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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_01.png

  • fig_02.eps: Resolution vs sum of transverse energies after pile-up suppression

  • Resolution vs sum of transverse energies after pile-up suppression:
    fig_02.png

  • mean Et vs PtZ:
    fig_03.png
Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formateps fig_01.eps r1 manage 15.6 K 2012-06-29 - 12:00 TancrediCarli resolution vs Npv before and after pile-up suppression
PNGpng fig_01.png r1 manage 20.8 K 2012-06-29 - 12:00 TancrediCarli resolution vs Npv before and after pile-up suppression
Unknown file formateps fig_02.eps r1 manage 14.4 K 2012-06-29 - 12:01 TancrediCarli Resolution vs sum of transverse energies after pile-up suppression
PNGpng fig_02.png r1 manage 23.8 K 2012-06-29 - 12:02 TancrediCarli Resolution vs sum of transverse energies after pile-up suppression
Unknown file formateps fig_03.eps r1 manage 18.2 K 2012-06-29 - 12:03 TancrediCarli mean Et vs PtZ
PNGpng fig_03.png r1 manage 21.6 K 2012-06-29 - 12:03 TancrediCarli mean Et vs PtZ
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Topic revision: r1 - 2012-06-29 - TancrediCarli
 
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