Precision calculations in non-perturbative QCD (I): Effective Field Theories (EFT’s), analyticity and dispersion relations
QCD symmetries at the hadron level can be used to construct EFT's able to describe the low energy hadronic phenomenology. Dispersion relations provide rigorous constraints to theoretical predictions that can be used to obtain accurate properties of excited states. Especially when combined with EFT’s, they provide a very powerful connection between the Hadronic and QCD realms. Theoretical tools developed here will be employed/tested to analyze the data used in Tasks 3 and 4.
Task 1 is divided into the following sub-tasks: