6 papers
Heavy-to-light Structure Functions at in QCD
Long Chen, Xiang Chen, Xin Guan +1
We present the first complete and perturbative QCD corrections to all five heavy-to-light structure functions underlying the triple-diff…
Triple Differential Heavy-to-light Semi-leptonic Decays at Next-to-Next-to-Next-to-Leading Order in QCD
Long Chen, Xiang Chen, Xin Guan +1
We report the first complete calculation of the five heavy-to-light hadronic structure functions underlying semi-leptonic heavy-quark decays at next-to-next-to-next-to-leading orde…
Two-loop QCD-corrections to
Xiang Chen, Xin Guan, Chuan-Qi He +1
We present a next-to-next-to-leading-order calculation within the nonrelativistic QCD framework for the process of . We find…
Determination of the Strong Coupling Constant from Inclusive Semi-leptonic Meson Decays
Yuzhi Che, Long Chen, Jinfei Wu +5
We demonstrate the feasibility of determining the strong coupling constant, , from the inclusive semileptonic decay width of mesons. We express the semileptonic decay…
Analytical two-loop amplitudes of at factories
Xiang Chen, Xin Guan, Chuan-Qi He +3
In double charmonium production, a long-standing challenge is that the theoretical predictions are not consistent with the measurements at B factories. Within the NRQCD framework,…
Blade: A package for block-triangular form improved Feynman integrals decomposition
Xin Guan, Xiao Liu, Yan-Qing Ma +1
In this article, we present the package {\tt Blade} as the first implementation of the block-triangular form improved Feynman integral reduction method. The block-triangular form h…