OPT-IN:Target and Double Spin Asymmetries of Deeply Virtual Ï0 Production with a Longitudinally Polarized Proton Target and CLAS

[Kijun Park]

Hi,

This is very nice and impressive results !
I have few general and editorial comments.

General comments:
1) I was surprised that there is no remark of acceptance and radiative corrections.
Although these are not significant impact to the result, I hope.

2) I am confused your conclusion "fair agreement with GL" 
First of all, it should be GGL, secondly which version you are talking about ?
There are two reference [12] and [17]. In the text you cite [17] but on the figure 4 with [12] ?
Are they different ? or same ?

3) I don't see target polarization uncertainty. (like beam polarization)

4) line230: Does your -t range start from "0" ?


Editorial comments:
1/ line 161: ECEC -> EC-EC, ICIC-> IC-IC, ECIC-> EC-IC. Just consistently use as you did Fig2. caption.
2/ all "error" should be "uncertainty"
3/ Q2 and -t unit should be consistently used. either (GeV/c)^2 or GeV^2
4/ Fig.2 x-axis numbers are chopped out.
5/ Fig.3 should be larger, text font on the plot is too small for PRL, <-t>=0.2xGeV2 (can't read it) is hidden by systematic error bars.
6/ Fig.2 in caption, {Q2, x} should be (Q2, x); consistent parenthesis.
7/ Fig. 4, x-axis title -t unit has double parenthesis [()]
8/ line267, 262, 315: $t$ -> $-t$
9/ line278: GL should be GGL