Non-linear flow modes of identified particles in Pb-Pb collisions at √sNN = 5.02 TeV

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Non-linear flow modes of identified particles in Pb-Pb collisions at √sNN = 5.02 TeV. / ALICE Collaboration.

In: Journal of High Energy Physics, Vol. 2020, No. 6, 147, 24.06.2020.

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ALICE Collaboration. / Non-linear flow modes of identified particles in Pb-Pb collisions at √sNN = 5.02 TeV. In: Journal of High Energy Physics. 2020 ; Vol. 2020, No. 6.

BibTeX

@article{a275589fa53d43019be857e93585c17b,

title = "Non-linear flow modes of identified particles in Pb-Pb collisions at √sNN = 5.02 TeV",

abstract = "The pT-differential non-linear flow modes, v4,22, v5,32, v6,33 and v6,222 for π±, K±, KS0 , p + p ¯ , Λ + Λ ¯ and ϕ-meson have been measured for the first time at sNN = 5.02 TeV in Pb-Pb collisions with the ALICE detector at the Large Hadron Collider. The results were obtained with a multi-particle technique, correlating the identified hadrons with reference charged particles from a different pseudorapidity region. These non-linear observables probe the contribution from the second and third order initial spatial anisotropy coefficients to higher flow harmonics. All the characteristic features observed in previous pT-differential anisotropic flow measurements for various particle species are also present in the non-linear flow modes, i.e. increase of magnitude with increasing centrality percentile, mass ordering at low pT and particle type grouping in the intermediate pT range. Hydrodynamical calculations (iEBE-VISHNU) that use different initial conditions and values of shear and bulk viscosity to entropy density ratios are confronted with the data at low transverse momenta. These calculations exhibit a better agreement with the anisotropic flow coefficients than the non-linear flow modes. These observations indicate that non-linear flow modes can provide additional discriminatory power in the study of initial conditions as well as new stringent constraints to hydrodynamical calculations. [Figure not available: see fulltext.].",

keywords = "Heavy Ion Experiments, TRANSVERSE-MOMENTUM, ANISOTROPIC FLOW, ELLIPTIC FLOW, FLUCTUATIONS, PSEUDORAPIDITY, DEPENDENCE",

author = "{ALICE Collaboration} and S. Acharya and D. Adamov{\'a} and A. Adler and J. Adolfsson and Aggarwal, {M. M.} and {Aglieri Rinella}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, {S. U.} and A. Akindinov and M. Al-Turany and Alam, {S. N.} and Albuquerque, {D. S.D.} and D. Aleksandrov and B. Alessandro and Alfanda, {H. M.} and {Alfaro Molina}, R. and B. Ali and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and Anaam, {M. N.} and C. Andrei and D. Andreou and Andrews, {H. A.} and A. Andronic and M. Angeletti and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and R. Anwar and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and A. Erokhin and G. Feofilov and V. Kovalenko and T. Lazareva and D. Nesterov and V. Vechernin and A. Zarochentsev and V. Zherebchevskii",

year = "2020",

month = jun,

day = "24",

doi = "10.1007/JHEP06(2020)147",

language = "English",

volume = "2020",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Nature",

number = "6",

}

RIS

TY - JOUR

T1 - Non-linear flow modes of identified particles in Pb-Pb collisions at √sNN = 5.02 TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anwar, R.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Erokhin, A.

AU - Feofilov, G.

AU - Kovalenko, V.

AU - Lazareva, T.

AU - Nesterov, D.

AU - Vechernin, V.

AU - Zarochentsev, A.

AU - Zherebchevskii, V.

PY - 2020/6/24

Y1 - 2020/6/24

N2 - The pT-differential non-linear flow modes, v4,22, v5,32, v6,33 and v6,222 for π±, K±, KS0 , p + p ¯ , Λ + Λ ¯ and ϕ-meson have been measured for the first time at sNN = 5.02 TeV in Pb-Pb collisions with the ALICE detector at the Large Hadron Collider. The results were obtained with a multi-particle technique, correlating the identified hadrons with reference charged particles from a different pseudorapidity region. These non-linear observables probe the contribution from the second and third order initial spatial anisotropy coefficients to higher flow harmonics. All the characteristic features observed in previous pT-differential anisotropic flow measurements for various particle species are also present in the non-linear flow modes, i.e. increase of magnitude with increasing centrality percentile, mass ordering at low pT and particle type grouping in the intermediate pT range. Hydrodynamical calculations (iEBE-VISHNU) that use different initial conditions and values of shear and bulk viscosity to entropy density ratios are confronted with the data at low transverse momenta. These calculations exhibit a better agreement with the anisotropic flow coefficients than the non-linear flow modes. These observations indicate that non-linear flow modes can provide additional discriminatory power in the study of initial conditions as well as new stringent constraints to hydrodynamical calculations. [Figure not available: see fulltext.].

AB - The pT-differential non-linear flow modes, v4,22, v5,32, v6,33 and v6,222 for π±, K±, KS0 , p + p ¯ , Λ + Λ ¯ and ϕ-meson have been measured for the first time at sNN = 5.02 TeV in Pb-Pb collisions with the ALICE detector at the Large Hadron Collider. The results were obtained with a multi-particle technique, correlating the identified hadrons with reference charged particles from a different pseudorapidity region. These non-linear observables probe the contribution from the second and third order initial spatial anisotropy coefficients to higher flow harmonics. All the characteristic features observed in previous pT-differential anisotropic flow measurements for various particle species are also present in the non-linear flow modes, i.e. increase of magnitude with increasing centrality percentile, mass ordering at low pT and particle type grouping in the intermediate pT range. Hydrodynamical calculations (iEBE-VISHNU) that use different initial conditions and values of shear and bulk viscosity to entropy density ratios are confronted with the data at low transverse momenta. These calculations exhibit a better agreement with the anisotropic flow coefficients than the non-linear flow modes. These observations indicate that non-linear flow modes can provide additional discriminatory power in the study of initial conditions as well as new stringent constraints to hydrodynamical calculations. [Figure not available: see fulltext.].

KW - Heavy Ion Experiments

KW - TRANSVERSE-MOMENTUM

KW - ANISOTROPIC FLOW

KW - ELLIPTIC FLOW

KW - FLUCTUATIONS

KW - PSEUDORAPIDITY

KW - DEPENDENCE

UR - http://www.scopus.com/inward/record.url?scp=85087044807&partnerID=8YFLogxK

U2 - 10.1007/JHEP06(2020)147

DO - 10.1007/JHEP06(2020)147

M3 - Article

AN - SCOPUS:85087044807

VL - 2020

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 6

M1 - 147

ER -

ID: 61383985