[Clascomment] OPT-IN: phi-meson photoproduction on Hydrogen in the neutral decay mode

[Enzo DeSanctis]

I have the following suggestions. 
My locator is page/column/paragraph/line
- abstract, line 3: -- > …on a liquid hydrogen target and the CLAS detector
- 1/r/2/5: here we use for the first time E_\gamma and should define it. This is done at page 4/r/1/5.
- 2/r/2/1: you can write Start Detector, with capital S and D, as it is done for the others detectors (Electromagnetic Calorimeters, Drift Chambers, Cerenkov Detectors, etc.) a few lines below.
- 3/l/1/5: The used symbols for the two times (TAG_time and ST_time) are different from those in the fig. 2 (Start Time and Tag Time). Maybe, we could use less heavy symbols, such as T_tag and T_st, and define them at 2/r/4/6-7.
- 4/l/4/3: We should define here the angle \theta_cm. This is done at 7/r/6/2-3. Moreover use always the same symbol; at page 6/l/3/3 we use \theta_CM, and in the Figs. 9 and 10 we use \theta_c.m.
- 4/r/1/4-5: -- > … for the particular E_\gamma and cos\theta_cm bin.
- 4/r/Eq.(2): We should define m_K
- 4/r/Eq.(3): We should say what is the subscript i.
- 4/r/5/4: We could use a different symbol for the slope, to avoid confusing with the velocity.
- 5/Fig. 6: We should better use <E_\gamma> = 1.9 GeV on top of the figure.
-6/l/1/1: -- > … events to the number of simulated events (ones).
- 6/r/1/Eq.(5): We do not need the subscript ‘target’ in A, \ro and L.
- 6/r/1/11: We do not need the superscript \phi in t and t_min
- 7/l/6/last line. -- > … greater
- 7/r/6/2-3: drop ‘, where \theta_cm is the … \gammap -- > \Phip’. We shold define it earlier at page 
4/l/4/3.
- 8/Fig.7: In each panel, we should better write <E\gamma> and add the unit GeV. Moreover, add the values on the x-axis.
- 9/Fig. 8: In each panel, we should better write <E\gamma> and add the unit GeV.
- 9/l/2/3: We could use a different symbol for the slope instead of \beta, to avoid confusing with the velocity.
- 9/r/1/3-4: -- > ‘Figures’, (plural).
- 10/Fig.9: In each panel, we should better write <E\gamma> and add the unit GeV. Moreover in the caption check whether the lower end-point of the E_\gamma interval is included in the interval (should we write 1.6 \leq E_\gamma …)
- 11/Fig.10: In each panel, we should better write <E\gamma> and add the unit GeV.
- 12/Fig. 11: In each panel, we should better write <cos\theta_cm>.
- 13/Fig. 12: In each panel, we should better write <cos\theta_cm>.