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In two-particle angular correlation measurements, jets give rise to a near-side peak, formed by particles associated to a higher-pT trigger particle. Measurements of these correlations as a function of pseudorapidity ( η) and azimuthal ( φ) differences are used to extract the centrality and pT dependence of the shape of the near-side peak in the pT range 1 < pT < 8 GeV/c in Pb-Pb and pp collisions at √sNN = 2.76 TeV. A combined fit of the near-side peak and long-range correlations is applied to the data and the peak shape is quantified by the variance of the distributions. While the width of the peak in the φ direction is almost independent of centrality, a significant broadening in the η direction is found from peripheral to central collisions. This feature is prominent for the low-pT region and vanishes above 4 GeV/c. The widths measured in peripheral collisions are equal to those in pp collisions in the φ direction and above 3 GeV/c in the η direction. Furthermore, for the 10% most central collisions and 1 < pT,assoc < 2 GeV/c, 1 < pT,trig < 3 GeV/c, a departure from a Gaussian shape is found: a depletion develops around the center of the peak. The results are compared to A Multi-Phase Transport (AMPT) model simulation as well as other theoretical calculations indicating that the broadening and the development of the depletion are connected to the strength of radial and longitudinal flow.
Evolution of the longitudinal and azimuthal structure of the near-side jet peak in Pb-Pb collisions at √sNN = 2.76 TeV / Adam, J., Adamová, D., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, S., Ahn, S.U., Aiola, S., Akindinov, A., Alam, S.N., Albuquerque, D.S.D., Aleksandrov, D., Alessandro, B., Alexandre, D., Alfaro Molina, R., Alici, A., Alkin, A., Alme, J., et al.. - In: PHYSICAL REVIEW C. - ISSN 2469-9985. - ELETTRONICO. - 96:3(2017), pp. 034904.1-034904.18. [10.1103/PhysRevC.96.034904]
Evolution of the longitudinal and azimuthal structure of the near-side jet peak in Pb-Pb collisions at √sNN = 2.76 TeV
Adam, J.;Adamová, D.;Aggarwal, M. M.;Aglieri Rinella, G.;Agnello, M.;Agrawal, N.;Ahammed, Z.;Ahmad, S.;Ahn, S. U.;Aiola, S.;Akindinov, A.;Alam, S. N.;Albuquerque, D. S. D.;Aleksandrov, D.;Alessandro, B.;Alexandre, D.;Alfaro Molina, R.;Alici, A.;Alkin, A.;Alme, J.;Alt, T.;Altinpinar, S.;Altsybeev, I.;Alves Garcia