Naslov
Elliptic flow of identified hadrons in small collisional systems measured with ALICE

Autori
Pacík, Vojtěch ; ; … ; Antičić, Tome ; … , Erhardt, Filip ; … ; Gotovac, Sven ; … ; Jerčić, Marko ; … ; Lončar, Petra ; … ; Mudnić, Eugen ; … ; Planinić, Mirko ; … ; Poljak, Nikola ; … ; Utrobičić, Antonija ; … ; Vicković, Linda ; … ; Zou, S.

Kolaboracija
ALICE Collaboration

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2018, Nuclear Physics A, vol. 982 / Antinori, Federico ; Dainese, Andrea ; Giubellino, Paolo ; Greco, Vincenzo ; Lombardo, Maria Paola ; Scomparin, Enrico - : Elsevier, 2019, 451-454

Skup
27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2018)

Mjesto i datum
Venecija, Italija, 13.05.2018. - 19.05.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
anisotropic azimuthal correlations ; elliptic flow ; pT-differential ; identified particles ; small systems ; p–Pb ; ALICE ; LHC

Sažetak
Recent observations of long-range multi-particle azimuthal correlations in p-Pb and high multiplicity pp collisions provided new insights into collision dynamics and opened a possibility to study collective effects in these small systems. New measurements of p(T)-differential elliptic flow (v(2)) coefficient for inclusive charged hadrons as well as a variety of identified particle species in p-Pb collisions at root s(NN) = 5.02 TeV are presented. The data was collected by ALICE during the LHC Run 2 data taking. Besides high precision measurements of v(2)(P-T) for pi(+/-), K-+/- and p((p) over bar), the first results for K-s(0), Lambda((Lambda) over bar) and phi are shown. In order to eliminate non-flow contamination, a pseudorapidity separation between correlated particles is applied as well as subtraction of remaining non-flow estimate based on a measurement of minimum-bias pp collisions at root s = 13 TeV. Moreover, the reported characteristic mass ordering and approximate number of constituent quarks (NCQ) and transverse kinetic energy (KET) scaling of v(2) allow to test various theoretical models, constrain the initial conditions, and probe the origin of collective behavior in small collision systems.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA