J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV

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

doi:10.1103/PhysRevLett.111.162301

J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV

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

Experimental Particle Physics

61 Citations (Scopus)

Abstract

We report on the first measurement of inclusive J/ψ elliptic flow v₂ in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at √s_NN=2.76 TeV in the rapidity range 2.5<y<4.0. The dependence of the J/ψ v₂ on the collision centrality and on the J/ψ transverse momentum is studied in the range 0≤p_T<10 GeV/c. For semicentral Pb-Pb collisions at √s_NN=2.76 TeV, an indication of nonzero v₂ is observed with a largest measured value of v₂=0.116±0.046(stat) ±0.029(syst) for J/ψ in the transverse momentum range 2≤p _T<4 GeV/c. The elliptic flow measurement complements the previously reported ALICE results on the inclusive J/ψ nuclear modification factor and favors the scenario of a significant fraction of J/ψ production from charm quarks in a deconfined partonic phase.

Original language	English
Article number	162301
Journal	Physical Review Letters
Volume	111
Issue number	16
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.111.162301
Publication status	Published - 17 Oct 2013

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Abbas, E., Abelev, B., Adam, J., Adamova, D., Adare, A. M., Bearden, I., Bøggild, H., Christensen, C. H., Gulbrandsen, K. H., Gaardhøje, J. J., Dalsgaard, H. H., Hansen, A. C., Bilandzic, A., Nielsen, B. S., Nygaard, C., & Søgaard, C. (2013). J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV. Physical Review Letters, 111(16), [162301]. https://doi.org/10.1103/PhysRevLett.111.162301

Abbas, E, Abelev, B, Adam, J, Adamova, D, Adare, AM, Bearden, I , Bøggild, H , Christensen, CH , Gulbrandsen, KH , Gaardhøje, JJ, Dalsgaard, HH, Hansen, AC, Bilandzic, A, Nielsen, BS, Nygaard, C & Søgaard, C 2013, 'J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV', Physical Review Letters, vol. 111, no. 16, 162301. https://doi.org/10.1103/PhysRevLett.111.162301

@article{425da65887c94d53973444da8f08c236,

title = "J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV",

abstract = "We report on the first measurement of inclusive J/ψ elliptic flow v2 in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at √sNN=2.76 TeV in the rapidity range 2.52 on the collision centrality and on the J/ψ transverse momentum is studied in the range 0≤pT<10 GeV/c. For semicentral Pb-Pb collisions at √sNN=2.76 TeV, an indication of nonzero v2 is observed with a largest measured value of v2=0.116±0.046(stat) ±0.029(syst) for J/ψ in the transverse momentum range 2≤p T<4 GeV/c. The elliptic flow measurement complements the previously reported ALICE results on the inclusive J/ψ nuclear modification factor and favors the scenario of a significant fraction of J/ψ production from charm quarks in a deconfined partonic phase.",

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

year = "2013",

month = oct,

day = "17",

doi = "10.1103/PhysRevLett.111.162301",

language = "English",

volume = "111",

journal = "Physical Review Letters",

issn = "0031-9007",

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T1 - J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV

AU - Abbas, E.

AU - Abelev, B.

AU - Adam, J.

AU - Adamova, D.

AU - Adare, A.M.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Dalsgaard, Hans Hjersing

AU - Hansen, Alexander Colliander

AU - Bilandzic, Ante

AU - Nielsen, Børge Svane

AU - Nygaard, Casper

AU - Søgaard, Carsten

PY - 2013/10/17

Y1 - 2013/10/17

N2 - We report on the first measurement of inclusive J/ψ elliptic flow v2 in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at √sNN=2.76 TeV in the rapidity range 2.52 on the collision centrality and on the J/ψ transverse momentum is studied in the range 0≤pT<10 GeV/c. For semicentral Pb-Pb collisions at √sNN=2.76 TeV, an indication of nonzero v2 is observed with a largest measured value of v2=0.116±0.046(stat) ±0.029(syst) for J/ψ in the transverse momentum range 2≤p T<4 GeV/c. The elliptic flow measurement complements the previously reported ALICE results on the inclusive J/ψ nuclear modification factor and favors the scenario of a significant fraction of J/ψ production from charm quarks in a deconfined partonic phase.

AB - We report on the first measurement of inclusive J/ψ elliptic flow v2 in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at √sNN=2.76 TeV in the rapidity range 2.52 on the collision centrality and on the J/ψ transverse momentum is studied in the range 0≤pT<10 GeV/c. For semicentral Pb-Pb collisions at √sNN=2.76 TeV, an indication of nonzero v2 is observed with a largest measured value of v2=0.116±0.046(stat) ±0.029(syst) for J/ψ in the transverse momentum range 2≤p T<4 GeV/c. The elliptic flow measurement complements the previously reported ALICE results on the inclusive J/ψ nuclear modification factor and favors the scenario of a significant fraction of J/ψ production from charm quarks in a deconfined partonic phase.

U2 - 10.1103/PhysRevLett.111.162301

DO - 10.1103/PhysRevLett.111.162301

M3 - Journal article

C2 - 24182258

SN - 0031-9007

VL - 111

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 162301

ER -

J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV

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