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Is it different from what Joseph is showing?</div>
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I mean the BH events/ J/psi events ratio.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Richard Tyson (PGR) <r.tyson.1@research.gla.ac.uk><br>
<b>Sent:</b> Wednesday, June 29, 2022 12:11<br>
<b>To:</b> Valery Kubarovsky <vpk@jlab.org>; Rafayel Paremuzyan <rafopar@jlab.org>; Nathan Baltzell <baltzell@jlab.org><br>
<b>Cc:</b> clas12_dileptons@jlab.org <clas12_dileptons@jlab.org><br>
<b>Subject:</b> [EXTERNAL] Re: [Clas12_dileptons] HTCC and track sector studies</font>
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Hi Valery, <br>
<br>
No sorry for the confusion, I use two different ML algorithms. One does PID for e+ so just distinguishing between e+/pi+, the other selects J/psi events from e+ e- p. The second one suppresses BH events, but the first one doesn't.<br>
<br>
In my slides I was showing momentum after applying the first e+ PID ML algorithm. The point was that just as Stepan was showing, the single sector cut doesn't make much difference once you apply more restrictions on PID. The corresponding e+ e- invariant mass
plot is copied underneath, as you can see BH is not suppressed (and there's good agreement with fall2018).<br>
<br>
Thanks,<br>
Richard<br>
<br>
<img class="x_w-982 x_h-877" size="69211" style="max-width:100%" data-outlook-trace="F:2|T:2" src="cid:6b16a051-21c6-47b2-8452-d9d86d8350a3"><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> Valery Kubarovsky <vpk@jlab.org><br>
<b>Sent:</b> 29 June 2022 16:51<br>
<b>To:</b> Richard Tyson (PGR) <r.tyson.1@research.gla.ac.uk>; Rafayel Paremuzyan <rafopar@jlab.org>; Nathan Baltzell <baltzell@jlab.org><br>
<b>Cc:</b> clas12_dileptons@jlab.org <clas12_dileptons@jlab.org><br>
<b>Subject:</b> Re: [Clas12_dileptons] HTCC and track sector studies</font>
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Richard,</div>
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I think that you suppress the real BH events when you apply your ML selection cut.</div>
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I am not sure that you can recover this in your MC program. But we need BH events to calibrate the luminosity fo the experiment. It is not what we want actually. </div>
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Am I right?</div>
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Thanks,</div>
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valery</div>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Richard Tyson (PGR) <r.tyson.1@research.gla.ac.uk><br>
<b>Sent:</b> Wednesday, June 29, 2022 09:14<br>
<b>To:</b> Rafayel Paremuzyan <rafopar@jlab.org>; Nathan Baltzell <baltzell@jlab.org>; Valery Kubarovsky <vpk@jlab.org><br>
<b>Cc:</b> clas12_dileptons@jlab.org <clas12_dileptons@jlab.org><br>
<b>Subject:</b> [EXTERNAL] Re: [Clas12_dileptons] HTCC and track sector studies</font>
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Hi All,<br>
<br>
Sorry for not uploading my slides. I've attached a slightly modified copy to reflect the comments at the meeting. My cuts are shown on the first page, this time I explicitly require the invariant mass between 2 and 2.8 GeV. One thing I changed for these slides
was to check the impact with some extra pid requirements. Instead of using the triangular cuts I used this ML based classifier to ID e+ (same as what Pierre did for his thesis).
<br>
<br>
Anyways, it seems like, just as in Stepan's slides which have extra PID for e+, requiring only one sector in each of HTCC/DC/PCAL/ECIN doesn't make a big change once we have more PID requirements for e+.
<br>
<br>
Hope this helps,<br>
Richard<br>
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<div id="x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Clas12_dileptons <clas12_dileptons-bounces@jlab.org> on behalf of Rafayel Paremuzyan <rafopar@jlab.org><br>
<b>Sent:</b> 29 June 2022 13:57<br>
<b>To:</b> Nathan Baltzell <baltzell@jlab.org>; Valery Kubarovsky <vpk@jlab.org><br>
<b>Cc:</b> clas12_dileptons@jlab.org <clas12_dileptons@jlab.org><br>
<b>Subject:</b> Re: [Clas12_dileptons] HTCC and track sector studies</font>
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Thanks, yes </div>
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then I was wrong assuming requesting PCal sector instead of track sector might change anything.</div>
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Rafo</div>
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<div id="x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Nathan Baltzell <baltzell@jlab.org><br>
<b>Sent:</b> Wednesday, June 29, 2022 8:55 AM<br>
<b>To:</b> Valery Kubarovsky <vpk@jlab.org><br>
<b>Cc:</b> Rafayel Paremuzyan <rafopar@jlab.org>; clas12_dileptons@jlab.org <clas12_dileptons@jlab.org><br>
<b>Subject:</b> Re: [Clas12_dileptons] HTCC and track sector studies</font>
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<div class="" style="word-wrap:break-word; line-break:after-white-space">Valery,
<div class=""><br class="">
</div>
<div class="">Yes, all detectors except HTCC already have an explicit same-sector requirement with the track, so adding it for (1) HTCC-track or (2) HTCC-PCAL should be 100% identical.
