Conveners
Menu-2019 Plenary: Session 5
- Christian Weiss (Jefferson Lab)
The experimental technique of parity-violating electron scattering has been used for over four decades as a tool to study a variety of physics topics. They include sensitive tests of the electroweak Standard Model as probes for new physics, determination of the contribution of the strange quark sea to the nucleon's electromagnetic properties, and measurements of the neutron distributions in...
The so-called proton radius puzzle, the roughly 4% difference in the extracted values for the root-mean square charge radius of the proton from electron spectroscopy and scattering on one side, and muon spectroscopy on the other, remains unsolved for nine years now. Recent results from spectroscopy and scattering shed new light on the puzzle, but so far fall short of a satisfactory solution....
Despite the successes of the Standard Model of particle physics, it remains a challenge to understand the dynamics of the strong interaction among the building blocks of hadronic matter. At small distance scales or at high energies, the underlying theory, QCD, is well tested and understood. Our understanding of the strong interaction deteriorates dramatically at larger distances scales such as...
