old mc set summary monte carlo set comparisonnuclear.ucdavis.edu/~bhaag/newpage/supporting... ·...
TRANSCRIPT
![Page 1: Old MC set summary Monte Carlo set comparisonnuclear.ucdavis.edu/~bhaag/NewPage/supporting... · (XnXn) minbias w/ interference 6.8 fm topology w/o interference 7.55 fm topology w](https://reader035.vdocument.in/reader035/viewer/2022070708/5eb6f584dfa675115470975e/html5/thumbnails/1.jpg)
New MC set summary
MC set RNuc
(XnXn) UPC minbias
with and without interference
6.8 fm
UPC topology with and without
interference
8.0 fm
MC set RNuc
(XnXn) minbias w/o interference
6.35 fm
(XnXn) minbias w/ interference
6.8 fm
topology w/o interference
7.55 fm
topology w/ interference
8.0 fm
Old MC set summary
• 400k events generated for each set inSTARlight
• Radius adjusted for matching exponentialslope of t-spectrum
• Fully reconstructed (raw output run throughsame processes as data to account fordetector effects)
•‘Old’ MC Set - radius matched toexponential slope for both MC sets (with andwithout interference)
•‘New’ MC Set - same radius for both sets
Monte Carlo setcomparison
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• 400k events generated for MinBias(XnXn) MC set in STARlight
• Radius adjusted for matchingexponential slope of t-spectrum
• fit function = Ae-k*t
• data k = 302 GeV-1
• MC k = 296 GeV -1
• fit range: 0.004 < t < 0.01
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• 400k events generated for topology(0n0n) MC set in STARlight
• Radius adjusted for matchingexponential slope of t-spectrum
• fit function = Ae-k*t
• data k = 373 GeV-1
• MC k = 371 GeV -1
• fit range: 0.004 < t < 0.01
![Page 4: Old MC set summary Monte Carlo set comparisonnuclear.ucdavis.edu/~bhaag/NewPage/supporting... · (XnXn) minbias w/ interference 6.8 fm topology w/o interference 7.55 fm topology w](https://reader035.vdocument.in/reader035/viewer/2022070708/5eb6f584dfa675115470975e/html5/thumbnails/4.jpg)
Explanation of plots:
1) Ratio of GEANT correctedMonte Carlo (STARlight)interference t-spectrum(t~pT
2) to no-interference t-spectrum
2) Ratio of uncorrectedSTARlight interference t-spectrum to no-interferencet-spectrum
3) Efficiency curves calculatedfor interference and no-interference scenarios (ratioof MC t-spectrum runthrough GEANT to t-spectrum not run throughGEANT)
4) MC interference histogram(blue), MC no-interferencehistogram (green),uncorrected data (redpoints), overallparameterization (red curve)
5) uncorrected data (redpoints), overallparameterization (red curve)
1 2
3 4
5
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UPC MinBias(with nuclear excitation) or UPC topology(withoutnuclear excitation) = trigger dataset
Explanation of statistics:
(1) p0 - p6, fit parameters for 6thorder polynomial fit to ratio
(2) Same as 1
(4 &5)
p0 - p2 come from overall fit:
p0 = A
p1 = c
p2 = k
1 2
3 4
5
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old UPC MinBias 0.1 < y < 0.5
new UPC MinBias 0.0 < y < 0.5
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old UPC MinBias 0.1 < y < 0.5
new UPC MinBias 0.0 < y < 0.5
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old UPC MinBias 0.5 < y < 1.0
new UPC MinBias 0.5 < y < 1.0
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old UPC MinBias 0.5 < y < 1.0
new UPC MinBias 0.5 < y < 1.0
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old UPC Topology 0.1 < y < 0.5
new UPC Topology 0.1 < y < 0.5
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old UPC Topology 0.1 < y < 0.5
new UPC Topology 0.1 < y < 0.5
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old UPC Topology 0.5 < y < 1.0
new UPC Topology 0.5 < y < 1.0
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old UPC Topology 0.5 < y < 1.0
new UPC Topology 0.5 < y < 1.0
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MC set Summary
80/47
86/47
77/47
77/47
χ2/dof
88/47
84/47
79/47
46/47
χ2/dof
0.97±0.201.1±0.210.5 < y < 1.0
0.80±0.11
0.93±0.11
1.01±0.09
cold
Topology
0.93±0.110.5 < y < 1.0
0.86±0.110.1 < y < 0.5
0.95±0.080.1 < y < 0.5
cnew
Minbias