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Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at root s(NN)=2.76 TeV

Abbas, E.; Abelev, B.; Adam, J.; Adamova, D.; Adare, A. M.; Aggarwal, M. M.; Rinella, G. Aglieri; Agnello, M.; Agocs, A. G. and Agostinelli, A., et al. (2013) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 726(4-5). p.610-622
Abstract
We present the first wide-range measurement of the charged-particle pseudorapidity density distribution, for different centralities (the 0-5%, 5-10%, 10-20%, and 20-30% most central events) in Pb-Pb collisions at root s(NN) = 2.76 TeV at the LHC. The measurement is performed using the full coverage of the ALICE detectors, -5.0 < eta < 5.5, and employing a special analysis technique based on collisions arising from LHC 'satellite' bunches. We present the pseudorapidity density as a function of the number of participating nucleons as well as an extrapolation to the total number of produced charged particles (N-ch = 17165 +/- 772 for the 0-5% most central collisions). From the measured dN(ch)/d eta distribution we derive the rapidity... (More)
We present the first wide-range measurement of the charged-particle pseudorapidity density distribution, for different centralities (the 0-5%, 5-10%, 10-20%, and 20-30% most central events) in Pb-Pb collisions at root s(NN) = 2.76 TeV at the LHC. The measurement is performed using the full coverage of the ALICE detectors, -5.0 < eta < 5.5, and employing a special analysis technique based on collisions arising from LHC 'satellite' bunches. We present the pseudorapidity density as a function of the number of participating nucleons as well as an extrapolation to the total number of produced charged particles (N-ch = 17165 +/- 772 for the 0-5% most central collisions). From the measured dN(ch)/d eta distribution we derive the rapidity density distribution, dN(ch)/dy, under simple assumptions. The rapidity density distribution is found to be significantly wider than the predictions of the Landau model. We assess the validity of longitudinal scaling by comparing to lower energy results from RHIC. Finally the mechanisms of the underlying particle production are discussed based on a comparison with various theoretical models. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved. (Less)
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LHC, Heavy-ion collisions, Charged-particle density, Wide rapidity, coverage
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Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
726
issue
4-5
pages
610 - 622
publisher
Elsevier
external identifiers
  • wos:000327907000006
  • scopus:84886244774
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0370-2693
DOI
10.1016/j.physletb.2013.09.022
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English
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972d3c34-88a8-445d-849c-c021171b6c7a (old id 4260652)
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2014-02-13 10:40:34
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2018-11-18 03:56:37
@article{972d3c34-88a8-445d-849c-c021171b6c7a,
