Top physics at high-energy lepton colliders

TL;DR

This paper reviews the potential of future high-energy lepton colliders, like ILC and CLIC, to precisely measure top quark properties and interactions, surpassing current LHC capabilities.

Contribution

It provides an up-to-date assessment of top physics prospects at linear colliders, highlighting their advantages over the LHC in measuring top quark parameters and couplings.

Findings

Linear colliders can determine top quark mass and width with high precision.

They offer significantly better measurements of top interactions with electroweak bosons and the Higgs.

Prospects exceed LHC capabilities by an order of magnitude.

Abstract

A summary is presented of the workshop "top physics at linear colliders" that was held at IFIC Valencia from the 30th of June to the 3rd July 2015. We present an up-to-date status report of studies into the potential for top quark physics of lepton colliders with an energy reach that exceeds the top quark pair production threshold, with a focus on the linear collider projects ILC and CLIC. This summary shows that such projects can offer very competitive determinations of top quark properties (mass, width) and its interactions with other Standard Model particles, in particular electroweak gauge bosons and the Higgs boson. In both areas the prospects exceed the LHC potential significantly - often by an order of magnitude.