Speaker
Andreas van Hameren
(IFJ PAN)
Description
We present a phenomenological study of 4-jet production, calculated
within high-energy factorization, including both contributions from
single-parton and double-parton scattering. High-energy
factorization causes a momentum inbalance in the final state,
allowing for the description of observables at tree-level that would
require next-to-leading order precision in collinear factorization.
The momentum inbalance is caused by non-vanishing transverse
momentum components for the initial-state partons which thus are
off-shell. We will clarify how to define gauge invariant scattering
amplitudes with off-shell partons, and how to calculate them
efficiently.
Primary author
Andreas van Hameren
(IFJ PAN)
