Answering Markus

1
Answering Markus
You should plot against particle jet Pt. Its
easier to do Pt of particles collinear with
calorimeter jet. Thats not the same. It will
give the same answer. Prove it.
Not yet a fit
Fraction from udsg
Proven
Parton (true) Pt
Particle (truth) Pt
2
Finding a Pt Dependence
Obviously more statistics would be welcome.
3
Fitting to HF fraction
4
New Answer
Corrected
Not yet corrected
Corrected
Not yet corrected
5
Progress on the 2-Component Mystery
Best Secondary Vertex Positive decay length 2D
decay length lt 2.5 cm Maximum 3D decay length
significance
6
QCD 080-160 (coarse binning)
In bin (0.00 lt Prob lt 0.02) 2500 All 3951 63
are low Probability (Low Prob High c2 Bad)
7
Effect of Probability Cut
Probability c2 (dof 1) c2 (dof 3)
0.1 2.71 6.25
0.01 6.63 11.34
0.001 10.83 16.23
0.0001 15.14 21.11
8
QCD 080-160 (fine binning)
In bin (0.000 lt Prob lt 0.001) 2500 All
3951 50 are low Probability (Low Prob High
c2 Bad)
9
c 080-160 (coarse binning)
In bin (0.00 lt Prob lt 0.02) 2600 All 6458 40
are low Probability (Low Prob High c2 Bad)
10
b 080-160 (coarse binning)
In bin (0.00 lt Prob lt 0.02) 4400 All 7856 56
are low Probability (Low Prob High c2 Bad)
11
Data All Pt Fine Binning
In bin (0.000 lt Prob lt 0.001) 4500 All
10248 44 are low Probability (Low Prob High
c2 Bad)