STAMPS@CMU presents:

Uncertainty modeling in particle physics

by Wouter Verkerke (University of Amsterdam/Nikhef)

Online webinar April 5, 2024 at 1:00-2:00 PM ET.
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Wouter will present a pedagogical introduction to uncertainty modeling in particle physics. He will mostly focus on the methods used at the Large Hadron Collider experiments, where systematic effects are explicitly parameterized in the likelihood function in terms of nuisance parameters. Accurate modeling of systematic effects is of increasing importance at the LHC as the abundant data has decreased statistical uncertainties in many measurements to be on par with systematic uncertainties. He will discuss the reasoning behind the modeling approaches commonly chosen, common challenges in the parametric modeling and in the interpretation of the corresponding uncertainties. He will conclude with the special considerations in the modeling of theoretical uncertainties, which are often incompletely defined.


Wouter Verkerke is a professor in the physics department of the University of Amsterdam and is head of the ATLAS group at Nikhef, the Dutch Institute for particle physics. His research interests include Higgs boson physics and top quark physics at the Large Hadron Collider. Wouter is member of the ATLAS experiment at CERN since 20 years and has coordinated various of its analysis groups including the top quark physics group, the Higgs combination modelling group and the statistics forum. He is the author of one of the most popular statistical modelling tools in particles physics, RooFit, part of the ROOT data analysis package since 2003.