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arXiv 2409.18552hep-ph
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来自LHC Run 2和味道观测量对左右规范玻色子质量的模型无关限制

Model Independent Bounds on Left-Right Gauge Boson Masses from LHC Run 2 and Flavour Observables

Sergio Ferrando Solera, Antonio Pich, Luiz Vale Silva

AI总结:

本文利用LHC Run 2数据和味道观测量,研究了三个未施加额外离散对称性的左右模型,提出了对新规范玻色子质量的限制,并缓解了特定模型下的加速器限制,使新物理效应更接近可观测水平。

摘要:

左右模型(LRMs)是粒子物理标准模型(SM)最相关的扩展之一。它们引入了扩展的规范扇区,并能在足够高的能量下恢复宇称(P)或电荷共轭(C)对称性。这些理论可以嵌入到具有更大规范群的其他更基本的理论中。因此,与LRM规范群的自发对称性破缺(SSB)能标相比,C或P对称性的恢复可以被推向更高的能量尺度。我们研究了三个在标量扇区具有不同具体实现且未对理论施加任何额外离散对称性的LRMs。我们利用LHC Run 2的数据提出了对新规范玻色子质量的限制,研究了稀有介子衰变,讨论了右手夸克混合矩阵的结构以及中微子和标量扇区的影响。适用于特定LRM实现的加速器限制得到缓解,使得味道观测量中的新物理(NP)效应更接近可观测水平。

英文摘要:

Left-Right Models (LRMs) are one of the most relevant extensions of the Standard Model (SM) of particle physics. They introduce an extended gauge sector and can restore parity (P) or charge conjugation (C) symmetries at high enough energies. These theories can be embedded in other more fundamental ones with larger gauge groups. Consequently, the restoration of the C or P symmetries can be pushed towards higher energy scales compared to the scale of the Spontaneous Symmetry Breaking (SSB) of the LRM gauge group. We study three LRMs with different specific realizations of the scalar sector without imposing any additional discrete symmetry on the theory. We present bounds on the masses of the new gauge bosons using data from the LHC Run 2 and study rare meson decays, discussing the structure of the right-handed quark mixing matrix and the impact of the neutrino and scalar sectors. Collider bounds valid for specific LRM realizations are alleviated bringing New Physics (NP) effects in flavour observables closer to an observable level.

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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