Expected Coverage of Bayesian Confidence Intervals for the Mean of a Poisson Statistic in Measurements with Background

Details Expected Coverage of Bayesian Confidence Intervals for the Mean of a Poisson Statistic in Measurements with Background Expected Coverage of Bayesian Confidence Intervals for the Mean of a Poisson Statistic in Measurements with Background

2000-05-11

arxiv.org/abs/hep-ex/0005019v1

Physics

High Energy Physics

High Energy Physics - Experiment

18 pages, 12 figures, 4 pages of text

Scientific paper

Expected coverage and expected length of 90% upper and lower limit and 68.27% central intervals are plotted as functions of the true signal for various values of expected background. Results for several objective priors are shown, and formulas for calculation of confidence intervals are obtained. For comparison, expected coverage and length of frequentist intervals constructed with the unified approach of Feldman and Cousins and a simple classical method are also shown. It is assumed that the expected background is accurately known prior to performing an experiment. The plots of expected coverage and length are provided for values of signal and background typical for particle experiments with small numbers of events.

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