On the limits of the hadronic energy resolution of calorimeters

TL;DR

This paper investigates the fundamental limitations of hadronic energy resolution in calorimeters and compares two correction methods, finding dual readout to be more effective based on experimental evidence.

Contribution

It provides an analysis of the causes of poor hadronic resolution and evaluates compensation and dual readout methods, highlighting the superiority of dual readout.

Findings

Dual readout shows better energy resolution than compensation.

Experimental results favor dual readout for hadronic calorimetry.

Understanding of root causes improves calorimeter design.

Abstract

In particle physics experiments, the quality of calorimetric particle detection is typically considerably worse for hadrons than for electromagnetic showers. In this paper, we investigate the root causes of this problem and evaluate two different methods that have been exploited to remedy this situation: compensation and dual readout. It turns out that the latter approach is more promising, as evidenced by experimental results.