Plots on Pixel Phase I Upgrade

Efficiency
HLT Pixel Tracking efficiency as a function of eta (left) and transverse momentum (right) for 1000 ttbar simulated events for the Phase-I detector with superimposed pileup collisions of 50, for three different algorithms. The Cellular Automaton and the Triplet Propagation algorithms are compared to the pixel tracking running at HLT during 2016. The ratio between the 2016 HLT Pixel Tracking and Triplet Propagation tracking efficiencies with respect to the Cellular Automaton tracking efficiency is also shown. Only simulated tracks with pT > 0.4 GeV are selected. No cut in transverse momentum of the reconstructed tracks was used to plot the fake rate as a function of eta. The inefficiency in the interval 1.0 < abs(eta) < 1.5 is due to the non hermetic four-hits coverage transitioning from the barrel to the forward region. The asymmetry of the distribution in eta is due to the realistic position of the beamspot, slightly displaced with respect to the origin. [Get pdf version]
[Get pdf version]
Contact: Felice Pantaleo
img622a89e9c950a2d8db3d2b3e3083c56e.png
img04b167713d6cac8bb2c74924455e8805.png

Fake rate
Fraction of reconstructed tracks that are not matched to simulated charged tracks as a function of eta (left) and transverse momentum (right) for 1000 ttbar simulated events for the Phase-I detector with superimposed pileup collisions of 50, for three different algorithms. The Cellular Automaton and the Triplet Propagation algorithms are compared to the pixel tracking running at HLT during 2016. The ratio between the 2016 HLT Pixel Tracking and Triplet Propagation tracking efficiencies with respect to the Cellular Automaton tracking efficiency is also shown. Only simulated tracks with pT > 0.4 GeV are selected. No cut in transverse momentum of the reconstructed tracks was used to plot the fake rate as a function of eta. The asymmetry of the distribution in eta is due to the realistic position of the beamspot, slightly displaced with respect to the origin. The CA fake-rate is lower than Triplet Propagation by up to 40% and by two order of magnitudes with respect to 2016 Pixel Tracks. [Get pdf version]
[Get pdf version]
Contact: Felice Pantaleo
imga65560eeb4fafdbd3b95bfdb17547087.png
img9532a281f67a3439b8510a60c818c481.png

-- ElisabettaGallo - 2017-03-09

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf efficPt_hltPixel.pdf r1 manage 27.0 K 2017-03-09 - 18:38 ElisabettaGallo  
PNGpng efficPt_hltPixel.png r1 manage 261.5 K 2017-03-09 - 18:43 ElisabettaGallo  
PDFpdf effic_hltPixel.pdf r1 manage 33.7 K 2017-03-09 - 18:38 ElisabettaGallo  
PNGpng effic_hltPixel.png r1 manage 212.1 K 2017-03-09 - 18:43 ElisabettaGallo  
PDFpdf fakeratePt_hltPixel.pdf r1 manage 25.3 K 2017-03-09 - 18:38 ElisabettaGallo  
PNGpng fakeratePt_hltPixel.png r1 manage 261.2 K 2017-03-09 - 18:43 ElisabettaGallo  
PDFpdf fakerate_hltPixel.pdf r1 manage 30.9 K 2017-03-09 - 18:38 ElisabettaGallo  
PNGpng fakerate_hltPixel.png r1 manage 216.4 K 2017-03-09 - 18:43 ElisabettaGallo  
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Topic revision: r1 - 2017-03-09 - ElisabettaGallo
 
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