Journal article
Logarithmically-accurate and positive-definite NLO shower matching
- Abstract:
- We present methods to achieve NLL+NLO accurate parton showering for processes with two coloured legs: neutral- and charged-current Drell-Yan, and Higgs production in pp collisions, as well as DIS and e+e− to jets. The methods include adaptations of existing approaches, as well as a new NLO matching scheme, ESME, that is positive-definite by construction. Our implementations of the methods within the PanScales framework yield highly competitive NLO event generation speeds. We validate the fixed-order and combined resummation accuracy with tests in the limit of small QCD coupling and briefly touch on phenomenological comparisons to standard NLO results and to Drell-Yan data. The progress reported here is an essential step towards showers with logarithmic accuracy beyond NLL for processes with incoming hadrons.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.2MB, Terms of use)
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- Publisher copy:
- 10.1007/jhep10(2025)038
Authors
- Publisher:
- Springer
- Journal:
- Journal of High Energy Physics More from this journal
- Volume:
- 2025
- Issue:
- 10
- Article number:
- 38
- Publication date:
- 2025-10-03
- Acceptance date:
- 2025-08-24
- DOI:
- EISSN:
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1029-8479
- ISSN:
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1126-6708
- Language:
-
English
- Keywords:
- Source identifiers:
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3342152
- Deposit date:
-
2025-10-04
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