Nominal fit and systematics

Nominal fit and systematics Kenji Hamano

Last modified : Aug 02, 2007 Back to Home Back to privious page

New Nominal Fit with B->D Gaussian + polynomial apploximation
Fix D(*) BF, no Gaussian constraint on f+0
Fit result, MINOS
Toy MC pull : Some are 2-3 sigma off
Other pull plots : chi2, FF, BF, Bkg
Plots : Lepton momentum (fitted binning)
       D momentum (fitted binning)
       cosBY (fitted binning)
       Bin by bin (D0)
       Bin by bin (D+)

Different D* FF parms (slope=1.145, R1=1.417, R2=0.836)
Toy MC pull
Other pull plots : chi2, FF, BF, Bkg

Different BF parms (Dlnu=0.0215, D*lnu=0.065, Other=0.0214)
Toy MC pull
Other pull plots : chi2, FF, BF, Bkg

Use ISGW2 fo B->Dlnu : Fit result,
Fix rhoD2=1.17 : Fit result,
Fix R1=1.417, R2=0.836 : Fit result,
Fix rho=1.145, R1=1.417, R2=0.836 : Fit result,
No isospin constraints : Fit result,
No isospin constraints, Gaussian constraint on f_+0 : Fit result,
      Toy MC pull
      Other pull plots : chi2, FF, BF, Bkg
      Plots : Lepton momentum (fitted binning)
             D momentum (fitted binning)
             cosBY (fitted binning)
             Bin by bin (D0)
             Bin by bin (D+)
No isospin constraints, Fix f_+0=1.037: Fit result,
      Toy MC pull
      Other pull plots : chi2, FF, BF, Bkg
      Plots : Lepton momentum (fitted binning)
             D momentum (fitted binning)
             cosBY (fitted binning)
             Bin by bin (D0)
             Bin by bin (D+)
No isospin constraints, Fix rho=1.145, R1=1.417, R2=0.836 : Fit result,
No isospin constraints, Fix rhoD2=1.17 : Fit result,

All bkgd = 0.80 : Fit result,
      Plots : Lepton momentum (fitted binning)
             D momentum (fitted binning)
             cosBY (fitted binning)
             Bin by bin (D0)
             Bin by bin (D+)

New Nominal Fit with B->D polynomial apploximation
Fix D(*) BF, no Gaussian constraint on f+0
Fit result, MINOS
Toy MC pull : Some are 2-3 sigma off
Other pull plots : FF, BF, Bkg
Plots : Lepton momentum (fitted binning)
       D momentum (fitted binning)
       cosBY (fitted binning)
       Bin by bin (D0)
       Bin by bin (D+)

Fix rho=1.145, R1=1.417, R2=0.836 : Fit result,
No isospin constraints : Fit result, Toy MC pull
No isospin constraints, Fix rho=1.145, R1=1.417, R2=0.836 : Fit result,

New Nominal Fit with B->D binned weight
Fix D(*) BF, no Gaussian constraint on f+0
Fit result,

Fix rho=1.145, R1=1.417, R2=0.836 : Fit result,
No isospin constraints : Fit result,
No isospin constraints, Fix rho=1.145, R1=1.417, R2=0.836 : Fit result,

p_Lep^LAB > 1.2 GeV
Fit result,
Plots : Lepton momentum (fitted binning)
       D momentum (fitted binning)
       cosBY (fitted binning)
       Bin by bin (D0)
       Bin by bin (D+)

Electron only
Fit result

Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)

Muon only
Fit result

Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)

D0 only
Fit result

Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)

D+ only
Fit result

Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)

Effect of Vertex Cuts
Looser B vertex cut : P>0.001
   Fit result
Looser B vertex cut : P>0.001, and looser D vertex cut : P>0.0001
   Fit result
Tighter D vertex cut : P>0.01
   Fit result

Effect of Binning
Nominal binning
p_lep : 8 bins (0.8, 1.05, 1.3, 1.55, 1.8, 2.05, 2.3, 2.55, 2.8)
p_D : 5 bins (0, 0.5, 1, 1.5, 2.0, 2.5)
cosBY : 5 bins (-20, -5.5, -2, 0, 2, 10)

p_lep binning
p_lep = 10 bins (0.8, 1, 1.2, 1.4, 1.6, 1.8, 2, 2.2, 2.4, 2.6, 2.8)
   Fit result
p_lep = 5 bins (0.8, 1.2, 1.6, 2, 2.4, 2.8)
   Fit result
p_lep = 4 bins, (0.8, 1.3, 1.8, 2.3, 2.8)
   Fit result
p_D binning
p_D = 10 bins (0, 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.25, 2.5)
   Fit result
p_D = 4 bins (0, 0.6, 1.2, 1.8, 2.4)
   Fit result
cosBY binning
cosBY = 6 bins (-20, -6, -2.5, -0.5, 0.5, 2, 10)
   Fit result
cosBY = 5 bins (-20, -4, -1.5, 0, 1.5, 10)
   Fit result
cosBY = 4 bins (-20, -3, -0.5, 1.5, 10)
   Fit result

Effect of minimum candidates per bin
Minimum cnadidates = 5
Fit result
Minimum cnadidates = 20
Fit result

Systematic Fits
Inclusive B->D systematic error plots
All
Other pull plots : chi2, FF, f_+0, BF, F(1)Vcb

Plots

BToDlnu skim (before event selection)
Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)

After Event selection
Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)

After TrkEff PID correction
Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)

After background BF reweighting
Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)

After background BF + D(*,**) decay BF reweighting + cosBY correction
Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)

Before fit
Plots :
    Lepton momentum (fitted binning)
    D momentum (fitted binning)
    cosBY (fitted binning)
    Bin by bin (D0)
    Bin by bin (D+)