Measurement of the azimuthal anisotropy for charged particle production in sqrt{sNN} = 2.76 TeV lead-lead collisions with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00389761" target="_blank" >RIV/68378271:_____/12:00389761 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevC.86.014907" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.86.014907</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.86.014907" target="_blank" >10.1103/PhysRevC.86.014907</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the azimuthal anisotropy for charged particle production in sqrt{sNN} = 2.76 TeV lead-lead collisions with the ATLAS detector

Popis výsledku v původním jazyce

Differential measurements of charged particle azimuthal anisotropy are presented for lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector at the LHC, based on an integrated luminosity of approximately 8 mb^-1. A Fourier analysis of the charged particle pair distribution in relative azimuthal angle (Dphi=phi_a-phi_b) is performed to extract the coefficients v_{n,n}=< cos (n Dphi)>. For pairs of charged particles with a large pseudorapidity gap (|Deta=eta_a-eta_b|>2) and one particle withpT<3 GeV, the v_{2,2}-v_{6,6} values are found to factorize as v_{n,n}(pT^a,pT^b) v_n(pT^a)v_n(pT^b) in central and mid-central events. A detailed study shows that the v_{1,1}(pT^a,pT^b) data are consistent with the combined contributions from a rapidity-even v_1 and global momentum conservation. The extracted v_1 is observed to cross zero at pT/sim1.0 GeV, reaches a maximum at 4-5 GeV with a value comparable to that for v_3, and decreases at higher pT.

Název v anglickém jazyce

Measurement of the azimuthal anisotropy for charged particle production in sqrt{sNN} = 2.76 TeV lead-lead collisions with the ATLAS detector

Popis výsledku anglicky

Differential measurements of charged particle azimuthal anisotropy are presented for lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector at the LHC, based on an integrated luminosity of approximately 8 mb^-1. A Fourier analysis of the charged particle pair distribution in relative azimuthal angle (Dphi=phi_a-phi_b) is performed to extract the coefficients v_{n,n}=< cos (n Dphi)>. For pairs of charged particles with a large pseudorapidity gap (|Deta=eta_a-eta_b|>2) and one particle withpT<3 GeV, the v_{2,2}-v_{6,6} values are found to factorize as v_{n,n}(pT^a,pT^b) v_n(pT^a)v_n(pT^b) in central and mid-central events. A detailed study shows that the v_{1,1}(pT^a,pT^b) data are consistent with the combined contributions from a rapidity-even v_1 and global momentum conservation. The extracted v_1 is observed to cross zero at pT/sim1.0 GeV, reaches a maximum at 4-5 GeV with a value comparable to that for v_3, and decreases at higher pT.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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Projekt

<a href="/cs/project/LA08032" target="_blank" >LA08032: Mezinárodní experiment ATLAS-CERN</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Physical Review. C

ISSN

0556-2813

e-ISSN

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Svazek periodika

86

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

47

Strana od-do

"014907-1"-"014907-47"

Kód UT WoS článku

000306689500001

EID výsledku v databázi Scopus

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