Towards colour flow evolution at two loops

Autor(en)
Simon Plätzer, Ines Ruffa
Abstrakt

We calculate the two-loop and one-loop/one-emission contributions required for soft gluon evolution at the next-to-leading order. The colour structures are expressed in the colour flow basis, and the kinematic dependence and loop integrals are expressed in terms of multiple cuts and phase-space-like integrals. This directly allows to use them in the resummation of non-global observables and improved parton shower algorithms beyond the leading order and beyond the leading colour limit. Within the colour flow basis it becomes apparent that correlations beyond a dipole picture emerge even in colour-diagonal elements of the virtual corrections.

Organisation(en)
Teilchenphysik, Forschungsplattform Internationales Erwin Schrödinger Institut für Mathematik und Physik
Journal
Journal of High Energy Physics
Band
2021
Anzahl der Seiten
36
ISSN
1029-8479
DOI
https://doi.org/10.1007/JHEP06(2021)007
Publikationsdatum
06-2021
Peer-reviewed
Ja
ÖFOS 2012
103012 Hochenergiephysik, 103034 Teilchenphysik
Schlagwörter
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/towards-colour-flow-evolution-at-two-loops(1a8e85af-d8ec-4541-b5c6-bfa1906713a1).html