Future Facilities: Electron Ion Colliders - The Next QCD Frontier: Understanding the Glue that Binds Us All
Jian-Wei Qiu · 2016
How to "see" the hadron's partonic structure?q High energy probes "see" the boosted partonic structure: Boost = time dilation Hard probe (t ~ 1/Q < fm): Catches the quantum fluctuation!P 1/R ⇠ ⇤ QCD ⌧ Q ² Longitudinal momentum fraction -x : ² Transverse momentum -confined motion: xP ⇠ Q q Challenge: No modern detector can see quarks and gluons in isolation!q Question: How to quantify the hadron structure if we cannot see quarks and gluons?We need the probe!QCD factorization!Not exact, but, controllable approximation! q Answer: