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

Kód výsledku v IS VaVaI

RIV/61389005:_____/19:00502973 - isvavai.cz

Nalezeny alternativní kódy

RIV/68378271:_____/19:00502973

Výsledek na webu

https://doi.org/10.1016/j.nuclphysa.2018.09.020

DOI - Digital Object Identifier

10.1016/j.nuclphysa.2018.09.020

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Physics. A

ISSN

0375-9474

e-ISSN

—

Svazek periodika

982

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

451-454

Kód UT WoS článku

000457515500098

EID výsledku v databázi Scopus

2-s2.0-85060168457