SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 74: Poster
HK 74.18: Poster
Donnerstag, 23. März 2023, 17:30–19:00, HSZ EG
Feasibility studies for measuring electrical conductivity in heavy ion collisions with ALICE 3 — •Clara Peter for the ALICE Germany collaboration — Goethe University, Frankfurt, Germany
The ability of matter to transport electrical charges is described by its electrical conductivity. For the medium produced in heavy-ion collisions this fundamental property has, up to now, no experimental constraints, while theoretical predictions give a large range of possible values. This transport coefficient is not only of great interest in itself, but also an important input for the model calculations. The dielectron production rate in the hot partonic and hadronic phase of the collision is directly related to the electrical conductivity of the medium at vanishing mass and pair pT. For this reason precise dielectron measurements in this phase space would be of great interest.
In this contribution we will explain the challenges to achieve such measurements focusing in particular on possible processes contributing to the irreducable physical background. Further we will discuss how the unique features of the ALICE 3 detector, planned at the LHC beyond 2030s, could enable dielectron measurements at very low invariant mass and pair pT.