[Clascomment] OPT-IN: Measurement of the beam spin asymmetry of ep -> e'p'eta in the deep-inelastic regime with CLAS

[Michel Gar�on]

Hello Bo et al.,

Here are a few comments on your draft paper:
- line 33: in the exp. DVCS references, replace [6] by M. Defurne et al. (Jefferson Lab Hall A collaboration)PRC 92, 055202 (2015), which supersedes Camacho et al. (re-analysis of the same data). Also add H.-S. Jo et al. (CLAS collaboration), PRL 115, 212003 (2015). 
- line 52: here (and probably later in line 372) should quote in addition the Hall A paper M. Defurne et al., PRL 117, 262001 (2016) which presents a comparison with GK as well.
- Eq(1): the two terms F^pi and F^eta should be separated.
- line 87: To PERFORM
- lines 127-128: FOR the first time
- line 210: these sidebands are very (too?) close to the tails of the peak. Risk of overestimating the background? I would have chosen [3.5,6.5] or [4,7].
- line 221: no minus sign in front of t.
- line 232: The first-order --> First-order (since they are not explicitly defined)
- line 251: moment --> amplitude, since this is not strictly speaking a moment.
- line 270: The background asymmetry was automatically taken care of in the subtraction. I would mention here only the deviation from the linear shape.
- lines 270-276: I suppose the numbers refer to absolute uncertainties on the asymmetries. To avoid any confusion, write 0.075,....,0.082. (in relative, you would have 0 systematics whenever you measure (close to) 0 asymmetries, which is not the case).
- Ref. [3]: \¨u missing in the first name.
- Ref. [27]: remove the arXiv number, to be consistent with other references.

Best regards,
Michel Garçon.