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dE/dx Simulation

dE/dx Simulation. Marjan Ćirković Belgrade SHINE team. NA49/NA61 Software/Analysis/Collaboration meeting Warsaw, 13.02.2014. Idea of research. We want to use the same programs for analysis for real and MC data

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dE/dx Simulation

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  1. dE/dx Simulation Marjan Ćirković Belgrade SHINE team NA49/NA61 Software/Analysis/Collaboration meeting Warsaw, 13.02.2014

  2. Idea of research • We want to use the same programs for analysis for real and MC data • dE/dx is used for particle identification, having simulated dE/dx data could improve these analyses • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 1

  3. Bethe-Bloch formula • Bethe-Bloch formula (dE/dx in function of momentum): • After parameterization: • Where: • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 2

  4. dE/dx_momentum positive particles (fitting protons) • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 3

  5. dE/dx_momentumall particles (fitting pions) • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 4

  6. dE/dxReal data - protons • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 5

  7. Real data, Hans BB &Belgrade fit for protons • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 6

  8. σ(dE/dx) for protons • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 7

  9. Real data, Hans BB &Belgrade fit for pions • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 8

  10. σ(dE/dx) for pions • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 9

  11. dE/dx Hans cut dE/dx Belgrade cut • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 10

  12. Real data for K0dE/dx cut included Hans BB Belgrade BB • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 11

  13. Thank you! • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 12

  14. Fitting functions Protons: Pions: if p 1.5 GeV/c • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 13

  15. Fitting functions if p > 1.5 GeV/c if p 12 GeV/c • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 14

  16. Fitting functions if p > 12 GeV/c • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 15

  17. dE/dx_momentumpositive particles (fitting protons) • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 16

  18. dE/dx_momentumall particles (fitting pions) • Warsaw, 13.02.2014 Marjan Ćirković, Belgrade SHINE team Page 17

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