[Clascomment] OPT-IN: Observation of Beam Spin Asymmetries in the Process ep -> epi+pi-X with CLAS12

[Stepan Stepanyan]

- p2, left column, polarization is quoted as 86.3%+/-3.02%, in the single pion paper the error was 2.6%, are these two analysis use the same data set? Why such difference?
- Fig.2, are these points integrated in all other variables, M_h, P_h^\perp, and z? It should be written in the txt and/or in the caption. 
- p3, Eq.(6), how big is r, the helicity dependent relative luminosity? It must be quoted 
- p3, left column, last paragraph, looking on Fig.2, clearly the conclusion in the text is incorrect. Yes, asymmetry rises, at first, for x up to 0.17, then it falls to 0.2 and stays fairly constant up to x=0.43. Only one point at x=0.35 is an outliner. I do not think this can be considered as being consistent with models predicting e(x) increase in the valence quark region
- p4, left column, in the systematic uncertainties here is no mention of accidentals, events where one of three final state particle is from a different beam electron. Was this studied and deemed as negligible 
- in few places it is stated that the results are “consistent with model calculations” yet no single model calculation is shown, why?