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arXiv 2204.05945hep-ph
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用Wess-Zumino项耦合到反常电流的光矢量

Light vectors coupled to anomalous currents with harmless Wess-Zumino terms

Luca Di Luzio, Marco Nardecchia, Claudio Toni

备注：
23 pages, 1 figure. Minor corrections and references added. Matches published version
发表信息：
Phys. Rev. D 105, 115042 (2022)
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摘要：

我们重新考虑光矢量耦合到异常费米子电流的情况下，专注于紫外和红外动力学之间的相互作用。作为一个一般的框架计量的标准模型偶然的对称性，我们表明，它是可能的，设计一个异常的自由UV完成与大多数手征重费米子，使异常Wess-Zumino条款被抑制在IR，从而放松将是强的边界耦合到非守恒电流的光矢量的纵向发射。我们对这种情况进行了分类，并表明它们将在大型强子对撞机的高光度阶段通过测量$h \to Z γ$率和直接寻找非去耦带电轻子进行广泛的探测。

英文摘要：

We reconsider the case of light vectors coupled to anomalous fermionic currents, focussing on the interplay between UV and IR dynamics. Taking as a general framework the gauging of the Standard Model accidental symmetries, we show that it is possible to devise an anomaly-free UV completion with mostly-chiral heavy fermions such that anomalous Wess-Zumino terms are suppressed in the IR, thus relaxing would-be strong bounds from the longitudinal emission of light vectors coupled to non-conserved currents. We classify such scenarios and show that they will be extensively probed at the high-luminosity phase of the LHC via the measurement of the $h \to Z γ$ rate and the direct search for non-decoupling charged leptons.

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