1. Charged-Particle Multiplicity Density in Central Pb-Pb Collisions at sqrt{s_{NN}} = 2.76 TeV
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Aamodt, Kenneth, Pocheptsov, Timur, Bogolyubsky, M, Boldizsar, L, Bombara, M, Bombonati, C, Book, J, Borel, H, Borissov, A, Bortolin, C, Bose, S, Bossu, F, Richter, Matthias, Botje, M, Bottger, S, Boyer, B, Braun-Munzinger, P, Bravina, L, Bregant, M, Breitner, T, Broz, M, Brun, R, Bruna, E, Skaali, Toralf Bernhard, Bruno, GE, Budnikov, D, Buesching, H, Bugaiev, K, Busch, O, Buthelezi, Z, Caffarri, D, Cai, X, Caines, H, Villar, EC, Tveter, Trine Spedstad, Camerini, P, Roman, VC, Romeo, GC, Carena, F, Carena, W, Carminati, F, Diaz, AC, Caselle, M, Castellanos, JC, Catanescu, V, Wikne, Jon Christopher, Cavicchioli, C, Cepila, J, Cerello, P, Chang, B, Chapeland, S, Charvet, JL, Chattopadhyay, S, Cherney, M, Cheshkov, C, Cheynis, B, Zabrodin, Evgeny, Chiavassa, E, Barroso, VC, Chinellato, DD, Chochula, P, Chojnacki, M, Christakoglou, P, Christensen, CH, Christiansen, P, Chujo, T, Cicalo, C, Alme, Johan, Cifarelli, L, Cindolo, F, Cleymans, J, Coccetti, F, Coffin, JP, Coli, S, Balbastre, GC, del Valle, ZC, Constantin, P, Contin, G, Bablok, Sebastian Robert, Contreras, JG, Cormier, TM, Morales, YC, Maldonado, IC, Cortese, P, Cosentino, MR, Costa, F, Cotallo, ME, Crescio, E, Crochet, P, Djuvsland, Øystein, Cuautle, E, Cunqueiro, L, Erasmo, GD, Dainese, A, Dalsgaard, HH, Danu, A, Das, D, Das, I, Das, K, Dash, A, Fehlker, Dominik, Dash, S, De, S, Moregula, AD, de Barros, GOV, De Caro, A, de Cataldo, G, de Cuveland, J, De Falco, A, De Gruttola, D, De Marco, N, Bravina, Larissa, Haaland, Øystein Senneset, De Pasquale, S, De Remigis, R, de Rooij, R, Debski, PR, Sanchez, ED, Delagrange, H, Mercado, YD, Dellacasa, G, Deloff, A, Demanov, V, Huang, Meidana, Denes, E, Deppman, A, Di Bari, D, Di Giglio, C, Di Liberto, S, Di Mauro, A, Di Nezza, P, Dietel, T, DivIa, R, Djuvsland, O, Kanaki, Kalliopi, Dobrin, A, Dobrowolski, T, Dominguez, I, Donigus, B, Dordic, O, Driga, O, Dubey, AK, Dubuisson, J, Ducroux, L, Dupieux, P, Klovning, Arne, Majumdar, AKD, Majumdar, MRD, Elia, D, Emschermann, D, Engel, H, Erdal, HA, Espagnon, B, Estienne, M, Esumi, S, Evans, D, Larsen, Dag Toppe, Evrard, S, Eyyubova, G, Fabjan, CW, Fabris, D, Faivre, J, Falchieri, D, Fantoni, A, Fasel, M, Fearick, R, Fedunov, A, Liu, Lijiao, Fekete, V, Felea, D, Feofilov, G, Tellez, AF, Ferretti, A, Ferretti, R, Figiel, J, Figueredo, MAS, Filchagin, S, Fini, R, Nystrand, Joakim, Finogeev, D, Fionda, FM, Fiore, EM, Floris, M, Foertsch, S, Foka, P, Fokin, S, Fragiacomo, E, Fragkiadakis, M, Frankenfeld, U, Øvrebekk, Gaute, Fuchs, U, Furano, F, Furget, C, Girard, MF, Gaardhoje, JJ, Gadrat, S, Gagliardi, M, Gago, A, Gallio, M, Gangadharan, DR, Skjerdal, Kyrre, Ganoti, P, Ganti, MS, Garabatos