Journal articles
Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV
J. Adam
J.C. Hamon
1
B. Hippolyte
1
C. Kuhn
1
A. Maire
1
C. Roy
1
Y. Schutz
1, 2
S. Senyukov
1
V. Barret
3
N. Bastid
3
A. Batista Camejo
3
P. Crochet
3
P. Dupieux
3
V.J.G. Feuillard
3
X. Lopez
3
F. Manso
3
S. Porteboeuf-Houssais
3
P. Rosnet
3
Laurent Aphecetche
2
B. Audurier
2
Guillaume Batigne
2
B. Erazmus
2
A. Francisco
2
Marie Germain
2
Gines Martinez Garcia
2
L. Molnar
2
A. Morreale
2
Philippe Pillot
2
L. Ronflette
2
Alexandre Shabetai
2
Diego Stocco
2
. J. Zhu
2
C. Cheshkov
4
B. Cheynis
4
L. Ducroux
4
B. Teyssier
4
R. Tieulent
4
A. Uras
4
R. Vernet
5
G. Conesa Balbastre
6
J. Faivre
6
C. Furget
6
R. Guernane
6
C. Silvestre
6
A. Vauthier
6
H. Yokoyama
6
Z. Conesa Del Valle
7
I. Das
7
B. Espagnon
7
C. Hadjidakis
7
I. Lakomov
7
C. Suire
7
J. D. Tapia Takaki
7
M. Tarhini
7
L. Valencia Palomo
7
A. Maire 1
Author
C. Roy 1
Author IdHAL : christelle-roy ORCID : https://orcid.org/0000-0001-5920-6271
Y. Schutz 1, 2
Author
S. Senyukov 1
Author
S. Porteboeuf-Houssais 3
Author
P. Rosnet 3
Author
Laurent Aphecetche 2
Author IdHAL : laurent-aphecetche IdRef : https://www.idref.fr/113847653 ORCID : https://orcid.org/0000-0001-7662-3878
B. Audurier 2
Author
Guillaume Batigne 2
Author IdHAL : guillaume-batigne ORCID : https://orcid.org/0000-0001-8638-6300
B. Erazmus 2
Author
A. Francisco 2
Author
Marie Germain 2
Author IdHAL : marie-germain ORCID : https://orcid.org/0000-0001-7382-1609
Gines Martinez Garcia 2
Author IdHAL : gines-martinez ORCID : https://orcid.org/0000-0002-8657-6742
L. Molnar 2
Author
A. Morreale 2
Author
Philippe Pillot 2
Author IdHAL : ppillot ORCID : https://orcid.org/0000-0002-9067-0803
L. Ronflette 2
Author
Alexandre Shabetai 2
Author IdHAL : alexandre-shabetai ORCID : https://orcid.org/0000-0003-3069-726X
Diego Stocco 2
Author IdHAL : diego-stocco ORCID : https://orcid.org/0000-0002-5377-5163
. J. Zhu 2
Author
R. Tieulent 4
Author
A. Uras 4
Author
R. Vernet 5
Author
G. Conesa Balbastre 6
Author IdHAL : conesa-balbastre-gustavo arXiv : https://arxiv.org/a/gconesab ORCID : https://orcid.org/0000-0001-5283-3520
1
IPHC - Institut Pluridisciplinaire Hubert Curien (23 rue Loess - BP 28 67037 Strasbourg Cedex - France)
- UNISTRA - Université de Strasbourg (4 rue Blaise Pascal - CS 90032 - 67081 Strasbourg cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR7178 (France)
2
SUBATECH - Laboratoire SUBATECH Nantes (4, rue Alfred Kastler - 44070 Nantes Cedex 03 - France)
- Mines Nantes - Mines Nantes (La Chantrerie - 4, rue Alfred Kastler - BP 20722 - 44307 Nantes cedex 3 - France)
- UN - Université de Nantes (1, quai de Tourville - BP 13522 - 44035 Nantes cedex 1 - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6457 (France)
3
LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand (Campus des Cézeaux, 24 avenue des Landais, BP 80026, 63171 Aubière Cedex - France)
- UBP - Université Blaise Pascal - Clermont-Ferrand 2 (34, avenue Carnot - BP 185 / 63006 Clermont-Ferrand cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6533 (France)
4
IPNL - Institut de Physique Nucléaire de Lyon (Campus LyonTech-la Doua
Bâtiment Paul DIRAC
4 Rue Enrico Fermi
69622 Villeurbanne Cedex - France)
- UCBL - Université Claude Bernard Lyon 1 (43, boulevard du 11 novembre 1918, 69622 Villeurbanne cedex - France)
- Université de Lyon (92 rue Pasteur - CS 30122, 69361 Lyon Cedex 07 - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR5822 (France)
5
CC-IN2P3 - Centre de Calcul de l'IN2P3 (Domaine scientifique de La Doua
43 bd du 11 Novembre 1918
69622 Villeurbanne Cedex - France)
6
LPSC - Laboratoire de Physique Subatomique et de Cosmologie (53 avenue des Martyrs - 38026 Grenoble Cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology (46 avenue Félix Viallet 38031 Grenoble Cedex 1 - France)
- UGA [2016-2019] - Université Grenoble Alpes [2016-2019] (CS 40700 - 38058 Grenoble cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5821 (France)
7
IPNO - Institut de Physique Nucléaire d'Orsay (IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX - France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR8608 (France)
Abstract : We present the charged-particle pseudorapidity density in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02\,\mathrm{Te\kern-.25exV}$ 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 $21\,400\pm 1\,300$ while for the most peripheral (80-90%) we find $230\pm 38$. This corresponds to an increase of $(27\pm4)\%$ over the results at $\sqrt{s_{\mathrm{NN}}}=2.76\,\mathrm{Te\kern-.25exV}$ 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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http://hal.in2p3.fr/in2p3-01425241
Contributor : Sylvie Flores <>
Submitted on : Tuesday, January 3, 2017 - 2:21:45 PM
Last modification on : Thursday, February 25, 2021 - 10:58:36 AM
Contributor : Sylvie Flores <>
Submitted on : Tuesday, January 3, 2017 - 2:21:45 PM
Last modification on : Thursday, February 25, 2021 - 10:58:36 AM
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- HAL Id : in2p3-01425241, version 1
- ARXIV : 1612.08966
- DOI : 10.1016/j.physletb.2017.07.017
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IN2P3 | LPC-CLERMONT | CNRS | DRS-IPHC | IPHC | UNIV-NANTES | SUBATECH | PRES_CLERMONT | LPSC | IPNO | UNIV-LYON1 | SITE-ALSACE | IMT-ATLANTIQUE | SUBATECH-PLASMA | IP2I | UDL | UGA
Citation
J. Adam, J.C. Hamon, B. Hippolyte, C. Kuhn, A. Maire, et al.. Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV. Physics Letters B, Elsevier, 2017, 772, pp.567-577. ⟨10.1016/j.physletb.2017.07.017⟩. ⟨in2p3-01425241⟩
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