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- top: electron efficiency and pion rejection factor, vs. cut in spec_l.gas.adc_sum_t, for short gas cherenkov dectector;
- bottom:electron efficiency and pion rejection factor, vs. 2D cut in lpr2e and lpr1e, for pion rejector, horizontal axis is in arbitrary unit.
Figure:
Left arm detector efficiency for a high electron run
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The arbitrary unit used for defining 2D cuts in preshowerE and showerE can be understood by figure
Figure:
2D cuts in lpr1E and lpr2E for PID analysis
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Xiaochao Zheng
2001-05-01