TY  - CHART
AU  - ALICE Collaboration
TI  - Measurements of chemical potentials in Pb-Pb collisions at √{s<sub>NN</sub>} = 5.02 TeV
M1  - GSI-2025-00175
PY  - 2024
N1  - Journal Article GSI record: GSI-2025-00174
AB  - This Letter presents the most precise measurement to date of the matter-antimatter imbalance at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair √{s<sub>NN</sub>} = 5.02 TeV. Using the Statistical Hadronization framework, it is possible to obtain the value of the electric charge and baryon chemical potentials, μ<sub>Q</sub>=−0.18±0.90 MeV and μ<sub>B</sub>=0.71±0.45 MeV, with unprecedented precision. A centrality-differential study of the antiparticle-to-particle yield ratios of charged pions, protons, Ω-baryons, and light (hyper)nuclei is performed. These results indicate that the system created in Pb-Pb collisions at the LHC is on average baryon-free and electrically neutral at midrapidity.                            
LB  - PUB:(DE-HGF)32
DO  - DOI:10.17182/HEPDATA.151650
UR  - https://repository.gsi.de/record/356792
ER  -