Neutrino-induced forward meson-production reactions in nucleon resonance region

Abstract

As a first step toward developing a reaction model that enables a comprehensive description of neutrino-nucleon reactions in the nucleon resonance region, we have applied for the first time a dynamical coupled-channels model, which successfully describes πN, γN --> πN, ηN, ππN, KΛ, KΣreactions up to W = 2 GeV, to predict the neutrino-induced meson-production reactions with ΔS = 0 at the forward angle limit. This has been achieved by relating the divergence of the axial-current matrix elements at Q^2 = 0 to the πN --> X reaction amplitudes through the PCAC hypothesis. We present the contributions from each of the πN, ηN, ππN, KΛ, KΣchannels to the F_2 structure function at Q^2 --> 0 limit up to W = 2 GeV.

arXiv comment9 pages, 3 figures

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• Progress and open questions in the physics of neutrino cross sections
• Heavy Hadrons in Nuclear Matter
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• Electron- versus neutrino-nucleus scattering
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• Light-quark baryon spectroscopy within ANL-Osaka dynamical coupled-channels approach
• Modern Dynamical Coupled-Channels Calculations for Extracting and Understanding the Nucleon Spectrum
• Light-quark baryon spectroscopy from ANL-Osaka dynamical coupled-channels analysis
• Neutrino-induced meson productions