Charged Pion Energy Reconstruction in the ATLAS Barrel Calorimeter

2000/02/14 by M. Bosman, Bosman, M., Y. Kulchitsky +3
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0002033

Latex, 17 pages, 10 figures

arxiv created 2000/02/14 · arxiv updated 2009/11/30

Abstract

The intrinsic performance of the ATLAS barrel and extended barrel calorimeters for the measurement of charged pions is presented. Pion energy scans (E = 20, 50, 200, 400 and 1000 GeV) at two pseudo-rapidity points (η = 0.3 and 1.3) and pseudorapidity scans (-0.2 < η< 1.8) with pions of constant transverse energy (E_T = 20 and 50 GeV) are analysed. A simple approach, that accounts in first order for non-compensation and dead material effects, is used for the pion energy reconstruction. The intrinsic performances of the calorimeter are studied: resolution, linearity, effect of dead material, tails in the energy distribution. The effect of electronic noise, cell energy cuts and restricted cone size are investigated.

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