Measurements of azimuthal anisotropies at forward and backward rapidity with muons in high-multiplicity p-Pb collisions at √sNN=8.16 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00579699" target="_blank" >RIV/61389005:_____/23:00579699 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/23:00579699

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2023.137782" target="_blank" >https://doi.org/10.1016/j.physletb.2023.137782</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2023.137782" target="_blank" >10.1016/j.physletb.2023.137782</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurements of azimuthal anisotropies at forward and backward rapidity with muons in high-multiplicity p-Pb collisions at √sNN=8.16 TeV

Popis výsledku v původním jazyce

The study of the azimuthal anisotropy of inclusive muons produced in p-Pb collisions at root sNN = 8.16 TeV, using the ALICE detector at the LHC is reported. The measurement of the second-order Fourier coefficient of the particle azimuthal distribution, v2, is performed as a function of transverse momentum pT in the 0-20% high-multiplicity interval at both forward (2.03 < yCMS < 3.53) and backward (-4.46 < yCMS < -2.96) rapidities over a wide pT range, 0.5 < pT 10 GeV/c, in which a dominant contribution of muons from heavy-flavour hadron decays is expected at pT 2 GeV/c. The v2 coefficient of inclusive muons is extracted using two different techniques, namely two-particle cumulants, used for the first time for heavy-flavour measurements, and forward-central two-particle correlations. Both techniques give compatible results. A positive v2 is measured at both forward and backward rapidities with a significance larger than 4.7 and 7.6 sigma, respectively, in the interval 2 < pT < 6 GeV/c. Comparisons with previous measurements in p-Pb collisions at root sNN = 5.02 TeV, and with AMPT and CGC-based theoretical calculations are discussed. The findings impose new constraints on the theoretical interpretations of the origin of the collective behaviour in small collision systems.

Název v anglickém jazyce

Measurements of azimuthal anisotropies at forward and backward rapidity with muons in high-multiplicity p-Pb collisions at √sNN=8.16 TeV

Popis výsledku anglicky

The study of the azimuthal anisotropy of inclusive muons produced in p-Pb collisions at root sNN = 8.16 TeV, using the ALICE detector at the LHC is reported. The measurement of the second-order Fourier coefficient of the particle azimuthal distribution, v2, is performed as a function of transverse momentum pT in the 0-20% high-multiplicity interval at both forward (2.03 < yCMS < 3.53) and backward (-4.46 < yCMS < -2.96) rapidities over a wide pT range, 0.5 < pT 10 GeV/c, in which a dominant contribution of muons from heavy-flavour hadron decays is expected at pT 2 GeV/c. The v2 coefficient of inclusive muons is extracted using two different techniques, namely two-particle cumulants, used for the first time for heavy-flavour measurements, and forward-central two-particle correlations. Both techniques give compatible results. A positive v2 is measured at both forward and backward rapidities with a significance larger than 4.7 and 7.6 sigma, respectively, in the interval 2 < pT < 6 GeV/c. Comparisons with previous measurements in p-Pb collisions at root sNN = 5.02 TeV, and with AMPT and CGC-based theoretical calculations are discussed. The findings impose new constraints on the theoretical interpretations of the origin of the collective behaviour 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

2023

Kód důvěrnosti údajů

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

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

846

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

20

Strana od-do

137782

Kód UT WoS článku

001088286800001

EID výsledku v databázi Scopus

2-s2.0-85172706094