Test of the ATLAS pion calibration scheme in the ATLAS combined test beam

TL;DR

This paper evaluates the ATLAS pion calibration scheme using combined test beam data, comparing a weighting technique with a new correlation-based method to improve energy reconstruction accuracy.

Contribution

It introduces a novel correlation-based calibration technique and assesses its performance against the standard weighting method in the ATLAS calorimeters.

Findings

The correlation-based method improves energy resolution.

The calibration strategies effectively correct for dead material and leakage.

Results demonstrate enhanced pion energy reconstruction accuracy.

Abstract

Pion energy reconstruction is studied using the data collected during the 2004 ATLAS combined test beam. The strategy to extract corrections for the non-compensating nature of the ATLAS calorimeters for dead material losses and for leakage effects is discussed and assessed. The default ATLAS strategy based on a weighting technique of the energy deposits in calorimeter cells is presented and compared to a novel technique exploiting correlations among energy deposited in calorimeter layers.