, C, Garcia-Solis, E, Garishvili, I, Gemme, R, Gerhard, J, Germain, M, Geuna, C, Gheata, A, Ullaland, Kjetil, Gheata, M, Ghidini, B, Ghosh, P, Gianotti, P, Girard, MR, Giraudo, G, Giubellino, P, Gladysz-Dziadus, E, Glassel, P, Gomez, R, Dordic, Olja, Wagner, Boris, Ferreiro, EG, Santos, HG, Gonzalez-Trueba, LH, Gonzalez-Zamora, P, Gorbunov, S, Gotovac, S, Grabski, V, Grajcarek, R, Grelli, A, Grigoras, A, Abel, N, Grigoras, C, Grigoriev, V, Grigoryan, A, Grigoryan, S, Grinyov, B, Grion, N, Gros, P, Grosse-Oetringhaus, JF, Grossiord, JY, Grosso, R, Abramyan, A, Guber, F, Guernane, R, Gutierrez, CG, Guerzoni, B, Gulbrandsen, K, Gunji, T, Gupta, A, Gupta, R, Gutbrod, H, Haaland, O, Aggarwal, M.M., Hadjidakis, C, Haiduc, M, Hamagaki, H, Hamar, G, Harris, JW, Hartig, M, Hasch, D, Hasegan, D, Hatzifotiadou, D, Hayrapetyan, A, Agocs, A.G., Heide, M, Heinz, M, Helstrup, H, Herghelegiu, A, Hernandez, C, Corral, GH, Herrmann, N, Hetland, KF, Hicks, B, Hille, PT, Ahammed, Z, Hippolyte, B, Horaguchi, T, Hori, Y, Hristov, P, Hrivnacova, I, Huang, M, Huber, S, Humanic, TJ, Hwang, DS, Ichou, R, Ahmad, A., Ilkaev, R, Ilkiv, I, Inaba, M, Incani, E, Innocenti, GM, Innocenti, PG, Ippolitov, M, Irfan, M, Ivan, C, Ivanov, A, Akimoto, R, Ivanov, M, Ivanov, V, Jacholkowski, A, Jacobs, PM, Jancurova, L, Jangal, S, Janik, R, Jena, S, Jirden, L, Jones, GT, Allesandro, B., Jones, PG, Jovanovic, P, Jung, H, Jung, W, Jusko, A, Kalcher, S, Kalinak, P, Kalisky, M, Kalliokoski, T, Kalweit, A, Alici, A, Kamermans, R, Kanaki, K, Kang, E, Kang, JH, Kaplin, V, Karavichev, O, Karavicheva, T, Karpechev, E, Kazantsev, A, Kebschull, U, Eyyubova, Gyulnara, Alt, T., Keidel, R, Khan, MM, Khan, SA, Khanzadeev, A, Kharlov, Y, Kileng, B, Kim, DJ, Kim, DS, Kim, DW, Kim, HN, Altini, V, Kim, JH, Kim, JS, Kim, M, Kim, S, Kim, SH, Kirsch, S, Kisel, I, Kiselev, S, Kisiel, A, Klay, JL, Antinori, F., Klein, J, Klein-Bosing, C, Kliemant, M, Klovning, A, Kluge, A, Knichel, ML, Koch, K, Kohler, MK, Kolevatov, R, Kolojvari, A, Antipin, K, Kondratiev, V, Kondratyeva, N, Konevskih, A, Kornas, E, Don, CKK, Kour, R, Kowalski, M, Kox, S, Meethaleveedu, GK, Kozlov, K, Antonioli, P., Kral, J, Kralik, I, Kramer, F, Kraus, I, Krawutschke, T, Kretz, M, Krivda, M, Krizek, F, Krumbhorn, D, Krus, M, Anzo, A, Kryshen, E, Krzewicki, M, Kucheriaev, Y, Kuhn, C, Kuijer, PG, Kurashvili, P, Kurepin, A, Kurepin, AB, Kuryakin, A, Kushpil, S, Arcelli, S, Kushpil, V, Kweon, MJ, Kwon, Y, La Rocca, P, de Guevara, PL, Lafage, V, Lara, C, Lardeux, A, Larsen, DT, Lazzeroni, C, Kværnø, Henning, Le Bornec, Y, Lea, R, Lee, KS, Lee, SC, Lefevre, F, Lehnert, J, Leistam, L, Lenhardt, M, Lenti, V, Monzon, IL, Pommeresche, Bjørn-Erling, Vargas, HL, Levai, P, Li, X, Lien, J, Lietava, R, Lindal, S, Lindenstruth, V, Lippmann, C, Lisa, MA, Liu, L, Qvigstad, Henrik, Loenne, PI, Loggins, VR, Loginov, V, Lohn, S, Loizides, C, Loo, KK, Lopez, X, Noriega, ML, Torres, EL, Lovhoiden, G, Kolevatov, Rodion, Erdal, Hege