Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at √sNN=5.02TeV
We present the charged-particle pseudorapidity density in Pb-Pb collisions at sNN=5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for reliable estimates of the total number of charged particles produced in the c...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
14 July 2017
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| In: |
Physics letters
Year: 2017, Jahrgang: 772, Pages: 567-577 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2017.07.017 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1016/j.physletb.2017.07.017 Verlag, kostenfrei, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269317305646 
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| Verfasserangaben: | ALICE Collaboration* |
MARC
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| 245 | 1 | 0 | |a Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at √sNN=5.02TeV |c ALICE Collaboration* |
| 246 | 3 | 0 | |a sqrt (s_NN) |
| 246 | 3 | 3 | |a Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at square root s NN = 5.02 TeV |
| 264 | 1 | |c 14 July 2017 | |
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| 500 | |a Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt | ||
| 500 | |a ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, A. Deisting, P. Glässel, J. Kim, S. Klewin, L. Leardini, J. Mercado Pérez, H. Oeschler, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, J. Stachel, D.F. Weiser, J. Wilkinson, B. Windelband, A. Zimmermann [und weitere] | ||
| 500 | |a Gesehen am 15.10.2018 | ||
| 500 | |a NN unter s tiefgestellt | ||
| 520 | |a We present the charged-particle pseudorapidity density in Pb-Pb collisions at sNN=5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for reliable estimates of the total number of charged particles produced in the collisions. For the most central (0-5%) collisions we find 21400±1300, while for the most peripheral (80-90%) we find 230±38. This corresponds to an increase of (27±4)% over the results at sNN=2.76 TeV previously reported by ALICE. The energy dependence of the total number of charged particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The charged-particle pseudorapidity density of the most central collisions is compared to model calculations — none of which fully describes the measured distribution. We also present an estimate of the rapidity density of charged particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies. | ||
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