In this short review we elaborate the significance of resummation in k_T factorization theorem, and summarize the recent progresses in the calculations of the next-to-leading order contributions to B meson decays from the perturbative QCD (PQCD) approach. We also comment on the current status of the PQCD approach and highlight some key issues to develop it in the near future for more phenomenological applications.

中文翻译：

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PQCD迈向下一个领先订单的方法：简短回顾

在这篇简短的综述中，我们详细阐述了在k _T因式分解定理中恢复的重要性，并总结了从扰动QCD（PQCD）方法计算对B介子衰变的次最前阶贡献的最新进展。我们还对PQCD方法的现状进行了评论，并着重指出了在不久的将来开发该方法以用于更多现象学应用的一些关键问题。