# XYZ at Belle

## TL;DR

This paper reviews recent experimental results on exotic heavy-quark states, including searches for specific particles, measurements of branching fractions, and new state discoveries in high-energy physics.

## Contribution

It provides new experimental data and searches related to XYZ states, including the $Y$(4260), $Y$(4630) spin partner, $P_s^+$ pentaquark, and $X$(3872) branching fractions.

## Key findings

- Search for $Y$(4260) in B decays
- Observation of a spin partner of $Y$(4630)
- Measurement of $X$(3872) branching fraction

## Abstract

Recent results of exotic states with heavy quarks, denoted as $XYZ$ states, are presented. The results include searches for the $Y$(4260) in $B$ meson decays, a spin partner of $Y$(4630), and the strange Pentaquark $P_s^+$. In addition, the measurements of the absolute branching fraction of $X$(3872) and search for double $Z_c$ production is discussed.