Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at √<i><SUP>S</SUP>NN</i>=5.02 TeV

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Adam, J, Adamova, D, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Aiola, S et al (show 982 more authors) , Akindinov, A, Alam, SN, Aleksandrov, D, Alessandro, B, Alexandre, D, Alfaro Molina, R, Alici, A, Alkin, A, Almaraz, JRM, Alme, J, Alt, T, Altinpinar, S, Altsybeev, I, Alves Garcia Prado, C, Andrei, C, Andronic, A, Anguelov, V, Anticic, T, Antinori, F, Antonioli, P, Aphecetche, L, Appelshaeuser, H, Arcelli, S, Arnaldi, R, Arnold, OW, Arsene, IC, Arslandok, M, Audurier, B, Augustinus, A, Averbeck, R, Azmi, MD, Badala, A, Baek, YW, Bagnasco, S, Bailhache, R, Bala, R, Balasubramanian, S, Baldisseri, A, Baral, RC, Barbano, AM, Barbera, R, Barile, F, Barnafoldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartke, J, Bartsch, E, Basile, M, Bastid, N, Basu, S, Bathen, B, Batigne, G, Camejo, A Batista, Batyunya, B, Batzing, PC, Bearden, IG, Beck, H, Bedda, C, Behera, NK, Belikov, I, Bellini, F, Bello Martinez, H, Bellwied, R, Belmont, R, 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Westerhoff, U, Whitehead, AM, Wiechula, J, Wikne, J, Wilk, G, Wilkinson, J, Williams, MCS, Windelband, B, Winn, M, Yang, H, Yang, P, Yano, S, Yasar, C, Yin, Z, Yokoyama, H, Yoo, I-K, Yoon, JH, Yurchenko, V, Yushmanov, I, Zaborowska, A, Zaccolo, V, Zaman, A, Zampolli, C, Zanoli, HJC, Zaporozhets, S, Zardoshti, N, Zarochentsev, A, Zavada, P, Zaviyalov, N, Zbroszczyk, H, Zgura, IS, Zhalov, M, Zhang, H, Zhang, X, Zhang, Y, Zhang, C, Zhang, Z, Zhao, C, Zhigareva, N, Zhou, D, Zhou, Y, Zhou, Z, Zhu, H, Zhu, J, Zichichi, A, Zimmermann, A, Zimmermann, MB, Zinovjev, G and Zyzak, M (2016) Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at √<i><SUP>S</SUP>NN</i>=5.02 TeV. PHYSICAL REVIEW LETTERS, 116 (22). 222302-.

Text Centrality dependence of the charged-particle multiplicity density at mid rapidity in Pb-Pb collsions at sqrt(sNN) = 5.02 TeV.pdf - Author Accepted Manuscript Download (900kB)

Abstract

The pseudorapidity density of charged particles, dN_{ch}/dη, at midrapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of sqrt[s_{NN}]=5.02  TeV. For the 5% most central collisions, we measure a value of 1943±54. The rise in dN_{ch}/dη as a function of sqrt[s_{NN}] is steeper than that observed in proton-proton collisions and follows the trend established by measurements at lower energy. The increase of dN_{ch}/dη as a function of the average number of participant nucleons, ⟨N_{part}⟩, calculated in a Glauber model, is compared with the previous measurement at sqrt[s_{NN}]=2.76  TeV. A constant factor of about 1.2 describes the increase in dN_{ch}/dη from sqrt[s_{NN}]=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.

Item Type:	Article
Uncontrolled Keywords:	ALICE Collaboration
Depositing User:	Symplectic Admin
Date Deposited:	13 Jul 2016 11:24
Last Modified:	19 Oct 2023 10:25
DOI:	10.1103/PhysRevLett.116.222302
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3002288

Available Versions of this Item

• Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at root(NN)-N-S=5.02 TeV. (deposited 04 Jul 2016 09:23)
  • Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at √<i><SUP>S</SUP>NN</i>=5.02 TeV. (deposited 13 Jul 2016 11:24) [Currently Displayed]