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2010.01.13 W test sample QA: Pass 2

Updated on Tue, 2010-01-26 11:28. Originally created by seluzhen on 2010-01-13 18:23.

http://drupal.star.bnl.gov/STAR/node/16704

QA of the test W-sample from Lidia/Jason.
generated MuDst are from /star/simu/jwebb/01-11-2010-w-test-production/

QA plots for the previous pass can be found here

Two channels being analyzed:

  • wtest10000 W+ --> e+ nu (shown by black line)
  • wtest10001 W- --> e- nu (shown by red line)

Cuts: |geant_eta_lepton| < 1

Discussions can be found here:
http://www.star.bnl.gov/HyperNews-star/protected/get/starsimu/440.html

Figure 1: (left) Reconstructed vertex z distribution
(right) reconstructed minus geant z-vertex

Figure 2: E2x2/E_geant energy ratio
Black: positron from W+, mean value= 0.972973;
Red - electron from W- mean value = 0.969773

Figure 3: E1x1/E_geant (highest tower) energy ratio
Black: positron from W+, mean value= 0.815287;
Red - electron from W- mean value = 0.812098

Update on Jan 14, 2010

Figure 4: Lepton E2x2/E_geant energy ratio

Parameter black: positron from W+ red: electron from W-
gaus-Constant 1.60709e+01 , err=3.08565e+00 1.56834e+01 , err=4.71967e+00
gaus-Mean 9.85514e-01 , err=4.94309e-03 9.86118e-01 , err=5.43577e-03
gaus-Sigma 3.15205e-02 , err=3.73952e-03 2.52009e-02 , err=6.57793e-03
Hist-Mean 0.972973 0.969773

Figure 5: Lepton E3x3/E_geant energy ratio

Parameter black: positron from W+ red: electron from W-
gaus-Constant 1.48719e+01 , err=2.82186e+00 1.35741e+01 , err=3.36776e+00
gaus-Mean 9.89924e-01 , err=5.72959e-03 9.83056e-01 , err=6.28736e-03
gaus-Sigma 3.37758e-02 , err=4.24983e-03 3.00597e-02 , err=6.06841e-03
Hist-Mean 0.975662 0.974163

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