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MC vs Data comparison

This analysis investigates the vertex reconstruction efficiency of Monte Carlo (MC) simulations and real data from LHC Run 104867. We focus on TPC clusters and track parameters, specifically examining how DCA, cluster chi-squared, and track momentum affect vertex resolution. Multiple cuts, including those for cluster number and momentum, are applied to ensure quality comparisons between datasets. The study aims to identify systematic differences in resolution metrics across various configurations and parameters, enhancing the understanding of detector performance.

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MC vs Data comparison

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  1. MC vs Data comparison • Data (LHC09d - pass4) • MC (LHC10a8)

  2. SPD vertex resolution - MC run 104867

  3. Vertex reconstuction MC Data run 104867

  4. nb. TPC clusters / track MC Data run 104867 |dcar| < 3 cm |dcaz| < 3 cm chi2 / clust < 4 pt > 0.15 GeV/c |eta| < 0.8 |eta| < 0.8

  5. chi2 / cluster MC Data run 104867 |dcar| < 3 cm |dcaz| < 3 cm nClust > 70 pt > 0.15 GeV/c |eta| < 0.8 |eta| < 0.8 |eta| < 0.8

  6. pt vs eta vs phi map MC Data run 104867 |dcar| < 3 cm |dcaz| < 3 cm chi2 / clust < 4 nClust > 70 pt > 0.15 GeV/c |eta| < 0.8 |eta| < 0.8 |eta| < 0.8

  7. DCA – Aside MC data run 104867 nClust > 70 chi2 < 4 pt > 0.15 GeV/c

  8. DCA – Cside MC data run 104867 nClust > 70 chi2 < 4 pt > 0.15 GeV/c

  9. nClusters, chi2 (DCA cuts + pt > 0.15 GeV/c) TPC – A side (eta <0.8) chi2< 4 nClust > 70 MC data TPC – A side (phi 3 - 4.5 (rad) excluded)

  10. nClusters, chi2 (DCA cuts + pt > 1.0 GeV/c) TPC – A side (eta <0.8) chi2< 4 nClust > 70 MC data TPC – A side (phi 3 - 4.5 (rad) excluded)

  11. nClust – cut systematics (all cuts applied, pt > 0.15 GeV) TPC – A side (phi 3 - 4.5 (rad) excluded) TPC – A side MC data

  12. nClust – cut systematics (all cuts applied, pt > 1.0 GeV) TPC – A side (phi 3 - 4.5 (rad) excluded) TPC – A side MC data

  13. chi2 – cut systematics (all cuts applied, pt > 0.15 GeV) TPC – A side (phi 3 - 4.5 (rad) excluded) TPC – A side MC data

  14. chi2 – cut systematics (all cuts applied, pt > 1.0 GeV) TPC – A side (phi 3 - 4.5 (rad) excluded) TPC – A side MC data

  15. eta – loose cuts applied data MC >70 clust >80 clust >90 clust

  16. pt – loose cuts applied TPC – A side data MC TPC – A side (phi 3 - 4.5 (rad) excluded) >70 clust >80 clust >90 clust

  17. common track - pass4 Silvia Y p

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