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Principle of lepton isolation

Jet. lepton. Jet. lepton. BackGround. Heavy flavor decay. Principle of lepton isolation. Isolation cut Count activity around lepton Lepton distance from Jet axis. Also Isolation cut will work Drell-Yan and W event. Counting method. Charm. Bottom. QCD.

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Principle of lepton isolation

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  1. Jet lepton Jet lepton BackGround Heavy flavor decay Principle of lepton isolation • Isolation cut • Count activity around lepton • Lepton distance from Jet axis Also Isolation cut will work Drell-Yan and W event. Atsushi Taketani, RIKEN Nov. 2000 PHENIX Core Week

  2. Counting method Charm Bottom QCD • Count charged track around the lepton • Compare with QCD, Open Bottom/Charm #Track in R<0.4, No Cut on Pt Atsushi Taketani, RIKEN Nov. 2000 PHENIX Core Week

  3. Atsushi Taketani, RIKEN Nov. 2000 PHENIX Core Week

  4. Open Bottom R<0.4 R<0.7 R<1.0 Pt>50MeV Pt>100MeV Pt>150MeV Pt>200MeV Pt>0MeV Atsushi Taketani, RIKEN Nov. 2000 PHENIX Core Week

  5. Open QCD R<0.4 R<0.7 R<1.0 Pt>50MeV Pt>100MeV Pt>150MeV Pt>200MeV Pt>0MeV Atsushi Taketani, RIKEN Nov. 2000 PHENIX Core Week

  6. Summary • Charged Track counting may not work great. • Need to use Jet axis information. Atsushi Taketani, RIKEN Nov. 2000 PHENIX Core Week

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