Szczegóły publikacji
Opis bibliograficzny
Measurements of chemical potentials in Pb-Pb collisions at $\sqrt{s_{NN}}$=5.02 TeV / S. Acharya, [et al.], B. BALIŚ, [et al.], M. GORGOŃ, [et al.], A. HORZYK, [et al.], M. JABŁOŃSKI, [et al.], J. P. KITOWSKI, [et al.], S. D. KORYCIAK, [et al.], T. M. LELEK, [et al.], E. M. MAJERZ, [et al.], R. W. MARCJAN, [et al.], P. G. RUSSEK, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2024 — vol. 133 iss. 9 art. no. 092301, s. 092301-1-092301-15. — Bibliogr. s. 092301-6-092301-10, Abstr. — Publikacja dostępna online od: 2024-08-26
Autorzy (1058)
Dane bibliometryczne
| ID BaDAP | 155343 |
|---|---|
| Data dodania do BaDAP | 2024-09-18 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevLett.133.092301 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review Letters |
Abstract
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.
