SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 28: Heavy-Ion Collisions and QCD Phases VI
HK 28.4: Vortrag
Mittwoch, 22. März 2023, 15:00–15:15, SCH/A315
First dielectron measurements in pp collisions at 13.6 TeV with ALICE in Run 3 — •Florian Eisenhut for the ALICE Germany collaboration — Goethe-Universität Frankfurt am Main
With the new and upgraded detectors of ALICE, the experiment is capable to read out collision data in a continuous mode.
With a data acquisition rate 100 times larger than before, an integrated luminosity of more than 10 nb−1 is expected to be collected for Pb–Pb collisions during the Run 3 and 4 (2022-2032) data taking periods. Not only the improved readout of the detectors but also the reduced material budget, as well as the improved pointing resolution of the detectors, are crucial for the dielectron analysis. They will help to control the background from photon conversions and heavy-flavor hadron decays within the dielectron spectra.
This talk will give an overview of the first performance studies for dielectron analyses with the ALICE experiment based on data of pp collisions at 13.6 TeV in Run 3. It will summarize the techniques used to track, identify and select electrons and positrons. First results of the
dielectron spectra and their corresponding signal-to-background ratios and significances will be presented together with a comparison to the results in Run 2.