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Greetings,<br>
<br>
<br>
On page <br>
<a class="moz-txt-link-freetext" href="https://clasweb.jlab.org/rungroups/g7/wiki/index.php/Reconstruction_study#Monday_March_25.2C_2013">https://clasweb.jlab.org/rungroups/g7/wiki/index.php/Reconstruction_study#Monday_March_25.2C_2013</a><br>
I have the plots of the vert2 function in comparison to the MVRT<br>
<br>
<br>
BR<br>
MK<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 3/25/13 10:48 AM, Dennis Weygand
wrote:<br>
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<blockquote cite="mid:D5B49F1E-FE9C-4ACF-8E90-758F60722744@jlab.org"
type="cite">
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did vert2 tomography show anything?
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<div>On Mar 24, 2013, at 9:39 PM, Michael C. Kunkel wrote:</div>
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<div bgcolor="#FFFFFF" text="#000000"> Greetings,<br>
<br>
It occurred to us that I should plot this with the same
lepton momenta range. (0-1.5 GeV)<br>
The plot is attached.<br>
<br>
BR<br>
MK<br>
<br>
<br>
<div class="moz-cite-prefix">On 3/24/13 7:42 PM, Michael
C. Kunkel wrote:<br>
</div>
<blockquote cite="mid:514F8F49.2040704@jlab.org"
type="cite">Greetings, <br>
<br>
I am still analyzing my vertex calculations, I have
nothing final yet to show. <br>
<br>
But I did have a question about the hypothesis that the
events outside of the target are conversions. <br>
<br>
If I were to have a different topology in which I could
have a pi0 in the final state decay to e+e-gamma, then
these events would also show the same ratio of events
outside of the target, correct? <br>
<br>
If so, then I can look at the gamma p -> P Pip Pim
Pi0 (e+e-gamma) MVRT and see what fraction of events
occur outside of the target, because according to the
conversion hypothesis, 2 charged tracks should be
outside of the target and the other 3 should be inside,
so I would see a shifted distribution of the same. <br>
<br>
The fact is when I look at the vertex position for gamma
p -> P Pip Pim Pi0 (e+e-gamma, over 90% of my events
are inside of the target. <br>
<br>
I have attached the plot showing the comparison. Both
plots are normalized. <br>
So I again ask how can the events from gamma p -> p
pi0 have tracks outside of the target? Conversion? <br>
<br>
<br>
BR <br>
MK <br>
<br>
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<span><compare_vertices_PPipPimEpEmGamvs_PEpEmGam_samemomenta.jpg></span>_______________________________________________<br>
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<div>Dennis Weygand</div>
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href="mailto:weygand@jlab.org">weygand@jlab.org</a></div>
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