论文标题
探测LHC处的外来三重希格斯耦合
Probing Exotic Triple Higgs Couplings at the LHC
论文作者
论文摘要
在不脱钩的扩展的希格斯扇区中，允许额外的标量与标准模型HigG具有较大的耦合。我们表明，可以直接适应当前的非谐振二吉格斯搜索，以在这些情况下寻找其他higgses，在这种情况下，可以增强非SM Higgses的一对生产。为了具体，我们研究了几乎惰性的两个higgs Doublet模型的奇异希格斯的生产，其中通过近似$ \ mathbb {z} _2 _2 $对称性来解释对齐，在该模型下，附加标量在于其他标量。在这种情况下，违反参数的$ \ mathbb z_2 $的小度抑制了异国情调的希格斯人的单一产生，但它不能阻止SM Higgs（$ h $）和其他州（$ h $）之间在SM Higgs（$ h $）之间达到相当大的三线耦合$ HHH $。我们研究了最终状态中的$ pp \ rightarrow h^* \ rightarrow hh $ $ b \ bar b b b \ bar b $，$ b \ barbγγ$和多级时。我们发现，在HL-LHC上，这些模式可能对$ 130 \ mbox {gev} \ sillsim m_h \ sillsim 290 \ mbox {gev} $的其他中性标量的质量敏感。
In extended Higgs sectors that exhibit alignment without decoupling, the additional scalars are allowed to have large couplings to the Standard Model Higgs. We show that current nonresonant di-Higgs searches can be straightforwardly adapted to look for additional Higgses in these scenarios, where pair production of non-SM Higgses can be enhanced. For concreteness, we study pair production of exotic Higgses in the context of an almost inert two Higgs doublet model, where alignment is explained through an approximate $\mathbb{Z}_2$ symmetry under which the additional scalars are odd. In this context, the smallness of the $\mathbb Z_2$ violating parameter suppresses single production of exotic Higgses, but it does not prevent a sizeable trilinear coupling $hHH$ between the SM Higgs ($h$) and the additional states ($H$). We study the process $pp\rightarrow h^* \rightarrow HH$ in the final states $b\bar b b \bar b$, $b\bar bγγ$, and multi-leptons. We find that at the HL-LHC these modes could be sensitive to masses of the additional neutral scalars in the range $130\mbox{ GeV} \lesssim m_H \lesssim 290\mbox{ GeV}$.
