[Clascomment] OPT-IN: Semi-Inclusive pi0 target and beam-target asymmetries from 6 GeV electron scattering with CLAS

[Reinhard Schumacher]

Hello Keith et al.,

I read through your draft article "Semi-Inclusive pi0 .... with CLAS"
and have just a few comments and suggestions.  I found it to be an
interesting paper, and hope that the PRL referees agree.  It is a bit
esoteric, and anything you can add to put the results in a broader
context would help.

The introductory paragraphs are nice in this respect, I think.
However, the statement at lines 254 - 256 is a bit of a let-down to
the non-expert reader.  Is this the first place you mention
"Kotzinian-Mulders"?  How is their TMD different from any others'?  And
what does it mean to "check" the Collins effect?  Maybe state
explicitly what the check is (that the asymmetry is zero?)  by
combining this sentence with the last one in the paragraph somehow.

Figure 3 caption: There are some phrases missing: need to mention
"plotted versus x (left) and PT (right)..."  Also, use "(larger DASH)"
and "(smaller DASH)" for clarity.

References: Physical Review now lets you list the titles of the papers
along with the literature data.  You need to correct version of
bibtex, I think, to turn on this feature.  I think it is worth doing
because it makes the list of references much more informative.  Even
if this is a Letter, the length of the reference list does not count,
I believe, toward the page or word total.   Also, delete all the arXiv
references unless the paper is not yet published.

Need an overall spell-check... I saw some typos in passing.

Best Regards,
Reinhard