Charmonium \& Charmonium-like States with BaBar

TL;DR

This paper reviews recent discoveries of charmonium and charmonium-like states at BaBar, highlighting new decay observations and state identifications that advance understanding of quarkonium spectroscopy.

Contribution

It provides a comprehensive review of recent experimental results on charmonium states from BaBar, including new decay modes and the identification of the $ ext{X}(3872)$ and $ ext{chi}_{c2}(2P)$ states.

Findings

Observation of $X(3872) o J/eta ext{omega}$ decay

Identification of $ ext{eta}_c(1S)$ and $ ext{eta}_c(2S)$ states

Observation of $ ext{chi}_{c2}(2P)$ state

Abstract

We review recent charmonium and charmonium-like state from the BaBar B-factory. A particular focus is given to the observation of the decay $X(3872) \to J/\psi \omega$ and to recent $\eta_{c}(1S)$ and $\eta_{c}(2S)$ results. The Observation of the $\chi_{c2}(2P)$ state will be also discussed