Heavy Ion Collisions: The Big Picture, and the Big Questions

  title={Heavy Ion Collisions: The Big Picture, and the Big Questions},
  author={W. Busza and Krishna Rajagopal and Wilke van der Schee},
  journal={arXiv: High Energy Physics - Phenomenology},
Heavy ion collisions quickly form a droplet of quark-gluon plasma (QGP) with a remarkably small viscosity. We give an accessible introduction to how to study this smallest and hottest droplet of liquid made on earth and why it is so interesting. The physics of heavy ions ranges from highly energetic quarks and gluons described by perturbative QCD to a bath of strongly interacting gluons at lower energy scales. These gluons quickly thermalize and form QGP, while the energetic partons traverse… Expand

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