A "Vector-like chiral" fourth family to explain muon anomalies
A "Vector-like chiral" fourth family to explain muon anomalies
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DOI：
10.1103/physrevd.97.095006
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发表时间：
2017-12
影响因子：
5
通讯作者：
S. Raby;A. Trautner
中科院分区：
文献类型：
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作者：
S. Raby;A. Trautner
用一代夸克和轻子修正了标准模型（SM），它们在SM规范群下是类矢量（VL）的，但在新的$U（1）3-4 $规范对称下是手征的.我们表明，该模型可以同时解释μ子$g-2$的偏差以及$B\rightarrow s\mu^+\mu^-$跃迁中观察到的异常，而不会与希格斯衰变、轻子味违反或$B_s-\bar{B}_s$混合的数据发生冲突。该模型是弦理论的动机和大统一理论兼容，即紫外线完成，并符合数据预测VL夸克，轻子和大规模的$Z '$在$\mathrm{TeV}$规模，以及$\tau\to\mu\gamma$在未来的实验范围内。希格斯耦合SM代自动对齐的味道空间。
The Standard Model (SM) is amended by one generation of quarks and leptons which are vector-like (VL) under the SM gauge group but chiral with respect to a new $\mathrm{U}(1)_{3-4}$ gauge symmetry. We show that this model can simultaneously explain the deviation of the muon $g-2$ as well as the observed anomalies in $b\rightarrow s\mu^+\mu^-$ transitions without conflicting with the data on Higgs decays, lepton flavor violation, or $B_s-\bar{B}_s$ mixing. The model is string theory motivated and GUT compatible, i.e. UV complete, and fits the data predicting VL quarks, leptons and a massive $Z'$ at the $\mathrm{TeV}$ scale, as well as $\tau\to3\mu$ and $\tau\to\mu\gamma$ within reach of future experiments. The Higgs couplings to SM generations are automatically aligned in flavor space.