In TPhoton::GetPhotoelectronTheta() we calculate the beta using:
Double_t Beta = sqrt(1.0 - pow((Energy/ELECTRON_MASS + 1), -2.0));
Where Energy is the photon energy instead of the photoelectron one.
Is that an approximation done on purpose, since it hardly have a noticeable effect?
In TPhoton::GetPhotoelectronTheta() we calculate the beta using: Double_t Beta = sqrt(1.0 - pow((Energy/ELECTRON_MASS + 1), -2.0)); Where Energy is the photon energy instead of the photoelectron one. Is that an approximation done on purpose, since it hardly have a noticeable effect?