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arXiv 2405.03396hep-ph
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近简并 $Z'$ 玻色子的一致电弱唯象学

Consistent Electroweak Phenomenology of a Nearly Degenerate $Z'$ Boson

Prisco Lo Chiatto, Felix Yu

AI总结:

本文基于1-loop非厄米两点关联函数,推导了近简并$Z'$玻色子在$Z$共振附近的自洽对撞机约束,阐明了avoided level crossing与量子Zeno效应致宽度抑制在解释约束中的关键作用,并讨论了对未来Z极点测量的意义。

摘要:

提取隐藏在 Standard Model $Z$ 玻色子共振下的新 $U(1)'$ 规范玻色子之间动力学混合的约束,需要 1-loop order 的 non-Hermitian two-point correlation functions 形式体系。我们推导了在 $Z$ 玻色子周围狭窄质量窗口内具有动力学混合的 $Z'$ 玻色子的自洽对撞机约束,同时考虑了 model-independent 和 model-dependent 边界。我们的处理阐明了在解释现有约束时,avoided level crossing 和由 quantum Zeno effect 引起的宽度抑制的重要性。我们还讨论了对未来 $Z$-pole 测量的意义。

英文摘要:

Extracting constraints on kinetic mixing between a new $U(1)'$ gauge boson hiding under the Standard Model $Z$ boson resonance requires the formalism of non-Hermitian two-point correlation functions at 1-loop order. We derive self-consistent collider constraints on $Z'$ bosons with kinetic mixing in a narrow mass window around the $Z$ boson, considering both model-independent and model-dependent bounds. Our treatment elucidates the importance of both avoided level crossing and width suppression due to the quantum Zeno effect in interpreting the existing constraints. We also discuss the implications for future measurements on the $Z$-pole.

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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