The process of radiative decay of a Higgs boson into a fermion-antifermion pair \( H\Rightarrow \overline{ff}\upgamma . \) is investigated within the framework of the Standard Model. Taking into account the helicity of fermions and the circular polarization of a γ-quantum, an analytical expression for the decay width has been obtained. Circular polarization of the γ-quantum is examined in detail as a function of the angle θ and the invariant mass x of the fermion pair.

中文翻译：

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辐射衰变中 γ 量子的圆极化 H ⇒ ff ¯ γ 。$$ H\Rightarrow \overline{ff}\upgamma 。$$ 第一部分

在标准模型的框架内研究了希格斯玻色子辐射衰变成费米子-反费米子对\( H\Rightarrow \overline{ff}\upgamma . \) 的过程。考虑到费米子的螺旋性和γ-量子的圆极化，已经获得了衰变宽度的解析表达式。γ-量子的圆极化作为角度 θ 和费米子对的不变质量 x 的函数进行了详细检查。