Final state study Jaewon Park University of Rochester MINERvA/Jupiter Group Meeting, Jan 31, 2007.

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Presentation transcript:

final state study Jaewon Park University of Rochester MINERvA/Jupiter Group Meeting, Jan 31, 2007

2 Processes involving with final state Proton and muon tracks will determi ne primary vertex Two gammas are from CC NC

3 ECAL for Generate single pi0 ev ent  Theta=0, 20cm from U S-ECAL  200MeV to 1GeV OD hit ignored Energy summed using dE/dx weighting

4 Processes involving with final state Truth primary vertex is used Didn’t require minimum angle between two gammas  I used truth information to know which gammas is associated wit h each hits. Calculate gamma’s momentum from direction and energ y

5 Sanity check Compare reconstructed gamma with truth info rmation Truth info Using center of energy Difference

6 Sanity check(2)

7 invariant mass It’ll be useful to use thi s quantity in filter out b ackground.

8 resolution Good agreement with ECAL calculation

9 Next step Do same thing with real pi0 event  Determine primary vertex from proton track Scintillator bar ID can be used in stead of using truth hit position