@article{3171338,
    title = "Higher harmonic flow coefficients of identified hadrons in Pb-Pb
collisions at root sNN=2.76 TeV",
    author = "Adam, J. and Adamova, D. and Aggarwal, M. M. and Rinella, G. Aglieri and and Agnello, M. and Agrawal, N. and Ahammed, Z. and Ahmad, S. and Ahn, S. U. and and Aiola, S. and Akindinov, A. and Alam, S. N. and Albuquerque, D. S. and D. and Aleksandrov, D. and Alessandro, B. and Alexandre, D. and Molina, and R. Alfaro and Alici, A. and Alkin, A. and Alme, J. and Alt, T. and and Altinpinar, S. and Altsybeev, I. and Prado, C. Alves Garcia and An, M. and and Andrei, C. and Andrews, H. A. and Andronic, A. and Anguelov, V. and and Anticic, T. and Antinori, F. and Antonioli, P. and Aphecetche, L. and and Appelshauser, H. and Arcelli, S. and Arnaldi, R. and Arnold, O. W. and and Arsene, I. C. and Arslandok, M. and Audurier, B. and Augustinus, A. and and Averbeck, R. and Azmi, M. D. and Badala, A. and Baek, Y. W. and and Bagnasco, S. and Bailhache, R. and Bala, R. and Balasubramanian, S. and and Baldisseri, A. and Baral, R. C. and Barbano, A. 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    journal = "Journal of High Energy Physics",
    year = "2016",
    number = "9",
    publisher = "Springer-Verlag",
    issn = "1126-6708, 1029-8479",
    doi = "10.1007/JHEP09(2016)164",
    keywords = "Hadron-Hadron scattering (experiments)",
    abstract = "The elliptic, triangular, quadrangular and pentagonal anisotropic flow
coefficients for pi(+/-), K-+/- and p+p in Pb-Pb collisions at root sNN
= 2.76TeV were measured with the ALICE detector at the Large Hadron
Collider. The results were obtained with the Scalar Product method,
correlating the identified hadrons with reference particles from a
different pseudorapidity region. Effects not related to the common event
symmetry planes (non-flow) were estimated using correlations in pp
collisions and were subtracted from the measurement. The obtained flow
coefficients exhibit a clear mass ordering for transverse momentum (pT)
values below approximate to 3 GeV/c. In the intermediate pT region (3 <
pT < 6 GeV/c), particles group at an approximate level according to the
number of constituent quarks, suggesting that coalescence might be the
relevant particle production mechanism in this region. The results for
pT < 3 GeV/c are described fairly well by a hydrodynamical model
(iEBE-VISHNU) that uses initial conditions generated by A Multi-Phase
Transport model (AMPT) and describes the expansion of the fireball using
a value of 0.08 for the ratio of shear viscosity to entropy density
(eta/s), coupled to a hadronic cascade model (UrQMD). Finally,
expectations from AMPT alone fail to quantitatively describe the
measurements for all harmonics throughout the measured transverse
momentum region. However, the comparison to the AMPT model highlights
the importance of the late hadronic rescattering stage to the
development of the observed mass ordering at low values of pT and of
coalescence as a particle production mechanism for the particle type
grouping at intermediate values of pT for all harmonics."
}