e/pi rejection. Calculated based on PID likelihoods.
- DIRC@EIC, CORE
- 3-layer spherical lens with sapphire, r=[62,36]
- 3 mm pixels HIQ400, CE=95%
- e / pions @ 1.2 GeV/c; phi = 0 (no field)
- 100 ps time precision
- geometrical reconstruction with averaged LUT from 15M photons
- GR with per-PMT and chromatic corrections
- 15k tracks for pdf generation (per each particle species); 10k for determining separation
e/pi rejection factor as correctly identified electrons divided by the pion background (no optimization, pid cut at 0). Based on time imaging:
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Calculation based on Gaussian fits (full range) with PID cut at 0 (red) and at middle of two Gaussians (blue):
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Likelihoods distribution: