Taming systematic uncertainties at the LHC with the central limit theorem
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Data
2016-10-01
Autores
Fichet, Sylvain [UNESP]
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Elsevier B.V.
Resumo
We study the simplifications occurring in any likelihood function in the presence of a large number of small systematic uncertainties. We find that the marginalisation of these uncertainties can be done analytically by means of second-order error propagation, error combination, the Lyapunov central limit theorem, and under mild approximations which are typically satisfied for LHC likelihoods. The outcomes of this analysis are i) a very light treatment of systematic uncertainties ii) a convenient way of reporting the main effects of systematic uncertainties, such as the detector effects occurringin LHC measurements. (C) 2016 The Author. Published by Elsevier B.V.
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Nuclear Physics B. Amsterdam: Elsevier Science Bv, v. 911, p. 623-637, 2016.