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Correlations and Flow in Ultra-Relativistic Pb-Pb and pp collisions at the LHC

Presenter:
Dragos
Velicanu
Profile Link:
University:
Massachusetts Institute of Technology
Program:
CSGF
Year:
2013

This poster will discuss the collective behavior of the hottest and densest matter in the universe created in proton-proton and lead-lead collisions at the LHC at 7 TeV and 2.76 TeV center-of-mass energies with the CMS detector. At 30 times the density of a neutron star and a million times hotter than the center of the sun, this matter is capable of melting protons and neutrons into a hot soup of deconfined quarks and gluons exhibiting long-range correlations and possible hydrodynamic flow. I will focus on the peculiar features of these systems as seen through the eyes of two-particle correlations and the comparisons we can draw between them. These correlations are drawn from a pool of around 100 billion collisions that must be selected in real time and become datasets ranging in the tens-to-hundreds of terabytes, stored and analyzed on thousands of distributed nodes.