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Sep 27 – 30, 2016
DESY Hamburg
Europe/Berlin timezone

Four-jet production in single- and double-parton scattering within high-energy factorisation

Sep 28, 2016, 4:35 PM
Seminar room 4a/b (DESY Hamburg)

Seminar room 4a/b

DESY Hamburg

Notkestrasse 85, 22607 Hamburg


Andreas van Hameren (IFJ PAN)


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.

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