Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at root S-NN=2.76 TeV

B. Abelev; J. Adam; D. Adamova; A.M. Adare; M.M. Aggarwal; Ian Bearden; Hans Bøggild; Christian Holm Christensen; Hans Hjersing Dalsgaard; Ante Bilandzic; Kristjan Herlache Gulbrandsen; Jens Jørgen Gaardhøje; Alexander Colliander Hansen; Børge Svane Nielsen; Casper Nygaard

doi:10.1016/j.physletb.2012.12.066

Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at root S-NN=2.76 TeV

B. Abelev, J. Adam, D. Adamova, A.M. Adare, M.M. Aggarwal, Ian Bearden, Hans Bøggild, Christian Holm Christensen, Hans Hjersing Dalsgaard, Ante Bilandzic, Kristjan Herlache Gulbrandsen, Jens Jørgen Gaardhøje, Alexander Colliander Hansen, Børge Svane Nielsen, Casper Nygaard

Experimental Particle Physics

136 Citations (Scopus)

Abstract

The elliptic, v2, triangular, v3, and quadrangular, v4, azimuthal anisotropic flow coefficients are measured for unidentified charged particles, pions, and (anti-)protons in Pb-Pb collisions at sNN=2.76TeV with the ALICE detector at the Large Hadron Collider. Results obtained with the event plane and four-particle cumulant methods are reported for the pseudo-rapidity range |η|<0.8 at different collision centralities and as a function of transverse momentum, p_T, out to p_T=20GeV/c. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for p_T>8GeV/c. The small p_T dependence of the difference between elliptic flow results obtained from the event plane and four-particle cumulant methods suggests a common origin of flow fluctuations up to p_T=8GeV/c. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least p_T=8GeV/c indicating that the particle type dependence persists out to high p_T.

Original language	English
Journal	Physics Letters B
Volume	719
Issue number	1-3
Pages (from-to)	18-28
ISSN	0370-2693
DOIs	https://doi.org/10.1016/j.physletb.2012.12.066
Publication status	Published - 12 Feb 2013

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Abelev, B., Adam, J., Adamova, D., Adare, A. M., Aggarwal, M. M., Bearden, I., Bøggild, H., Christensen, C. H., Dalsgaard, H. H., Bilandzic, A., Gulbrandsen, K. H., Gaardhøje, J. J., Hansen, A. C., Nielsen, B. S., & Nygaard, C. (2013). Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at root S-NN=2.76 TeV. Physics Letters B, 719(1-3), 18-28. https://doi.org/10.1016/j.physletb.2012.12.066

Abelev, B, Adam, J, Adamova, D, Adare, AM, Aggarwal, MM, Bearden, I , Bøggild, H , Christensen, CH, Dalsgaard, HH, Bilandzic, A, Gulbrandsen, KH , Gaardhøje, JJ, Hansen, AC, Nielsen, BS & Nygaard, C 2013, 'Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at root S-NN=2.76 TeV', Physics Letters B, vol. 719, no. 1-3, pp. 18-28. https://doi.org/10.1016/j.physletb.2012.12.066

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title = "Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at root S-NN=2.76 TeV",

abstract = "The elliptic, v2, triangular, v3, and quadrangular, v4, azimuthal anisotropic flow coefficients are measured for unidentified charged particles, pions, and (anti-)protons in Pb-Pb collisions at sNN=2.76TeV with the ALICE detector at the Large Hadron Collider. Results obtained with the event plane and four-particle cumulant methods are reported for the pseudo-rapidity range |η|<0.8 at different collision centralities and as a function of transverse momentum, pT, out to pT=20GeV/c. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for pT>8GeV/c. The small pT dependence of the difference between elliptic flow results obtained from the event plane and four-particle cumulant methods suggests a common origin of flow fluctuations up to pT=8GeV/c. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least pT=8GeV/c indicating that the particle type dependence persists out to high pT.",

author = "B. Abelev and J. Adam and D. Adamova and A.M. Adare and M.M. Aggarwal and Ian Bearden and Hans B{\o}ggild and Christensen, {Christian Holm} and Dalsgaard, {Hans Hjersing} and Ante Bilandzic and Gulbrandsen, {Kristjan Herlache} and Gaardh{\o}je, {Jens J{\o}rgen} and Hansen, {Alexander Colliander} and Nielsen, {B{\o}rge Svane} and Casper Nygaard",

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day = "12",

doi = "10.1016/j.physletb.2012.12.066",

language = "English",

volume = "719",

pages = "18--28",

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T1 - Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at root S-NN=2.76 TeV

AU - Abelev, B.

AU - Adam, J.

AU - Adamova, D.

AU - Adare, A.M.

AU - Aggarwal, M.M.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Dalsgaard, Hans Hjersing

AU - Bilandzic, Ante

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Hansen, Alexander Colliander

AU - Nielsen, Børge Svane

AU - Nygaard, Casper

PY - 2013/2/12

Y1 - 2013/2/12

N2 - The elliptic, v2, triangular, v3, and quadrangular, v4, azimuthal anisotropic flow coefficients are measured for unidentified charged particles, pions, and (anti-)protons in Pb-Pb collisions at sNN=2.76TeV with the ALICE detector at the Large Hadron Collider. Results obtained with the event plane and four-particle cumulant methods are reported for the pseudo-rapidity range |η|<0.8 at different collision centralities and as a function of transverse momentum, pT, out to pT=20GeV/c. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for pT>8GeV/c. The small pT dependence of the difference between elliptic flow results obtained from the event plane and four-particle cumulant methods suggests a common origin of flow fluctuations up to pT=8GeV/c. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least pT=8GeV/c indicating that the particle type dependence persists out to high pT.

AB - The elliptic, v2, triangular, v3, and quadrangular, v4, azimuthal anisotropic flow coefficients are measured for unidentified charged particles, pions, and (anti-)protons in Pb-Pb collisions at sNN=2.76TeV with the ALICE detector at the Large Hadron Collider. Results obtained with the event plane and four-particle cumulant methods are reported for the pseudo-rapidity range |η|<0.8 at different collision centralities and as a function of transverse momentum, pT, out to pT=20GeV/c. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for pT>8GeV/c. The small pT dependence of the difference between elliptic flow results obtained from the event plane and four-particle cumulant methods suggests a common origin of flow fluctuations up to pT=8GeV/c. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least pT=8GeV/c indicating that the particle type dependence persists out to high pT.

U2 - 10.1016/j.physletb.2012.12.066

DO - 10.1016/j.physletb.2012.12.066

M3 - Journal article

SN - 0370-2693

VL - 719

SP - 18

EP - 28

JO - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

JF - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

IS - 1-3

ER -

Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at root S-NN=2.76 TeV

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