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Advancing QCD Physics: Future Sino-US Collaboration in 12 GeV Upgrade Project

Explore the 12 GeV Upgrade Project in QCD physics collaboration between the US and China, focusing on precision measurements, exotic states, and nucleon structure. The project includes doubling accelerator beam energy, new experimental hall, and upgrades to existing halls, enhancing scientific capabilities across various research areas. International collaboration with over 190 collaborators aims to advance research in the field.

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Advancing QCD Physics: Future Sino-US Collaboration in 12 GeV Upgrade Project

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  1. Future Sino-US Collaboration in QCD Phyics Ten-Year Anniversary of STAR-China Collaboration Haiyan Gao 高海燕 Duke University

  2. Virginia Peninsula – Jefferson Lab

  3. Jefferson Lab – Aerial Site View

  4. Add new hall CHL-2 Enhance equipment in existing halls JLab Upgrade to 12 GeV Precision Measurement Frontier, Search for new, exotic QCD states and matter Maintain capability to deliver lower pass beam energies: 2.2, 4.4, 6.6… • Scope of the project includes: • Doubling the accelerator beam energy • New experimental Hall and beamline • Upgrades to existing Experimental Halls

  5. 12 GeV Scientific Capabilities Hall D – exploring origin ofconfinementby studying exotic mesons Hall B – understanding nucleon structure viageneralized parton distributions and TMDs Hall C – precision determination of valence quark properties in nucleons and nuclei Hall A – short range correlations, form factors, hyper-nuclear physics, future new experiments (e.g., PV, MOLLER and SoLID)

  6. Nucleon Structure with SoLID • Semi-inclusive Deep Inelastic Scattering program: • Large Acceptance + High Luminosity • + Polarized targets 4-D mapping of asymmetries Tensor charge, TMDs … • Lattice QCD, QCD Dynamics, Models. Solenoidal Large Intensity Device (SoLID) • International collaboration (8 countries, • 50+ institutes and 190+ collaborators) • Rapid Growth in US‐China Collaboration • (2 grants from NSFC + MOU) • Chinese Hadron collaboration • (USTC, CIAE, PKU, Tsinghua U, LZU, IMP) • - large GEM trackers • - MRPC-TOF • Five experiments approved for SoLID • with two having Chinese collaborators as • co-spokesperson (Li from CIAE and Yan from USTC)

  7. Parity Violation with SoLID • Parity-violating Deep Inelastic Scattering: • High Luminosity on LD2 and LH2 • Better than 1% errors for small bins over large range kinematics • Test of Standard Model • Quark structure: • charge symmetry violation • quark-gluon correlations b(x): weak coupling a(x): quark structure information

  8. SoLID Collaborators from China

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