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Patch HFT efficiency study

Patch HFT efficiency study. in 1 year from now!. Slide from Flemming@CD23 3 PXL sectors will be installed : Which geometry is the most efficient for track pointing and physics measurement ?. D0 decay. Hhigh Pt D0 : small opening angle btw daughters. Low Pt D0 : large opening

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Patch HFT efficiency study

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  1. Patch HFT efficiency study HFT patch acceptance

  2. in 1 year from now! • Slide from Flemming@CD23 • 3 PXL sectors will be installed : • Which geometry is the most efficient for track pointing and physics measurement ? HFT patch acceptance

  3. D0 decay Hhigh Pt D0 : small opening angle btw daughters Low Pt D0 : large opening angle btw daughters kaon kaon pion pion HFT patch acceptance

  4. 1 sector covers 36° • 2 configurations studied : mercedes-shape and pie-shape =108 =72 1 =144 =36 1 2 3 =180 =0 3 2 =324 =216 =288 =252 HFT patch acceptance

  5. simulation • Generate 20k D0 with : • Flat Pt in [0,5], |y|<1,|Vz|<10 • Use only fz file --> no reconstruction, etc … • Count : • N0 : # of D0 after P>.8 for both daughters and |eta|<1 • N1 : # of D0 with above cuts + TPC>10,PXL=2 • N2 : # of D0 in mercedes-shape • N3: # of D0 in pie-shape • Then : • Effmercedes = n2 /n1 • Effpie = n3/n1 HFT patch acceptance

  6. Raw counts HFT patch acceptance

  7. Efficiencies HFT patch acceptance

  8. Back-up HFT patch acceptance

  9. Check trk1 vs.trk2 HFT patch acceptance

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