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Commit a79c51b4 authored by Bertram Kopf's avatar Bertram Kopf
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added relativistic Breit Wigner II

parent 16165b1e
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...@@ -310,10 +310,9 @@ complex<double> BreitWigner(const Vector4<double> &__p4,double __mass, ...@@ -310,10 +310,9 @@ complex<double> BreitWigner(const Vector4<double> &__p4,double __mass,
complex<double> BreitWignerRel(const Vector4<double> &__p4,double __mass, complex<double> BreitWignerRel(const Vector4<double> &__p4,double __mass,
double __width, double __massA, double __massB){ double __width, double __massA, double __massB){
complex<double> i(0.,1.); complex<double> i(0.,1.);
double mass0=__p4.Mass(); complex<double> rho0_m=phaseSpaceFac(__mass, __massA, __massB);
complex<double> rho0_m0=phaseSpaceFac(mass0, __massA, __massB); return __mass*__width/(__mass*__mass - __p4*__p4- i*rho0_m*__mass*__width);
return __mass*(__width/rho0_m0)/(__mass*__mass - __p4*__p4- i*__mass*__width);
} }
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