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arXiv · 2602.12629

Scale dependence of top-quark cross section at $e^+e^-$ colliders near production threshold at NNNLO

Yuichiro Kiyo
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Abstract

The top-quark threshold cross section at $e^+e^-$ colliders near production threshold is investigated. We study the scale dependence of the cross section for $\sigma(e^+e^- \to ttX$) near $\sqrt{s} \simeq 2m_t$ and discuss the theoretical accuracy of the NNNLO prediction. We report that a threshold scan at an $e^+e^-$ collider would allow a determination of the top-quark mass with an accuracy of order 30 MeV.

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Yuichiro Kiyo. 2026-02-13. Scale dependence of top-quark cross section at $e^+e^-$ colliders near production threshold at NNNLO. https://arxiv.org/abs/2602.12629

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