[Clascomment] OPT-IN:First observation of correlations between spin and transverse momenta in back-to-back dihadron production at CLAS12

[Daniel Carman]

Dear Harut et al.,

Timothy provided me with the supplementary material write-up associated with your CLAS12 paper
on correlations in dihadron production that is intended for publication in the Phys. Rev. Lett.
I pass along my comments on grammar/style. If you have any questions, let me know.

Regards,
Daniel
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Page 1:
 - The title here does not match the title of the associated paper.

Page 2:
 - Line 1. Use "... is given in Ref. [1] as,".
 - Line after Eq.(2). Use "Additionally, the structure functions in the asymmetry definition can be ...".
 - In the second paragraph (beginning with "We impose the following ..."), you are not consistent with
   your usage of commas. I prefer the usage of "Oxford" commas, where you include a comma after the
   penultimate item in a list, e.g. "$M_x > 0.90$~GeV, and ..." and "$x_{F2}$, or $\Delta Y$ ...". But
   if you do not like this style, at least be consistent in your usage throughout the manuscript and the
   supplementary material.

Page 3:
 - Tables I, III, V, VII, IX, XI, XIII, XV, XVII, XIX, and XXI do not fit within your margins. I think
   this could be easily fixed putting the column units in a second row.
 - Also for Tables I, III, V, VII, IX, XI, XIII, XV, XVII, XIX, and XXI, the column labeled "Range" is
   a bit confusing. You should give the variable name here, e.g. "$x$ Range" or "$z_1$ Range" (etc.).
 - Here you center all captions (figures and tables). This is a different style than the corresponding
   paper. Be consistent.

Page 6:
 - Missing a period at the end of the caption for Table VIII.

Page 14:
 - Paragraph 2:
   - Line 1. Use "... clasdis [3], which is ...".
   - Line 5. Use "LUND".
   - Line 6. Use "... photon, and pion ...".
   - Line 7. Use "... obtained from the data include PARL(3), defining ...". By the way, should this be
     "PARJ" or "PARL"?
   - Line 8. Are there units associated with the values for PARL(3) (0.44 to 0.64)?
   - Line 9. Use "... and PARJ(12), defining the fraction ...".
   - Line 10. Use "Our changes are consistent with the latest ...".
   - Line 12. Use "... on the extracted asymmetries.".
 - Paragraph 3:
   - Line 1. Use "... are shown in Fig. 12 ...".
   - Line 2. Use "... and Monte Carlo (red).".

Page 15:
 - Fig. 12 caption. Line 2. Use "... (bottom left), and ...".
 - Do not include preprint numbers for paper that are published.