Work

Understanding neutrino pion production with the GiBUU model

Year: 2025

Type: article

Abstract: Pion production is a major source of systematic uncertainty in neutrino oscillation measurements. We report a systematic investigation of neutrino-induced pion production using MINERvA and MicroBooNE data within the GiBUU theoretical framework. The analysis begins by establishing baseline model parameters using inclusive and pionless data from MINERvA, MicroBooNE, and T2K experiments. We then examine the role of in-medium effects, including resonance broadening and nucleon-nucleon final-state interactions. While agreement with individual datasets can be achieved through specific model configurations, we demonstrate the difficulty of a unified description across all experiments: MINERvA measurements prefer minimum in-medium modifications, whereas MicroBooNE data require the maximum in-medium enhancement, revealing the complexity and richness of the underlying nuclear dynamics.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/yzqx-7ttd

Authors: Qiyu Yan, Kaile Wen, Kai Gallmeister, Xianguo Lu, Ulrich Mosel, Yangheng Zheng

Institutions: University of Warwick, University of Chinese Academy of Sciences, Institute of High Energy Physics, Justus-Liebig-Universität Gießen

Language: English

Topic: Neutrino Physics Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: National Natural Science Foundation of China

Award: G904559116