601 citations · 5.5k across the 153 of their papers we have counts for
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Unification of the and threshold resummations
Hsiang-nan Li
We derive a resummation formula for a -dependent parton distribution function at threshold, where is a parton transverse momentum. The derivation requires infrared cutof…
and threshold resummations
Hsiang-nan Li
We demonstrate that both the and threshold resummations can be performed in the Collins-Soper resummation formalism by evaluating soft gluon emissions with infrared cutoffs f…
The decay in perturbative QCD
Hsien-Hung Shih, Shih-Chang Lee, Hsiang-nan Li
We develop perturbative QCD factorization theorems for the exclusive semileptonic heavy baryon decay , in which the relevant hadronic form factor is expressed as…
Perturbative QCD analysis of exclusive meson decays
Hsiang-nan Li
We review the perturbative QCD formalism for exclusive heavy meson decays, concentrating on the three-scale factorization theorem for nonleptonic processes. The formalism is then e…
A New Unified Evolution Equation
Jyh-Liong Lim
WE propose a new unified evolution equation for parton distribution functions appropriate for both large and small Bjorken x. Compared with the Ciafaloni- Catani-Fiorani-Marchesini…
Unified derivation of evolution equations
Hsiang-nan Li
We derive the evolution equations of parton distribution functions appropriate in different kinematic regions in a unified and simple way using the resummation technique. They incl…