On Recent measurements of Toponium Threshold Enhancement in Entire-Function-Regulated Nonlocal Quantum Field Theory

TL;DR

This paper explores the top-antitop threshold enhancement at the LHC within a novel nonlocal quantum field theory framework, showing it can be explained without disrupting existing QCD tests.

Contribution

It introduces a gauge-covariant, entire-function-regulated nonlocal QFT approach to account for top-antitop threshold enhancements, linking phenomenology with ultraviolet completion effects.

Findings

Threshold excess explained by a data-driven cutoff parameter and small RG effects.

Toponium provides insights into infrared and ultraviolet QCD dynamics.

The approach maintains consistency with global QCD tests.

Abstract

We investigate the recently reported threshold enhancement in top-antitop production at the LHC in a finite, gauge-covariant, entire-function-regulated nonlocal quantum field theory framework. Our results demonstrate that the observed threshold excess can be consistently accommodated by a data-driven $\Lambda_{\mathrm{ker}}$ and small RG effects, while keeping global QCD tests intact. We quantify and contrast the key properties of the three heavyquark systems such as charmonium and bottomonium, highlighting the unique role of the top quark's decay width in shaping the phenomenology of toponium. Toponium emerges as a powerful laboratory for both infrared boundstate dynamics and ultraviolet completion effects opening new avenues for precision tests of QCD.