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PV reconstruction : Homogenizing Allen and Moore PV finders. Change of rho cut and Kalman Filter covariance matrix initialisation

Bogdan Kutsenko requested to merge bokutsen_VeloKalmanFilter_init into master
  • Rho cut (Maximum distance squared of vertex to beam line) is changed from 0.3f to 0.09f. The distribution on 2024 MC sample is attached
  • Kalman Filter covariance matrix initialization is changed. Here are two motivations for that:
  1. To match the initialisation in REC : Rec!3464 (merged)
  2. New initialisation shows slightly better performance in PV efficiencies than the current default based on 2024 MC sample :
Default covariance matrix initialisation Velo::Tracking::param_w_inverted , 0.f, 0.01f Velo::Tracking::param_w_inverted, 0.f, 0.01f Initialize the covariance matrix with 100.0f, 0.f, 0.01f, 100.0f, 0.f, 0.01f
Efficiencies, % False PVs, % Efficiencies, % False PVs, %
all 93.91 +- 0.03 1.94 +- 0.02 94.06 +- 0.03 1.68 +- 0.02
isolated 97.48 +- 0.05 1.06 +- 0.04 97.63 +- 0.05 0.95 +- 0.04
close 89.92 +- 0.05 2.99 +- 0.04 90.08 +- 0.05 2.56 +- 0.04
ntracks<10 67.98 +- 0.23 21.35 +- 0.22 68.74 +- 0.23 18.89 +- 0.23
ntracks>=10 96.82 +- 0.03 0.00 +- 0.02 96.90 +- 0.03 0.00 +- 0.02
z<=-50.0 95.02 +- 0.13 1.72 +- 0.10 95.20 +- 0.13 1.34 +- 0.10
z in (-50.0,50.0) 92.76 +- 0.04 2.02 +- 0.03 92.92 +- 0.04 1.88 +- 0.03
z>=-50.0 96.08 +- 0.13 1.96 +- 0.09 96.17 +- 0.13 1.50 +- 0.09
decayBeauty 98.51 +- 2.10 1.83 +- 0.61 98.51 +- 2.10 2.65 +- 0.66
decayCharm 98.22 +- 0.19 1.47 +- 0.12 98.36 +- 0.19 1.12 +- 0.12
decayStrange 94.10 +- 0.03 1.65 +- 0.02 94.25 +- 0.03 1.47 +- 0.02
other 52.17 +- 4.90 13.64 +- 0.92 52.17 +- 4.90 11.34 +- 1.04
1MCPV 99.70 +- 0.14 1.39 +- 0.10 99.80 +- 0.14 1.09 +- 0.10
2MCPV 98.16 +- 0.14 1.24 +- 0.10 98.16 +- 0.14 1.03 +- 0.10
3MCPV 95.74 +- 0.15 2.12 +- 0.11 95.74 +- 0.15 1.57 +- 0.11
4MCPV 93.63 +- 0.17 1.47 +- 0.13 93.89 +- 0.17 1.73 +- 0.13
5MCPV 92.62 +- 0.22 2.08 +- 0.17 92.79 +- 0.22 1.74 +- 0.17
Edited by Bogdan Kutsenko

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