https://doi.org/10.1140/epjc/s10052-020-8193-2
Regular Article - Theoretical Physics
Trijets in 
-factorisation: matrix elements vs parton shower
1
Particle Physics Group, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
2
Polish Academy of Sciences, Institute of Nuclear Physics, Radzikowskiego 152, 31-342, Kraków, Poland
3
Physics Faculty, AGH University of Science and Technology, Mickiewicza 30, 30-059, Kraków, Poland
* e-mail: krzysztof.kutak@ifj.edu.pl
Received:
24
April
2020
Accepted:
27
June
2020
Published online:
7
July
2020
We study 3-jet event topologies in proton-proton collisions at a centre-of-mass energy of 
in a configuration, where one jet is present in the central pseudorapidity region (
) while two other jets are in a more forward (same hemisphere) area (
). We compare various parton level predictions using: collinear factorisation, -factorisation with fully off-shell matrix elements and the hybrid framework. We study the influence of different parton distribution functions, initial state radiation, final state radiation, and hadronisation. We focus on differential cross sections as a function of azimuthal angle difference between the leading dijet system and the third jet, which is found to have excellent sensitivity to the physical effects under study.
© The Author(s), 2020
