论文标题
在Hadron Colliders II上获得双重的Higgs玻色子生产：Zee-Babu案例研究
Doubly Charged Higgs Boson Production at Hadron Colliders II: A Zee-Babu Case Study
论文作者
论文摘要
通过在LHC上搜索所谓的Leptonic标量的搜索以及最近在Tevatron上测量了$ W $ BOSON的质量，我们重新审视了Zee-Babu模型的中微子质量的现象学，并能够将其与LHC的II类SeeSaw模型区分开来。我们得出的结论是，这项任务比以前认为的要困难得多。在这两种情况下，所有输入都相等，我们发现产生双重和单电荷标量对的总和差异速率在形状上相同，并且在归一化方面只有不同。标准化是通过辐射横截面的比例给出的，可以是统一。横截面的差异很小，可以通过未知的分支速率隐藏。这适用于drell-yan，$γγ$融合和$ gg $融合，以及QCD的LO和NLO的可观察物。这种相似性使我们能够重新解释II类SeeSAW上的II限制，并估算HL-LHC的预测。使用更新的中微子振荡数据，我们还发现一些对撞机的可观测器，例如Lepton风味侵略分支比率，现在已经足够精确地提供了前进的路径。还讨论了其他歧视手段。作为这项工作的副产品，我们报告了新的通用\ texttt {feynrules}对象的可用性，\ texttt {sm \ _zeebabu} ufo，可启用使用nlo+ll（ps）的完全微分模拟，该模拟使用工具链，用\ texttttttttt {ps）启用nlo+ll（ps）。
Motivated by searches for so-called leptonic scalars at the LHC and the recent measurement of the $W$ boson's mass at the Tevatron, we revisit the phenomenology of the Zee-Babu model for neutrino masses and the ability to differentiate it from the Type II Seesaw model at the LHC. We conclude that this task is much more difficult than previously believed. All inputs equal in the two scenarios, we find that total and differential rates for producing pairs of doubly and singly charged scalars are identical in shape and only differ in normalization. The normalization is given by the ratio of hadronic cross sections and can be unity. Differences in cross sections are small and can be hidden by unknown branching rates. This holds for Drell-Yan, $γγ$ fusion, and $gg$ fusion, as well as observables at LO and NLO in QCD. This likeness allows us to reinterpret Run II limits on the Type II Seesaw and estimate projections for the HL-LHC. Using updated neutrino oscillation data, we also find that some collider observables, e.g., lepton flavor-violating branching ratios, are now sufficiently precise to provide a path forward. Other means of discrimination are also discussed. As a byproduct of this work, we report the availability of new Universal \texttt{FeynRules} Object libraries, the \texttt{SM\_ZeeBabu} UFO, that enable fully differential simulations up to NLO+LL(PS) with tool chains employing \texttt{MadGraph5\_aMC@NLO}.
