The Institute of Nuclear and Particle Physics (INPP) presents Cesar Luiz da Silva, of Los Alamos National Laboratory, presenting “Quark-Gluon Plasma Tomography and Thermometry with Heavy Quarks and Quarkonia,” on Tuesday, October 04, at at 4 p.m. in Edwards Accelerator Lab, Roger W. Finlay Conference Room.
Cesar Luiz da Silva
Abstract: The dominant matter in the universe few microseconds after the Big Bang was composed by a plasma of quarks and gluons (QGP). The structure of the QGP and its equation-of-state directly affected the primordial density fluctuations, magnetic fields, and the initial expansion of the universe (Hubble parameter). The primordial QGP cannot be directly accessed through cosmological observables but can be reproduced in laboratory trough high energy collisions at the Relativistic Heavy Ion Collider (RHIC) in Brookhaven National Lab and at the Large Hadron Collider (LHC) in CERN. In order to map out the QGP structure with high resolution, one needs energy loss measurements of high energy hard probes produced before QGP is formed. Heavy quarks, charm and bottom quarks with mass around 1.5 GeV and 4.5 GeV, fulfill these requirements. The temperature of the QGP medium can be indirectly determined by the observation of quarkonia states suppression. These particles are formed by a pair of bound heavy quarks with binding energy similar to the free energy of the medium. This seminar will summarize two decades of QGP observations using quarkonia and heavy quarks and perspectives for the years to come.
Comments