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arXiv · 2509.03596

Prospects for toponium formation at the LHC in the single-lepton mode

Benjamin Fuks·Kaoru Hagiwara·Kai Ma·Léandre Munoz-Aillaud·Ya-Juan Zheng
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Abstract

We investigate the formation of toponium in the single-leptonic final state at the LHC. Our study builds on our recently proposed framework that incorporates the associated non-perturbative effects into Monte Carlo simulations through the Green's function of the non-relativistic QCD Hamiltonian and the re-weighting of hard-scattering matrix elements. This allows us to perform a phenomenological analysis that demonstrates that a statistically significant excess from toponium formation could already be accessible in Run~2 data. Moreover, our results highlight observables that provide handles for signal characterisation and establish the single-leptonic channel as a competitive and complementary avenue for the ongoing exploration of toponium signatures at colliders.

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Benjamin Fuks, Kaoru Hagiwara, Kai Ma, Léandre Munoz-Aillaud, Ya-Juan Zheng. 2025-09-03. Prospects for toponium formation at the LHC in the single-lepton mode. https://doi.org/10.1016/j.physletb.2026.140436

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