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MC fake muon Mar. 12, 2008 Jongseok Lee (Sungkyunkwan University) 1.

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Presentation on theme: "MC fake muon Mar. 12, 2008 Jongseok Lee (Sungkyunkwan University) 1."— Presentation transcript:

1 MC fake muon Mar. 12, 2008 Jongseok Lee (Sungkyunkwan University) 1

2 Fake isolated probe (matched with a glob, Z+0jet, 200k)

3 Mass of fake isolated probe & tag (matched with a glob, Z+0jet, 255k) black:ΔR(mcmu,glob)>0 red:0.01<ΔR(mcmu,glob)<0.02greeen:0.02<ΔR(mcmu,glob)<0.03 blue:0.03<ΔR(mcmu,glob)<0.04 purple:0.04<ΔR(mcmu,glob)<0.05point:ΔR(mcmu,glob)>0.05

4 Pt of matched glob with fake isolated probe (matched with a glob, Z+0jet, 255k) black:ΔR(mcmu,glob)>0 red:0.01<ΔR(mcmu,glob)<0.02greeen:0.02<ΔR(mcmu,glob)<0.03 blue:0.03<ΔR(mcmu,glob)<0.04 purple:0.04<ΔR(mcmu,glob)<0.05point:ΔR(mcmu,glob)>0.05

5 Mass distribution (Z+0jet, 255k) black : MC μ + MC μ red : tag + matched probe with glob

6 MC fake μ (Z+0jet, 255k) no cut |η|<2.4 pt>10 no cut pt>10 nmcmunoz=2 pt>10 nmcmunoz=1

7 Matched global μ with MC μ (Z0jet,10k) black : all matched glob, red : matched with MC truth μ, green : matched with MC fake μ ratio of true globratio of fake glob ratio of true glob ratio of fake glob There is a probe

8 Matched global μ with MC μ (Z0jet,10k) black : all matched glob, red : matched with MC truth μ, green : matched with MC fake μ ratio of true globratio of fake glob There is only one glob

9 # of particles near the MC μ Z+0jet, 255k DrellYan, 41k black : MC truth muon red : MC string muon ΔR=0.05, Pt>0

10 P t of MC μ from string (Z0jet,10k) no cut |η|<2.4

11 # of particles near the MC μ (Z0jet,10k) black : MC truth muon, red : MC fake muon ΔR<1.0 ΔR<0.5ΔR<0.4 ΔR<0.1ΔR<0.2ΔR<0.3


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