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JetTriggerCSCPlots

Jet Trigger CSC Plots

The LVL1 jet transverse energy scale as function of truth jet transverse energy

The LVL1 jet transverse energy scale as function of truth jet pseudo-rapidity .

LVL1 jet transverse energy resolution as a function of truth jet transverse energy LVL1 jet trigger efficiency as function of the offline reconstructed jet ET for different LVL1 energy thresholds

The LVL1 jet transverse energy scale as function of truth jet transverse energy (a) for simulated dijet events with pile-up. The LVL1 jet trigger efficiency as function of offline reconstructed jets (b) for a 35 GeV LVL1 trigger threshold, with and without taking into account pile-up.

Variation in the (a) transverse energy, (b) phi position and (c) eta position of jets as function of number of iterations performed by the LVL2 jet reconstruction algorithm. The area of the boxes is proportional to the number of entries in each bin.

Time spent by the LVL2 jet reconstruction algorithm for two different window sizes: 1.4x 1.4 (dashed line) and 1.0x1.0 (solid line).

Jet energy scale for the LVl2 jets as a function of the truth jet ET (a), for four different bins in eta. Jet energy resolution as a function of the truth energy of the jet (b), for four different bins in eta. These results are obtained after calibration.

Comparison of the LVL2 jet energy scale and resolution obtained for two different MC generators, Pythia (blue circles) and Herwig (red triangles), for jets in the region 0<=eta<=0.7.

Trigger efficiency as function of offline jet transverse energy for LVL2 jets after calibration, for four different thresholds (35 GeV, 42 GeV, 70 GeV and 100 GeV). The statistical uncertainty on each point is smaller than the symbols.

Jet transverse energy scale for LVL2 jets as a function of the truth jet transverse energy (a), for four different eta regions. Jet transverse energy resolution as a function of the truth jet transverse energy (b), for four different eta regions. Both plots were obtained using dijet event samples reconstructed assuming a limited knowledge of the detector's dead material distribution.

The eta-resolution (a) and phi-resolution (b) of LVL2 cell-based jets with respect to the truth jet energy. The mean and standard deviation of a Gaussian fit of (a) is 0.0006 and 0.03, while the mean and standard deviation of a Gaussian fit of (b) is 0.00005 and 0.01.

(a) Jet energy scale for the LVL2 FEB-based jets as a function of the truth jet \et\ for four different bins in eta. (b) Jet energy resolution as a function of the truth energy of the jet for four different bins in eta. Both plots were obtained using dijet event samples reconstructed assuming a limited knowledge of the detector's dead material distribution.

The eta-resolution (a) and phi-resolution (b) of LVL2 FEB-based jets with respect to the truth jet energy. The mean and standard deviation of a Gaussian fit of (a) is 0.002 and 0.03, while the mean and standard deviation of a Gaussian fit of (b) is -0.00007 and 0.009.

LVL2 trigger efficiency as function of reconstructed jet transverse energy for FEB-based jets after calibration, for four different thresholds (35 GeV , 42 GeV , 70 GeV and 100 GeV )

The total processing time per event (a) for the LVL2 jet algorithm. The solid line is the processing time measured using the FEB-based method (mean 13 ms). The dashed line is the processing time measured using the cell-based method (mean 22 ms). The total data collection time per RoI (b) for both the cell-based and FEB-based data unpacking methods.

LVL2 jet algorithm processing time per jet RoI for the cell-based method (a) and FEB-based method (b). The total processing time is shown together with the execution time of the individual steps involved in the LVL2 jet reconstruction.

Distance between LVL2 and offline reconstructed jets using a cone algorithm of R=0.7.

The EF jet transverse energy scale (a) and resolution (b) as function of truth jet E_T.

{The EF jet transverse energy scale (a) and resolution (b) as function of truth jet E_T for simulated dijet event samples with pile-up.

EF trigger efficiency as function of offline jet transverse energy for two different trigger signatures consisting of a set of LVL1, LVL2 and EF trigger thresholds: (a) E_T_LVL1 > 10 GeV , E_T_LVL2> 23 GeV , E_T_EF > 48 GeV ; and (b) E_T_LVL1 > 70 GeV , E_T_LVL2>151 GeV , E_T_EF> 256 GeV .

Execution time per RoI for different steps in the EF data preparation (a) and the jet reconstruction.

Differential number of events selected as function of the offline reconstructed transverse energy of the leading jet in the event for 1 fb^-1 of data. The dashed and solid lines show the expected distributions before and after applying the LVL1 jet trigger menu criteria described in Table 9.

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Major updates:
-- PCondeMuino - 11 Mar 2009

Responsible: PCondeMuino
Last reviewed by: Never reviewed