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PU Peak2 and Multiplicity Cuts. PU peak2 cut: yield versus lumi Timing: L1VeloClusters cut Status of note on L1L0 eff vs mult. cuts. PU peak2 cut: Yield vs Lumi. Marko Zupan and MFL Two errors found on both sides (all fixed now): Both: L1 returns incomplete if L0=false

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Pu peak2 and multiplicity cuts
PU Peak2 and Multiplicity Cuts

  • PU peak2 cut: yield versus lumi

  • Timing: L1VeloClusters cut

  • Status of note on L1L0 eff vs mult. cuts


Pu peak2 cut yield vs lumi
PU peak2 cut: Yield vs Lumi

  • Marko Zupan and MFL

  • Two errors found on both sides (all fixed now):

    • Both: L1 returns incomplete if L0=false

    • MZ: dimuon was never triggering

    • MFL: forgot to recalculate ratio of ncoll>0 / ncoll=0 which depends on luminosity

  • Still waiting for full stats to get better numbers at high luminosity. Currently:

    • MZ: 200k MBIA, 2300 Bs->DsK

    • MFL: 500k MBIA, 2300 Bs->DsK


Yield and effs vs lumi
Yield and Effs. vs Lumi

  • Marko Zupan: solid symbols with dashed curve

  • MFL: open symbols with solid curve

  • Triangles: no pk2 cut

  • Circles: pk2 cut = 3

  • Still some discrepancy left in L1 eff. Due to low stats ? To be understood…


Gain in l1 time and l1veloclusters cut
Gain in L1 time and L1VeloClusters cut

No cut

No cut

L0: No pk2 and multipl. cuts L0: nominal pk2 and multipl. cuts


L1l0 multipl cuts note
L1L0_multipl_cuts note

  • The note is on its way

  • Circulate draft before the week-end


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