Charged pion-track efficiency with the D* method using Run2 Legacy data


Results have been published in the detector performance note CMS-DP-2022-012

Abstract

In this note the tracking efficiency measurement results for charged pions are shown for Run2 legacy data (2016-2018) on ZeroBias datasets.

The charged pion relative efficiency is measured with an indirect method described in the note.

Results

deltaM_2b_data_FULL_CMSStyle.pngdeltaM_4b_data_FULL_CMSStyle.png

ΔM=M(D*)-M^(D0) distributions for Kpi (left) and K3pi (right) for the full run2 Legacy data.

The fitted shapes in blue well describe data point for both signal (solid) and background (dashed).

efficiency_2016_preAPV.pngefficiency_2016_postAPV.png

The ratio of tracking relative efficiencies for charged pions, as a function of the minimum D* candidates pT threshold, is shown in three different pseudorapidity regions: barrel (blue squares), transition (green triangles) and endcap (red circles) for 2016 data.

The 2016 data taking is splitted in two periods: old APV settings and new APV settings.

Old APV settings: pre-amplifier of the APV25 readout chip is saturated (20 fb-1 of 2016 data).

New APV settings: APV setting changed for fast recovery (16 fb-1 of 2016 data)

efficiency_2017.png The ratio of tracking relative efficiencies for charged pions, as a function of the minimum D* candidates pT threshold, is shown in three different pseudorapidity regions: barrel (blue squares), transition (green triangles) and endcap (red circles) for 2017 data.
efficiency_2018.png The ratio of tracking relative efficiencies for charged pions, as a function of the minimum D* candidates pT threshold, is shown in three different pseudorapidity regions: barrel (blue squares), transition (green triangles) and endcap (red circles) for 2018 data.
-- ValentinaMariani - 2022-05-12
Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf deltaM_2b_data_FULL_CMSStyle.pdf r1 manage 19.1 K 2022-05-12 - 09:29 ValentinaMariani  
PNGpng deltaM_2b_data_FULL_CMSStyle.png r1 manage 17.4 K 2022-05-12 - 09:37 ValentinaMariani  
PNGpng deltaM_4b_data_FULL_CMSStyle.png r1 manage 17.4 K 2022-05-12 - 09:37 ValentinaMariani  
PDFpdf deltaM_4b_data_FULL_CMSStyle_(1).pdf r1 manage 18.9 K 2022-05-12 - 09:29 ValentinaMariani  
PNGpng efficiency_2016_postAPV.png r1 manage 19.4 K 2022-05-12 - 09:43 ValentinaMariani  
PNGpng efficiency_2016_preAPV.png r1 manage 19.3 K 2022-05-12 - 09:43 ValentinaMariani  
PNGpng efficiency_2017.png r1 manage 18.0 K 2022-05-12 - 09:43 ValentinaMariani  
PNGpng efficiency_2018.png r1 manage 17.7 K 2022-05-12 - 09:43 ValentinaMariani  
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Topic revision: r4 - 2022-06-27 - MarcoMusich
 
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