Constraining top quark effective theory in the LHC Run II era

TL;DR

This paper provides a comprehensive global fit of top quark effective theory using recent experimental data from the Tevatron and LHC, constraining new physics effects in top quark interactions.

Contribution

It offers an updated analysis of top quark effective operators incorporating diverse measurements from multiple collider experiments.

Findings

All results are consistent with the Standard Model.

Bounds on dimension six operator coefficients are established.

The analysis highlights the importance of combining inclusive and differential data.

Abstract

We perform an up-to-date global fit of top quark effective theory to experimental data from the Tevatron, and from LHC Runs I and II. Experimental data includes total cross-sections up to 13 TeV, as well as differential distributions, for both single top and pair production. We also include the top quark width, charge asymmetries, and polarisation information from top decay products. We present bounds on the coefficients of dimension six operators, and examine the interplay between inclusive and differential measurements, and Tevatron / LHC data. All results are currently in good agreement with the Standard Model.