statistical and systematic errors added in quadrature. The left panel shows the axial form factor G A ( Q 2 ). At Q 2 = 0 the black circle indicates the experimental result for g A [109] (see also refs. [1{4]), while the lines indicate the slope of the corresponding (cid:12)t. On the right panel we plot the results for m (cid:22) G ~ ( Q 2 ), which can be compared to the experimental P 2 m