Dynamical coupled-channels approach to electroweak meson productions on nucleon and deuteron

Abstract

I overview our recent activity with the Argonne-Osaka dynamical coupled-channels (DCC) approach that provides a unified description of various electroweak meson productions on single nucleon and nucleus. First I discuss the DCC model of a single nucleon. The DCC model has been developed through a comprehensive analysis of $\pi N,\gamma N\to \pi N,\eta N,K\Lambda ,K\Sigma$ reaction data. The model has been further extended to finite $Q^2$ region by analyzing pion electroproduction data, and to neutrino-induced reactions using the PCAC relation. Next I discuss applications of the DCC model to electroweak meson productions on the deuteron. We consider impulse mechanism supplemented by final state interactions (FSI) due to $NN$ and meson-nucleon rescatterings. Using this model, I discuss FSI corrections needed to extract $\gamma$-neutron reaction observables from $\gamma d\to \pi NN$, and a novel method to extract $\eta N$ scattering length from $\gamma d\to \eta pn$. I also discuss FSI corrections on the existing neutrino-nucleon pion production data that had been extracted from neutrino-deuteron data.

9 pages, 10 figures; Plenary talk at 15th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon (MENU-2019), June 2-7 2019, Pittsburgh, USA

References in corpus (14)

• Constraining the GENIE model of neutrino-induced single pion production using reanalyzed bubble chamber data
• Dynamical coupled-channels model of $K^{-}p$ reactions (I): Determination of partial-wave amplitudes
• Isospin decomposition of $\gamma N\to N^{\ast }$ transitions within a dynamical coupled-channels model
• Angular distributions in electroweak pion production off nucleons: odd parity hadron terms, strong relative phases and model dependence
• Extraction of Meson Resonances from Three-pions Photo-production Reactions
• Towards a Unified Model of Neutrino-Nucleus Reactions for Neutrino Oscillation Experiments
• Photoproduction of pi0-mesons off neutrons in the nucleon resonance region
• Differential Cross Section Measurements for $\gamma n\to {\pi }^{-}p$ Above the First Nucleon Resonance Region
• Impact of final state interactions on neutrino-nucleon pion production cross sections extracted from neutrino-deuteron reaction data
• Toward establishing low-lying $\Lambda$ and $\Sigma$ hyperon resonances with the $\bar{K}+d\to \pi +Y+N$ reaction
• Photoproduction of {\boldmath{${\pi }^0$}} Mesons off Protons and Neutrons in the Second and Third Nucleon Resonance Region
• Low-energy $\eta$-nucleon interaction studied with $\eta$ photoproduction off the deuteron
• Extraction of $\gamma n\to \pi N$ observables from deuteron-target data
• Nuclear applications of ANL-Osaka amplitudes: pion photo-productions on deuteron