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<div class="moz-cite-prefix">It is great to see that Anna now has
the analysis tools to isolate the physics channel in simulated
events. <br>
</div>
<div class="moz-cite-prefix">Just one comment on the last slide. I
shows MM(epX) with a peak at MM =pi0 mass, but Anna should first
show MM(epgX) with a peak at MM = 0. <br>
</div>
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<div class="moz-cite-prefix">A next step could be to include
particle identification in the simulation and reconstruction.
There are many protons in the CD where particle ID is limited to
the lower momentum range and a high momentum proton may be
misidentified as a K+ or a pi+ and is lost for the reaction in
question. <br>
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<div class="moz-cite-prefix"><br>
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<div class="moz-cite-prefix">Volker</div>
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<div class="moz-cite-prefix">On 4/30/20 6:50 AM, Viktor Mokeev
wrote:<br>
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<blockquote type="cite"
cite="mid:BL0PR0901MB3122038FF39964650C456DA3B4AA0@BL0PR0901MB3122.namprd09.prod.outlook.com">
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Dear Colleagues,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Please find very interesting results from Anna. I decided to
send them in advance because of huge amount of really needed
slides. She advanced her analysis essentially by implementing
the presentation framework similar to the developed by FX. The
outcome I see:</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
-momentum dependent cuts for isolation of pi^0p events are
needed;</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
-analysis of the kinematics correlations in the ep---->e'p'
gamma gamma reaction allow us to develop the set of cuts useful
for isolation of pi^0p events in real measurements with the
contribution from pi^0p and other open channels, and apparatus
background;</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
-event selection (in toy world with pi^0p channel only) in
ep--->e'p' \gamma+X<br>
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<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
reaction increase the statistic more then factor of 10 in
comparison with more exclusive ep--->e'p'\gamma\gamma +X
selection. The problem Anna simulation is not able to address
is the real background beneath exclusive peak in real world
with all open exclusive channels. <br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Best Regards,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Victor<br>
</div>
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>From:</b> Анна
Голубенко <a class="moz-txt-link-rfc2396E" href="mailto:3977412@gmail.com"><3977412@gmail.com></a><br>
<b>Sent:</b> Thursday, April 30, 2020 2:00 AM<br>
<b>To:</b> Viktor Mokeev <a class="moz-txt-link-rfc2396E" href="mailto:mokeev@jlab.org"><mokeev@jlab.org></a><br>
<b>Subject:</b> [EXTERNAL] rgk</font>
<div> </div>
</div>
<div>
<div dir="ltr">Виктор Иванович,
<div><br>
</div>
<div>я попробовала повторить презентацию FX (несколько я все
же не поняла).</div>
<div>Но получилось как-то.... много. Понимаю, что
рассказывать все равно буду по сути, и на всем
останавливаться совсем не нужно. Ну, в общем, посмотрите,
мы тоже можем делать презентации с множеством графиков</div>
<div><br>
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<div>А. </div>
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