[Eg6_analysis] Coherent Pi0 Tree

[Frank C]

Dear all,

Attached are the 800+ events that either pass exclusivity cuts or pass
kinematic fit. The confidence level (for each event) and pulls (for each
particle's p, theta, and phi, for each event) are also included so you can
pick out the ones that pass the kin. fit (confidence level cut of 0.05).

Here's just a quick reference guide:

   - *runnb*, *evntid* are the usual run and event numbers *(Int_t)*
   - *helicity* is the helicity (+/-1) of the event *(Int_t)*
   -
*confLevel is the confidence level of the event (Double_t) *
   - *pulls* are the 12 pull values for a given event (*TVectorD*). The
   pulls are in this order:
      1. p_e
      2. theta_e
      3. phi_e
      4. .... Then same for he4, photon1, and photon2
   -
*P_e, P_he4, etc:  *
      - Measured 4-momenta of that particle (*TLorentzVector*)
   - *P_e_fit, P_he4_fit, etc:*
      - Fitted 4-momenta of that particle (*TLorentzVector*)
   - *exc_vars:* I just included the exclusivity variables calculated for
   each event (feel free to check!)
      1. MM^2 of final state e X pi0
      2. MM^2 of final state e he4 X
      3. MM^2 of final state e he4 pi0 X
      4. Missing px of final state e he4 pi0
      5. Missing py of final state e he4 pi0
      6. Misssing pt of final state e he4 pi0
      7. Missing E of final state e he4 pi0
      8. Cone angle between measured and calculated pi0
      9. Coplanarity: Angle between normals of the planes formed by
      1. Virtual photon and recoiled he4
         2. Recoiled he4 and pi0

Let me know if there's anything else I should include in this root file.

Thanks,
Frank
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