Validation of the Gen6 Monte Carlo and TF, ID94 mass (4/16/07,
updated Nov/20/07)
 
PYTHIA is now the main MC for the mass analysis. We need to compare it
with HERWIG to assess if we need to change our model. I compare Gen5
and Gen6 MC first, then compare HERWIG with PYTHIA. I also look at
TF's dependence on ID94 mass and deta(ID94parton-jet).

 Dependencies of Pjet/E(parton) (4-16-06), updated (4-18-07, 11/20/07) 
Some plots to validate the Gen6 transfer functions, TF's, in the effective
propagator analysis. Only events that pass IGV match with chisq<200
are included. These plots are for the q jets from the W. Jet corrected at L5. 

List of plots shown.
page 1 (light quarks from W, profile distributions):
Top-left: profile distr. of pjet/Eparton(ID=94 level)-vs-M(ID94).
Top-right: pjet/Eparton dependence on deta (parton-jet).
Bottom-left: sigma(pjet/Eparton) dependence on ID=94 mass of the parton.
Bottom-right: pjet/Eparton dependence on the PT of the parton.

page 2 (quarks from W decay, profile distributions):
Top-left: deta (jet-parton)-vs-mass of parton (ID=94 level).
Top-right: pjet/Eparton-vs-eta of the parton.
Bottom-left: abs value of deta-vs-ID=94 mass of the parton.
Bottom-right: sigma(pjet/Eparton) dependence on the PT of the parton.

page 3 (2D and 1-D distributions): 
Top-left: distribution of pjet/Eparton(ID=94 level)-vs-M(ID94). First MC
Top-right: distribution of pjet/Eparton(ID=94 level)-vs-M(ID94). Second MC
Bottom-left: HEPG Pt(ttbar)
Bottom-right: HEPG PT(top)

page 4 (1-D distributions):
Top-left: light quark jet PT
Top-right: b quark jet PT
Bottom-left: Pjet/Eparton(ID=94 level)
Bottom-right: HEPG PT(top)

page 5 (1-D distributions):
Top-left: ID94 mass for light quark (matching done by IGV code) 
Top-right: ID94 mass for b quark (IGV match chis2<200)
Bottom-left: W mass(jet-jet) (IGV match events chis2<200)
Bottom-right: top mass for (IGV match events chis2<200)

 Compare Gen5-Gen6 HERWIG, AND PYTHIA Gen5-Gen6  
 HERWIG 175 Gen5-Gen6 comparison  
 PYTHIA 175 Gen5-Gen6 comparison 

Bottom line: after fixing Si's code (in PYTHIA) to take into account
the multiple interactions mixed in with the partons at ID=94 level,
PYTHIA Gen5 and GEN6 agree. Also HERWIG Gen5 and Gen6 agree.

 Compare HERWIG with PYTHIA  
Comparison between HERWIG and PYTHIA  done for GEN5 and GEN6.

 Comparison of HERWIG-175 gen6 with PYTHIA-175 Gen6
If we compare the 175 GeV MC with 178 Gev one we see that Pj/Ep does
not depend on the top mass.

 Comparison of HERWIG-175 Gen6 with PYTHIA-178 Gen5

Conclusions from these plots:
1. Gen5 and Gen6 MC are the same for PYTHIA and HERWIG 
2. PYTHIA and HERWIG for Mtop=175 are VERY SIMILILAR
  2a.  Dependences of Tf's on ID94 mass, deta(parton-jet) and
       PT(light parton) at ID94 level are the same.
  2b. Both show the same correlation between the deta and the ID94 mass
      (left bottom plot on page 2, the larger the mass, the larger the
      deta).
  2c. The major difference between HERWIG and PYTHIA is the PT(ttbar).
  2d. There is also a disturbing plot of Pj/Eparton-vs-eta. It shows
      dips at eta=2.,1.,and 0. for both MCs.