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Dear All,</div>
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After discussion with Francois and simple analytical evaluation of the resolution over x_B, I cancel my proposal.</div>
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I agree with FX that we just observe the resolution over x_B for the elastic peak.</div>
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Only observation I have is: due to unknown reason, in the selected fake pi^+pi^-p events at W around 1.0 GeV we have from substantial to dominant amount of true elastic electron scattering events and on top of them one additional hadron which should not belong
to elastic event.</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> Viktor Mokeev <mokeev@jlab.org><br>
<b>Sent:</b> Friday, October 25, 2019 7:26 PM<br>
<b>To:</b> Francois-Xavier Girod-Gard <fxgirod@jlab.org>; clas12_rgk@jlab.org <clas12_rgk@jlab.org>; hybrid baryons <hybrid_baryons@jlab.org><br>
<b>Subject:</b> Re: [clas12_rgk] Evgeny's puzzle</font>
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Dear All,</div>
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I propose to remove the events with x_B>1.</div>
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Best Regards,</div>
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Victor<br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> clas12_rgk <clas12_rgk-bounces@jlab.org> on behalf of Francois-Xavier Girod <fxgirod@jlab.org><br>
<b>Sent:</b> Friday, October 25, 2019 6:26 PM<br>
<b>To:</b> clas12_rgk@jlab.org <clas12_rgk@jlab.org>; hybrid baryons <hybrid_baryons@jlab.org><br>
<b>Subject:</b> [clas12_rgk] Evgeny's puzzle</font>
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<div dir="ltr">Dear all
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<div>I took a look at Evgeny's events and uploaded some information on the docDB</div>
<div><a href="https://clas12-docdb.jlab.org/cgi-bin/DocDB/private/ShowDocument?docid=502">https://clas12-docdb.jlab.org/cgi-bin/DocDB/private/ShowDocument?docid=502</a><br>
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<div>I was not able to produce CED pictures because the input DSTs from the trains do not have detector banks</div>
<div>However I think we can still see three kinds of events</div>
<div>(1) CVT "ghost" tracks around polar angle = 90 degrees (5% of events)</div>
<div>(2) CVT duplicate tracks correlated with the proton (22.5% of events)</div>
<div>(3) accidental tracks (72.5% of events)</div>
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<div>Some samples of 1k events from each category are available under</div>
/work/clas12/fxgirod/Evgeny/</div>
<div dir="ltr">In principle we can filter these events from decoded files, reconstruct them specifically and look at them on CED <br>
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<div>Please let me know if you have questions of suggestions</div>
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<div>Best regards</div>
<div>FX</div>
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