Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2008-12-05
Nucl.Instrum.Meth.A604:729-737,2009
Physics
Nuclear Physics
Nuclear Experiment
22 pages, 7 figures, 2 tables
Scientific paper
10.1016/j.nima.2009.03.206
We have investigated how uncertainties in the estimation of the detection efficiency affect the 90% confidence intervals in the unified approach for constructing confidence intervals. The study has been conducted for experiments where the number of detected events is large and can be described by a Gaussian probability density function. We also assume the detection efficiency has a Gaussian probability density and study the range of the relative uncertainties $\sigma_\epsilon$ between 0 and 30%. We find that the confidence intervals provide proper coverage over a wide signal range and increase smoothly and continuously from the intervals that ignore scale uncertainties with a quadratic dependence on $\sigma_\epsilon$.
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