Taming systematic uncertainties at the LHC with the central limit theorem

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Author(s):	Fichet, Sylvain Total Authors: 1
Document type:	Journal article
Source:	Nuclear Physics B; v. 911, p. 623-637, OCT 2016.
Web of Science Citations:	7
Abstract
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. (AU)

FAPESP's process:	14/21477-2 - Particle physics at the TeV scale and beyond: models and interpretations
Grantee:	Sylvain Pierre Joseph Fichet
Support Opportunities:	Scholarships in Brazil - Post-Doctoral