# Exotic quarkonium physics prospects at Belle II

## TL;DR

The paper discusses the Belle II experiment's enhanced capabilities to study exotic quarkonium states, particularly XYZ particles, which are heavy exotic hadrons with more than three quarks, advancing understanding in quantum chromodynamics.

## Contribution

It presents the prospects of Belle II to explore and analyze exotic quarkonium physics, highlighting its potential to discover new heavy exotic hadrons.

## Key findings

- Belle II can record 50 times more data than its predecessor.
- The experiment is well-positioned to study XYZ particles, expanding knowledge of exotic hadrons.
- Potential to discover new states within quantum chromodynamics.

## Abstract

The Belle II experiment at the SuperKEKB energy-asymmetric $e^+e^-$ collider is a substantial upgrade of the B factory facility at KEK in Tsukuba, Japan. It aims to record a factor of 50 times more data than its predecessor. The experiment completed a commissioning run in 2018, and began full operation in early 2019. Belle II is uniquely capable of studying the so-called XYZ particles: heavy exotic hadrons consisting of more than three quarks. First discovered by Belle, these now number in the dozens, and represent the emergence of a new category within quantum chromodynamics. This talk will present the prospects of Belle II to explore exotic quarkonium physics.