论文标题
在具有扩展标量扇区的模型中，对希格斯三线性耦合的双环校正
Two-loop corrections to the Higgs trilinear coupling in models with extended scalar sectors
论文作者
论文摘要
Higgs三联耦合$λ_{HHH} $对于了解Higgs领域的结构非常重要，并且允许搜索超出标准模式（BSM）物理的间接迹象，即使以某种方式隐藏了新的状态。特别是，在具有扩展希格斯扇区的模型中，众所周知，BSM-scalar贡献中的非耦合效应可能会导致$λ_{hhh} $显着偏离其SM预测，从而提出了一个在两个循环中发生的问题。我们在这里回顾了我们对两吉格斯 - doublet模型的对齐场景中领先的两环更正为$λ_{hhh} $的计算。我们发现它们的典型大小是单循环校正的10-20％，这意味着它们没有显着修改单循环的非耦合效应，但也不完全可以忽略不计。
The Higgs trilinear coupling $λ_{hhh}$ is of great importance to understand the structure of the Higgs sector and allows searching for indirect signs of Beyond-the-Standard-Model (BSM) physics, even if new states are somehow hidden. In particular, in models with extended Higgs sectors, it is known that non-decouplings effects in BSM-scalar contributions at one loop can cause $λ_{hhh}$ to deviate significantly from its SM prediction, raising the question of what happens at two loops. We review here our calculation of the leading two-loop corrections to $λ_{hhh}$ in an aligned scenario of a Two-Higgs-Doublet Model. We find their typical size to be 10-20% of the one-loop corrections, meaning that they do not modify significantly the one-loop non-decoupling effects, but are not entirely negligible either.