<div class=""><br class="">
</div>
<div class="">-Nathan<br class="">
<div><br class="">
<blockquote type="cite" class="">
<div class="">On Jun 29, 2022, at 8:44 AM, Valery Kubarovsky <<a href="mailto:vpk@jlab.org" class="">vpk@jlab.org</a>> wrote:</div>
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Nathan,</div>
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This story started with the trigger validation.</div>
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When we select events with PID=-11we found a lot of events when HTCC signal was not in the same sector as PCAL/ECAL.</div>
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Valery</div>
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<font face="Calibri, sans-serif" class="" style="font-size:11pt"><b class="">From:</b><span class="x_x_x_x_x_Apple-converted-space"> </span>Clas12_dileptons <<a href="mailto:clas12_dileptons-bounces@jlab.org" class="">clas12_dileptons-bounces@jlab.org</a>>
on behalf of Nathan Baltzell <<a href="mailto:baltzell@jlab.org" class="">baltzell@jlab.org</a>><br class="">
<b class="">Sent:</b><span class="x_x_x_x_x_Apple-converted-space"> </span>Wednesday, June 29, 2022 08:02<br class="">
<b class="">To:</b><span class="x_x_x_x_x_Apple-converted-space"> </span>Rafayel Paremuzyan <<a href="mailto:rafopar@jlab.org" class="">rafopar@jlab.org</a>><br class="">
<b class="">Cc:</b><span class="x_x_x_x_x_Apple-converted-space"> </span><a href="mailto:clas12_dileptons@jlab.org" class="">clas12_dileptons@jlab.org</a> <<a href="mailto:clas12_dileptons@jlab.org" class="">clas12_dileptons@jlab.org</a>><br class="">
<b class="">Subject:</b><span class="x_x_x_x_x_Apple-converted-space"> </span>Re: [Clas12_dileptons] HTCC and track sector studies</font>
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you require <span class="" style="font-size:12pt">sector of the track to be the same as the sector of HTCC,</span></div>
<div class="" style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt">
while for trigger studies we required sector of HTCC to be the same as the sector of PCal</div>
</blockquote>
<div class=""><br class="">
</div>
Those should give exactly the same result, since truly sectored detectors are already required to be in the same sector as the track.
<div class=""><br class="">
</div>
<div class="">
<div class="">
<div class="">-Nathan</div>
<div class=""><br class="">
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="">On Jun 28, 2022, at 10:36 PM, Rafayel Paremuzyan <<a href="mailto:rafopar@jlab.org" class="">rafopar@jlab.org</a>> wrote:</div>
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Hello Stapan,</div>
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thank you for slides.</div>
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To me pid cuts are pretty reasonable.</div>
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I assume exclusivity cuts are |MM2| < 0.1 GeV^2 AND Q2 < 0.1 GeV^2</div>
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when Richard will post his slides, <span class="" style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt">we can have a look into his cut values.</span></div>
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However one thing that I think is different is that you require</div>
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sector of the track to be the same as the sector of HTCC,</div>
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while for trigger studies we required sector of HTCC to be the same as the sector of PCal and EC_in (nothing</div>
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required on track sector).</div>
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I am not sure how much difference this will make (if any), but if it is not too much of work, could</div>
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you require PCal and HTCC sectors to be the same, instead of track and HTCC sectors.</div>
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Rafo</div>
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p.s. also could you make the comparison plot in a linear scale.</div>
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<font face="Calibri, sans-serif" class="" style="font-size:11pt"><b class="">From:</b><span class="x_x_x_x_x_x_Apple-converted-space"> </span>Clas12_dileptons <<a href="mailto:clas12_dileptons-bounces@jlab.org" class="">clas12_dileptons-bounces@jlab.org</a>>
on behalf of Stepan Stepanyan <<a href="mailto:stepanya@jlab.org" class="">stepanya@jlab.org</a>><br class="">
<b class="">Sent:</b><span class="x_x_x_x_x_x_Apple-converted-space"> </span>Tuesday, June 28, 2022 3:33 PM<br class="">
<b class="">To:</b><span class="x_x_x_x_x_x_Apple-converted-space"> </span><a href="mailto:clas12_dileptons@jlab.org" class="">clas12_dileptons@jlab.org</a><span class="x_x_x_x_x_Apple-converted-space"> </span><<a href="mailto:clas12_dileptons@jlab.org" class="">clas12_dileptons@jlab.org</a>><br class="">
<b class="">Subject:</b><span class="x_x_x_x_x_x_Apple-converted-space"> </span>[Clas12_dileptons] HTCC and track sector studies</font>
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Hello all,</div>
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<span class="" style="background-color:rgb(255,255,255); display:inline!important">Attached are a few slides I put together to study the HTCC-track sector mismatch. Yes, there are positrons with odd sector combinations, especially for p<4.8 GeV. But in the
end, it makes no difference for my invariant mass distribution.</span></div>
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<span class="" style="background-color:rgb(255,255,255); display:inline!important">Stepan</span></div>
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<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">_______________________________________________</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">Clas12_dileptons
mailing list</span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important"><a href="mailto:Clas12_dileptons@jlab.org" class="">Clas12_dileptons@jlab.org</a></span><br class="" style="font-family:Helvetica; font-size:12px; font-style:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
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