Linear and non-linear flow mode in Pb-Pb collisions at root sNN=2.76 TeV

S. Acharya; D. Adamova; J Adolfsson; MM. Aggarwal; G.A. Rinella; Maria Agnello; N. Agrawal; Z. Ahammed; N Ahmad; S. U. Ahn; S. Aiola; D. Aleksandrov; B. Alessandro; Rafael A. Molina; A. Alici; DSD Albuquerque; SN Alam; J.L.B. Alba; A. Alkin; Ian Bearden; Christian Holm Christensen; Kristjan Herlache Gulbrandsen; Jens Jørgen Gaardhøje; Børge Svane Nielsen; Ante Bilandzic; Marek Chojnacki; Valentina Zaccolo; You Zhou; Christian Alexander Bourjau; Lais Ozelin de Lima Pimentel; Katarina Gajdosova; Vojtech Pacik

doi:10.1016/j.physletb.2017.07.060

Linear and non-linear flow mode in Pb-Pb collisions at root sNN=2.76 TeV

S. Acharya, D. Adamova, J Adolfsson, MM. Aggarwal, G.A. Rinella, Maria Agnello, N. Agrawal, Z. Ahammed, N Ahmad, S. U. Ahn, S. Aiola, D. Aleksandrov, B. Alessandro, Rafael A. Molina, A. Alici, DSD Albuquerque, SN Alam, J.L.B. Alba, A. Alkin, Ian BeardenChristian Holm Christensen, Kristjan Herlache Gulbrandsen, Jens Jørgen Gaardhøje, Børge Svane Nielsen, Ante Bilandzic, Marek Chojnacki, Valentina Zaccolo, You Zhou, Christian Alexander Bourjau, Lais Ozelin de Lima Pimentel, Katarina Gajdosova, Vojtech Pacik

Experimental Particle Physics

29 Citations (Scopus)

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Abstract

The second and the third order anisotropic flow, V₂ and V₃, are mostly determined by the corresponding initial spatial anisotropy coefficients, ε₂ and ε₃, in the initial density distribution. In addition to their dependence on the same order initial anisotropy coefficient, higher order anisotropic flow, V_n (n>3), can also have a significant contribution from lower order initial anisotropy coefficients, which leads to mode-coupling effects. In this Letter we investigate the linear and non-linear modes in higher order anisotropic flow V_n for n=4, 5, 6 with the ALICE detector at the Large Hadron Collider. The measurements are done for particles in the pseudorapidity range |η|<0.8 and the transverse momentum range 0.2<p_T<5.0 GeV/c as a function of collision centrality. The results are compared with theoretical calculations and provide important constraints on the initial conditions, including initial spatial geometry and its fluctuations, as well as the ratio of the shear viscosity to entropy density of the produced system.

Original language	English
Journal	Physics Letters B
Volume	773
Pages (from-to)	68-80
ISSN	0370-2693
DOIs	https://doi.org/10.1016/j.physletb.2017.07.060
Publication status	Published - 10 Oct 2017

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Acharya, S., Adamova, D., Adolfsson, J., Aggarwal, MM., Rinella, G. A., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, N., U. Ahn, S., Aiola, S., Aleksandrov, D., Alessandro, B., Molina, R. A., Alici, A., Albuquerque, DSD., Alam, SN., Alba, J. L. B., Alkin, A., ... Pacik, V. (2017). Linear and non-linear flow mode in Pb-Pb collisions at root sNN=2.76 TeV. Physics Letters B, 773, 68-80. https://doi.org/10.1016/j.physletb.2017.07.060

Acharya, S, Adamova, D, Adolfsson, J, Aggarwal, MM, Rinella, GA, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, N, U. Ahn, S, Aiola, S, Aleksandrov, D, Alessandro, B, Molina, RA, Alici, A, Albuquerque, DSD, Alam, SN, Alba, JLB, Alkin, A, Bearden, I , Christensen, CH , Gulbrandsen, KH , Gaardhøje, JJ , Nielsen, BS, Bilandzic, A, Chojnacki, M, Zaccolo, V, Zhou, Y, Bourjau, CA, Pimentel, LODL, Gajdosova, K & Pacik, V 2017, 'Linear and non-linear flow mode in Pb-Pb collisions at root sNN=2.76 TeV', Physics Letters B, vol. 773, pp. 68-80. https://doi.org/10.1016/j.physletb.2017.07.060