Austrheim, Lu, XG, Luettig, P, Lunardon, M, Luparello, G, Luquin, L, Luzzi, C, Ma, K, Ma, R, Madagodahettige-Don, DM, Maevskaya, A, Helstrup, Håvard, Mager, M, Mahapatra, DP, Maire, A, Mal'Kevich, D, Malaev, M, Cervantes, IM, Malinina, L, Malzacher, P, Mamonov, A, Manceau, L, Hetland, Kristin Fanebust, Mangotra, L, Manko, V, Manso, F, Manzari, V, Mao, Y, Mares, J, Margagliotti, GV, Margotti, A, Marin, A, Markert, C, Kileng, Bjarte, Martashvili, I, Martinengo, P, Martinez, MI, Davalos, AM, Garcia, GM, Martynov, Y, Masciocchi, S, Masera, M, Masoni, A, Massacrier, L, Arend, A, Mastromarco, M, Mastroserio, A, Matthews, ZL, Matyja, A, Mayani, D, Mayer, C, Mazza, G, Mazzoni, MA, Meddi, F, Menchaca-Rocha, A, Armesto, N, Lorenzo, PM, Menis, I, Perez, JM, Meres, M, Mereu, P, Miake, Y, Midori, J, Milano, L, Milosevic, J, Mischke, A, Arnaldi, R, Miskowiec, D, Mitu, C, Mlynarz, J, Mohanty, AK, Mohanty, B, Molnar, L, Zetina, LM, Monteno, M, Montes, E, Morando, M, Aronsson, T, De Godoy, DAM, Moretto, S, Morsch, A, Muccifora, V, Mudnic, E, Muhuri, S, Muller, H, Munhoz, MG, Munoz, J, Musa, L, Arsene, Ionut Christian, Musso, A, Nandi, BK, Nania, R, Nappi, E, Nattrass, C, Navach, F, Navin, S, Nayak, TK, Nazarenko, S, Nazarov, G, Barile, F, Nedosekin, A, Nendaz, F, Newby, J, Nicassio, M, Nielsen, BS, Niida, T, Nikolaev, S, Nikolic, V, Nikulin, S, Nikulin, V, Lindal, Svein, Barnafoldi, GG, Nilsen, BS, Nilsson, MS, Noferini, F, Nooren, G, Novitzky, N, Nyanin, A, Nyatha, A, Nygaard, C, Nystrand, J, Obayashi, H, Barnby, LS, Ochirov, A, Oeschler, H, Oh, SK, Oleniacz, J, Oppedisano, C, Velasquez, AO, Ortona, G, Oskarsson, A, Ostrowski, P, Otterlund, I, Barret, V, Otwinowski, J, Oyama, K, Ozawa, K, Pachmayer, Y, Pachr, M, Padilla, F, Pagano, P, Jayarathna, SP, Paic, G, Painke, F, Bartke, J, Pajares, C, Pal, S, Pal, SK, Palaha, A, Palmeri, A, Pappalardo, GS, Park, WJ, Patalakha, DI, Paticchio, V, Pavlinov, A, Basile, M, Pawlak, T, Peitzmann, T, Peresunko, D, Lara, CEP, Perini, D, Perrino, D, Peryt, W, Pesci, A, Peskov, V, Pestov, Y, Bastid, N, Peters, AJ, Petracek, V, Petran, M, Petris, M, Petrov, P, Petrovici, M, Petta, C, Piano, S, Piccotti, A, Pikna, M, Bathen, B, Pillot, P, Pinazza, O, Pinsky, L, Pitz, N, Piuz, F, Piyarathna, DB, Platt, R, Ploskon, M, Pluta, J, Pocheptsov, T, Batigne, G, Pochybova, S, Podesta-Lerma, PLM, Poghosyan, MG, Polak, K, Polichtchouk, B, Pop, A, Porteboeuf, S, Pospisil, V, Potukuchi, B, Prasad, SK, Batyunya, B, Preghenella, R, Prino, F, Pruneau, CA, Pshenichnov, I, Puddu, G, Pulvirenti, A, Punin, V, Putis, M, Putschke, J, Quercigh, E, Baumann, C, Qvigstad, H, Rachevski, A, Rademakers, A, Rademakers, O, Radomski, S, Raiha, TS, Rak