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arXiv 1809.07562hep-ph
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$b\to s$反常现象的手征SU(4)解释

A chiral SU(4) explanation of the $b\to s$ anomalies

Shyam Balaji, Robert Foot, Michael A. Schmidt

摘要:

我们提出了Pati-Salam模型的一个变体,它具有规范群$SU(4)_C\times SU(2)_L\times U(1)_{Y'}$,其中手征左手夸克和轻子被统一到$SU(4)_C$的$\underline{4}$中,而右手夸克和轻子有相当不同的处理。$SU(4)_C$轻夸克规范玻色子可以解释在稀有衰变中测量到的轻子味普适性偏差:$\bar B \to \bar K^{(*)}\bar\ell\ell, \ell=μ,e$(被认为是新物理的暗示)。该模型满足相关的实验约束,并作出预测的重要$B$和$τ$衰变。这些预测将在LHCb和Belle II实验中进行测试,当统计数据增加时。

英文摘要:

We propose a variant of the Pati-Salam model, with gauge group $SU(4)_C\times SU(2)_L\times U(1)_{Y'}$, in which the chiral left-handed quarks and leptons are unified into a $\underline{4}$ of $SU(4)_C$, while the right-handed quarks and leptons have quite a distinct treatment. The $SU(4)_C$ leptoquark gauge bosons can explain the measured deviation of lepton flavour universality in the rare decays: $\bar B \to \bar K^{(*)}\bar\ell\ell, \ell=μ,e$ (taken as a hint of new physics). The model satisfies the relevant experimental constraints and makes predictions for the important $B$ and $τ$ decays. These predictions will be tested at the LHCb and Belle II experiments when increased statistics become available.

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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