Physics Goals and Performance Metrics

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Performance Metrics

  • How do we evaluate detector performance?
    • purity and efficiency of selected final states
  • What physics drives kaon ID?


Ultimate PID Review Milestones

Two milestones which have been discussed in the past are listed below. The first seems more appropriate for a PID review. However, the second will clearly probe things such as the impact of the FCAL/BCAL overlap region on the physics.


  • Using hit level Monte Carlo, demonstrate that the GlueX detector is capable of separating, with high purity, explicit rare final states that are key to hybrid study from more copiously produced backgrounds.
    • Requires:
      • full reconstruction of events
      • muti-detector charged particle PID+
      • kinematic fitting
      • method of generating generic photoproduction background
    • Validates:
      • intrinsic detector resolution
      • detector material choices
      • global PID scheme+

+ This first milestone could be separated into identifying rare non-strange and strange final states. Identification of non-strange final states would not require global PID and might be nice preliminary step to identifying strange final states.


  • For a specific pure final state, generate Monte Carlo with exotic resonances and use an amplitude analysis package to extract these resonances.
    • Requires:
      • full reconstruction of events
      • method of generating MC with resonances
      • amplitude analysis package
    • Validates:
      • detector acceptance