#include <utility> struct dynamicModelParams{ enum enumDynamicModel {BreitWigner, BreitWignerBlattW, Flatte, MassIndependent}; enumDynamicModel dynamicModel; double mass; double width; double gFactor1; double gFactor2; pair<double, double> massPair1; pair<double, double> massPair2; complex<double> value; };