[Clascomment] [EXTERNAL] Re: OPT-IN: First measurement of direct photoproduction of the a2(1320) meson on the proton

[Andrea Celentano]

Dear Daniel,
thanks for your careful scrutiny of the draft, and for the nice words. 

I implemented all the comments you suggested. Concerning the “Color online”, you are right. I opened few recent PRL papers and the disclaimer is not reported any longer. Therefore, I’ll remove it. Also, I dropped all the “c” symbols, using a format with c=1.

Thanks again,
Bests,
Andrea

> On Mar 24, 2020, at 16:59, Daniel Carman <carman at jlab.org> wrote:
> 
> Dear Andrea et al.,
> 
> I have read through the draft of your paper on a2 photoproduction from g12. A
> very nice piece of work that was a pleasure to read. Most of my comments deal with
> grammar/style. If you have any questions, let me know.
> 
> Regards,
> Daniel
> ---------------------------------------------------------------------------
> General:
> - You are not consistent through with handling speed of light units c. I suggest you choose a
>   presentation format with c=1.
> - You alternatively shift the order of pion-eta and eta-pion in listing the final state. Please
>   be consistent.
> - For your figure caption, use "(Color online)". However, I don't think PRL requires this
>   disclaimer any more.
> 
> Page 1:
> - Line 38. Use "... dynamics give rise to ...".
> - Line 44. Use "So far, only a few ...".
> - Line 47. Use "... collected by the GRAAL ...".
> - Line 52. Use "Understanding $\eta \pi$ production ...".
> - Line 54. Use "non-resonant".
> - Line 59. Use "... allowing for the interpretation of the variations ...".
> - Line 60. Use "... as a signature for the existence of exotic resonances.".
> - Line 78. Use "... analysis, all three hadrons ...".
> 
> Page 2:
> - Line 97. Use "beamline".
> - Line 108. Use "vs.".
> - Line 141. Keep units with their values using, e.g., "100~MeV".
> - Line 161. Use "The final state photon CVM elements, ...".
> - Line 168. Use "... the four photon invariant mass ...".
> 
> Page 3:
> - Fig. 2 caption. Line 3. Use "... with the smallest ...".
> - Line 194. Use "vs.".
> - Line 201. Use "... after ordering the photons, the ...".
> - Line 203. Use "... corresponding to the $\eta$, with some ...".
> - Line 209. Use "... variables that can be split ...".
> - Line 210. Use "... allows reconstruction from each event source ...".
> - Line 215. Use "... to assign to each event a ...".
> - Line 219. Use "... as control variables.".
> - Line 227. Use "... resulting in a bias ...".
> - Line 237. Use "... code that included knowledge ...".
> 
> Page 4:
> - Table I. Wrong units on t width.
> - Table II.
>    - Capitalize "Systematic Uncertainty Source".
>    - Four first four sources listed, remove the extra space between the value and the
>      "%" symbol.
> - Line 256. Use "... the photon ordering ...".
> - Line 257. Use "... and the sPlot method."
> - Line 264. Use "... equal to the square root ...".
> - Line 281. Use "... cross section was obtained ...".
> - Line 299. Use "exponentially suppressed". (No hyphen if first word is an adverb.)
> - Line 302. Use "This ranged from a few MeV ...".
> - Line 324. Use "... shows the statistical ...".
> - Line 326. Use "The colored bands at the bottom show ...".
> - Line 328. Use "... uncertainty for $d^\sigma ...".
> 
> Page 5:
> - Line 350. Use "... trajectories only, which for the production ...".
> - Line 357. Use "... implies the parameters of the Regge ...".
> - Line 387. Use "... GeV$^2$, which can be ...".
> 
> Page 6:
> - Fig. 4 caption. Last line. Use "... respectively for a beam energy of 4~GeV ...".
> - Line 402. Use "... Council (STFC), ...". Remove "under grant numbers".
> 
> References:
> - [6]. Drop "1405.4286".
> - [15]. Use "B.A. Mecking".
> - [17]. Use "M.D. Mestayer".
> - [18]. Use "E.S. Smith".
> - [20]. Use "Y.G. Sharabian".
> - For CLAS-Note references, [21], [22], [23], give URL to file location.
> - [27] is out of order. Should go after [28].
> 

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