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physics.class-ph2026
A purely mechanical system realizing a Coulomb-like interaction
June-Haak Ee, U-Rae Kim, Jungil Lee
We solve in closed form a one-dimensional relativistic system: two masses interacting only through elastic collisions with a massless mediator bouncing between them. Momenta, times…
hep-ph2026
Resummation of threshold double logarithms in quarkonium fragmentation functions
Hee Sok Chung, U-Rae Kim, Jungil Lee
We develop a formalism for resumming threshold double logarithms that appear in fragmentation functions for production of heavy quarkonia. Threshold singularities appear in fixed-o…