arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.05440hep-ph
收藏

扩展标量扇区模型中Higgs三线性耦合的双环修正

Two-loop corrections to the Higgs trilinear coupling in models with extended scalar sectors

Johannes Braathen, Shinya Kanemura

摘要:

希格斯三线性耦合$λ_{hhh}$对于理解希格斯扇区的结构非常重要,并且允许寻找超越标准模型(BSM)物理的间接迹象,即使新的状态以某种方式隐藏。特别是,在具有扩展希格斯扇区的模型中,已知在一个循环中的BSM标量贡献中的非重叠效应可以导致$λ_{hhh}$显著偏离其SM预测,从而提出了在两个循环中会发生什么的问题。我们在这里回顾我们的计算领先的双圈修正$λ_{hhh}$在一个对齐的方案的双希格斯双重模型。我们发现它们的典型大小是单回路校正的10-20%,这意味着它们不会显著修改单回路非去耦效应,但也不是完全可以忽略的。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