1. Some investigations on Shower in Aug11 DST Szymon Harabasz Version: 15 November 2015

2. PID plot 2

3. mass 3

4. Pre – RPC correlations 4

5. All RPC clusters to all Pre hits in event Closest RPC clusters matched with all tracks to all Pre hits in event 5

6. 6 Selct only bottom parts of both detectors Correlation fairly better!

7. All RPC clusters to all Pre hits in event Closest RPC clusters matched with all tracks to all Pre hits in event 7

8. 8

9. cand with different cuts Positive particlesNegative particles 9

10. Positive particlesNegative particles Φ cand with different cuts 10

11. Angular distributions all Particle Candidates Positive particlesNegative particles 11

12. Angular distributions Particle candidates matched with Pre and correlated with Post I Positive particlesNegative particles 12

13. Row-Col for Shower hits best matched with particle candidates Positive particlesNegative particles 13

14. cand vs. Shower hit row Aug 11 Positive particlesNegative particles 14

15. All particlesNegative particles cand vs. Shower hit row Nov 10 Why previously there was no problem to calculate efficiency in bottom rows? 15

16. Sum0 vs. momentum Negative pionsProtons π-π- 16

17. Sum1 vs. momentum Protons π-π- 17

18. Sum2 vs. momentum Protons π-π- 18

19. Sum1-Sum0 vs. Momentum sector 1 Protons π-π- 19

20. Sum2-Sum0 vs. Momentum sector 1 Protons π-π- 20

21. Mean Sum0 - protons 21

22. Mean Sum1 - protons 22

23. Mean Sum2 - protons 23

24. Mean Sum0 – π - 24

25. Mean Sum1 – π - 25

26. Mean Sum2 – π - 26

27. Shower alignment not perfect? 27

28. Shower alignment not perfect? 28

29. Digitization 29

30. Eff Pre ( β ) All particles Negative particles 30

31. Eff Post I ( β ) All particles Negative particles 31

32. Eff Pre ( position ) Negative particles All particles 32

33. Eff Post I ( position ) Negative particles All particles 33

34. HParticleTrackSorter - how does it work? Fill internal structures from HParticleCand by calling Int_t HParticleTrackSorter::fill(Bool_t (*function)(HParticleCand* )) (eg. Bool_t HParticleTrackSorter::selectHadrons(HParticle Cand* pcand) ) For accepted objects flags are evaluated Int_t selectBest(HParticleTrackSorter::ESwitch byQuality, Int_t byParticle) sets isBest... flags (here also kIsUsed is marked) 34

35. Looking for leptons 35

36. First attempt Read data from all HparticleCands, write it to ntuple, apply conditions when drawing histograms with Draw method Meta matching quality < 4 Average charge > 70 Inner segment chi2 > 0 RK chi2 < 1000 Graphical cut: 36

37. 37

38. 38

39. System 0, p < 150 MeV/c System 1, 200 < p < 300 MeV/c 39

40. Next attempts Second: The same conditions as in the first attempt plus kIsUsed flag Third: The same conditions as in the first attempt plus flags: kIsAcceptedHitRICHMDC kIsAcceptedHitInnerMDC kIsAcceptedHitOuterMDC kIsAcceptedRKMETA 40

41. ∆ θ RICH – Track, System 0 All histograms in one figure scaled to (almost) common maximum value 41

42. ∆ θ RICH – Track, System 1 42 All histograms in one figure scaled to (almost) common maximum value

43. Second attempt Third attempt 43

44. 44

45. 45

46. Fourth attempt 46 Read data from all HparticleCands, write it to ntuple, apply conditions when drawing histograms with Draw method Meta matching quality < 4 Average charge > 70 Inner segment chi2 > 0 RK chi2 < 1000 β > 0.9

47. 47 Fourth attempt

48. 48 Fourth attempt – positive particles

49. 49 Fourth attempt – negative particles

50. 50 Fourth attempt Scaled to common max value (on both plots separately)

51. 51 Fourth attempt Scaled to common max value (on both plots separately)

52. Shower response on leptons? 52

53. 53 Fourth attempt

54. Shower response on leptons 54

55. Sideband method 55

56. Sideband method 56

57. Sideband method 57

58. Sideband method 58

59. Sideband method 59 Everything After sideband background subtraction

60. Sideband method 60 Everything After sideband background subtraction

61. Sideband method 61 Everything After sideband background subtraction

62. Sideband method 62 Everything After sideband background subtraction Oops…

63. Sideband method 63 Everything After sideband background subtraction

64. Sideband method 64 Everything After sideband background subtraction

65. Sideband method 65 Everything After sideband background subtraction Something is wrong in some sumdiff bins. Let’s check it.

66. 66

67. 67

68. 68

69. 69

70. Sideband method in sumdiff bins 70

71. Sideband method in sumdiff bins 71

72. Sideband method in sumdiff bins 72

73. Sideband method in sumdiff bins 73

74. Sideband method in sumdiff bins 74

75. Sideband method in sumdiff bins 75

76. Time of flight 76 Everything After sideband background subtraction

77. Backup slides 77

78. Sum0, Sum2 > 0 78

79. Post I efficiency 79

80. Sum0, Sum1, Sum2 > 0 80

81. Sum0, Sum1 > 0 and RPC cluster exists 81

82. Sum1 > 0 and RPC cluster exists 82

83. Pre efficiency Sum0 is always > 0 83

84. Shower Hit Row-Col – cands matched with Pre and correlated with Post I All particlesNegative particles 84

85. Theta for all and negative particle candidates All particlesNegative particles Here all tracks matched with Shower are considered 85

86. Phi for all and negative particle cands Here tracks matched with Shower and RPC at the same time are considered 86

87. Sum0 & Sum1 vs. beta Protons π-π- 87

88. Shower alignment not perfect? Pre to Track matching quality as a function of a position on the detector 88