Tuva Richert - new Post Doc in the ALICE group – University of Copenhagen

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22 May 2018

Tuva Richert - new Post Doc in the ALICE group

Tuvas research interest is to understand why there seem to be no lower limit to the amount of matter it takes to form a system that exhibits strong collective behavior. The research will contribute to the unification of present paradigms showing two distinctly different descriptions of the same effect, for example enhanced strangeness production in 3 different collisions systems: proton-proton, proton-lead, and lead-lead -- producing a range of different energy densities and sizes of the final system, in which only the lead-lead collisions are expected to reach the deconfined QCD phase (Quark Gluon Plasma). I am analyzing data from all 3 collisions systems recorded by the ALICE experiment at LHC. In the analysis I am using the eta-reflection method to separate different underlying production mechanisms of strangeness by differentiating the soft part ("bulk" -- where the particles are formed by the expanding and cooling system, whether it is a Quark Gluon Plasma or not) from the hard contributions (initial parton scatterings forming jets). The method is based on analyzing pseudo rapidity symmetric correlations between a high transverse momentum "trigger" particle considered as proxy for the jet, and the associated hadrons.