Interesting questions of Hadron Physics
Hadron Physics is explored in large international experimental facilities in Europe, Asia and the Americas, namely at CERN, JLab, GSI, KEK.
Experimental progress is complemented by theory and numerical simulations.
Hadron Physics addresses very fundamental and challenging questions on properties of matter. These questions are important for progress in fields such as astrophysics and cosmology, and, in addition, it contributes to technological applications, e.g., in medical imaging and radiation therapy, energy storage and production, and environmental issues.
Some of the theoretical methods used for the understanding of hadron systems can also be applied in other areas of physics, e.g. condensed matter physics, in particular to the study of superconductivity and graphene.
Some important open questions are:
- How does energy get stored in atoms?
- What does the emmissivity of matter under extreme conditions tell us about the workings of the universe?
- How does the nucleus of an atom "rock" under light, forming images of Nuclear Magnetic Resonance?
- What is the origin of the proton spin?
- Why do electron-scattering experiments and spectroscopy measurements of the muonic hidrogen atom give different results for the proton radius?
- How do elementary quarks acquire mass inside hadrons?
- Why is the pion mass so light and the proton so heavy?