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Hello Everyone,
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<div class="">I fixed the bug in my program. I was not reassigning the masses in my 4 Vectors after switching from REC to RECFT banks. Here’s my lambda using the RECFT bank! Looks “good” to me! Of course the electron momentum is off and you can see that in
my missing mass plot.</div>
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<div class="">-Will</div>
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William B. Phelps, Ph.D.<br class="">
Assistant Professor and Staff Scientist <br class="">
Christopher Newport University and Jefferson Lab<br class="">
Newport News, VA, 23606<br class="">
CNU: 757-594-8741<br class="">
JLab: 757-269-5032<br class="">
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<div class="">On Apr 12, 2020, at 4:27 PM, William Phelps <<a href="mailto:wphelps@jlab.org" class="">wphelps@jlab.org</a>> wrote:</div>
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<div class="">Hello Strangers,</div>
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I repeated this experiment with Skim 11 (electron in FT, kaon selected using the RECFT bank). I did not change any of my previous cuts, I simply switched to using the RECFT bank and required the electron to be detected in the forward tagger. You can see the
Lambda in the invariant mass plot but not in the missing mass plot. I will use Geraint’s parametrization of the electron momentum correction and see what happens.
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<div class="">Note: This is with some subset of the 93 runs. ~20-40 runs? It’s still downloading and is ~1TB so it will take a little while.<br class="">
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<div class="">-Will</div>
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<div class="">--------------------------------------------------<br class="">
William B. Phelps, Ph.D.<br class="">
Assistant Professor and Staff Scientist <br class="">
Christopher Newport University and Jefferson Lab<br class="">
Newport News, VA, 23606<br class="">
CNU: 757-594-8741<br class="">
JLab: 757-269-5032<br class="">
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<div class="">On Apr 7, 2020, at 8:15 PM, William Phelps <<a href="mailto:wphelps@jlab.org" class="">wphelps@jlab.org</a>> wrote:</div>
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<div class="">Hello Strangers,</div>
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<div class="">As promised I will send you my cuts/event selection for the plots I have been showing:</div>
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<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">Data: Skim14 (Electron in FD, k+ anywhere)</div>
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<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">Event selection:</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">1 e^- in FD</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">1 pi^- anywhere</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">1 k+ anywhere</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">1 proton anywhere</div>
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<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">Cuts:</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">k+ momentum < 2.0 GeV</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">Missing Mass^2 off of reconstructed particles (4 tracks) < 0.05 GeV^2</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">New** = Missing Momentum < 0.1 GeV</div>
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Assumption: e^- beam energy set to 10.614 for MM calculations (I should look into this…).</div>
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Sorry Eugene, you’ll have to wait for the suggested plots until after I finish writing this midterm!</div>
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<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">-Will</div>
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<div class="">--------------------------------------------------<br class="">
William B. Phelps, Ph.D.<br class="">
Assistant Professor and Staff Scientist <br class="">
Christopher Newport University and Jefferson Lab<br class="">
Newport News, VA, 23606<br class="">
CNU: 757-594-8741<br class="">
JLab: 757-269-5032<br class="">
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