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MOMENTUM RESOLUTION FOR RECONSTRUCTED PARTICLES AT MINQ2 = 1000

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Allan Prince S

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Dr. Nirbhay Kumar Behera

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Central University of Tamil Nadu

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Date:

1st May 2024

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Previously:

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Data Set:

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File path: dtn-eic.jlab.org//work/eic2/EPIC/RECO/23.12.0/epic_craterlake/DIS/NC/18x275/minQ2=1000

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Infile: First 20 files of the above folder

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Analysis Code:

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Reference: https://eic.github.io/tutorial-analysis/03-analysis/index.html

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Steps:

• Get Momentum of MC particle from tree.
• Get Momentum of reconstructed particle from tree.
• Calculate Resolution.

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• Delta Momentum (dPt) = (Pt^recon - Pt^true)

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• Resolution = dPt / Pt^true

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All Charged Particles:

All Eta Values:

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dPt vs Pt: Different Eta Ranges

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dPt / Pt vs Count: Different Eta Ranges

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Only Pions: PID = 211

All Eta Values:

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dPt vs Pt: Different Eta Ranges

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dPt / Pt vs Count: Different Eta Ranges

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Only Electrons: PID = 11

All Eta Values:

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dPt vs Pt: Different Eta Ranges

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dPt / Pt vs Count: Different Eta Ranges

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Only Muons: PID = 13

All Eta Values:

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dPt vs Pt: Different Eta Ranges

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dPt / Pt vs Count: Different Eta Ranges

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Only Kaons: PID = 321

All Eta Values:

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dPt vs Pt: Different Eta Ranges

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dPt / Pt vs Count: Different Eta Ranges

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Only Protons: PID = 2212

All Eta Values:

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dPt vs Pt: Different Eta Ranges

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dPt / Pt vs Count: Different Eta Ranges

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THANK YOU

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