OPT-IN: Beam-Target Helicity Asymmetry E in K+룉 Photoproduction on the Neutron

[Daniel Carman]

Dear Nick et al.,

I have read through the draft of your paper on the E asymmetry in K+Sigma0
photoproduction from g14 and include my comments below. Most of my comments deal with
grammar/style. If you have any questions, let me know.

Regards,
Daniel
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General:
 - You are not consistent through with handling speed of light units c. I suggest you choose a presentation
   format with c=1.
 - The PDG recommended some time ago a new way to list resonances that you should be using throughout.
    See http://pdg.lbl.gov/2019/reviews/rpp2019-rev-n-delta-resonances.pdf.

Page 1:
 - Line 21. Use "double-polarisation".
 - Line 42. Typo on "its" (not it's).
 - Line 45. Use "(e.g. phenomenological constituent ...".
 - Line 53. Use "... broad, and overlapping ...".
 - Line 57. Use "double-polarisation".
 - Line 62. Use "... wave analysis, are essential ...".

Page 2:
 - Line 62. Use "... $K\Lambda$, $K\Sigma$, multiple ...".
 - Line 69. Use "... quark model ...".
 - Line 80. Use "... obtained for the $K^0\Lambda$ ... states~[28], ...".
 - Line 92. Use "... provides important new constraints ...".
 - Line 95 and following. Do not put section numbers in parentheses.
 - Line 99. Use "In Section V the new ...".
 - Line 107. Use "... in Hall~B ... Fig.~1). CLAS was a toroidal ...".
 - Line 110. Use "... also utilised a variety ...".
 - Line 111. Use "... time-of-flight, and calorimeter ...".
 - Line 118. Use "... polarised-photon beam impinged on ...".
 - Fig. 1 caption. Line 2. Use "... magnet, the three regions ... (R1-R3), the Cherenkov ...".
 - Fig. 1 caption. Line 6. Use "beamline".
 - Line 134. Use "... using the Hall~B M{\o}ller polarimeter ...".
 - Line 136. Use "... photon that initiated ...".
 - Line 137. I would begin a new paragraph at the sentence "During the experiment ...".
 - Line 137. Use "During the experiment, the ...".
 - Line 148. Use "photon beam".
 - Line 151. Use "... suppressed systematic uncertainties ...".
 - Line 153. Use "... g14 experiment, see ...".
 
Page 3:
 - Line 155. Use "circularly polarized".
 - Line 192. Use "The kaon missing mass ...".
 - Line 199. Use "... corresponds to the nominal mass ...".
 - Line 200. Use "... corresponds to the nominal mass ...".
 - Fig. 2. There is too much white space on this plot. I recommend that you dial in the x-axis and y-axis ranges
   to allow the kinematic range of interest to stand out more. e.g. x-axis between 0.7 and 1.5 GeV and y-axis
   between 0.8 and 1.7 GeV.
 - Fig. 2 caption. Line 4. I suggest "the red boundary".
 - Line 209. Use "... K^+\Sigma^*$, which can potentially ...".
 - Line 213. Use "... channels was simulated, ...".
 - Line 215. I suggest "... identically to the $K^+\Sigma^-$ events.". (The data are all "real".)
 - Line 221. Use "... were even smaller.".
 - Line 222. Use "... allowed us to include their effects in ...".
 - Line 223. Use "... uncertainty estimation.".
 - Line 228. Use "... originated from unpolarized ...".
 - Line 230. Problem with opening quotation marks (should be flipped around).
 - Line 232. I suggest "... $z$-vertex cuts (with $z$ along the beamline) ...".
 - Line 236. Use "Our studies have shown ...".

Page 4:
 - Line 237. Use "statistically significant".
 - Line 239. Use "... constant $D_F = ...". 
 - Line 243. Use "... therefore the effective ...".
 - Line 261. Use "... photon polarization, as well as ...".
 - Line 262. Use "... dilution factor, was estimated ...".
 - Line 273. Use "... in response to the angular ..." (remove spurious "the").
 - Line 279. Use "The curves in Fig.~3 ...".
 - Line 280. Give references here to Kaon-MAID-2000, Kaon-MAID-2017, and Bonn-Gatchina-2017.
 - Line 288. Use "... new data have the ...".
 - Line 293. Missing period at the end of the sentence.
 - Fig. 3 caption. Line 2. Use "double-polarization".
 - Line 296. Give reference to Bonn-Gatchina-2019.
 - Line 298. Use "... new solution gives a ...".
 - Line 302. Use "... Bonn-Gatchina-2019 fit for the properties ...".

Page 5:
 - Fig. 4 caption. Line 4. Use "The Bonn-Gatchina-2017 solution ...".
 - Table I caption. Line 2. "GeV" should be in rm font.
 - Table I caption. Line 4. Use "... in parentheses ...".
 - Table I caption. Line 6. Use "... new data or deviate by more ...".
 - Line 313. Use "... $P_{13}$, respectively).
 - Line 321. Use "90$^\circ$".
 - Line 322. Use "... by almost a factor of 2.".
 - Line 327. Use "85$^\circ$".
 - Line 330. Use "... seems to better describe ...".
 - Fig. 5 caption. Line 3. Use "The Bonn-Gatchina-2017 solution ...".
 - Fig. 5 caption. Line 4. Use "The solution that includes the new data ...".
 - Fig. 5 caption. Line 6. Use "... whereas the solution with an added ...".
 - Line 347. Use "... (2120), a resonance predicted ...".
 - Line 350. Use "... with the inclusion of ...".
 - Line 355. Use "... in Figs.~4 and 5.".

Page 6:
 - Line 363. Use "... future measurements ...".
 - Line 366. Use "... marginally improved the agreement with data, ...".
 - Line 368. Use "... energy bin, but was ...".
 - Line 389. Typo on "missing".

References:
 - I strongly recommend that you include the Collaboration names where applicable in the references.
 - [29]. Use "... Pereira {\it et al.}, ...".
 - [32]. Use "JLab Proposal".
 - I believe that Refs. [40] and [42] should be footnotes in the body of the text and not references.