Szczegóły publikacji
Opis bibliograficzny
Non-linear flow modes of identified particles in $Pb-Pb$ collisions at $\sqrt{s_{NN}}=5.02$ TeV / S. Acharya, [et al.], P. J. Konopka, [et al.] // The Journal of High Energy Physics [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1029-8479. — 2020 — iss. 6 art. no. 147, s. [1], 1–47. — Bibliogr. s. 36–40, Abstr. — ALICE Collaboration. — Publikacja dostępna online od: 2020-06-24. — P. J. Konopka - afiliacja: European Organization for Nuclear Research (CERN), Geneva, Switzerland
Autorzy (1009)
- Acharya Shreyasi
- Konopka Piotr
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 133049 |
|---|---|
| Data dodania do BaDAP | 2021-03-16 |
| Tekst źródłowy | URL |
| DOI | 10.1007/JHEP06(2020)147 |
| Rok publikacji | 2020 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | The Journal of High Energy Physics |
Abstract
The pT-differential non-linear flow modes, v4,22, v5,32, v6,33 and v6,222 for π±, K±, KS0 , p + p ¯ , Λ + Λ ¯ and ϕ-meson have been measured for the first time at sNN = 5.02 TeV in Pb-Pb collisions with the ALICE detector at the Large Hadron Collider. The results were obtained with a multi-particle technique, correlating the identified hadrons with reference charged particles from a different pseudorapidity region. These non-linear observables probe the contribution from the second and third order initial spatial anisotropy coefficients to higher flow harmonics. All the characteristic features observed in previous pT-differential anisotropic flow measurements for various particle species are also present in the non-linear flow modes, i.e. increase of magnitude with increasing centrality percentile, mass ordering at low pT and particle type grouping in the intermediate pT range. Hydrodynamical calculations (iEBE-VISHNU) that use different initial conditions and values of shear and bulk viscosity to entropy density ratios are confronted with the data at low transverse momenta. These calculations exhibit a better agreement with the anisotropic flow coefficients than the non-linear flow modes. These observations indicate that non-linear flow modes can provide additional discriminatory power in the study of initial conditions as well as new stringent constraints to hydrodynamical calculations.
