Analyticity of QCD observables beyond leading-order perturbation theory

Understand

A theoretical framework is presented to treat hadronic observables within analytic perturbative QCD beyond the leading order of the coupling and for more than one single large momentum scale.

• The approach generalizes and extends the pioneering work of Shirkov and Solovtsov on an analytic strong running coupling.
• Some applications to hadronic observables at the partonic level are also discussed.