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Sensitivity of searches for new signals and its optimization
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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.
Forward citations
Cited by 10 Pith papers
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Precision measurement of CP violation and branching fractions in $B^{\pm} \to K^0_{\mathrm{S}} h^{\pm}$ $(h = \pi, K)$ decays and search for the rare decay $B_c^{\pm} \to K^0_{\mathrm{S}} K^{\pm}$
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Search for the decays $B_{(s)}^0\to J/\psi\gamma$ at LHCb
Upper limits of 2.9×10^{-6} for B_s^0 and 2.5×10^{-6} for B^0 on the branching fractions to J/ψγ at 90% CL, with the B_s limit improved by a factor of 2.5.
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