future sino-us collaboration in qcd phyics ten-year anniversary of star-china collaboration haiyan...
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Future Sino-US Collaboration in QCD Phyics
Ten-Year Anniversary of STAR-China Collaboration
Haiyan Gao 高海燕
Duke University
1
JLab Upgrade to 12 GeV
CHL-2
Enhance equipment in existing halls
Add new hallPrecision 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
Hall D – exploring origin of confinement by studying exotic mesons
Hall B – understanding nucleon structure via generalized 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)
12 GeV Scientific Capabilities
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.
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)
Solenoidal Large Intensity Device (SoLID)
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
APV GFQ2
2a(x) Y (y) b(x)
b(x): weak couplinga(x): quark structure information