Non-linear flow modes of identified particles  in Pb-Pb collisions at √sNN = 5.02 TeV

Acharya, S.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Simatović, Goran; ...; Utrobičić, Antonija; ...; Vicković, Linda; ...; Zurlo, N.

doi:10.1007/JHEP06(2020)147

Pregled bibliografske jedinice broj: 1096157

Non-linear flow modes of identified particles in Pb-Pb collisions at √sNN = 5.02 TeV

(ALICE Collaboration) Acharya, S.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ... et al.

Non-linear flow modes of identified particles in Pb-Pb collisions at √sNN = 5.02 TeV // The Journal of high energy physics, 2020 (2020), 06; 147, 48 doi:10.1007/JHEP06(2020)147 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 1096157 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Non-linear flow modes of identified particles in Pb-Pb collisions at √sNN = 5.02 TeV

Autori
Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zurlo, N.

Kolaboracija
ALICE Collaboration

Izvornik
The Journal of high energy physics (1126-6708) 2020 (2020), 06; 147, 48

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
non-linear flow modes ; Pb-Pb collisions

Sažetak
The pT-differential non-linear flow modes, v4, 22, v5, 32, v6, 33 and v6, 222 for π ±, K±, K0 S, 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

Projekti:
HRZZ-IP-2018-01-4108 - Demistificiranje dvočestičnih korelacija u pp sudarima s nadograđenom komorom vremenske projekcije (TPCwithTPC) (Planinić, Mirko, HRZZ - 2018-01) ( CroRIS)

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Filip Erhardt (autor)