Speaker
Description
The nucleon resonance spectrum provides fundamental information about non-perturbative QCD. The precise data from both photoproduction and hadronic reactions are essential in order to separate the overlapping broad nucleon resonances using a partial-wave analysis (PWA). The J-PARC E45 experiment has been set up to accurately measure the nucleon resonance spectrum through the $\pi N \to \pi\pi N$ hadronic reactions across an energy range from 1.5 to 2.15 GeV. The E45 detector system features a large-acceptance Superconducting Hyperon Spectrometer, equipped with a GEM-based time projection chamber (HypTPC). This spectrometer was designed for high-precision measurements with a high-rate capability up to 1 MHz beam at J-PARC. This presentation will discuss the current status of preparations and the anticipated outcomes of the E45 experiment.
