[Clascomment] OPT-IN: Measurement of Single and Double Spin Asymmetries in Deep Inelastic Pion Electroproduction with Longitudinally Polarized Target

[Paul Stoler]

Some comments:

1. g1 and f1 are not defined in the text.

2. Fig. 3 and 4.  Re the error in the sin(2phi). By eye, it seems to essentially be given by the difference between the left (< 180) and right  (>180) side of  AUL curve. There does appear to be a difference, but beyond  that I it is difficult to say anything quantitative, especially for the pi0 case. Overall, for sin(2phi) not much is added to the lierature. 

3. The punch line is ALL. That may get it into PRL, but may not since it is getting tougher.

Overall, \"tour de force\". Good luck.