The ANL-Osaka Partial-Wave Amplitudes of $\pi N$ and $\gamma N$ Reactions

Abstract

The determination of the Argonne National Laboratory-Osaka University (ANL-Osaka) Partial-Wave Amplitudes (PWA) of $\pi N$ and $\gamma N$ Reactions is reviewed. The predicted PWA are presented on a web page (https://www.phy.anl.gov/theory/research/anl-osaka-pwa). The formulas are given for using the predicted PWA to calculate the cross sections of (1) meson-baryon ($MB$) scattering $MB\to M^{\prime }{B}^{\prime }$ with $MB,M^{\prime }{B}^{\prime }=\pi N,\eta N,K\Lambda ,K\Sigma$, (2) two-pion production $\pi N\to \pi \Delta ,\rho N,\sigma N\to \pi \pi N$, (3) Meson photoproduction $\gamma N\to \pi N,\eta N,K\Lambda ,K\Sigma$, (4) Pion electroproduction $N(e,e^{\prime }\pi )N$, (5) inclusive $N(e,e^{\prime })X$. We also present sample results from our fits to the data.

Comments: 55 pages, 33 figures; minor typos corrected