void Output_Delphes::AnalyseEvent
(ExRootTreeBranch *branch,const HepMC::GenEvent& evt,
const Long64_t eventNumber,const double weight)
{
TRootLHEFEvent *element;
element = static_cast<TRootLHEFEvent*>(branch->NewEntry());
element->Number = eventNumber;
element->Nparticles = evt.particles_size();
element->ProcessID = evt.signal_process_id();
element->Weight = weight;
element->ScalePDF = evt.event_scale();
element->CouplingQED = evt.alphaQED();
element->CouplingQCD = evt.alphaQCD();
}