Prado, C.;An, M.;Andrei, C.;Andrews, H. A.;Andronic, A.;Anguelov, V.;Anson, C.;Antičić, T.;Antinori, F.;Antonioli, P.;Anwar, R.;Aphecetche, L.;Appelshäuser, H.;Arcelli, S.;Arnaldi, R.;Arnold, O. W.;Arsene, I. C.;Arslandok, M.;Audurier, B.;Augustinus, A.;Averbeck, R.;Azmi, M. D.;Badalà, A.;Baek, Y. W.;Bagnasco, S.;Bailhache, R.;Bala, R.;Balasubramanian, S.;Baldisseri, A.;Baral, R. C.;Barbano, A. M.;Barbera, R.;Barile, F.;Barnaföldi, G. G.;Barnby, L. S.;Barret, V.;Bartalini, P.;Barth, K.;Bartke, J.;Bartsch, E.;Basile, M.;Bastid, N.;Basu, S.;Bathen, B.;Batigne, G.;Batista Camejo, A.;Batyunya, B.;Batzing, P. C.;Bearden, I. G.;Beck, H.;Bedda, C.;Behera, N. K.;Belikov, I.;Bellini, F.;Bello Martinez, H.;Bellwied, R.;Beltran, L. G. E.;Belyaev, V.;Bencedi, G.;Beole, S.;Bercuci, A.;Berdnikov, Y.;Berenyi, D.;Bertens, R. A.;Berzano, D.;Betev, L.;Bhasin, A.;Bhat, I. R.;Bhati, A. K.;Bhattacharjee, B.;Bhom, J.;Bianchi, L.;Bianchi, N.;Bianchin, C.;Bielčík, J.;Bielčíková, J.;Bilandzic, A.;Biro, G.;Biswas, R.;Biswas, S.;Bjelogrlic, S.;Blair, J. T.;Blau, D.;Blume, C.;Bock, F.;Bogdanov, A.;Boldizsár, L.;Bombara, M.;Bonora, M.;Book, J.;Borel, H.;Borissov, A.;Borri, M.;Botta, E.;Bourjau, C.;Braun-Munzinger, P.;Bregant, M.;Broker, T. A.;Browning, T. A.;Broz, M.;Brucken, E. J.;Bruna, E.;Bruno, G. E.;Budnikov, D.;Buesching, H.;Bufalino, S.;Buhler, P.;Buitron, S. A. I.;Buncic, P.;Busch, O.;Buthelezi, Z.;Butt, J. B.;Buxton, J. T.;Cabala, J.;Caffarri, D.;Caines, H.;Caliva, A.;Calvo Villar, E.;Camerini, P.;Carena, F.;Carena, W.;Carnesecchi, F.;Castillo Castellanos, J.;Castro, A. J.;Casula, E. A. R.;Ceballos Sanchez, C.;Cepila, J.;Cerello, P.;Cerkala, J.;Chang, B.;Chapeland, S.;Chartier, M.;Charvet, J. L.;Chattopadhyay, S.;Chattopadhyay, S.;Chauvin, A.;Chelnokov, V.;Cherney, M.;Cheshkov, C.;Cheynis, B.;Chibante Barroso, V.;Chinellato, D. D.;Cho, S.;Chochula, P.;Choi, K.;Chojnacki, M.;Choudhury, S.;Christakoglou, P.;Christensen, C. H.;Christiansen, P.;Chujo, T.;Chung, S. U.;Cicalo, C.;Cifarelli, L.;Cindolo, F.;Cleymans, J.;Colamaria, F.;Colella, D.;Collu, A.;Colocci, M.;Conesa Balbastre, G.;Conesa Del Valle, Z.;Connors, M. E.;Contreras, J. G.;Cormier, T. M.;Corrales Morales, Y.;Cortés Maldonado, I.;Cortese, P.;Cosentino, M. R.;Costa, F.;Crkovská, J.;Crochet, P.;Cruz Albino, R.;Cuautle, E.;Cunqueiro, L.;Dahms, T.;Dainese, A.;Danisch, M. C.;Danu, A.;Das, D.;Das, I.;Das, S.;Dash, A.;Dash, S.;De, S.;De Caro, A.;De Cataldo, G.;De Conti, C.;De Cuveland, J.;De Falco, A.;De Gruttola, D.;De Marco, N.;De Pasquale, S.;De Souza, R. D.;Deisting, A.;Deloff, A.;Deplano, C.;Dhankher, P.;Di Bari, D.;Di Mauro, A.;Di Nezza, P.;Di Ruzza, B.;Diaz