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g g , g A physics in UPC A+A collisions
Typical diagrams for gg and gA collisions:
Main interest of g-induced collisions in UPC A+A collisions
- Precision QCD: Low bckgd & simpler initial state than nuclear A+A colls.
- Measurements: Dilepton pairs, hard photo-production (Quarkonia, jets, heavy-Q), ...
- Physics topics: QED in strong regime (Zaem~1), nuclear GA(x,Q2) function, small-x physics, QQbar dynamics in cold nuclear matter, ccbar (bbar) spectroscopy,. ..