Interface for accessing QCD-derived quantities from the observable layer.
High-level access to QCD quantities like α_s and running quark masses.
QCDConstants * get_constants() override
Returns a pointer to the internal QCD constants used by the provider.
double operator()(AlphasConfig config) override
Computes / retrieves alpha_s according to AlphasConfig.
Provides strong coupling constant and MS-bar mass values at various energy scales.
Configuration for evaluating the strong coupling constant .
Configuration for computing a particle mass at a given scale.
Collection of QCD-specific constants and coefficients.