First Results from ALICE

COFFEE_KLATCH · Invited

Abstract

After nearly 20 years of preparations, first collisions at the LHC commenced in 2009. Since then proton beams have been collided at sqrt(s) = 0.9, 2.76 and 7 TeV, with the majority of the data being recorded at 7 TeV. In the Fall of 2010 another new era was entered when Pb-Pb collisions at 2.76 TeV were also delivered. ALICE's (A Large Ion Collider Experiment) main focus is on exploring the physics of strongly interacting matter created in these events. However, the pp data is also being investigated producing both intriguing new results, and serving as a baseline from which to compare the Pb-Pb data. I will present recent results from ALICE (A Large Ion Collider Experiment)from both the 2010 Pb-Pb run and the ongoing physics analyzes of the pp data. These first Pb-Pb results are broadly consistent with expectations based on lower energy RHIC and SPS data. They indicate that matter created in these collisions, while initially much larger and hotter, still behaves like a very strongly interacting, almost perfect liquid.

Authors

  • Helen Caines

    Yale University - on behalf of the ALICE collaboration