Measurements of Chemical Potentials in Pb-Pb Collisions at √𝑠NN=5.02 TeV
ALICE Collaboration. (2024). Measurements of Chemical Potentials in Pb-Pb Collisions at √𝑠NN=5.02 TeV. Physical Review Letters, 133(9), Article 092301. https://doi.org/10.1103/physrevlett.133.092301
Julkaistu sarjassa
Physical Review LettersTekijät
Päivämäärä
2024Tekijänoikeudet
© 2024 CERN
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 √𝑠NN=5.02 TeV. Using the Statistical Hadronization framework, it is possible to obtain the value of the electric charge and baryon chemical potentials, 𝜇𝑄=−0.18±0.90 MeV and 𝜇𝐵=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.
Julkaisija
American Physical Society (APS)ISSN Hae Julkaisufoorumista
0031-9007Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/233589782
Metadata
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Rahoittaja(t)
Suomen Akatemia; Euroopan komissioRahoitusohjelmat(t)
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The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Lisätietoja rahoituksesta
European Research Council, Strong 2020—Horizon 2020 (Grants No. 950692, No. 824093), European Union; ICSC—Centro Nazionale di Ricerca in High Performance Computing, Big Data and Quantum Computing, European Union—NextGenerationEU; Academy of Finland (Center of Excellence in Quark Matter) (Grants No. 346327, No. 346328), Finland.Lisenssi
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