In this paper, we study the triple top quark production at the future high-energy proton-proton colliders to probe the four-fermion interactions involving three top quarks. We employ the Standard Model Effective Field Theory (SMEFT) to find the upper limits at 95% CL on the Wilson coefficients of these kinds of four-fermion operators. We consider a detailed analysis with a unique signal signature of two same-sign leptons. A full simulation chain includes all the relevant backgrounds, realistic detector simulations, and a cut-based technique are taken into account. This study is presented for the HE-LHC working at the center of mass energy of 27 TeV with 15 ab⁻¹ and FCC-hh working at the center of mass energy of 100 TeV with 30 ab⁻¹. We show that the future high-energy proton-proton colliders could reach an impressive sensitivity to four-fermion contact interactions involving three top quarks.

在本文中，我们研究了未来高能质子-质子对撞机上三重顶夸克的产生，以探究涉及三个顶夸克的四费米子相互作用。我们采用标准模型有效场理论（SMEFT）在这些类型的四费米子算子的Wilson系数上找到95％CL的上限。我们考虑使用两个相同符号轻子的独特信号签名进行详细分析。完整的仿真链包括所有相关背景，逼真的探测器仿真和基于剪切的技术。此项研究针对的是在27 TeV的质量能中心以15 ab ^-1工作的HE-LHC和在100 TeV的质量能中心以30 ab ^-1工作的FCC-hh。我们表明，未来的高能质子-质子对撞机可能对涉及三个顶夸克的四费米子接触相互作用具有令人印象深刻的敏感性。