  abstract     = {We present the first wide-range measurement of the charged-particle pseudorapidity density distribution, for different centralities (the 0-5%, 5-10%, 10-20%, and 20-30% most central events) in Pb-Pb collisions at root s(NN) = 2.76 TeV at the LHC. The measurement is performed using the full coverage of the ALICE detectors, -5.0 &lt; eta &lt; 5.5, and employing a special analysis technique based on collisions arising from LHC 'satellite' bunches. We present the pseudorapidity density as a function of the number of participating nucleons as well as an extrapolation to the total number of produced charged particles (N-ch = 17165 +/- 772 for the 0-5% most central collisions). From the measured dN(ch)/d eta distribution we derive the rapidity density distribution, dN(ch)/dy, under simple assumptions. The rapidity density distribution is found to be significantly wider than the predictions of the Landau model. We assess the validity of longitudinal scaling by comparing to lower energy results from RHIC. Finally the mechanisms of the underlying particle production are discussed based on a comparison with various theoretical models. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.},
  author       = {Abbas, E. and Abelev, B. and Adam, J. and Adamova, D. and Adare, A. M. and Aggarwal, M. M. and Rinella, G. Aglieri and Agnello, M. and Agocs, A. G. and Agostinelli, A. and Ahammed, Z. and Masoodi, A. Ahmad and Ahmad, N. and Ahn, S. U. and Ahn, S. A. and Aimo, I. and Ajaz, M. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. and Alici, A. and Alkin, A. and Almaraz Avina, E. and Alme, J. and Alt, T. and Altini, V. and Altinpinar, S. and Altsybeev, I. and Andrei, C. and Andronic, A. and Anguelov, V. and Anielski, J. and Anson, C. and Anticic, T. and Antinori, F. and Antonioli, P. and Aphecetche, L. and Appelshaeuser, H. and Arbor, N. and Arcelli, S. and Arend, A. and Armesto, N. and Arnaldi, R. and Aronsson, T. and Arsene, I. C. and Arslandok, M. and Asryan, A. and Augustinus, A. and Averbeck, R. and Awes, T. C. and Aysto, J. and Azmi, M. D. and Bach, M. and Badala, A. and Baek, Y. W. and Bailhache, R. and Bala, R. and Baldisseri, A. and Baltasar Dos Santos Pedrosa, F. and Ban, J. and Baral, R. C. and Barbera, R. and Barile, F. and Barnafoeldi, G. G. and Barnby, L. S. and Barret, V. and Bartke, J. and Basile, M. and Bastid, N. and Basu, S. and Bathen, B. and Batigne, G. and Batyunya, B. and Batzing, P. C. and Baumann, C. and Bearden, I. G. and Beck, H. and Behera, N. K. and Belikov, I. and Bellini, F. and Bellwied, R. and Belmont-Moreno, E. and Bencedi, G. and Beole, S. and Berceanu, I. and Bercuci, A. and Berdnikov, Y. and Berenyi, D. and Bergognon, A. A. E. and Bertens, R. A. and Berzano, D. and Betev, L. and Bhasin, A. and Bhati, A. K. and Bhom, J. and Bianchi, N. and Bianchi, L. and Bianchin, C. and Bielcik, J. and Bielcikova, J. and Bilandzic, A. and Bjelogrlic, S. and Blanco, F. and Blanco, F. and Blau, D. and Blume, C. and Boccioli, M. and Boettger, S. and Bogdanov, A. and Boggild, H. and Bogolyubsky, M. and Boldizsar, L. and Bombara, M. and Book, J. and Borel, H. and Borissov, A. and Bossu, F. and Botje, M. and Botta, E. and Braidot, E. and Braun-Munzinger, P. and Bregant, M. and Breitner, T. and Broker, T. A. and Browning, T. A. and Broz, M. and Brun, R. and Bruna, E. and Bruno, G. E. and Budnikov, D. and Buesching, H. and Bufalino, S. and Buncic, P. and Busch, O. and Buthelezi, Z. and Caffarri, D. and Cai, X. and Caines, H. and Calvo Villar, E. and Camerini, P. and Canoa Roman, V. and Cara Romeo, G. and Carena, F. and Carena, W. and Carlin Filho, N. and Carminati, F. and Casanova Diaz, A. and Castillo Castellanos, J. and Castillo Hernandez, J. F. and Casula, E. A. R. and Catanescu, V. and Cavicchioli, C. and Sanchez, C. Ceballos