Azimuthal anisotropy of jet particles in p-Pb and Pb-Pb collisions at √sNN = 5.02 TeV
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00603073" target="_blank" >RIV/68378271:_____/24:00603073 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61389005:_____/24:00603073
Výsledek na webu
<a href="https://doi.org/10.1007/JHEP08(2024)234" target="_blank" >https://doi.org/10.1007/JHEP08(2024)234</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP08(2024)234" target="_blank" >10.1007/JHEP08(2024)234</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Azimuthal anisotropy of jet particles in p-Pb and Pb-Pb collisions at √sNN = 5.02 TeV
Popis výsledku v původním jazyce
The azimuthal anisotropy of particles associated with jets (jet particles) at midrapidity is measured for the first time in p-Pb and Pb-Pb collisions at root sNN = 5.02 TeV down to transverse momentum (p(T)) of 0.5 GeV/c and 2 GeV/c, respectively, with ALICE. The results obtained in p-Pb collisions are based on a novel three-particle correlation technique. The azimuthal anisotropy coefficient v(2) in high-multiplicity p-Pb collisions is positive, with a significance reaching 6.8 sigma at low p(T), and its magnitude is smaller than in semicentral Pb-Pb collisions. In contrast to the measurements in Pb-Pb collisions, the v(2) coefficient is also found independent of p(T) within uncertainties. Comparisons with the inclusive charged-particle v(2) and with AMPT calculations are discussed. The predictions suggest that parton interactions play an important role in generating a non-zero jet-particle v(2) in p-Pb collisions, even though they overestimate the reported measurement. These observations shed new insights on the understanding of the origin of the collective behaviour of jet particles in small systems such as p-Pb collisions, and provide significant stringent new constraints to models.
Název v anglickém jazyce
Azimuthal anisotropy of jet particles in p-Pb and Pb-Pb collisions at √sNN = 5.02 TeV
Popis výsledku anglicky
The azimuthal anisotropy of particles associated with jets (jet particles) at midrapidity is measured for the first time in p-Pb and Pb-Pb collisions at root sNN = 5.02 TeV down to transverse momentum (p(T)) of 0.5 GeV/c and 2 GeV/c, respectively, with ALICE. The results obtained in p-Pb collisions are based on a novel three-particle correlation technique. The azimuthal anisotropy coefficient v(2) in high-multiplicity p-Pb collisions is positive, with a significance reaching 6.8 sigma at low p(T), and its magnitude is smaller than in semicentral Pb-Pb collisions. In contrast to the measurements in Pb-Pb collisions, the v(2) coefficient is also found independent of p(T) within uncertainties. Comparisons with the inclusive charged-particle v(2) and with AMPT calculations are discussed. The predictions suggest that parton interactions play an important role in generating a non-zero jet-particle v(2) in p-Pb collisions, even though they overestimate the reported measurement. These observations shed new insights on the understanding of the origin of the collective behaviour of jet particles in small systems such as p-Pb collisions, and provide significant stringent new constraints to models.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10303 - Particles and field physics
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
1029-8479
Svazek periodika
2024
Číslo periodika v rámci svazku
8
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
28
Strana od-do
234
Kód UT WoS článku
001355891500002
EID výsledku v databázi Scopus
2-s2.0-85202924771