Sensitivity of searches for new signals and its optimization

Details Sensitivity of searches for new signals and its optimization Sensitivity of searches for new signals and its optimization

2003-08-15

arxiv.org/abs/physics/0308063v2

Physics

Data Analysis, Statistics and Probability

Talk from PhyStat2003, Stanford, Ca, USA, September 2003, PSN MODT002. 5 pages, LaTeX, 6 eps figures. Reformatted according to

Scientific paper

A frequentist definition of sensitivity of a search for new phenomena is discussed, that has several useful properties. It is based on completely standard concepts, is generally applicable, and has a very clear interpretation. It is particularly suitable for optimization, being independent of a-priori expectations about the presence of a signal, thus allowing the determination of a single set of cuts that is optimal both for setting limits and for making a discovery. Simple approximate formulas are given for the common problem of Poisson counts with background.

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