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arXiv 2108.07683hep-phhep-ex
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$a_μ$、希格斯物理学和对撞机前沿的有效联系

Effective connections of $a_μ$, Higgs physics, and the collider frontier

Anisha, Upalaparna Banerjee, Joydeep Chakrabortty, Christoph Englert, Michael Spannowsky, Panagiotis Stylianou

摘要:

我们认为标量扩展的SM和有效的场论概括,以说明之间的现象学连接的μ子$a_μ$,精确的希格斯测量的异常磁矩的精确测量,和直接对撞机的灵敏度。为此,我们考虑带电BSM标量部门的Zee-Babu型,我们开发了一个一致的,完整的尺寸-5和-6有效场论扩展。这使我们能够跟踪主要通过辐射相互作用与SM相互作用的通用新物理效应。虽然算子空间是高维的,但在大型强子对撞机上进行的外来搜索,希格斯信号强度和异常μ子磁性测量的交叉点非常小。我们发现LHC Higgs观测和$a_μ$的一致性需要新态的电弱性质的显著变形。在寻找双电荷标量的证据,目前所追求的LHC实验可以用来进一步紧张的BSMEFT参数空间和解决盲方向EFT扩展Zee-Babu方案。

英文摘要:

We consider scalar extensions of the SM and their effective field theoretic generalisations to illustrate the phenomenological connection between precision measurements of the anomalous magnetic moment of the muon $a_μ$, precision Higgs measurements, and direct collider sensitivity. To this end, we consider charged BSM scalar sectors of the Zee-Babu type for which we develop a consistent, and complete dimensions-5 and -6 effective field theory extension. This enables us to track generic new physics effects that interact with the SM predominantly via radiative interactions. While the operator space is high dimensional, the intersection of exotics searches at the Large Hadron Collider, Higgs signal strength and anomalous muon magnetic measurements is manageably small. We find that consistency of LHC Higgs observations and $a_μ$ requires a significant deformation of the new states' electroweak properties. Evidence in searches for doubly charged scalars as currently pursued by the LHC experiments can be used to further tension the BSMEFT parameter space and resolve blind directions in the EFT-extended Zee-Babu scenario.

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