Search for exotics at $BABAR$

TL;DR

This paper reviews $BABAR$ experiment results on exotic charmonium-like states, including searches for resonances in B decays and two-photon interactions, providing insights into hadron spectroscopy puzzles.

Contribution

It presents new experimental searches for exotic states like X(4140) and X(4270) in B decays and analyzes $ ext{eta}_c$ decays via two-photon interactions, advancing understanding of charmonium-like states.

Findings

No significant evidence for X(4140) and X(4270) resonances in B decays.

Dalitz analysis of $ ext{eta}_c$ decays provides new decay pattern insights.

Results contribute to the understanding of exotic hadron states.

Abstract

One of the most intriguing puzzles in hadron spectroscopy are the numerous charmonium-like states observed in the last decade, including charged states that are manifestly exotic. The $BABAR$ experiment has extensively studied those in B meson decays, initial state radiation processes and two photon reactions. The study of the process $B \rightarrow J/\psi \phi K$, with a search for the resonant states X(4140) and X(4270) in their decays to $J/\psi \phi$, will be highlighted. The recent results of the Dalitz analysis of $\eta_c$ to 3 pseudoscalar mesons, via 2-photon interactions, will be presented in this report