and Cepila, J. and Cerello, P. and Chang, B. and Chapeland, S. and Charvet, J. L. and Chattopadhyay, S. and Chattopadhyay, S. and Cherney, M. and Cheshkov, C. and Cheynis, B. and Chibante Barroso, V. and Chinellato, D. D. and Chochula, P. and Chojnacki, M. and Choudhury, S. and Christakoglou, P. and Christensen, C. H. and Christiansen, Peter and Chujo, T. and Chung, S. U. and Cicalo, C. and Cifarelli, L. and Cindolo, F. and Cleymans, J. and Colamaria, F. and Colella, D. and Collu, A. and Conesa Balbastre, G. and Conesa del Valle, Z. and Connors, M. E. and Contin, G. and Contreras, J. G. and Cormier, T. M. and Corrales Morales, Y. and Cortese, P. and Cortes Maldonado, I. and Cosentino, M. R. and Costa, F. and Cotallo, M. E. and Crescio, E. and Crochet, P. and Cruz Alaniz, E. and Cruz Albino, R. and Cuautle, E. and Cunqueiro, L. and Dainese, A. and Dalsgaard, H. H. and Dang, R. and Danu, A. and Das, K. and Das, I. and Das, S. and Das, D. and Dash, A. and Dash, S. and De, S. and de Barros, G. O. V. and De Caro, A. and de Cataldo, G. and de Cuveland, J. and De Falco, A. and De Gruttola, D. and Delagrange, H. and Deloff, A. and De Marco, N. and Denes, E. and De Pasquale, S. and Deppman, A. and Erasmo, G. D. and de Rooij, R. and Diaz Corchero, M. A. and Di Bari, D. and Dietel, T. and Di Giglio, C. and Di Liberto, S. and Di Mauro, A. and Di Nezza, P. and Divia, R. and Djuvsland, O. and Dobrin, Alexandru and Dobrowolski, T. and Doenigus, B. and Dordic, O. and Driga, O. and Dubey, A. K. and Dubla, A. and Ducroux, L. and Dupieux, P. and Majumdar, A. K. Dutta and Elia, D. and Emschermann, D. and Engel, H. and Erazmus, B. and Erdal, H. A. and Eschweiler, D. and Espagnon, B. and Estienne, M. and Esumi, S. and Evans, D. and Evdokimov, S. and Eyyubova, G. and Fabris, D. and Faivre, J. and Falchieri, D. and Fantoni, A. and Fasel, M. and Fehlker, D. and Feldkamp, L. and Felea, D. and Feliciello, A. and Fenton-Olsen, B. and Feofilov, G. and Fernandez Tellez, A. and Ferretti, A. and Festanti, A. and Figiel, J. and Figueredo, M. A. S. and Filchagin, S. and Finogeev, D. and Fionda, F. M. and Fiore, E. M. and Floratos, E. and Floris, M. and Foertsch, S. and Foka, P. and Fokin, S. and Fragiacomo, E. and Francescon, A. and Frankenfeld, U. and Fuchs, U. and Furget, C. and Fusco Girard, M. and Gaardhoje, J. J. and Gagliardi, M. and Gago, A. and Gallio, M. and Gangadharan, D. R. and Ganoti, P. and Garabatos, C. and Garcia-Solis, E. and Gargiulo, C. and Garishvili, I. and Gerhard, J. and Germain, M. and Geuna, C. and Gheata, A. and Gheata, M. and Ghidini, B. and Ghosh, P. and Gianotti, P. and Girard, M. R. and Giubellino, P. and Gladysz-Dziadus, E. and Glaessel, P. and Gomez, R. and Ferreiro, E. G. and Gonzalez-Trueba, L. H. and Gonzalez-Zamora, P. and Gorbunov, S. and Goswami, A. and Gotovac, S. and Graczykowski, L. K. and Grajcarek, R. and Grelli, A. and Grigoras, A. and Grigoras, C. and Grigoriev, V. and Grigoryan, A. and Grigoryan, S. and Grinyov, B. and Grion, N. and Gros, Philippe and Grosse-Oetringhaus, J. F. and Grossiord, J. -Y. and Grosso, R. and Guber, F. and Guernane, R. and Guerzoni, B. and Guilbaud, M. and Gulbrandsen, K. and Gulkanyan, H. and Gunji, T. and Gupta, R. and Gupta, A. and Haake, R. and Haaland, O. and Hadjidakis, C. and Haiduc, M. and Hamagaki, H. and Hamar, G. and Han, B. H. and Hanratty, L. D. and Hansen, A. and Harmanova-Tothova, Z. and Harris, J. W. and Hartig, M. and Harton, A. and Hatzifotiadou, D. and Hayashi, S. and