Two-pion transitions from the $P$-wave to $S$-wave charmonium states

TL;DR

This paper investigates two-pion decay processes in P-wave to S-wave charmonium transitions using heavy meson effective theory, providing qualitative predictions for decay width ratios.

Contribution

It introduces a theoretical framework to analyze two-pion decays in charmonium transitions and predicts decay width ratios, advancing understanding of heavy quarkonium decay mechanisms.

Findings

Predicted ratios of two-pion decay widths for charmonium transitions

Provided qualitative insights into decay mechanisms

Applied heavy meson effective theory to charmonium decays

Abstract

In this article, we study the two-pion decays in the $P$-wave to $S$-wave charmonium transitions with the heavy meson effective theory, and make qualitative predictions for the ratios among the two-pion decay widths.