[NT/RBRC seminar] Reggeization of partons in QCD from the eikonal Wilson-line formalism
by
CFNS library
https://bnl.zoomgov.com/j/1614715193?pwd=WkwxODVWdzZzb29zQnZRVGp3VTBDQT09
One of the most remarkable properties of QCD scattering amplitudes in the high-energy limit is the Reggeization of elementary particles. This phenomenon determines the all-order behavior of scattering amplitudes in the Regge limit, allowing the leading logarithmic contributions to be resummed into Regge trajectories. In recent years, it has been shown that gluon Reggeization admits a natural operator interpretation in terms of the rapidity evolution of infinite Wilson lines. After reviewing this connection for the Reggeized gluon, I will present its extension to the subeikonal sector, where an interpolating operator for the Reggeized quark can be identified in terms of semi-infinite Wilson lines. I will conclude by discussing its rapidity evolution and the emergence of the quark Regge trajectory of massive quarks.