The Joint Physics Analysis Center: Recent results

TL;DR

The paper reviews recent theoretical developments by the Joint Physics Analysis Center in providing amplitude models for hadron physics, supporting experimental data analysis for current and upcoming experiments.

Contribution

It introduces new amplitude models for various hadron scattering and decay processes, tailored for analysis of high-precision experimental data from multiple collaborations.

Findings

Developed amplitudes for $oldsymbol{ ext{π}N}$ and $oldsymbol{ar{ ext{K}}N}$ scattering

Created photoproduction amplitudes for pion and $oldsymbol{J/oldsymbol{ extpsi}}$

Provided downloadable codes for experimental data analysis

Abstract

We review some of the recent achievements of the Joint Physics Analysis Center, a theoretical collaboration with ties to experimental collaborations, that aims to provide amplitudes suitable for the analysis of the current and forthcoming experimental data on hadron physics. Since its foundation in 2013, the group is focused on hadron spectroscopy in preparation for the forthcoming high statistics and high precision experimental data from BELLEII, BESIII, CLAS12, COMPASS, GlueX, LHCb and (hopefully) PANDA collaborations. So far, we have developed amplitudes for $\pi N$ scattering, $\bar{K}N$ scattering, pion and $J/\psi$ photoproduction, two kaon photoproduction and three-body decays of light mesons ($\eta$, $\omega$, $\phi$). The codes for the amplitudes are available to download from the group web page and can be straightforwardly incorporated to the analysis of the experimental data.