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hep-ph2008★ 16 cited
Gauge Invariance and k_T-Factorization of Exclusive Processes
F. Feng, J. P. Ma, Q. Wang
In the -factorization for exclusive processes, the nontrivial -dependence of perturbative coefficients, or hard parts, is obtained by taking off-shell partons. This bring…
hep-ph2006★ 50 cited
NRQCD Factorization for Twist-2 Light-Cone Wave-Functions of Charmonia
J. P. Ma, Z. G. Si
We show that the twist-2 light-cone wave-functions of eta_c and J/ψcan be factorized with nonrelativistic QCD(NRQCD) at one-loop level, where the nonperturbative effects are repres…