<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear Daniel,<div class="">thanks for your clarification! </div><div class=""><br class=""></div><div class="">Bests and happy holidays</div><div class=""><br class=""></div><div class="">Andrea<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Dec 25, 2018, at 23:21, Daniel Lersch <<a href="mailto:dlersch@jlab.org" class="">dlersch@jlab.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear Michael, dear Andrea,<div class=""><br class=""></div><div class="">Michaels memory is partly correct. The phi-dependent momentum-corrections should be used for the G12 data even though the kinematic fitter is applied. We ran various tests which showed that the fitter can handle these corrections to some extend only. </div><div class=""><br class=""></div><div class="">Moreover, the kinematic fitter has been tuned for the g12 data, including the momentum corrections.</div><div class=""><br class=""></div><div class="">BUT the momentum corrections are not applied in MC. I know, it sounds obvious, but I just wanted to mention it. So in summary:</div><div class=""><br class=""></div><div class="">g12-Data: phi-dependent momentum + kin. fit</div><div class=""><br class=""></div><div class="">MC: kin. fit</div><div class=""><br class=""></div><div class="">I hope this helps.</div><div class=""><br class=""></div><div class="">Best regards, merry Christmas and happy holidays,</div><div class=""><br class=""></div><div class="">Daniel<br class=""><div class=""><br class=""><blockquote type="cite" class=""><div class="">Am 21.12.2018 um 13:11 schrieb Michael C. Kunkel <<a href="mailto:mkunkel@jlab.org" class="">mkunkel@jlab.org</a>>:</div><br class="Apple-interchange-newline"><div class="">
<div text="#000000" bgcolor="#FFFFFF" class=""><p class="">Greetings Andrea, <br class="">
</p><p class="">Line 339 <br class="">
//event.g12Pcor(); //Momentum corrections....<br class="">
Would invoke the CLASEvent version of momentum correction, which
were never verified or used by anyone in G12.<br class="">
We have a separate package for momentum corrections, which is
basically a correction in phi. <br class="">
However, if memory serves me correct, these corrections should not
be used if using the Fitter, because the fitter handles the phi
correction. <br class="">
<br class="">
Maybe Daniel can remind us if my memory on this subject is faulty.<br class="">
</p>
<pre class="moz-signature" cols="72">BR
MK
----------------------------------------
Michael C. Kunkel, PhD
Forschungszentrum Jülich
Nuclear Physics Institute and Juelich Center for Hadron Physics
Experimental Hadron Structure (IKP-1)
<a class="moz-txt-link-abbreviated" href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.fz-2Djuelich.de_ikp&d=DwMFaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=VfjGbpV3arN3E9BjfYzJSA&m=v97LVmnWTPd87i9r-RflKraf57ZIu7nw_da6OGaGaJ4&s=jd92btY-CELZ0NnrE8jud66nbZzgH8xLp21ld9WGoWo&e=">www.fz-juelich.de/ikp</a></pre>
<div class="moz-cite-prefix">On 12/21/18 12:27 PM, Andrea Celentano
wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:710A8E63-EA46-48C4-8CEB-CCD62E88A350@ge.infn.it" class="">
Hi MK,
<div class="">reading on github your code for efficiency
evaluation, I see the line responsible for momentum corrections
is commented out (line 339 in <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_mckunkel_G12-5FCorrections_blob_master_Efficiency_EfficiencyCodes_BOSSkimCodes_PROT-5FEFF_Ppp-5FcE.cc&d=DwMCAg&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=JP4ECb6XWhhBOHoMsinS6A&m=r4TaHKz96dUdSHMnDyphvJK-8EHn2FsEz6P2Ft7OV0I&s=WtSUh6pGSjBxJkGN48PRMr_k_J27iqb8ErKwL_gTQbA&e=" class="" moz-do-not-send="true">https://github.com/mckunkel/G12_Corrections/blob/master/Efficiency/EfficiencyCodes/BOSSkimCodes/PROT_EFF/Ppp_cE.cc</a> for
example). </div>
<div class="">Is this because you were performing tests on this?
Or am I missing something?</div>
<div class=""><br class="">
</div>
<div class="">Thanks,</div>
<div class="">Bests,</div>
<div class="">Andrea</div>
</blockquote>
<br class="">
</div>
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