New Charmonium-Like States at Babar and Belle

TL;DR

This paper reviews recent discoveries of new charmonium-like states by BaBar and Belle, emphasizing their production mechanisms in B decays and double charm processes to improve understanding of their nature.

Contribution

It provides a comprehensive overview of newly observed states and discusses their production mechanisms to distinguish between theoretical models.

Findings

Discovery of multiple unexpected resonances.

Insights into production mechanisms in B decays.

Implications for charmonium spectroscopy models.

Abstract

BaBar and Belle have recently revived the interest in charmonium spectroscopy, discovering many unexpected resonances. In this review, I'll focus mostly on the states found in B decays and double $\ccbar$. A better understanding of their production mechanism can help to discriminate among models, confirm tentative $J^{PC}$ assignments, and clarify the overall picture.