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

Lee Stuart Barnby; David Evans; Luke Hanratty; Peter Jones; Anton Jusko; Ravjeet Kour; Marian Krivda; Cristina Lazzeroni; Graham Lee; Roman Lietava; Zoe Matthews; Sparsh Navin; Plamen Petrov; Arvinder Palaha; Patrick Scott; Orlando Villalobos Baillie

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 √s_NN = 2.76 TeV

Lee Stuart Barnby, David Evans, Luke Hanratty, Peter Jones, Anton Jusko, Ravjeet Kour, Marian Krivda, Cristina Lazzeroni, Graham Lee, Roman Lietava, Zoe Matthews, Sparsh Navin, Plamen Petrov, Arvinder Palaha, Patrick Scott, Orlando Villalobos Baillie

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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 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=20 GeV/c. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for p_T>8 GeV/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=8 GeV/c. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least p_T=8 GeV/c indicating that the particle type dependence persists out to high p_T.

Original language	English
Pages (from-to)	18-28
Journal	Physics Letters B
Volume	719
Issue number	1-3
Early online date	4 Jan 2013
DOIs	https://doi.org/10.1016/j.physletb.2012.12.066
Publication status	Published - 12 Feb 2013

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2012.12.066

Birmingham Nuclear Physics Consolidated Grant
Freer, M. (Principal Investigator), Evans, P. (Co-Investigator), Jones, P. (Co-Investigator), Wheldon, C. (Co-Investigator) & Lazzeroni, C. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/11 → 31/07/14
Project: Research Councils

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Barnby, L. S., Evans, D., Hanratty, L., Jones, P., Jusko, A., Kour, R., Krivda, M., Lazzeroni, C., Lee, G., Lietava, R., Matthews, Z., Navin, S., Petrov, P., Palaha, A., Scott, P., & Villalobos Baillie, O. (2013). Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb–Pb collisions at √s_NN = 2.76 TeV. Physics Letters B, 719(1-3), 18-28. https://doi.org/10.1016/j.physletb.2012.12.066

@article{80557d3b7f3844c892017e42b5e010f5,

title = "Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb–Pb collisions at √sNN = 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 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=20 GeV/c. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for pT>8 GeV/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=8 GeV/c. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least pT=8 GeV/c indicating that the particle type dependence persists out to high pT.",

author = "Barnby, {Lee Stuart} and David Evans and Luke Hanratty and Peter Jones and Anton Jusko and Ravjeet Kour and Marian Krivda and Cristina Lazzeroni and Graham Lee and Roman Lietava and Zoe Matthews and Sparsh Navin and Plamen Petrov and Arvinder Palaha and Patrick Scott and {Villalobos Baillie}, Orlando",

year = "2013",

month = feb,

day = "12",

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

language = "English",

volume = "719",

pages = "18--28",

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Barnby, LS, Evans, D, Hanratty, L, Jones, P, Jusko, A, Kour, R, Krivda, M, Lazzeroni, C, Lee, G, Lietava, R, Matthews, Z, Navin, S, Petrov, P, Palaha, A, Scott, P & Villalobos Baillie, O 2013, 'Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb–Pb collisions at √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

TY - JOUR

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

AU - Barnby, Lee Stuart

AU - Evans, David

AU - Hanratty, Luke

AU - Jones, Peter

AU - Jusko, Anton

AU - Kour, Ravjeet

AU - Krivda, Marian

AU - Lazzeroni, Cristina

AU - Lee, Graham

AU - Lietava, Roman

AU - Matthews, Zoe

AU - Navin, Sparsh

AU - Petrov, Plamen

AU - Palaha, Arvinder

AU - Scott, Patrick

AU - Villalobos Baillie, Orlando

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 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=20 GeV/c. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for pT>8 GeV/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=8 GeV/c. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least pT=8 GeV/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 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=20 GeV/c. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for pT>8 GeV/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=8 GeV/c. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least pT=8 GeV/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 - Article

SN - 0370-2693

VL - 719

SP - 18

EP - 28

JO - Physics Letters B

JF - Physics Letters B

IS - 1-3

ER -

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

Abstract

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Birmingham Nuclear Physics Consolidated Grant

Cite this

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