We revisit the rare decays of the Higgs boson to two different quarks in the standard model (SM), which arise at the one-loop level. We perform Taylor series expansions to the complete form factors of the decay amplitudes, according to their different mass hierarchies, this allow us to take full advantage of the Glashow–Iliopoulos–Maiani (GIM) mechanism to eliminate spurious contributions and retain those that truly contribute. We found that Br( H → uc ) = 5.00 × 10 −20 , Br( H → ds ) = 1.19 × 10 −11 , Br( H → db ) = 5.16 × 10 −9 and Br( H → sb ) = 1.15 × 10 −7 . Our predictions for the H → uc , ds decays disagree with previous results in the literature.

中文翻译：

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重温标准模型中罕见的H→qiqj衰变

我们重新讨论了希格斯玻色子在标准模型（SM）中稀有的两个夸克的衰变，它们在一个循环的水平上出现。我们根据其不同的质量层次结构，对衰减幅度的完整形状因子执行泰勒级数展开，这使我们能够充分利用Glashow-Iliopoulos-Maiani（GIM）机制来消除虚假贡献并保留真正贡献的那些东西。我们发现Br（H→uc）= 5.00×10 −20，Br（H→ds）= 1.19×10 -11，Br（H→db）= 5.16×10 -9和Br（H→sb）= 1.15 ×10 -7。我们对H→uc，ds衰减的预测与文献中的先前结果不一致。