by Panos Charitos. Published: 15 October 2013

In the beginning of October, a workshop on heavy flavor correlations in nuclear collisions was held by the Institute of Physics and Technology in Bergen, a town located on the west coast of Norway. The workshop aimed to build an exchange platform for theorists and experimentalists working in the domain of heavy-flavor correlations in nuclear collisions in order to explore the potentials and challenges of heavy-flavor correlation observables from proton-proton to heavy-ion collisions.

Starting from a general overview of the status of current measurements, participants discussed the need for defining new observables that will provide further evidences for the formation of the Quark Gluon Plasma and in-depth understanding of the interactions between heavy quarks and the medium.

Theorists and experimentalists, working in ALICE but also in other experimental facilities came together to discuss the latest results in the field. Recent physics results from LHC and RHIC were presented and compared to predictions of various theoretical models. The aim is to shed more light on how heavy-quarks (i.e. charm and beauty) interact with the medium that is expected to form in high-energy collisions of heavy-ion.

According to Sedat Altinpinar, one of the organizers: "one of the main aims is to understand where we are in this reserach domain and where we can go, based on theoretical predictions and experimental precision".

Currently, the feasibility and the performance of measurements of correlations of heavy-flavor signals (e.g. D mesons or electrons from heavy-flavor decay) with charged hadrons and with electrons from heavy-flavor hadron decay in pp, p-nucleus and nucleus-nucleus collisions with the current and upgraded detectors are studied. Moreover, pp collisions provide the baseline to understand the impact that the medium has on the heavy-flavor angular correlations in heavy-ion collisions. The plans are, particularly in view of the upgrades, to study observables more directly connected with charm-charm and beauty-beauty correlations.

Participants arrived from many institutes around the world, coming from Italy, Germany, Finland, the Netherlands, US and CERN, in addition to the local representatives from the University of Oslo and Bergen that were also heavily involved in this field of research.