Bulletin of the American Physical Society
APS April Meeting 2012
Volume 57, Number 3
Saturday–Tuesday, March 31–April 3 2012; Atlanta, Georgia
Session R6: Invited Session: Parton Density Studies at an Electron-Ion Collider |
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Sponsoring Units: GHP Chair: Ramona Vogt, Lawrence Berkeley National Laboratory Room: Embassy C |
Monday, April 2, 2012 1:30PM - 2:06PM |
R6.00001: The physics of strong color fields in nucleons and nuclei at high energies Invited Speaker: Raju Venugopalan Sub-femtoscopic snapshots of hadrons and nuclei reveal hadrons and nuclei at high energies to be a strongly correlated system of wee gluons. Remarkably, universal properties of this novel many-body regime of the strong interactions can be computed systematically using weak coupling techniques, and can be tested in deeply inelastic scattering and hadronic collisions. Understanding the properties of these strong color fields, besides being of intrinsic interest, is essential to complete our understanding of the decoherence and thermalization of quark-gluon matter in heavy ion collisions. [Preview Abstract] |
Monday, April 2, 2012 2:06PM - 2:42PM |
R6.00002: Border posts: transverse spin and the study of color confinement at the Electron Ion Collider (EIC) Invited Speaker: Dennis Sivers Quantum chromodynamics(QCD)contains an important border that separates hadronic physics into two distinct realms. There is a short-distance realm where the interactions of quarks and gluons can be understood by perturbation theory, and a long-distance realm in which individual hadrons interact with other hadrons through non-relativistic potentials. The border separating these disparate regimes is defined by what is universally assumed to be a fundamental property of QCD, the strict confinement of the color charges of the underlying SU3 gauge theory. The Electron Ion Collider, (EIC), a potential future experimental facility whose full capabilities are still being refined, offers the prospect for precision measurements that can study, in detail, emergent quantum structures associated with the dynamical constraints imposed by color confinement both within stable hadrons and within QCD jets. In particular, measurements involving spin asymmetries enlist the tomographic capabilities of spin-orbit dynamics to empower future experiments at the EIC to open avenues for unique discoveries about the nature of confined QCD systems. [Preview Abstract] |
Monday, April 2, 2012 2:42PM - 3:18PM |
R6.00003: Experiments at an Electron-Ion Collider Invited Speaker: Ernst Sichtermann Quantum Chromodynamics (QCD) is now widely acknowledged to be the correct theory to describe the strong interaction. Experimental observations have been essential in establishing the theory and continue to be essential in understanding all phases of QCD matter in the universe. Key open questions in high-energy nuclear physics concern the nature of strong color fields in nuclei and the internal spin structure of the nucleon in terms of quarks and gluons. A future polarized Electron-Ion Collider would enable precision measurements of the partonic structure of nucleons and nuclei, yielding unique insights in the momentum, spin, and spatial substructure of nucleons and nuclei. In the U.S. such an Electron-Ion Collider could be realized through upgrades of the existing RHIC or Jefferson Lab facilities. Selected physics opportunities and key experiments will be discussed. [Preview Abstract] |
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