在$h \to Vff'$前向后不对称中识别额外标量的存在
Fingerprinting the presence of extra scalars in the $h \to Vff'$ forward-backward asymmetry
摘要：
本文分析了排列双希格斯玻色子模型中$h\to Vff'$衰变的前后不对称性。标准模型对$V=W$的这种不对称性的预测很小，因为它受到Yukawa抑制的影响，而对$V=Z$则不存在。这不一定在对齐模型中成立，其中这些贡献原则上可以通过独立对齐因子$ς_f$重新增强。在这个分析中，我们的结论是，由于额外的贡献对应于对齐的两个希格斯双重模型连同额外的源CP破坏的$V=Z$通道，标准模型的预测可以显着修改在一个很大的区域的参数空间。这些偏差可能会在高亮度LHC或未来的希格斯工厂中被测量到，这将是新物理学的一个明确信号，并将为标准模型的可能扩展和CP破坏的新来源提供新的线索。
英文摘要：
In this work we analyse the forward-backward asymmetry of the $h\to Vff'$ decay in the Aligned two-Higgs Doublet Model. The Standard Model prediction for this asymmetry for $V=W$ is small, as it suffers from Yukawa suppression and is absent for $V=Z$. This does not necessarily have to hold true in the Aligned model where these contributions can in principle be re-enhanced through the independent alignment factors $ς_f$. In this analysis we conclude that, due to the additional contributions corresponding to the Aligned two-Higgs Doublet Model together with extra sources of CP-violation for the $V=Z$ channel, the Standard Model predictions can be significantly modified in a great region of the parameter space. These deviations, that could be potentially measured at the High Luminosity LHC or future Higgs factories, would be a clear signal of new physics, and would shed new light on the possible extensions of the Standard Model and new sources of CP-violation.
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