论文标题
来自三线性希格斯耦合的扩展希格斯扇区的新约束
New constraints on extended Higgs sectors from the trilinear Higgs coupling
论文作者
论文摘要
$λ_{hhh} $耦合的三线性希格斯对于确定希格斯电位的结构和探测标准模型（SM）以外的物理的可能影响至关重要。以两种二键模型为具体示例，我们确定了参数区域，其中$λ_{hhh} $相对于SM可显着增强。考虑到所有相关校正，直到两回路级别，我们表明，$λ_{hhh} $上的当前实验界限排除了参数空间的重要部分，否则这些空间将不受限制。我们说明了基准方案上$λ_{hhh} $的结果的解释。预计具有扩展希格斯扇区的模型的广泛类别的结果相似。
The trilinear Higgs coupling $λ_{hhh}$ is crucial for determining the structure of the Higgs potential and for probing possible effects of physics beyond the Standard Model (SM). Focusing on the Two-Higgs-Doublet Model as a concrete example, we identify parameter regions in which $λ_{hhh}$ is significantly enhanced with respect to the SM. Taking into account all relevant corrections up to the two-loop level, we show that already current experimental bounds on $λ_{hhh}$ rule out significant parts of the parameter space that would otherwise be unconstrained. We illustrate the interpretation of the results on $λ_{hhh}$ for a benchmark scenario. Similar results are expected for wide classes of models with extended Higgs sectors.
