5 papers
Complete Next-to-Next-to-Leading-Order QCD Correction to Decay
Chao Zeng, Bin Gong, Jian-Xiong Wang +3
We address the long-standing problem of negative decay and production rates in perturbative QCD for exclusive processes by proposing amplitude-level NRQCD factorization as a system…
Semi-analytical results for up to at B factories
Cong Li, Hao-Yang Liu, Xu-Dong Huang +1
Within the NRQCD factorization framework, we investigate the color-singlet contribution to at B factories, computing the $\mathcal{O}(α_…
A new method for estimating unknown one-order higher QCD corrections to the perturbative series using the linear regression through the origin
Zhi-Fei Wu, Xing-Gang Wu, Jiang Yan +2
It is generally believed that the QCD theory is the fundamental theory for strong interactions. Due to the asymptotic freedom at the short distances, after proper factorization, on…
Two loop QCD corrections to in asymptotic expansion
Cong Li, Xu-Dong Huang, Wen-Long Sang
Within the framework of NRQCD, the short-distance coefficients (SDCs) for the process have been obtained up to NNLO in asymptotic expansions over $r={16m_c^2}…
Scale-invariant total decay width using the novel method of characteristic operator
Jiang Yan, Xing-Gang Wu, Jian-Ming Shen +2
In this paper, a novel method via using the characteristic operator~(CO) is proposed to extend the applicability of PMC, which is a theoretical genera…