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February 12, 2026Journal of High Energy Physics1 citationsOpen Access

Super-leading logarithms in top-quark pair production at hadron colliders

UBUpalaparna BanerjeeRGRomy GrünhoferMKMatthias König

Key Points

  • The aim is to extend the analysis of super-leading logarithms from massless to massive final states in hadron collisions.
  • Extend formalism to include massive final states in hadron collisions.
  • Derive anomalous dimensions related to super-leading logarithms.
  • Identify a new Coulomb phase contributing to logarithmic behavior.
  • Perform leading-logarithmic resummation for 2 → M processes.
  • Analyze numerical impacts for top-quark pair production.
  • Identified a new source of super-leading logarithms from the Coulomb phase.
  • Demonstrated significant effects on partonic scattering in top-quark production.
  • Observed Sommerfeld enhancement near the production threshold.

Abstract

A bstract To date, the appearance and resummation of “super-leading” logarithms in hadron-hadron collisions has been studied only for massless parton states. We extend the formalism to include an arbitrary number of massive final states. We derive the corresponding anomalous dimension and identify an additional Coulomb phase that gives rise to a new source of super-leading logarithms. We then perform a systematic leading-logarithmic resummation of these contributions for 2 → M processes. Finally, we analyze the numerical impact in partonic scattering processes for tt t t ¯ production, including a treatment of the Sommerfeld enhancement observed near threshold.

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Cite This Study

Banerjee et al. (2026) studied this question.

synapsesocial.com/papers/698d6e055be6419ac0d536e6https://doi.org/10.1007/jhep02(2026)092
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