Calibration of the momentum scale of a particle physics detector using the Armenteros-Podolanski plot

TL;DR

This paper presents a novel calibration method for particle detector momentum scales using a modified Armenteros-Podolanski plot and neutral particle decay data, improving measurement accuracy.

Contribution

It introduces a new calibration technique based on two-body decay mass measurements and a modified Armenteros-Podolanski plot, demonstrated with $K_S^0$ decay.

Findings

Effective momentum scale corrections achieved

Method validated with $K_S^0 o \pi^+ \pi^-$ decay

Potential for improved detector calibration accuracy

Abstract

A method for calibrating the momentum scale in a particle physics detector is described. The method relies on the determination of the masses of the final state particles in two-body decays of neutral particles, which can then be used to obtain corrections in the momentum scale. A modified version of the Armenteros-Podolanski plot and the $K_S^0 \to \pi^+ \pi^-$ decay is used as a proof of principle for this method.