Kiyoshi Tanida

02 August 2021
A Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021

Abstract: The Belle II experiment at the SuperKEKB energy-asymmetric e+e- collider is an upgrade of the B factory facility at KEK in Tsukuba, Japan. The experiment began operation in 2019 and aims to record a factor of 50 times more data than its predecessor. 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. We present recent results in new Belle II data, and the future prospects to explore both exotic and conventional quarkonium physics.