Covariant tensor formalism for partial wave analyses of psi decay to mesons

TL;DR

This paper develops explicit covariant tensor formalism formulae for partial wave analyses of J/psi and psi' decays to mesons, aiding the search for exotic states like glueballs and hybrids.

Contribution

It introduces a comprehensive covariant tensor formalism for partial wave analysis of psi decays, facilitating detailed studies of meson structures.

Findings

Provides explicit PWA formulae for various channels

Enables better identification of glueballs and hybrids

Supports analysis of large datasets from BEPC and CLEO-C

Abstract

J/psi and psi' decay to mesons are a good place to look for glueballs, hybrids and for extracting strange and nonstrange components in mesons. Abundant J/psi and psi' events have been collected at the Beijing Electron Positron Collider (BEPC). More data will be collected at upgraded BEPC and CLEO-C. Here we provide explicit PWA formulae for many interesting channels in the covariant tensor formalism.