[Clascomment] OPT-IN: Differential cross sections and recoil polarizations for the reaction gamma p --> K^+ Sigma^0

[Enzo DeSanctis]

I read the version of the paper dated April 13. 
I think the results are very nice. Congratulation for the excellent work.

I have only a few comments on the abstract and the introduction.

Abstract, line7: I would write ‘… increase in photon energy coverage.’

In the following my locator is page/column/paragraph/line

1/l/1/2: I would add ref [37] to the papers [1-7] searching for missing baryon resonances in the strange sector.

1/r/1/5: You should also say something about results of GRAAL experiment [18] mentioned at the beginning of the paragraph. Then I would begin a new paragraph with the next sentence ‘World data on K^+Sigma^0 polarization … , however.’
You could also move the following paragraph ‘In this paper, ….topology instead.’ three paragraphs after, that is I would first describe the scenario before this measurement highlighting the difficulties and problems of theoretical and phenomenological models to describe the data  and the weakness of experimental points to constrain theory.

2/l/4/3-7: the sentence ‘In addition … observables.’ is misplaced here. You should give elsewhere the information about LEPS and FROST measurements, while you could add ref [20] in the CLAS program for such measurements [21-23].

21/ref. [37] by S.A. Pereira has been published in Phys. Lett.  B 688 (2010) 289.