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Etmiss performance under high pile conditions in 2012 data
[Etmiss resolution vs Npv]
Resolution of x and y missing ET components as a function of the number of primary vertices
before and after pile-up suppression for data and MC in events with Z bosons produced without
jets above 20 GeV in pT. The pile-up suppression is based on the ratio of the sum pT of the
tracks associated to the primary vertex and all tracks not associated to reconstructed objects.
The vertices are reconstructed with tighter requirements on the number of hits on the tracks
than in the 2011 reconstruction.
eps file
gif file
| |
[Etmiss resolution vs SumET]
Resolution of x and y missing ET components as a function of the scalar sum of transverse
energies of all the calorimeter energy depositions and muons(SumET) before and after pile-up
suppression for data and MC.
The SumET on the abscissa is not corrected for pile-up suppression.
eps file
gif file
| |
[Mean Etmiss resolution PtZ ]
Mean value of the projection of EtMiss onto the transverse direction of the Z boson as a
function of the transverse momentum of the Z boson before and after pile-up suppression for data and MC.
The mean value of the projection of EtMiss onto the longitudinal axis is a measure of the EtMiss scale
and this axis is sensitive to the balance between the leptons and the hadronic recoil.
eps file
gif file
| |
Major updates:
-- TancrediCarli - 29-Jun-2012
Responsible: TancrediCarli
Subject: public
- fig_01.eps: resolution vs Npv before and after pile-up suppression
- resolution vs Npv before and after pile-up suppression:
- fig_02.eps: Resolution vs sum of transverse energies after pile-up suppression
- Resolution vs sum of transverse energies after pile-up suppression:
- mean Et vs PtZ:
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