Corchero, M. A.;Dietel, T.;Dillenseger, P.;Divià, R.;Djuvsland, . Ø.;Dobrin, A.;Domenicis Gimenez, D.;Dönigus, B.;Dordic, O.;Drozhzhova, T.;Dubey, A. K.;Dubla, A.;Ducroux, L.;Duggal, A. K.;Dupieux, P.;Ehlers, R. J.;Elia, D.;Endress, E.;Engel, H.;Epple, E.;Erazmus, B.;Erhardt, F.;Espagnon, B.;Esumi, S.;Eulisse, G.;Eum, J.;Evans, D.;Evdokimov, S.;Eyyubova, G.;Fabbietti, L.;Fabris, D.;Faivre, J.;Fantoni, A.;Fasel, M.;Feldkamp, L.;Feliciello, A.;Feofilov, G.;Ferencei, J.;Fernández Téllez, A.;Ferreiro, E. G.;Ferretti, A.;Festanti, A.;Feuillard, V. J. G.;Figiel, J.;Figueredo, M. A. S.;Filchagin, S.;Finogeev, D.;Fionda, F. M.;Fiore, E. M.;Floris, M.;Foertsch, S.;Foka, P.;Fokin, S.;Fragiacomo, E.;Francescon, A.;Francisco, A.;Frankenfeld, U.;Fronze, G. G.;Fuchs, U.;Furget, C.;Furs, A.;Fusco Girard, M.;Gaardhøje, J. J.;Gagliardi, M.;Gago, A. M.;Gajdosova, K.;Gallio, M.;Galvan, C. D.;Gangadharan, D. R.;Ganoti, P.;Gao, C.;Garabatos, C.;Garcia-Solis, E.;Garg, K.;Garg, P.;Gargiulo, C.;Gasik, P.;Gauger, E. F.;Gay Ducati, M. B.;Germain, M.;Ghosh, P.;Ghosh, S. K.;Gianotti, P.;Giubellino, P.;Giubilato, P.;Gladysz-Dziadus, E.;Glässel, P.;Goméz Coral, D. M.;Gomez Ramirez, A.;Gonzalez, A. S.;Gonzalez, V.;González-Zamora, P.;Gorbunov, S.;Görlich, L.;Gotovac, S.;Grabski, V.;Graczykowski, L. K.;Graham, K. L.;Greiner, L.;Grelli, A.;Grigoras, C.;Grigoriev, V.;Grigoryan, A.;Grigoryan, S.;Grion, N.;Gronefeld, J. M.;Grosse-Oetringhaus, J. F.;Grosso, R.;Gruber, L.;Guber, F.;Guernane, R.;Guerzoni, B.;Gulbrandsen, K.;Gunji, T.;Gupta, A.;Gupta, R.;Guzman, I. B.;Haake, R.;Hadjidakis, C.;Hamagaki, H.;Hamar, G.;Hamon, J. C.;Harris, J. W.;Harton, A.;Hatzifotiadou, D.;Hayashi, S.;Heckel, S. T.;Hellbär, E.;Helstrup, H.;Herghelegiu, A.;Herrera Corral, G.;Herrmann, F.;Hess, B. A.;Hetland, K. F.;Hillemanns, H.;Hippolyte, B.;Hladky, J.;Horak, D.;Hosokawa, R.;Hristov, P.;Hughes, C.;Humanic, T. J.;Hussain, N.;Hussain, T.;Hutter, D.;Hwang, D. S.;Ilkaev, R.;Inaba, M.;Ippolitov, M.;Irfan, M.;Isakov, V.;Islam, M. S.;Ivanov, M.;Ivanov, V.;Izucheev, V.;Jacak, B.;Jacazio, N.;Jacobs, P. M.;Jadhav, M. B.;Jadlovska, S.;Jadlovsky, J.;Jahnke, C.;Jakubowska, M. J.;Janik, M. A.;Jayarathna, P. H. S. Y.;Jena, C.;Jena, S.;Jimenez Bustamante, R. T.;Jones, P. G.;Jusko, A.;Kalinak, P.;Kalweit, A.;Kang, J. H.;Kaplin, V.;Kar, S.;Karasu Uysal, A.;Karavichev, O.;Karavicheva, T.;Karayan, L.;Karpechev, E.;Kebschull, U.;Keidel, R.;Keijdener, D. L. D.;Keil, M.;Mohisin