[Clascomment] OPT-IN:First comprehensive measurement of spin observables and differential cross sections dsigma/dt in omega photoproduction off the proton for 2.7 < Egamma < 5.2 GeV using CLAS

[Stepan Stepanyan]

- Laget’s affiliation with JLAB is incorrect.
- line 13, photons energy range, 2.7 GeV - in the text and the presented data have much lower photon energy ~1.55 GeV
- line 63, the sentence is unclear, “The low-energy regime close to the reaction threshold, where nucleon resonances dominate the photoproduction of ω mesons, and the Regge regime are analytically connected. “ either unfinished sentence or may be “and” must be removed?
- line 66, why not “t-dependence”, do we need to have “-t”? It talks about momentum transfer dependence of the cross section
- line 75, the lower photon energy limit is quoted as 1.6 GeV. In the abstract it is 2.7 GeV, and the lower W value corresponds to photon energy of 1.5 GeV. Must be consistent with quoting the energy range
- line 103, either remove “at Jefferson Laboratory” or move it after earlier reference to the CLAS collaboration on line 99
- sentence starting at line 214, “The full set ...”, the supplemental material is not provided (no link), but it looks like data in Figures 5, 6, and 7 are what is referred here for d\sigma/dcos(\theta). So if that is the case, then the reference to 10 MeV and 20 MeV wide bins is reversed and generally messed up. In Fig.5, W range 1.95-2.35 GeV, the bin width is 20 MeV, Fig.6 and 7, W range 2.35-2.83 GeV, bin size is 10 MeV. Bin width is correct for d\sigma/dt figures.
-  line 247, “For each (E_\gamma ...”, change E_\gamma to W, the energy bins are quoted as W-bins on the figures and in the text before (specially Fig. 3 and 4)
- line 299, there is no magenta curve on Figs. 2 and 3. The predictions of [33] are reverend as “red curves” in the caption of Fig.2
- caption of Fig.3, it does not look like the definition of red curves in Fig.2, and Fig.3 are the same
- line 312, should not “The” be a lower case after “:” 
- line 337, the W range is inconsistent with data, the lowest bin for data is 1.95 GeV, and why 3-digits. For the presented figures, W for cos\theta dependence is 1.95 to 2.83 GeV