Mainz 2022 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 57: Heavy-Ion Collisions and QCD Phases XII
HK 57.3: Vortrag
Donnerstag, 31. März 2022, 14:30–14:45, HK-H2
Physics opportunities with photons for the ALICE3 experiment — •Abhishek Nath for the ALICE collaboration — Physikalisches Institut, Ruprecht Karl University of Heidelberg, Germany
The ALICE Collaboration is writing an LOI of a next-generation multipurpose detector, the ALICE 3, to further contribute to the characterization of the macroscopic QGP properties with unprecedented precision at the LHC Run 5.
Since direct photons provide information about the initial stage of the collision as well as the space-time evolution of the QCD medium, studying background photons signals from meson decays deserves mention. The possibility of reconstruction photons through their conversion in the detector material, benefiting from the good momentum resolution for charged particles, and the large pseudorapidity coverage of the ALICE 3 detector can be jointly exploited to measure neutral mesons with high precision over a large momentum range.
While measurements of J/ψ, Υ are abundant at the LHC, measurements of χc, χb and other L=1 states in wide pT and rapidity ranges are needed, to provide stronger constraints on the spectral properties of bound states in the QGP and allow for a more accurate description of the dynamics of quarkonium interactions with the medium.
In this talk, we present performance studies of η meson measurements using the photon conversion method for ALICE 3. Moreover, the performance of χc measured through the radiative decay channel χc → J/ψ + γ is also presented.