TL;DR
This paper reviews future energy-frontier colliders beyond the HL-LHC and their potential to significantly advance top quark physics through precision measurements at lepton and hadron colliders.
Contribution
It highlights the capabilities of upcoming colliders to vastly improve top quark property measurements compared to current and planned facilities.
Findings
Lepton colliders enable precise top quark mass and coupling measurements.
High-energy hadron colliders offer ultimate QCD interaction precision.
Combining colliders enhances measurement accuracy by two orders of magnitude.
Abstract
Several proposals exist for energy-frontier facilities after the HL-LHC. In this contribution I review the potential of these facilities to perform key measurements of top quark properties and interacions. Top quark precision physics at a lepton collider provides excellent opportunities for the determination of the top quark mass and its couplings to neutral electro-weak gauge bosons. Measurements at very high center-of-mass energy at a new hadron collider likely offer the ultimate precision on the QCD interaction of the top quark and its coupling to the Higgs boson. The combination of a lepton and a hadron collider can improve the precision of all these measurements by two orders of magnitude with respect to the current state-of-the-art and by an order of magnitude compared to the precision envisaged after 3/ab at the LHC.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Particle Detector Development and Performance · High-Energy Particle Collisions Research