30 GeV, 1 Jet

PDF for other and data from MC (QCD + Z )

Nominal Fit

• signal: double cruijff, first cruijff: all params fixed on data except alpha lefft
• ttbar: cruijff, all fixed on MC
• other: cruijff all params fixed on data, except the left ones

The inial values for and the fits estimates for the PDF parameters for the nominal fit on the 2 jet bin.

root [1] nll_myFit_data->Print("V")                                    

 RooFitResult: minimized FCN value: -117523, estimated distance to minimum: 0.000865873
                covariance matrix quality: Full, accurate covariance matrix

    Constant Parameter    Value     
  --------------------  ------------
              1j_njets    1.0000e+00
          N_ttbar0b_1j    2.9936e+01
          N_ttbar2b_1j    1.0000e-03
         b0_btag_1j_nb    0.0000e+00
      b0_btag_1j_njets    1.0000e+00
         b1_btag_1j_nb    1.0000e+00
      b1_btag_1j_njets    1.0000e+00
         b2_btag_1j_nb    2.0000e+00
      b2_btag_1j_njets    1.0000e+00
               btag_eb    6.3000e-01
             btag_enob    2.9000e-02
    other_Mt_1j_alphaL    1.0000e-01
    other_Mt_1j_sigmaL    2.0000e+01
    other_btag_1j_bin2    1.0000e+00
     sig_Mt_1j_alphaL1    2.4422e-01
     sig_Mt_1j_alphaL2    9.4430e-01
     sig_Mt_1j_alphaR2    2.4958e-08
          sig_Mt_1j_f1    8.1358e-01
       sig_Mt_1j_mean2    5.0526e+01
     sig_Mt_1j_sigmaL2    1.5389e+01
     sig_Mt_1j_sigmaR2    7.9716e+00
   ttbar_Mt_1j_alphaL1    6.4824e-01
   ttbar_Mt_1j_alphaL2    1.0000e-01
   ttbar_Mt_1j_alphaR1    3.3169e-01
   ttbar_Mt_1j_alphaR2    1.0000e-01
        ttbar_Mt_1j_f1    1.0000e+00
     ttbar_Mt_1j_mean1    7.4878e+01
     ttbar_Mt_1j_mean2    4.0000e+01
   ttbar_Mt_1j_sigmaL1    1.4241e+01
   ttbar_Mt_1j_sigmaL2    1.0000e+01
   ttbar_Mt_1j_sigmaR1    9.7092e+00
   ttbar_Mt_1j_sigmaR2    1.0000e+01

    Floating Parameter  InitialValue    FinalValue +/-  Error     GblCorr.
  --------------------  ------------  --------------------------  --------
            N_other_1j    1.5000e+04    6.7041e+03 +/-  3.61e+02  <none>
              N_sig_1j    1.5000e+04    1.8752e+04 +/-  3.64e+02  <none>
          N_ttbar1b_1j    1.5000e+04    1.0401e+02 +/-  4.45e+01  <none>
    other_Mt_1j_alphaR    1.1865e-01    3.4865e-02 +/-  1.05e-01  <none>
      other_Mt_1j_mean    5.2538e-06    1.3256e+01 +/-  5.23e+00  <none>
    other_Mt_1j_sigmaR    1.4534e+01    1.4755e+01 +/-  3.32e+00  <none>
    other_btag_1j_bin1    3.3333e-01    9.1807e-01 +/-  3.88e-03  <none>
     sig_Mt_1j_alphaR1    1.5731e-01    1.4890e-01 +/-  5.23e-03  <none>
       sig_Mt_1j_mean1    7.6238e+01    7.4357e+01 +/-  3.60e-01  <none>
     sig_Mt_1j_sigmaL1    1.1385e+01    1.1253e+01 +/-  5.44e-01  <none>
     sig_Mt_1j_sigmaR1    7.4513e+00    9.6150e+00 +/-  2.62e-01  <none>

Conclusions

• better fix other_MT_1j_aphaR ?
• params come out a bit different than we expect, floating too much (?

-- LukasVanelderen - 06-Feb-2011