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arXiv 2402.09503hep-phhep-exhep-th
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探索味对称性景观

Exploring the Flavor Symmetry Landscape

Alfredo Glioti, Riccardo Rattazzi, Lorenzo Ricci, Luca Vecchi

备注：
Resubmission matches the version sent to the Journal. 109 pages, 9 figures, 16 tables
发表信息：
SciPost Phys. 18, 201 (2025)
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AI总结：

本文系统分类强相互作用轻 Higgs 场景中的味对称性选项，发现允许最低新物理尺度的模型具有中间味对称性，且需未来高能对撞机才能充分探索。

摘要：

我们在强相互作用轻希格斯（SILH）的广泛场景中探索味动力学。我们的研究聚焦于部分费米子复合机制，但在其他方面尽可能系统化。具体而言，我们分类了潜在的味（和CP）对称性的选项，这些对称性是使该场景安全地处于当前或未来探索范围内所必需的。在此背景下，我们的主要目标是提供一个从假设空间（模型）到中长期将在间接和直接搜索中探索的实验领域的实用图谱，实际上是在HL-LHC和Belle II、EDM搜索以及最终在FCC-hh中。我们的研究涵盖了具有最大可能味对称性的场景，对应于最小味破坏（MFV）；无对称性的场景，对应于所谓的味无政府状态；以及各种中间情况，以完善图景。一个主要结果是，允许最低新物理尺度的场景具有中间味对称性，而非MFV模型的最大对称性。这类最优模型对通过味和CP破坏可观测量进行的间接探索相当稳健，只能在未来的高能对撞机上得到令人满意的探索。另一方面，未来二十年的间接探索将显著压缩大量次优但更通用模型的参数空间，直至与FCC-hh相竞争的质量尺度。

英文摘要：

We explore flavor dynamics in the broad scenario of a strongly interacting light Higgs (SILH). Our study focuses on the mechanism of partial fermion compositeness, but is otherwise as systematic as possible. Concretely, we classify the options for the underlying flavor (and CP) symmetries, which are necessary in order to bring this scenario safely within the range of present or future explorations. Our main goal in this context is to provide a practical map between the space of hypotheses (the models) and the experimental ground that will be explored in the medium and long term, in both indirect and direct searches, in practice at HL-LHC and Belle II, in EDM searches and eventually at FCC-hh. Our study encompasses scenarios with the maximal possible flavor symmetry, corresponding to minimal flavor violation (MFV), scenarios with no symmetry, corresponding to the so-called flavor anarchy, and various intermediate cases that complete the picture. One main result is that the scenarios that allow for the lowest new physics scale have intermediate flavor symmetry rather than the maximal symmetry of MFV models. Such optimal models are rather resilient to indirect exploration via flavor and CP violating observables, and can only be satisfactorily explored at a future high-energy collider. On the other hand, the next two decades of indirect exploration will significantly stress the parameter space of a large swath of less optimal but more generic models up to mass scales competing with those of the FCC-hh.

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。

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