Speaker
Eric Braaten
(Ohio State)
Description
The XYZ mesons are unexpected mesons discovered in the last decade that
contain a heavy quark and antiquark but have properties that suggest they
also have additional constituents. Many of them are surprisingly narrow, and
several are definitely tetraquark mesons. Their existence presents a serious
challenge to our understanding of the spectrum of QCD. I will explain how the
Born-Oppenheimer approximation may provide a framework for understanding
the XYZ mesons within QCD.
Primary author
Eric Braaten
(Ohio State)
