Speaker
Hee Sok Chung
(Korea University)
Description
We resum the double logarithmic singularities at threshold in heavy quarkonium fragmentation functions based on the nonrelativistic QCD factorization formalism. At fixed order, we reproduce the double logarithmic singularities known at next-to-leading order accuracy. Unlike fixed-order calculations, the resummed fragmentation functions we obtain are smooth functions that no longer contain singularities at threshold. We also discuss phenomenological applications including inclusive production at large transverse momentum.
Author
Hee Sok Chung
(Korea University)
Co-authors
Prof.
Jungil Lee
(Korea University)
Prof.
U-Rae Kim
(Korea Military Academy)
