Charmonium and exotics from Belle
Xiaolong Wang

TL;DR
This paper reviews recent Belle experiment results on charmonium and exotic states, including searches for X-like states, measurements of Y states, evidence for charged structures, and observations of X(3872), advancing understanding of charmonium spectroscopy.
Contribution
It provides new measurements and evidence for exotic charmonium-like states, including a charged structure and updated properties of Y states, using Belle data.
Findings
Evidence for a charged charmoniumlike structure at 4.05 GeV/c^2
Improved measurements of Y(4360) and Y(4660) properties
Observation of X(3872) in B decays
Abstract
The recent results on charmonium and charmoniumlike states from Belle experiment are reviewed. We summarise searches in decays for possible -like states in final states containing . The new measurement of improves the determination of the properties of and . The fits including are performed. Evidence for a charged charmoniumlike structure at is observed in the intermediate state in the decays. Belle also updates the measurement on via initial state radiation using the full data sample. Finally, Belle observed in .
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research
