Strong interaction physics with an Electron-Ion Collider - abstract

Christian Weiss, Jefferson Lab

4 pm  Friday, September 15, 2017

&01 W Grace St. (Laurel St. Entrance), Room 2310

 

Strong interaction physics with an Electron-Ion Collider

 

Nucleons (protons and neutrons) are the building blocks of atomic nuclei and make up most of the
visible matter in the Universe. Understanding their internal structure and external interactions
on the basis of the fundamental theory of strong interactions, Quantum Chromodynamics (QCD), is
a central objective of modern nuclear physics. High-energy electron scattering provides a precision
tool for probing structure at distances << 1 fm and observing QCD in action. A high-luminosity
Electron-Ion Collider (EIC) with center-of-mass energy 20-100 GeV is planned as a future facility
and will enable next-generation experiments in electron scattering. This includes measurements of
the gluons and sea quarks in the nucleon, their spatial distribution and orbital motion (3-dimensional
imaging), the QCD origin of nucleon-nucleon interactions in nuclei, and the emergence of coherent
gluon fields at high energies. The colloquium will give an overview of the basic concepts and
scientific questions, the experimental techniques, the expected impact of the EIC measurements,
and the connection with present experimental programs (Jefferson Lab 12 GeV Upgrade).
The presentation will emphasize the analogies of QCD with dynamical systems in other areas
of physics (atoms, condensed matter).