Hayrapetyan, A. and Heckel, S. T. and Heide, M. and Helstrup, H. and Herghelegiu, A. and Herrera Corral, G. and Herrmann, N. and Hess, B. A. and Hetland, K. F. and Hicks, B. and Hippolyte, B. and Hori, Y. and Hristov, P. and Hrivnacova, I. and Huang, M. and Humanic, T. J. and Hwang, D. S. and Ichou, R. and Ilkaev, R. and Ilkiv, I. and Inaba, M. and Incani, E. and Innocenti, P. G. and Innocenti, G. M. and Ippolitov, M. and Irfan, M. and Ivan, C. and Ivanov, V. and Ivanov, A. and Ivanov, M. and Ivanytskyi, O. and Jacholkowski, A. and Jacobs, P. M. and Jahnke, C. and Jang, H. J. and Janik, M. A. and Jayarathna, P. H. S. Y. and Jena, S. and Jha, D. M. and Jimenez Bustamante, R. T. and Jones, P. G. and Jung, H. and Jusko, A. and Kaidalov, A. B. and Kalcher, S. and Kalinak, P. and Kalliokoski, T. and Kalweit, A. and Kang, J. H. and Kaplin, V. and Kar, S. and Uysal, A. Karasu and Karavichev, O. and Karavicheva, T. and Karpechev, E. and Kazantsev, A. and Kebschull, U. and Keidel, R. and Ketzer, B. and Khan, K. 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Maldonado and Malinina, Ludmila and Mal'Kevich, D. and Malzacher, P. and Mamonov, A. and Manceau, L. and Mangotra, L. and Manko, V. and Manso, F. and Manzari, V. and Mao, Y. and Marchisone, M. and Mares, J. and Margagliotti, G. V. and Margotti, A. and Marin, A. and Markert, C. and Marquard, M. and Martashvili, I. and Martin, N. A. and Martinengo, P. and Martinez, M. I. and Martinez Garcia, G. and Martynov, Y. and Mas, A. and Masciocchi, S. and Masera, M. and Masoni, A. and Massacrier, L. and Mastroserio, A. and Matyja, A. and Mayer, C. and Mazer, J. and Mazzoni, M. A. and Meddi, F. and Menchaca-Rocha, A. and Mercado Perez, J. and Meres, M. and Miake, Y. and Mikhaylov, K. and Milano, L. and Milosevic, Jovan and Mischke, A. and Mishra, A. N. and Miskowiec, D. and Mitu, C. and Mizuno, S. and Mlynarz, J. and Mohanty, B. and Molnar, L. and Montano Zetina, L. and Monteno, M. and Montes, E. and Moon, T. and Morando, M. and Moreira De Godoy, D. A. and Moretto, S. and Morreale, A. and Morsch, A. and Muccifora, V. and Mudnic, E. and Muhuri, S. and Mukherjee, M. and Mueller, H. and Munhoz, M. G. and Murray, S. and Musa, L. and Musinsky, J. and Nandi, B. K. and Nania, R. and Nappi, E. and Nattrass, C. and Nayak, T. K. and Nazarenko, S. and Nedosekin, A. and Nicassio, M. and Niculescu, M. and Nielsen, B. S. and Niida, T. and Nikolaev, S. and Nikolic, V. and Nikulin, S. and Nikulin, V. and Nilsen, B. S. and Nilsson, M. S. and Noferini, F. and Nomokonov, P. and Nooren, G. and Nyanin, A. and Nyatha, A. and Nygaard, C. and Nystrand, J. and Ochirov, A. and Oeschler, H. and Oh, S. and Oh, S. K. and Oleniacz, J. and Oliveira Da Silva, A. C. and Oppedisano, C. and Ortiz Velasquez, Antonio and Oskarsson, Anders and Ostrowski, P. and Otwinowski, J. and Oyama, K. and Ozawa, K. and Pachmayer, Y. and Pachr, M. and Padilla, F. and Pagano, P. and Paic, G. and Painke, F. and Pajares, C. and Pal, S. 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  issn         = {0370-2693},
  keyword      = {LHC,Heavy-ion collisions,Charged-particle density,Wide rapidity,coverage},
  language     = {eng},
  number       = {4-5},
  pages        = {610--622},
  publisher    = {Elsevier},
  series       = {Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at root s(NN)=2.76 TeV},
  url          = {http://dx.doi.org/10.1016/j.physletb.2013.09.022},
  volume       = {726},
  year         = {2013},
}