On the question of the analysis of $J/\psi \rightarrow \rho\pi \rightarrow \pi^+\pi^-\pi^0$

TL;DR

This paper introduces a new angular analysis method for the decay process $J/9 ightarrow ho\u00129 ightarrow \u03c0^+\u03c0^-1$, improving event selection and potentially refining results in three-body decay studies.

Contribution

It proposes a novel angular expansion technique for analyzing $J/9$ decays, enhancing event selection and analysis efficiency.

Findings

Effective event selection in neutral and charge-conjugate modes

Simplifies analysis of similar three-body decays

Refines current decay analysis results

Abstract

This paper presents a method for the analysis of process $J/\psi \rightarrow \rho\pi \rightarrow \pi^+\pi^-\pi^0$ based on the consideration of the angles of expansion of finite pion pairs. The proposed approach makes it possible to effectively carry out selection of events in both neutral and charge-conjugate modes of the decay of $J/\psi \rightarrow \rho\pi$. Application of the method for the analysis of similar three-body decays in some cases will simplify the analysis and refine current results.