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Cuts breakdown : outline

Cuts breakdown : outline. Use file with open cuts and apply cut values from the third production. Done for : All pairs True D 0 pairs Crossfeed pairs Cuts are applied in the same order than those executed in MuKpi. List of cuts.

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Cuts breakdown : outline

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  1. Cuts breakdown : outline • Use file with open cuts and apply cut values from the third production. • Done for : • All pairs • True D0 pairs • Crossfeed pairs • Cuts are applied in the same order than those executed in MuKpi.

  2. List of cuts This cut translates than the logic for the radius of first hit • TString vertexcut = " abs(Vz)<10 "; • TString tpccutF = " && (TpcKaonF>25) && (TpcPionF>25)"; • TString tpccut = " && (TpcKaonF/TpcKaonP)>.51 && (TpcPionF/TpcPionP)>.51"; • TString etacut = " && abs(etaPion)<1.2 && (etaKaon)<1.2"; • TString sicut = " && (SsdPion+SvtPion)>1 && (SsdKaon+SvtKaon)>1" ; • TString boolT = " && boolPion==1 && boolKaon==1"; • TString nsigmacut = " && TMath::Abs(ndEdxPion)<2.5 && TMath::Abs(ndEdxKaon)<2.5"; • TString dcacut = " && abs(dcaXYPion)<.2 && abs(dcaXYKaon)<.2"; • TString pcut = " && (PPion+PKaon)>1.5"; • TString cosinecut = " && abs(thetaGJ)<.8"; • TString yD0 = " && abs(RapD0)<1"; • TString slengthD0 = " && abs(slength)<.2"; • TString dslengthD0 = " && dslength<.1"; • TString probD0 = " && probability>=.05";

  3. All pairs

  4. All pairs after vertex cut After ratio After track eta After tpcF After silicon cut Aftert Sum momentum After logic cut Cosine(theta*) slength probability After ndEdx After single Dca dslength rapidity

  5. comments • Cut 2 (tpc hits fitted) removed a lot but we see that the next cut (ratio fitted/poss) does not remove a lot, so it’s OK because we have to apply the cut ratio fitted/poss • The major part of entries removal is done by : • Silicon hits • Logic of first hit radius • nsigma of dEdx • The other cuts are negligible, except maybe the probability cut.

  6. Listing of # of entries • h0 --> # : 20863 • h1 --> # : 20019 • h2 --> # : 16768 • h3 --> # : 16768 • h4 --> # : 16768 • h5 --> # : 12837 • h6 --> # : 9111 • h7 --> # : 5538 • h8 --> # : 5536 • h9 --> # : 5536 • h10 --> # : 4927 • h11 --> # : 4927 • h12 --> # : 4927 • h13 --> # : 4927 • h14 --> # : 3941 After zvertex cut After probability cut

  7. D0 pairs The cut of the sign is applied here

  8. Crossfeed pairs The cut of the sign is applied here ndEdx cut removes a lot of crossfeed pirs

  9. h0 --> # : 20863 h1 --> # : 10041 h2 --> # : 8411 h3 --> # : 8411 h4 --> # : 8411 h5 --> # : 6440 h6 --> # : 4572 h7 --> # : 3531 h8 --> # : 3529 h9 --> # : 3529 h10 --> # : 2981 h11 --> # : 2981 h12 --> # : 2981 h13 --> # : 2981 h14 --> # : 2378 h0 --> # : 20863 h1 --> # : 9967 h2 --> # : 8351 h3 --> # : 8351 h4 --> # : 8351 h5 --> # : 6397 h6 --> # : 4539 h7 --> # : 2007 h8 --> # : 2007 h9 --> # : 2007 h10 --> # : 1946 h11 --> # : 1946 h12 --> # : 1946 h13 --> # : 1946 h14 --> # : 1563 Listing for true D0 (left) and crossfeed pairs(right)

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