Merging NLO multi-jet calculations with improved unitarization

Autor(en)

Johannes Bellm, Stefan Gieseke, Simon Plätzer

Abstrakt

We present an algorithm to combine multiple matrix elements at LO and NLO with a parton shower. We build on the unitarized merging paradigm. The inclusion of higher orders and multiplicities reduce the scale uncertainties for observables sensitive to hard emissions, while preserving the features of inclusive quantities. The combination allows further soft and collinear emissions to be predicted by the all-order parton-shower approximation. We inspect the impact of terms that are formally but not parametrically negligible. We present results for a number of collider observables where multiple jets are observed, either on their own or in the presence of additional uncoloured particles. The algorithm is implemented in the event generator Herwig.

Organisation(en)

Teilchenphysik

Externe Organisation(en)

Durham University, Karlsruher Institut für Technologie, University of Manchester

Journal

European Physical Journal C

Band

78

Anzahl der Seiten

31

ISSN

1434-6044

Publikationsdatum

03-2018

Peer-reviewed

Ja

ÖFOS 2012

103012 Hochenergiephysik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/54f553fd-5460-46c5-91a1-3d8c14b93f7f