Hadron Physics at J-PARC

TL;DR

J-PARC's hadron physics program utilizes high-intensity meson beams to investigate hadronic matter, focusing on hadron structure, mass origin, and interactions, advancing understanding of QCD at low energies.

Contribution

This paper reviews J-PARC's recent experimental efforts using high-intensity beams to explore fundamental questions in hadron and nuclear physics.

Findings

Insights into hadron structure and mass origin.

New data on hadron interactions under broken flavor SU(3).

Advancement in low-energy QCD studies.

Abstract

The aim of the hadron physics research programs conducted at J-PARC is to explore the structure of hadronic matter using the world's highest-intensity meson beams. Since the first beam was extracted at the hadron experimental facility (HEF) in February 2009, a wide variety of physics experiments have been proposed and performed to address open questions regarding quantum chromodynamics (QCD) at low energy. The high-intensity $K^-$ and high-momentum beams available at J-PARC open a new era in hadron and nuclear physics, in which strange and charm quarks play an important role. We review the programs focused on addressing the hadron structure as strongly interacting composite particles, the origin of hadron mass, and interactions between hadrons under broken flavor SU(3) symmetry.