Charged-Current Neutrino-Induced Single-Pion Production in the Superscaling Approach and Relativistic Distorted-Wave Impulse Approximation
Jesus Gonzalez-Rosa, Alexis Nikolakopoulos, Maria B. Barbaro, Juan A. Caballero, Raúl González-Jiménez + 1 more
TLDR
This paper compares SuSAv2 and RDWIA models against experimental data for charged-current neutrino-induced single-pion production.
Key contributions
- Presents a detailed comparison of SuSAv2 and RDWIA models for neutrino-induced single-pion production.
- Evaluates both theoretical descriptions against T2K, MINERvA, and MiniBooNE experimental data.
- Analyzes differences in pion production channels (π⁺, π⁻, π⁰) across a wide energy range.
- Highlights distinct model components, like SuSAv2's ANL-Osaka DCC and RDWIA's Ghent Hybrid model.
Why it matters
Accurate modeling of neutrino-nucleus interactions, especially pion production, is vital for precision neutrino oscillation experiments. This work helps refine theoretical models by comparing two prominent approaches, SuSAv2 and RDWIA, against experimental data. This comparison reduces systematic uncertainties in future neutrino experiments.
Original Abstract
In this work, we present a detailed comparison of the SuSAv2 (SuperScaling Approach version 2) and RDWIA (Relativistic Distorted-Wave Impulse Approximation) models with measurements of charged-current neutrino-induced single-pion production from different experiments (T2K, MINERvA and MiniBooNE), studying the differences between the two theoretical descriptions. The neutrino energy range in these experiments spans from hundreds of MeV to roughly 20 GeV, and the nuclear targets are mainly composed of $^{12}$C. The SuSAv2 model uses the single-nucleon inelastic structure functions from the ANL-Osaka DCC model, which allows for a separation of pion production channels, distinguishing between the $π^+$, $π^-$ and $π^0$ final states. In the RDWIA approach, the Hybrid model developed by the Ghent group is used for the description of the boson-pion-nucleon vertex.
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