Abstract
We address the potential of measurements with boosted single-top final states at the high-luminosity LHC (HL-LHC) and possible future hadron colliders: the high-energy LHC (HE-LHC), and the future circular collider (FCC). As new physics examples to assess the potential, we consider the search for tbW anomalous couplings and for a weakly-coupled W' boson. The FCC would improve by a factor of two the sensitivity to anomalous couplings of the HL-LHC. For W' bosons, the FCC is sensitive to W' couplings 2–5 times smaller than the HL-LHC in the mass range 2–4 TeV, and to masses up to 30 TeV in the case of Standard Model-like couplings.
Highlights
Future proton-proton colliders with higher energy and luminosity than the Large Hadron Collider (LHC) will push the energy frontier to the multi-TeV scale
We study the potential of single-top plus jet final states to probe anomalous tbW couplings and new W bosons decaying into
To set this sensivity in context, let us compare the numbers in Eqs. (10), (11) with current limits on the anomalous coupling gL
Summary
Future proton-proton colliders with higher energy and luminosity than the Large Hadron Collider (LHC) will push the energy frontier to the multi-TeV scale. Precision measurements will be possible near the TeV scale, which are not currently feasible at the LHC because of insufficient statistics. Precision measurements can probe new weakly-interacting resonances at the TeV scale, with cross sections too small to be detected at the LHC. Both physics cases will be addressed in this paper. We study the potential of single-top plus jet final states to probe anomalous tbW couplings and new W bosons decaying into. TeV, considering SM single top production as signal and the rest of processes as background. 6 we discuss the sensitivity to weakly-coupled TeV-scale W bosons.
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