Quality Control


  • dEdx Comparisons

    • These are dedx vs P graphs. All of them show reasonable agreement with data.(Done on May 2002)

    Dedx-dedxPiPlus.gif
    Dedx-dedxKMinus.gif
    Dedx-dedxProton.gif
     Pi Minus
    		 K Minus
    		Proton 
     Dedx-dedxPiMinus.gif
     Dedx-dedxKPlus.gif
    Dedx-dedxPbar.gif
     Pi Plus
    		 K Plus
    		 P Bar
  • Dca Distributions

    • PI PLUS.  In the following dca distributions some discrepancy is shown.  Due to secondaries?
     Dca-PiPlusDca_100pt200.gif
    Dca-PiPlusDca_200pt300.gif
    Dca-PiPlusDca_300pt400.gif
     Peripheral 0.1 GeV/c < pT < 0.2 Gev/c
    		 MinBias 0.2 GeV/c < pT < 0.3 Gev/c
    		 Central 0.3 GeV/c <pT <  0.4 GeV/c


    PI MINUS. Some discrepancy is shown.  Due to secondaries?
     Dca-PiMinusDca_100pt200.gif
     Dca-PiMinusDca_200pt300.gif
    Dca-PiMinusDca_300pt400.gif
      Peripheral 0.1 GeV/c < pT < 0.2 Gev/c   MinBias 0.2 GeV/c < pT < 0.3 Gev/c   Central 0.3 GeV/c <pT <  0.4 GeV/c

    K PLUS.  In the following dca distributions Good agreement with data is shown.
     Dca-KPlusDca_100pt200.gif
    Dca-KPlusDca_200pt300.gif
    Dca-KPlusDca_300pt400.gif
     Peripheral 0.1 GeV/c < pT < 0.2 Gev/c
    		 MinBias 0.2 GeV/c < pT < 0.3 Gev/c
    		 Central 0.3 GeV/c <pT <  0.4 GeV/c

    K MINUS. In the following dca distributions Good agreement with data is shown.

     Dca-KMinusDca_100pt200.gif
     Dca-KMinusDca_200pt300.gif
    Dca-KMinusDca_300pt400.gif
      Peripheral 0.1 GeV/c < pT < 0.2 Gev/c   MinBias 0.2 GeV/c < pT < 0.3 Gev/c   Central 0.3 GeV/c <pT <  0.4 GeV/c
    PROTON. The real data Dca distribution is wider, especially at low pT -> Most likely due to secondary tracks in the sample. A tail from background protons dominating distribution at low pt can be clearly seen. Expected deviation from the primary MC tracks.
     Dca-ProtonDca_200pt300.gif
     Dca-ProtonDca_500pt600.gif
    Dca-ProtonDca_700pt800.gif
      Peripheral 0.2 GeV/c < pT < 0.3 Gev/c   MinBias 0.5 GeV/c < pT < 0.6 Gev/c   Central 0.7 GeV/c <pT <  0.8 GeV/c
    Pbar. The real data Dca distribution is wider, especially at low pT -> Most likely due to secondary tracks in the sample.

     Dca-PbarDca_200pt300.gif
     Dca-PbarDca_300pt400.gif
    Dca-PbarDca_500pt600.gif
      Peripheral 0.2 GeV/c < pT < 0.3 Gev/c   MinBias 0.3 eV/c < pT < 0.4 Gev/c   Central   0.5 GeV/c <pT <  0.6 GeV/c
  • Number of Fitted Points

    •
    PI PLUS.  Good agreement with data is shown.
    NFit-PiPlusNfit_100pt200.gif
    NFit-PiPlusNfit_200pt300.gif
    NFit-PiPlusNfit_300pt400.gif
     Peripheral 0.1 GeV/c < pT < 0.2 Gev/c
    		 MinBias 0.2 GeV/c < pT < 0.3 Gev/c
    		 Central 0.3 GeV/c <pT <  0.4 GeV/c
    PI MINUS.  Good agreement with data is shown.

    NFit-PiMinusNfit_100pt200.gif
    NFit-PiMinusNfit_200pt300.gif
    NFit-PiMinusNfit_300pt400.gif
     Peripheral 0.1 GeV/c < pT < 0.2 Gev/c  Peripheral 0.2 GeV/c < pT < 0.3 Gev/c  Peripheral 0.3 GeV/c < pT < 0.4 Gev/c

    K PLUS.  Good agreement with data is shown.
    NFit-KPlusNfit_100pt200.gif
    NFit-KPlusNfit_200pt300.gif
    NFit-KPlusNfit_300pt400.gif
     Peripheral 0.1 GeV/c < pT < 0.2 Gev/c
    		 MinBias 0.2 GeV/c < pT < 0.3 Gev/c
    		 Central 0.3 GeV/c <pT <  0.4 GeV/c

    K MINUS.  Good agreement with data is shown.
    NFit-KMinusNfit_100pt200.gif
    NFit-KMinusNfit_200pt300.gif
    NFit-KMinusNfit_300pt400.gif
     Peripheral 0.1 GeV/c < pT < 0.2 Gev/c  Peripheral 0.2 GeV/c < pT < 0.3 Gev/c  Peripheral 0.3 GeV/c < pT < 0.4 Gev/c

    PROTON.  Good agreement with data is shown.
    NFit-ProtonNfit_200pt300.gif
    NFit-ProtonNfit_300pt400.gif
    NFit-ProtonNfit_500pt600.gif
     Peripheral 0.2 GeV/c < pT < 0.3 Gev/c  Peripheral 0.3 GeV/c < pT < 0.4 Gev/c Peripheral 0.5 GeV/c < pT < 0.6 Gev/c

    Pbar.  Good agreement with data is shown.
    NFit-PbarNfit_200pt300.gif
    NFit-PbarNfit_300pt400.gif
    NFit-PbarNfit_500pt600.gif
     Peripheral 0.2 GeV/c < pT < 0.3 Gev/c  Peripheral 0.3 GeV/c < pT < 0.4 Gev/c Peripheral 0.5 GeV/c < pT < 0.6 Gev/c