e1hg_systematics Node1 e1hg_systematics + e1hg_systematics() + ~e1hg_systematics() + getAlpha() Node2 TArrayD Node2->Node1 -m_etBins Node3 TFile Node3->Node1 -m_file0 Node4 TH1D Node4->Node1 -m_hphot -m_helec -m_hphot2