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Hanagaki, K; Kakuno, H; Ikeda, H; Iijima, T; Tsukamoto, T
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 06/2002, Letnik: 485, Številka: 3Journal Article
We report on electron identification methods and their performance in the Belle experiment at the KEK-B asymmetric B-Factory e +e − storage ring. Electrons are selected using a likelihood approach that takes information from the electromagnetic calorimeter, the central drift chamber, and the silica aerogel Cherenkov counters as input. We achieve an electron identification efficiency of (92.4±0.4)% with a π ± fake rate of (0.25±0.02)% for the momentum range between 1.0 and 3.0 GeV/c in laboratory frame.
