Aug 16 – 27, 2021
America/Los_Angeles timezone

The top quark electro-weak couplings after LHC Run 2

Not scheduled
ZOOM videoconf (SLAC)

ZOOM videoconf



Dr María Moreno Llácer (IFIC (CSIC-Uni.Valencia))


Recent measurements at the Large Hadron Collider allow for a robust and precise characterisation of the electro-weak interactions of the top quark. We present the results of a global analysis at next-to-leading order precision including LHC, LEP/SLD and Tevatron data in the framework of the Standard Model Effective Field Theory. We include a careful analysis of the impact of correlations among measurements, as well as of the uncertainties in the Effective Field Theory setup itself. We find remarkably robust global fit results, with central values in good agreement with the Standard Model prediction, and 95% probability bounds on Wilson coefficients that range from $\pm$0.35 to $\pm$8 TeV$^{-2}$. This result represents a considerable improvement over previous studies, thanks to the addition of differential cross-section measurements in associated production processes of top quarks and neutral gauge bosons.

Primary author

Dr María Moreno Llácer (IFIC (CSIC-Uni.Valencia))


Dr Martín Perelló (IFIC (CSIC-Uni.Valencia)) Dr Ana Peñuelas (IFIC (CSIC-Uni.Valencia)) Mr Víctor Miralles (IFIC (CSIC-Uni.Valencia)) Mr Marcos Miralles López (IFIC (CSIC-Uni.Valencia)) Dr Marcel Vos (IFIC (CSIC-Uni.Valencia))

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