Light $O^{++}$ Mesons: Scalargators in Florida

Understand

Light scalar mesons abound in hadron processes, like the alligators in the Florida Everglades.

• Moreover, scalars are intimately tied to the vacuum structure of QCD.
• They are the product of many decays.
• Consequently, a rich source of recent information about them has come from experiments producing heavy flavour mesons.