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Merging NLO multi-jet calculations with improved unitarization

Bellm, Johannes; Gieseke, Stefan; Plätzer, Simon

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.

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Verlagsausgabe §
DOI: 10.5445/IR/1000082442
Veröffentlicht am 04.06.2018
DOI: 10.1140/epjc/s10052-018-5723-2
Zitationen: 7
Web of Science
Zitationen: 6
Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
KITopen-ID: 1000082442
Erschienen in The European physical journal / C
Band 78
Heft 3
Seiten Article: 244
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 21.03.2018
Nachgewiesen in Web of Science
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