Improvement of Particle Identification by Energy Loss in a Stack of Silicon Detectors

Physics – Medical Physics

Scientific paper

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Scientific paper

We have studied the optimal use of information from silicon track detectors for particle identification, using a recent measurement with 4 GeV/c pions with low electronic noise. The raw data were modeled by the convolution of a density obtained by detailed simulation with a Gaussian that accounts for the measurement noise only. We observe excellent agreement with the data. Then a stack of fifteen detectors has been simulated from the experimental distribution. Using these data, the performance and robustness of some location estimators has been compared, including traditional methods such as truncated means and the Maximum Likelihood estimator, as well as a novel method, the optimal L-estimator.

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