<div dir="ltr">Hello, <div> These pi0 are constructed with energy for each photon to be greater than 800 MeV. </div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Aug 27, 2013 at 3:00 PM, Stepan Stepanyan <<a href="mailto:stepanya@jlab.org">stepanya@jlab.org</a>> wrote:<br>
<blockquote class="gmail_quote">Raphael,<br>
<br>
Thanks for explanations. We will have a meeting this coming Thursday.<br>
<br>
By the way, I sue to think that pi0 mass peak with for IC was 7 MeV,<br>
why are we getting 11 MeV?<font color="#888888"><br>
<br>
Stepan</font><div class="HOEnZb"><div class="h5"><br>
<br>
On 8/27/13 8:56 AM, Dupré Raphaël wrote:<br>
<blockquote class="gmail_quote">
Dear Stepan,<br>
<br>
Mohammad has comparisons for missing energy and other variables too,<br>
he can show them in a future meeting. In particular, the RMS for<br>
missing energy was reduced for incoherent (I did not see coherent). We<br>
chose to illustrate with the pi0 mass peak since it is simpler to<br>
interpret, we do not expect contamination effects and it depends only<br>
on photon kinematic and energy.<br>
<br>
Best,<br>
<br>
On Tue, Aug 27, 2013 at 2:46 PM, Stepan Stepanyan<<a href="mailto:stepanya@jlab.org">stepanya@jlab.org</a>> wrote:<br>
<blockquote class="gmail_quote">
Hello Mohammad,<br>
<br>
My first thoughts will be it does not matter what corrections you will use.<br>
Just keep in mind that getting a narrower pi0 peak is not the ultimate goal.<br>
The goal is to get energy and angles of photons measured correctly, since<br>
that is what will end up in your calculations of kinematics for DVCS.<br>
<br>
Regards, Stepan<br>
<br>
<br>
On 8/26/13 12:07 PM, Mohammad Hattawy wrote:<br>
<blockquote class="gmail_quote">
Dear all,<br>
Following the work of IC calibration. Firstly, i corrected the energy<br>
and the time dependence separately which can be found in the link<br>
(<a href="https://clasweb.jlab.org/rungroups/lowq/wiki/index.php/User:Hattawy/IC_calibration">https://clasweb.jlab.org/<u></u>rungroups/lowq/wiki/index.php/<u></u>User:Hattawy/IC_calibration</a><br>
). A new Method of correcting both at the same time is done and can be found<br>
in the link<br>
(<a href="https://clasweb.jlab.org/rungroups/lowq/wiki/index.php/IC_calibration">https://clasweb.jlab.org/<u></u>rungroups/lowq/wiki/index.php/<u></u>IC_calibration</a>).<br>
As a result, from the side of the number of DVCS events, both methods<br>
gave almost the same numbers, while a gain of 0.4 MeV in the width of the<br>
reconstructed signal of pi0 has been achieved with the second method.<br>
Suggestions and comments are welcome.<br>
<br>
<br>
--<br>
Best regards,<br>
Mohammad Hattawy.<br>
</blockquote></blockquote>
<br>
<br>
</blockquote>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br>Best regards,<br>Mohammad Hattawy.<br>
</div>