The dynamics of the S$\left({}^{1}D\right)$+HD reaction has been investigated in the low energy regime by means of a statistical quantum method and mean potential phase space theory. Statistical predictions for cross sections down to 10${}^{-4}\mathrm{eV}$ and the corresponding isotope branching ratios have thus been calculated and compared with previous results from the literature. Integral cross sections are also extended up to 0.2 eV to compare with experimental excitation functions reported in the past. Differences between theoretical and experimental branching ratios regarding the two possible product channels, SD+H and SH+D, are observed.

中文翻译：

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S的统计调查$（{}^{\mathrm{1个}}d）$量子态中的+ HD反应

S的动力学$（{}^{\mathrm{1个}}d）$已经通过统计量子方法和平均势相空间理论研究了低能状态下的+ HD反应。横截面低至10的统计预测${}^{-4}\mathrm{电子伏特}$因此，已经计算出了相应的同位素分支比，并将其与文献中的先前结果进行了比较。与过去报道的实验激发函数相比，积分截面也可扩展至0.2 eV。观察到关于两种可能的产物通道SD + H和SH + D的理论和实验分支比之间的差异。