Modern Statistical Methods for GLAST Event Analysis
We describe a statistical reconstruction methodology for the GLAST LAT. The methodology incorporates in detail the statistics of the interactions of photons and charged particles with the tungsten layers in the LAT, and uses the scattering distributions to compute the full probability distribution over the energy and direction of the incident photons. It uses model selection methods to estimate the probabilities of the possible geometrical configurations of the particles produced in the detector, and numerical marginalization over the energy loss and scattering angles at each layer. Preliminary results show that it can improve on the tracker-only energy estimates for muons and electrons incident on the LAT.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 902101
- Report Number(s):
- SLAC-PUB-12426; astro-ph/0703738; TRN: US0702786
- Resource Relation:
- Conference: To appear in the proceedings of 1st GLAST Symposium, Stanford, Palo Alto, 5-8 Feb 2007
- Country of Publication:
- United States
- Language:
- English
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