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arXiv 2304.04643hep-ph
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非普适轴子模型中的IR/UV味关联

On the IR/UV flavour connection in non-universal axion models

Luca Di Luzio, Alfredo Walter Mario Guerrera, Xavier Ponce Díaz, Stefano Rigolin

AI总结:

本文研究非普适轴子模型中红外与紫外味破坏的关联,在PQ-2HDM框架下例证该关系,并讨论轴子味物理与重径向模信号的相互作用,指出味可观测量、LHC直接搜寻与标准轴子物理具有强互补性。

摘要:

非普适轴子模型的Peccei-Quinn(PQ,佩切伊-奎因)对称性以依赖代的方式作用于标准模型(SM)费米子,这类模型通常伴随两种不同的味破坏来源,本文将其称为红外(IR)和紫外(UV)味破坏。前者源于轴子与SM费米子的味破坏耦合,后者则来自为轴子有效场论提供紫外完备化的重自由度。本文指出这两种味破坏来源直接相关,并在一类通用的非普适轴子模型中例证了该关联,这类模型基于含两个希格斯二重态的可重整化类DFSZ结构(PQ-2HDM)。本文随后讨论了轴子味物理现象学与PQ-2HDM的重径向模产生的信号之间的相互作用,涉及介子振荡可观测量和带电轻子味破坏衰变。本文强调了味可观测量、大型强子对撞机(LHC)直接搜寻与标准轴子物理之间存在强互补性。

英文摘要:

Non-universal axion models, with the Peccei-Quinn (PQ) symmetry acting on Standard Model (SM) fermions in a generation-dependent way, are typically accompanied by two different sources of flavour violation, dubbed here as infrared (IR) and ultraviolet (UV). The former is due to the flavour violating axion couplings to SM fermions, while the latter arises from the heavy degrees of freedom that UV complete the axion effective field theory. We point out that these two sources of flavour violation are directly related and exemplify this connection in a general class of non-universal axion model, based on a renormalizable DFSZ-like setup with two Higgs doublets (PQ-2HDM). We next discuss the interplay of axion flavour phenomenology with the signatures stemming from the heavy radial modes of the PQ-2HDM, including meson oscillation observables and charged lepton flavour violating decays. We emphasize the strong complementarity between flavour observables, LHC direct searches and standard axion physics.

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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