@article{e895c82f4b9c4810a4e01cc5eb0940d6,

title = "Linear and non-linear flow mode in Pb-Pb collisions at root sNN=2.76 TeV",

abstract = "The second and the third order anisotropic flow, V2 and V3, are mostly determined by the corresponding initial spatial anisotropy coefficients, ε2 and ε3, in the initial density distribution. In addition to their dependence on the same order initial anisotropy coefficient, higher order anisotropic flow, Vn (n>3), can also have a significant contribution from lower order initial anisotropy coefficients, which leads to mode-coupling effects. In this Letter we investigate the linear and non-linear modes in higher order anisotropic flow Vn for n=4, 5, 6 with the ALICE detector at the Large Hadron Collider. The measurements are done for particles in the pseudorapidity range |η|<0.8 and the transverse momentum range 0.2<pT<5.0 GeV/c as a function of collision centrality. The results are compared with theoretical calculations and provide important constraints on the initial conditions, including initial spatial geometry and its fluctuations, as well as the ratio of the shear viscosity to entropy density of the produced system.",

author = "S. Acharya and D. Adamova and J Adolfsson and MM. Aggarwal and G.A. Rinella and Maria Agnello and N. Agrawal and Z. Ahammed and N Ahmad and {U. Ahn}, S. and S. Aiola and D. Aleksandrov and B. Alessandro and Molina, {Rafael A.} and A. Alici and DSD Albuquerque and SN Alam and J.L.B. Alba and A. Alkin and Ian Bearden and Christensen, {Christian Holm} and Gulbrandsen, {Kristjan Herlache} and Gaardh{\o}je, {Jens J{\o}rgen} and Nielsen, {B{\o}rge Svane} and Ante Bilandzic and Marek Chojnacki and Valentina Zaccolo and You Zhou and Bourjau, {Christian Alexander} and Pimentel, {Lais Ozelin de Lima} and Katarina Gajdosova and Vojtech Pacik",

year = "2017",

month = oct,

day = "10",

doi = "10.1016/j.physletb.2017.07.060",

language = "English",

volume = "773",

pages = "68--80",

journal = "Physics Letters B: Particle Physics, Nuclear Physics and Cosmology",

issn = "0370-2693",

publisher = "Elsevier",

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TY - JOUR

T1 - Linear and non-linear flow mode in Pb-Pb collisions at root sNN=2.76 TeV

AU - Acharya, S.

AU - Adamova, D.

AU - Adolfsson, J

AU - Aggarwal, MM.

AU - Rinella, G.A.

AU - Agnello, Maria

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, N

AU - U. Ahn, S.

AU - Aiola, S.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Molina, Rafael A.

AU - Alici, A.

AU - Albuquerque, DSD

AU - Alam, SN

AU - Alba, J.L.B.

AU - Alkin, A.

AU - Bearden, Ian

AU - Christensen, Christian Holm

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Nielsen, Børge Svane

AU - Bilandzic, Ante

AU - Chojnacki, Marek

AU - Zaccolo, Valentina

AU - Zhou, You

AU - Bourjau, Christian Alexander

AU - Pimentel, Lais Ozelin de Lima

AU - Gajdosova, Katarina

AU - Pacik, Vojtech

PY - 2017/10/10

Y1 - 2017/10/10

N2 - The second and the third order anisotropic flow, V2 and V3, are mostly determined by the corresponding initial spatial anisotropy coefficients, ε2 and ε3, in the initial density distribution. In addition to their dependence on the same order initial anisotropy coefficient, higher order anisotropic flow, Vn (n>3), can also have a significant contribution from lower order initial anisotropy coefficients, which leads to mode-coupling effects. In this Letter we investigate the linear and non-linear modes in higher order anisotropic flow Vn for n=4, 5, 6 with the ALICE detector at the Large Hadron Collider. The measurements are done for particles in the pseudorapidity range |η|<0.8 and the transverse momentum range 0.2<pT<5.0 GeV/c as a function of collision centrality. The results are compared with theoretical calculations and provide important constraints on the initial conditions, including initial spatial geometry and its fluctuations, as well as the ratio of the shear viscosity to entropy density of the produced system.

AB - The second and the third order anisotropic flow, V2 and V3, are mostly determined by the corresponding initial spatial anisotropy coefficients, ε2 and ε3, in the initial density distribution. In addition to their dependence on the same order initial anisotropy coefficient, higher order anisotropic flow, Vn (n>3), can also have a significant contribution from lower order initial anisotropy coefficients, which leads to mode-coupling effects. In this Letter we investigate the linear and non-linear modes in higher order anisotropic flow Vn for n=4, 5, 6 with the ALICE detector at the Large Hadron Collider. The measurements are done for particles in the pseudorapidity range |η|<0.8 and the transverse momentum range 0.2<pT<5.0 GeV/c as a function of collision centrality. The results are compared with theoretical calculations and provide important constraints on the initial conditions, including initial spatial geometry and its fluctuations, as well as the ratio of the shear viscosity to entropy density of the produced system.

U2 - 10.1016/j.physletb.2017.07.060

DO - 10.1016/j.physletb.2017.07.060

M3 - Journal article

SN - 0370-2693

VL - 773

SP - 68

EP - 80

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

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

ER -

Linear and non-linear flow mode in Pb-Pb collisions at root sNN=2.76 TeV

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