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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.00502 |
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| _version_ | 1866910210752249856 |
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| author | Helenius, Ilkka Laulainen, Joni O. Preuss, Christian T. |
| author_facet | Helenius, Ilkka Laulainen, Joni O. Preuss, Christian T. |
| contents | We introduce a method for matching the neutral-current deep inelastic scattering process with parton showers at first order in the strong coupling. This multiplicative matching is achieved by reweighting leading-order Born-level events and requires that the first parton-shower emission is distributed according to the real matrix-element. The method is implemented as an internal matching strategy in the Pythia 8 event generator applicable with both currently available parton shower algorithms, the default one and Vincia. The validity of higher-order corrections is verified with comparisons against existing next-to-leading order simulations. The strategy is used to describe reduced cross-sections measured at the HERA collider, and we find better overall agreement and reduced uncertainties with the matching. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_00502 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Multiplicative matching of neutral current deep-inelastic scattering processes at next-to-leading order in PYTHIA 8 Helenius, Ilkka Laulainen, Joni O. Preuss, Christian T. High Energy Physics - Phenomenology We introduce a method for matching the neutral-current deep inelastic scattering process with parton showers at first order in the strong coupling. This multiplicative matching is achieved by reweighting leading-order Born-level events and requires that the first parton-shower emission is distributed according to the real matrix-element. The method is implemented as an internal matching strategy in the Pythia 8 event generator applicable with both currently available parton shower algorithms, the default one and Vincia. The validity of higher-order corrections is verified with comparisons against existing next-to-leading order simulations. The strategy is used to describe reduced cross-sections measured at the HERA collider, and we find better overall agreement and reduced uncertainties with the matching. |
| title | Multiplicative matching of neutral current deep-inelastic scattering processes at next-to-leading order in PYTHIA 8 |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2605.00502 |