Hadron Renaissance: The Heavy-Quark Exotics

Explore the fascinating world of exotic hadrons in this theoretical physics colloquium presented by Prof. Richard Lebed from Arizona State University. Delve into the discovery of new particles that defy traditional classification as quark-antiquark mesons or 3-quark baryons. Learn about the X, Y, and Z particles believed to be tetraquarks, and the pentaquark states observed at the LHC. Examine competing theories on the structure of exotic particles, including molecular models and kinematical effects. Investigate the proposed role of compact diquarks in forming these unique bound states. Understand how the interplay between kinematics and diquark confinement creates a novel type of particle that exists briefly before decaying. Analyze observed effects supporting this theoretical framework and gain insights into the cutting-edge research in heavy-quark exotics, contributing to the ongoing renaissance in hadron physics.