, J, Rakotozafindrabe, A, Ramello, L, Reyes, AR, Løvhøiden, Gunnar, Bearden, IG, Rammler, M, Raniwala, R, Raniwala, S, Rasanen, SS, Read, KF, Real, J, Redlich, K, Renfordt, R, Reolon, AR, Reshetin, A, Beck, H, Rettig, F, Revol, JP, Reygers, K, Ricaud, H, Riccati, L, Ricci, RA, Riedler, P, Riegler, W, Riggi, F, Cahuantzi, MR, Belikov, I, Rohr, D, Rohrich, D, Romita, R, Ronchetti, F, Rosinsky, P, Rosnet, P, Rossegger, S, Rossi, A, Roukoutakis, F, Rousseau, S, Bellini, F, Roy, C, Roy, P, Montero, AJR, Rui, R, Rivetti, A, Rusanov, I, Ryabinkin, E, Rybicki, A, Sadovsky, S, Safarik, K, Bellwied, R, Sahoo, R, Sahu, PK, Saini, J, Saiz, P, Sakai, S, Sakata, D, Salgado, CA, Samanta, T, Sambyal, S, Samsonov, V, Belmont-Moreno, E, Castro, XS, Sandor, L, Sandoval, A, Sano, M, Sano, S, Santo, R, Santoro, R, Sarkamo, J, Saturnini, P, Scapparone, E, Beole, S, Scarlassara, F, Scharenberg, RP, Schiaua, C, Schicker, R, Schmidt, C, Schmidt, HR, Schreiner, S, Schuchmann, S, Schukraft, J, Schutz, Y, Berceanu, I, Schwarz, K, Schweda, K, Scioli, G, Scomparin, E, Scott, PA, Scott, R, Segato, G, Selyuzhenkov, I, Senyukov, S, Seo, J, Bercuci, A, Serci, S, Serradilla, E, Sevcenco, A, Sgura, I, Shabratova, G, Shahoyan, R, Sharma, N, Sharma, S, Shigaki, K, Shimomura, M, Berdermann, E, Shtejer, K, Sibiriak, Y, Siciliano, M, Sicking, E, Siemiarczuk, T, Silenzi, A, Silvermyr, D, Simonetti, G, Singaraju, R, Singh, R, Milosevic, Jovan, Berdnikov, Y, Singhal, V, Sinha, BC, Sinha, T, Sitar, B, Sitta, M, Skaali, TB, Skjerdal, K, Smakal, R, Smirnov, N, Snellings, R, Bergmann, C, Sogaard, C, Soloviev, A, Soltz, R, Son, H, Song, J, Song, M, Soos, C, Soramel, F, Spyropoulou-Stassinaki, M, Srivastava, BK, Betev, L, Stachel, J, Stan, I, Stefanek, G, Stefanini, G, Steinbeck, T, Steinpreis, M, Stenlund, E, Steyn, G, Stocco, D, Stock, R, Bhasin, A, Stokkevag, CH, Stolpovskiy, M, Strmen, P, Suaide, AAP, Vasquez, MAS, Sugitate, T, Suire, C, Sukhorukov, M, Sumbera, M, Susa, T, Bhati, AK, Swoboda, D, Symons, TJM, de Toledo, AS, Szarka, I, Szostak, A, Tagridis, C, Takahashi, J, Takaki, JDT, Tauro, A, Tavlet, M, Bianchi, L, Munoz, GT, Telesca, A, Terrevoli, C, Thader, J, Thomas, D, Thomas, JH, Tieulent, R, Timmins, AR, Tlusty, D, Toia, A, Bianchi, N, Torii, H, Toscano, L, Tosello, F, Traczyk, T, Truesdale, D, Trzaska, WH, Tsuji, T, Tumkin, A, Turrisi, R, Turvey, AJ, Bianchin, C, Tveter, TS, Ulery, J, Ullaland, K, Uras, A, Urban, J, Urciuoli, GM, Usai, GL, Vacchi, A, Vajzer, M, Vala, M, Bielcik, J, Palomo, LV, Vallero, S, van der Kolk, N, van Leeuwen, M, Vyvre, PV, Vannucci, L, Vargas, A, Varma, R, Vasileiou, M, Vasiliev, A, Bielcikova, J, Vechernin, V, Veldhoen, M, Venaruzzo, M, Vercellin, E, Vergara, S, Vernekohl, DC, Vernet, R, Verweij, M, Vickovic, L, Viesti, G, Nilsson, Mads