TAR Event and track selection 1) Ensure good TOF hits delta Y <1.5(cm) 2)TOF acceptance 1<n<0 150 Ensure rapidity distribution o 100 electron similar as that of pion 0.6<y<0 4)Ensure good primary track VAVPD)-VA(TPC)K<6( cm) .100 E 0900 50100150200 Vz from VPD (cm) e Jin-------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------- F. Jin 5 1) Ensure good TOF hits |deltaY|<1.5(cm) 2) TOF acceptance 10 3) Ensure rapidity distribution of electron similar as that of pion 0.6<y<0 4) Ensure good primary track | Vz(VPD) – Vz(TPC) |<6(cm) Event and track selection