Szczegóły publikacji
Opis bibliograficzny
Global $\Lambda$-hyperon polarization in Au+Au collisions at $\sqrt{s_{NN}}$=3 GeV / M. S. Abdallah, [et al.], L. ADAMCZYK, [et al.], L. FULEK, [et al.], M. PRZYBYCIEŃ, [et al.], R. SIKORA, [et al.] // Physical Review. C ; ISSN 2469-9985. — Tytuł poprz.: Physical Review. C, Nuclear Physics ; ISSN: 0556-2813. — 2021 — vol. 104 iss. 6 art. no. L061901, s. L061901-1–L061901-8. — Bibliogr. s. L061901-7–L061901-8. — Publikacja dostępna online od: 2021-12-21
Autorzy (387)
Dane bibliometryczne
| ID BaDAP | 139269 |
|---|---|
| Data dodania do BaDAP | 2022-03-01 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevC.104.L061901 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, C |
Abstract
Global hyperon polarization, (P) over barH, in Au + Au collisions over a large range of collision energy, root S-NN, was recently measured and successfully reproduced by hydrodynamic and transport models with intense fluid vorticity of the quark-gluon plasma. While naive extrapolation of data trends suggests a large (P) over barH as the collision energy is reduced, the behavior of (P) over barH at small root S-NN < 7.7 GeV is unknown. Operating the STAR experiment in fixed-target mode, we measured the polarization of Lambda hyperons along the direction of global angular momentum in Au + Au collisions at root S-NN = 3 GeV. The observation of substantial polarization of 4.91 +/- 0.81(stat.) +/- 0.15(syst.)% in these collisions may require a reexamination of the viscosity of any fluid created in the collision, of the thermalization timescale of rotational modes, and of hadronic mechanisms to produce global polarization.
