Mattione Study b1pi

• Generated 100000 X(2000) -> b1pi events following the instructions here.
• Decay chain:

 gamma p -> p X(2000)0
               |
               |-> b1(1235)+ pi-
                    |
                    |-> omega pi+
                          |
                          |-> rho0 pi0
                               |   |-> gamma gamma
                               |
                               |-> pi+ pi-

Invariant Masses

• Pi0: Filled for all events with > 1 photon, filled for all possible photon combinations (so if three photons in an event, will fill 3 times).

• Rho0: Filled for all events with at least one pi+ and at least one pi-, filled for all possible pion combinations (so if two pi+'s and two pi-'s in an event, will fill 4 times).

• Omega: Filled for all events with at least: one pi+, one pi-, and two photons. Filled for all possible rho combinations, but for events with multiple pi0 candidates the pi0 with the closest mass is chosen (got lazy).

• B1+: Filled for all events with at least: two pi+, one pi-, and two photons. Filled for all possible combinations of these tracks (regardless of which pi+ formed the Rho0).

• X(2000)0: Filled for all events with at least: two pi+, two pi-, and two photons. Filled for all possible combinations of these tracks (regardless of which pi+ & pi- formed the Rho0).

• Event Count:

• Comparison of Generated and Reconstructed Tracks

File:Mattione Study b1pi Photons.gif

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