[Clascomment] OPT-IN:Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target

[Silvia Pisano]

Dear Daniel,

thanks a lot for your inputs, that we implemented almost completely in our
paper.

Please refer to our comments below about a couple of points.

Thanks again,

Angela, Erin and Silvias


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On 20 December 2014 at 19:19, Daniel Carman <carman at jlab.org> wrote:

> Silvia et al.,
>
> I have read through the draft DVCS paper dated Dec. 12. For the most part
> I think the
> paper is well constructed, but I have a list of suggestions to improve the
> readability.
> Let me know if you have any questions.
>
>
>                                                 Regards,
>
>                                                 Daniel
>
>
> ************************************************************************************
> General.
>  - You are not consistent with your usage of speed of light units in this
> paper. I suggest that
>    you let c=1 throughout.
>
>
We decided to keep the "c" factors to be consistent with the PRL, and fixed
all the units accordingly.


 - Eq.(12),(13),(14). These equations are not well introduced. What are the
> $c_n$ and $s_n$ terms? Why are the sums
>     truncated to n=2 and/or n=3?
>
>
We modified the text to introduce the Fourier coefficients, while we refer
to the cited paper for further details.



> Page 5.
>  - Fig. 5. This drawing is not technically correct due to the way the LAC
> modules are draw. They were only
>    included in S1 and S2.
>


Since we didn't use the LAC modules, we removed them from the picture.


Page 10.
>
  - Line 585. Use "... constant fit is still reasonable.".


We slighty changed this part following a suggestion from Volker.




> Page 13.
>  - Line 708. Use "... are raw; no $\pi^0$ ...".
>  - Line 712. Use "... free proton (blue points) ...".
>  - Fig. 17 caption.
>    - Line 3. Use "... and square blue points are ...".
>
>
Page 14.
>  - Line 717. Use "... going from a proton to a carbon target."
>  - Line 722. Use "... impact our result within the ...".
>


All the carbon paragraph changed pretty much following some suggestions
from Sebastian Khun.


Page 17.
>    - Line 3. You point out the highest t bin for Q2=2.41 GeV2 has limited
> coverage, but you have said nothing
>       about the lowest t bin at Q2=3.31 GeV2 that has only a single data
> point (i.e. it has even more limited
>       phi coverage). Any comment? The same question is applicable to the
> other plots of asymmetries.
>
>
Yes, you are right. We added a comment on that bin also.



> Page 18.
>  - Fig. 19 caption.
>    - General point. The orange and the red colors are indistinguishable.
> This is also true for
>      Figs. 20, 21, 23, 24, 25, and 26.
>

We tried different sets of colors, but since we need to be consistent among
the various plots and we have - for example in the DSA case - 4 curves to
present, there is no that much choice, because we also have to remove
colors too light. We introduced different line styles to take care of this
occurrence, and propose to see what the PRD editors will suggest for it.


Thanks again!
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