@article{3170370,
    title = "Centrality Dependence of the Charged-Particle Multiplicity Density at
Midrapidity in Pb-Pb Collisions at root(NN)-N-S=5.02 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 Aleksandrov, D. and and Alessandro, B. and Alexandre, D. and Alfaro Molina, R. and Alici, A. and and Alkin, A. and Almaraz, J. R. M. and Alme, J. and Alt, T. and Altinpinar, and S. and Altsybeev, I. and Alves Garcia Prado, C. and Andrei, C. and and Andronic, A. and Anguelov, V. and Anticic, T. and Antinori, F. and and Antonioli, P. and Aphecetche, L. and Appelshaeuser, H. and Arcelli, S. and and Arnaldi, R. and Arnold, O. W. and Arsene, I. C. and Arslandok, M. and and Audurier, B. and Augustinus, A. and Averbeck, R. and Azmi, M. D. and and Badala, A. and Baek, Y. W. and Bagnasco, S. and Bailhache, R. and Bala, and R. and Balasubramanian, S. and Baldisseri, A. and Baral, R. C. and and Barbano, A. M. and Barbera, R. and Barile, F. and Barnafoldi, G. G. and and Barnby, L. 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    journal = "Physical Review and Physical Review Letters Index",
    year = "2016",
    volume = "116",
    number = "22",
    publisher = "AMER PHYSICAL SOC",
    issn = "0094-0003",
    doi = "10.1103/PhysRevLett.116.222302",
    abstract = "The pseudorapidity density of charged particles, dN(ch)=d eta, at
midrapidity in Pb-Pb collisions has been measured at a center-of-mass
energy per nucleon pair of root(NN)-N-s p = 5.02 TeV. For the 5% most
central collisions, we measure a value of 1943 +/- 54. The rise in dNch=
d. as a function of root(NN)-N-s p is steeper than that observed in
proton-proton collisions and follows the trend established by
measurements at lower energy. The increase of dNch= d. as a function of
the average number of participant nucleons, hNparti, calculated in a
Glauber model, is compared with the previous measurement at root(NN)-N-s
p = 2.76 TeV. A constant factor of about 1.2 describes the increase in
dNch= d. from root(NN)-N-s p = 2.76 to 5.02 TeV for all centrality
classes, within the measured range of 0%-80% centrality. The results
are also compared to models based on different mechanisms for particle
production in nuclear collisions."
}