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Non-linear flow modes of identified particles in Pb-Pb collisions at sNN \sqrt{s_{\mathrm{NN}}} sNN = 5.02 TeVстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 января 2021 г.
- Авторы: Malinina L., ALICE C.
- Журнал: Journal of High Energy Physics
- Том: 6
- Год издания: 2020
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 147
- DOI: 10.1007/JHEP06(2020)147
- Аннотация: The pT_{T}T-differential non-linear flow modes, v4,22_{4,22}4,22, v5,32_{5,32}5,32, v6,33_{6,33}6,33 and v6,222_{6,222}6,222 for π±^{±}±, K±^{±}±, KS0 {\mathrm{K}}_{\mathrm{S}}^0 KS0 , p + p‾ \overline{\mathrm{p}} p, Λ + Λ‾ \overline{\Lambda} Λ and ϕ-meson have been measured for the first time at sNN \sqrt{s_{\mathrm{NN}}} 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_{T}T-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_{T}T and particle type grouping in the intermediate pT_{T}T 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.[graphic not available: see fulltext]
- Добавил в систему: Малинина Людмила Владимировна