2009/10/18 by Stephen Godfrey, Godfrey, Stephen · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.0910.3409
10 pages, 11 figures, To be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C090726
openalex publication_date 2009/10/18 · arxiv created 2009/10/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
There have been numerous developments in hadron spectroscopy over the past year. In this brief review I focus on two general areas. In the first I give an update on hadrons with b-quarks. Their properties are in textbook agreement with QCD motivated constituent quark models. The second topic is the Charmonium-like XYZ states above open charm threshold that continue to be discovered. Many of these do not seem to be described as conventional cc states and may be hadronic molecules, Tetraquarks, or Charmonium Hybrids. The first topic is an example of how well we seem to understand hadrons while the second case reminds us of how much we still have to learn.