Oct 2019 - Sept 2020

Towards a global analysis of the Standard Model Effective Field Theory

by Prof. Juan Rojo (NIKHEF)

OC218 (IPPP)




I present a novel framework for carrying out global analyses
of the Standard Model Effective Field Theory (SMEFT): SMEFiT. This
approach is based on the Monte Carlo replica method for deriving a
faithful estimate of the experimental and theoretical uncertainties and
enables one to construct the probability distribution in the space of
the SMEFT degrees of freedom. As a proof of concept of the SMEFiT
methodology, I present a first study of the constraints on the SMEFT
provided by top quark production measurements from the LHC. I then
discuss an complementary approach to constrain the SMEFT parameter space
space based on Bayesian inference. I also describe the first steps
towards a joint determination of the SMEFT degrees of freedom and of the
proton structure, an essential ingredient for the interpretation of
future LHC precision measurements. Finally, I outline the next steps in
a program aiming to construct a first global analysis of the SMEFT and
present first results of a global fit to top, Higgs, and electroweak
precision observables.