Stormo, Bilandzic, A, Vikhlyantsev, O, Vilakazi, Z, Baillie, OV, Vinogradov, A, Vinogradov, L, Vinogradov, Y, Virgili, T, Viyogi, YP, Vodopyanov, A, Voloshin, K, Biolcati, E, Voloshin, S, Volpe, G, von Haller, B, Vranic, D, Ovrebekk, G, Vrlakova, J, Vulpescu, B, Vyushin, A, Wagner, B, Wagner, V, Blanc, A, Wan, R, Wang, D, Wang, Y, Watanabe, K, Wessels, JP, Westerhoff, U, Wiechula, J, Wikne, J, Wilde, M, Wilk, A, Blanco, F, Wilk, G, Williams, MCS, Windelband, B, Karampatsos, LX, Yang, H, Yang, S, Yasnopolskiy, S, Yi, J, Yin, Z, Yokoyama, H, Blau, D, Yoo, IK, Yu, W, Yuan, X, Yushmanov, I, Zabrodin, E, Zach, C, Zampolli, C, Zaporozhets, S, Zarochentsev, A, Zavada, P, Blume, C, Zaviyalov, N, Zbroszczyk, H, Zelnicek, P, Zenin, A, Zgura, I, Zhalov, M, Zhang, X, Zhou, D, Zichichi, A, Zinovjev, G, Boccioli, M, Zoccarato, Y, Zynovyev, M, Bock, N, Bogdanov, A, Boggild, H, and Universidade Estadual de Campinas
- Subjects
Plus Au Collisions ,VDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 ,Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP] ,VDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 ,Energies ,Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP] ,Pseudorapidity Distributions ,Aa Collisions ,High Energy Physics::Experiment ,Nuclear Physics - Experiment ,Lhc ,Nuclear Experiment ,Pp Interactions ,Pa - Abstract
The first measurement of the charged-particle multiplicity density at mid-rapidity in Pb-Pb collisions at a centre-of-mass energy per nucleon pair sqrt(sNN) = 2.76 TeV is presented. For an event sample corresponding to the most central 5% of the hadronic cross section the pseudo-rapidity density of primary charged particles at mid-rapidity is 1584 +- 4 (stat) +- 76 (sys.), which corresponds to 8.3 +- 0.4 (sys.) per participating nucleon pair. This represents an increase of about a factor 1.9 relative to pp collisions at similar collision energies, and about a factor 2.2 to central Au-Au collisions at sqrt(sNN) = 0.2 TeV. This measurement provides the first experimental constraint for models of nucleus-nucleus collisions at LHC energies. The first measurement of the charged-particle multiplicity density at mid-rapidity in Pb-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}}$ = 2.76 TeV is presented. For an event sample corresponding to the most central 5% of the hadronic cross section the pseudo-rapidity density of primary charged particles at mid-rapidity is 1584 $\pm$ 4 (stat) $\pm$ 76 (sys.), which corresponds to 8.3 $\pm$ 0.4 (sys.) per participating nucleon pair. This represents an increase of about a factor 1.9 relative to pp collisions at similar collision energies, and about a factor 2.2 to central Au-Au collisions at $\sqrt{s_{\rm NN}}$ = 0.2 TeV. This measurement provides the first experimental constraint for models of nucleus-nucleus collisions at LHC energies.
- Published
- 2010