1. final state study Jaewon Park University of Rochester MINERvA/Jupiter Group Meeting, Feb 21, 2007

2. 2 Energy calibration ID+ECAL+HCAL  Single pi0 (theta=0) beam  E(pi0)=100MeV to 1GeV Energy response is nonlinear function of bea m energy especially in low energy region If minimum gamma energy is required, calibr ation got better but loose efficiency Nonlinear calibration is tried, but it’s not good idea. Infinite ID

3. 3 mass Pi0 mass is determined from two gamma energ y and angle between the m To find out contribution of each error, try with tr ue value  Reco edep + true dir  True edep + reco dir Error of angle gets large r as E increases. Pi0 mass shift is due to nonlinear energy respon se at low energy region.

4. 4 2mm lead ECAL is used In nonlinear calibration I used instead of mass in infinite ID It’s very similar to True edep + reco dir in ID+ECAL+HCAL Remarks

5. 5 mass in infinite ID 2mm lead ECAL is used In nonlinear calibration I used inst ead of