Merging NLO Multi-jet Calculations with Improved Unitarization
(2018) In European Physical Journal C 78(3).- Abstract
- 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... (More)
- 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/fd7a8a29-3240-4401-a3b9-3e44f51024f3
- author
- Bellm, Johannes LU ; Gieseke, Stefan and Plaetzer, Simon
- publishing date
- 2018-03
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 78
- issue
- 3
- article number
- 244
- publisher
- Springer
- external identifiers
-
- scopus:85044184460
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-018-5723-2
- language
- English
- LU publication?
- no
- id
- fd7a8a29-3240-4401-a3b9-3e44f51024f3
- date added to LUP
- 2019-05-30 15:26:38
- date last changed
- 2022-04-02 18:14:28
@article{fd7a8a29-3240-4401-a3b9-3e44f51024f3, abstract = {{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.}}, author = {{Bellm, Johannes and Gieseke, Stefan and Plaetzer, Simon}}, issn = {{1434-6044}}, language = {{eng}}, number = {{3}}, publisher = {{Springer}}, series = {{European Physical Journal C}}, title = {{Merging NLO Multi-jet Calculations with Improved Unitarization}}, url = {{http://dx.doi.org/10.1140/epjc/s10052-018-5723-2}}, doi = {{10.1140/epjc/s10052-018-5723-2}}, volume = {{78}}, year = {{2018}}, }