The Ghent Hybrid model in NuWro: a new neutrino single-pion production model in the GeV regime
Abstract Neutrino-induced single-pion production constitutes an essential interaction channel in modern neutrino oscillation experiments, with its products building up a significant fraction of the observable hadronic final states. Frameworks of oscillation analyses strongly rely on Monte Carlo neut...
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| Format: | Article |
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SpringerOpen
2024-12-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP12(2024)141 |
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| author | Qiyu Yan Kajetan Niewczas Alexis Nikolakopoulos Raúl González-Jiménez Natalie Jachowicz Xianguo Lu Jan Sobczyk Yangheng Zheng |
| author_facet | Qiyu Yan Kajetan Niewczas Alexis Nikolakopoulos Raúl González-Jiménez Natalie Jachowicz Xianguo Lu Jan Sobczyk Yangheng Zheng |
| author_sort | Qiyu Yan |
| collection | DOAJ |
| description | Abstract Neutrino-induced single-pion production constitutes an essential interaction channel in modern neutrino oscillation experiments, with its products building up a significant fraction of the observable hadronic final states. Frameworks of oscillation analyses strongly rely on Monte Carlo neutrino event generators, which provide theoretical predictions of neutrino interactions on nuclear targets. Thus, it is crucial to integrate state-of-the-art single-pion production models with Monte Carlo simulations to prepare for the upcoming systematics-dominated landscape of neutrino measurements. In this work, we present the implementation of the Ghent Hybrid model for neutrino-induced single-pion production in the NuWro Monte Carlo event generator. The interaction dynamics includes coherently-added contributions from nucleon resonances and a non-resonant background, merged into the pythia branching predictions in the deep-inelastic regime, as instrumented by NuWro. This neutrino-nucleon interaction model is fully incorporated into the nuclear framework of the generator, allowing it to account for the influence of both initial- and final-state nuclear medium effects. We compare the predictions of this integrated implementation with recent pion production data from accelerator-based neutrino experiments. The results of the novel model show improved agreement of the generator predictions with the data and point to the significance of the refined treatment of the description of pion-production processes beyond the ∆ region. |
| format | Article |
| id | doaj-art-1867c6acb65e4e16831e5071a5e3d657 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-1867c6acb65e4e16831e5071a5e3d6572025-01-05T12:06:22ZengSpringerOpenJournal of High Energy Physics1029-84792024-12-0120241212710.1007/JHEP12(2024)141The Ghent Hybrid model in NuWro: a new neutrino single-pion production model in the GeV regimeQiyu Yan0Kajetan Niewczas1Alexis Nikolakopoulos2Raúl González-Jiménez3Natalie Jachowicz4Xianguo Lu5Jan Sobczyk6Yangheng Zheng7School of Physical Sciences, University of Chinese Academy of SciencesDepartment of Physics and Astronomy, Ghent UniversityTheoretical Physics Department, FermilabDepartamento de Física Atómica, Molecular y Nuclear, Universidad de SevillaDepartment of Physics and Astronomy, Ghent UniversityDepartment of Physics, University of WarwickInstitute of Theoretical Physics, University of WrocławSchool of Physical Sciences, University of Chinese Academy of SciencesAbstract Neutrino-induced single-pion production constitutes an essential interaction channel in modern neutrino oscillation experiments, with its products building up a significant fraction of the observable hadronic final states. Frameworks of oscillation analyses strongly rely on Monte Carlo neutrino event generators, which provide theoretical predictions of neutrino interactions on nuclear targets. Thus, it is crucial to integrate state-of-the-art single-pion production models with Monte Carlo simulations to prepare for the upcoming systematics-dominated landscape of neutrino measurements. In this work, we present the implementation of the Ghent Hybrid model for neutrino-induced single-pion production in the NuWro Monte Carlo event generator. The interaction dynamics includes coherently-added contributions from nucleon resonances and a non-resonant background, merged into the pythia branching predictions in the deep-inelastic regime, as instrumented by NuWro. This neutrino-nucleon interaction model is fully incorporated into the nuclear framework of the generator, allowing it to account for the influence of both initial- and final-state nuclear medium effects. We compare the predictions of this integrated implementation with recent pion production data from accelerator-based neutrino experiments. The results of the novel model show improved agreement of the generator predictions with the data and point to the significance of the refined treatment of the description of pion-production processes beyond the ∆ region.https://doi.org/10.1007/JHEP12(2024)141Neutrino InteractionsNeutrino Mixing |
| spellingShingle | Qiyu Yan Kajetan Niewczas Alexis Nikolakopoulos Raúl González-Jiménez Natalie Jachowicz Xianguo Lu Jan Sobczyk Yangheng Zheng The Ghent Hybrid model in NuWro: a new neutrino single-pion production model in the GeV regime Journal of High Energy Physics Neutrino Interactions Neutrino Mixing |
| title | The Ghent Hybrid model in NuWro: a new neutrino single-pion production model in the GeV regime |
| title_full | The Ghent Hybrid model in NuWro: a new neutrino single-pion production model in the GeV regime |
| title_fullStr | The Ghent Hybrid model in NuWro: a new neutrino single-pion production model in the GeV regime |
| title_full_unstemmed | The Ghent Hybrid model in NuWro: a new neutrino single-pion production model in the GeV regime |
| title_short | The Ghent Hybrid model in NuWro: a new neutrino single-pion production model in the GeV regime |
| title_sort | ghent hybrid model in nuwro a new neutrino single pion production model in the gev regime |
| topic | Neutrino Interactions Neutrino Mixing |
| url | https://doi.org/10.1007/JHEP12(2024)141 |
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