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Dear Letterio,</div>
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It is difficult to understand slide #3 as it is shown right now.</div>
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I propose you will provide the following information:</div>
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-which data set(s) from CLAS12 have been analyzed;</div>
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-list the selection criteria for the events shown in the middle plot;</div>
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-explain how you improve the event selection in order to transform the middle plot into the right plot;</div>
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-whether the events displayed in the left plot were selected with the same selection criteria as for the right plot?</div>
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Finally and most important: what is the objective for your analysis of the CLAS12 data?</div>
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Best Regards,</div>
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Victor<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Clas_hadron <clas_hadron-bounces@jlab.org> on behalf of silvia@jlab.org <silvia@jlab.org><br>
<b>Sent:</b> Monday, September 6, 2021 1:07 PM<br>
<b>To:</b> Letterio Biondo <letterio.biondo@unime.it><br>
<b>Cc:</b> Marco Battaglieri <battagli@jlab.org>; Giuseppe Mandaglio <giuseppe.mandaglio@unime.it>; alessandro.pilloni <alessandro.pilloni@skuola.net>; clas_hadron@jlab.org <clas_hadron@jlab.org><br>
<b>Subject:</b> Re: [Clas_hadron] [EXTERNAL] Permission for CLAS12 graphs usage</font>
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<div class="PlainText">Dear Letterio,<br>
I have not understood what the context of the presentation will be. Is it<br>
a conference or just an internal presentation in your group?<br>
In either case, I have some questions about how the plots in slide 3 are<br>
defined.<br>
1) Is there a cut around the pi0 mass on the gammagamma invariant mass<br>
before plotting the middle plot? I am surprised by how small the proton<br>
"bump" is.<br>
2) What are the kinematic selections done to improve the plot that you<br>
mention?<br>
3) Any idea of why the proton peak is shifted from the nominal position?<br>
Are these EC or FT photons (or both)?<br>
4) What is the low-mass peak in the gammagamma invariant mass plot? Have<br>
you applied any minimal-energy cut on the photons?<br>
Thank you very much!<br>
Best regards,<br>
Silvia<br>
<br>
<br>
><br>
> Dear all,<br>
><br>
> I used some graphs from my CLAS12 analysis in a presentation for Annalisa.<br>
> The pictures are preliminar, and this results are not published yet.<br>
> Can i ask you the permission to use them? (Slide 3 in the attached pdf)<br>
><br>
> Cheers,<br>
> Lelio<br>
> _______________________________________________<br>
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