Khan, M.;Khan, P.;Khan, S. A.;Khanzadeev, A.;Kharlov, Y.;Khatun, A.;Khuntia, A.;Kileng, B.;Kim, D. W.;Kim, D. J.;Kim, D.;Kim, H.;Kim, J. S.;Kim, J.;Kim, M.;Kim, M.;Kim, S.;Kim, T.;Kirsch, S.;Kisel, I.;Kiselev, S.;Kisiel, A.;Kiss, G.;Klay, J. L.;Klein, C.;Klein, J.;Klein-Bösing, C.;Klewin, S.;Kluge, A.;Knichel, M. L.;Knospe, A. G.;Kobdaj, C.;Kofarago, M.;Kollegger, T.;Kolojvari, A.;Kondratiev, V.;Kondratyeva, N.;Kondratyuk, E.;Konevskikh, A.;Kopcik, M.;Kour, M.;Kouzinopoulos, C.;Kovalenko, O.;Kovalenko, V.;Kowalski, M.;Koyithatta Meethaleveedu, G.;Králik, I.;Kravčáková, A.;Krivda, M.;Krizek, F.;Kryshen, E.;Krzewicki, M.;Kubera, A. M.;Kučera, V.;Kuhn, C.;Kuijer, P. G.;Kumar, A.;Kumar, J.;Kumar, L.;Kumar, S.;Kundu, S.;Kurashvili, P.;Kurepin, A.;Kurepin, A. B.;Kuryakin, A.;Kushpil, S.;Kweon, M. J.;Kwon, Y.;La Pointe, S. L.;La Rocca, P.;Lagana Fernandes, C.;Lakomov, I.;Langoy, R.;Lapidus, K.;Lara, C.;Lardeux, A.;Lattuca, A.;Laudi, E.;Lazaridis, L.;Lea, R.;Leardini, L.;Lee, S.;Lehas, F.;Lehner, S.;Lehrbach, J.;Lemmon, R. C.;Lenti, V.;Leogrande, E.;León Monzón, I.;Lévai, P.;Li, S.;Li, X.;Lien, J.;Lietava, R.;Lindal, S.;Lindenstruth, V.;Lippmann, C.;Lisa, M. A.;Ljunggren, H. M.;Llope, W.;Lodato, D. F.;Loenne, P. I.;Loginov, V.;Loizides, C.;Lopez, X.;López Torres, E.;Lowe, A.;Luettig, P.;Lunardon, M.;Luparello, G.;Lupi, M.;Lutz, T. H.;Maevskaya, A.;Mager, M.;Mahajan, S.;Mahmood, S. M.;Maire, A.;Majka, R. D.;Malaev, M.;Maldonado Cervantes, I.;Malinina, L.;Mal'Kevich, D.;Malzacher, P.;Mamonov, A.;Manko, V.;Manso, F.;Manzari, V.;Mao, Y.;Marchisone, M.;Mareš, J.;Margagliotti, G. V.;Margotti, A.;Margutti, J.;Marín, A.;Markert, C.;Marquard, M.;Martin, N. A.;Martinengo, P.;Martínez, M. I.;Martínez García, G.;Martinez Pedreira, M.;Mas, A.;Masciocchi, S.;Masera, M.;Masoni, A.;Mastroserio, A.;Matyja, A.;Mayer, C.;Mazer, J.;Mazzilli, M.;Mazzoni, M. A.;Meddi, F.;Melikyan, Y.;Menchaca-Rocha, A.;Meninno, E.;Mercado Pérez, J.;Meres, M.;Mhlanga, S.;Miake, Y.;Mieskolainen, M. M.;Mikhaylov, K.;Milano, L.;Milosevic, J.;Mischke, A.;Mishra, A. N.;Mishra, T.;Miśkowiec, D.;Mitra, J.;Mitu, C. M.;Mohammadi, N.;Mohanty, B.;Molnar, L.;Montes, E.;Moreira De Godoy, D. A.;Moreno, L. A. P.;Moretto, S.;Morreale, A.;Morsch, A.;Muccifora, V.;Mudnic, E.;Mühlheim, D.;Muhuri, S.;Mukherjee, M.;Mulligan, J. D.;Munhoz, M. G.;Münning, K.;Munzer, R. H.;Murakami, H.;Murray, S.;Musa, L.;Musinsky, J.;Myers, C. J.;Naik, B.;Nair, R.;Nandi, B. K.;Nania, R.;Nappi, E.;Naru, M. U.;Natal Da Luz, H.;Nattrass, C.;Navarro, S. R.;Nayak, K.;Nayak, R.;Nayak, T. K.;Nazarenko, S.;Nedosekin, A.;Negrao De Oliveira, R. A.;Nellen, L.;Ng, F.;Nicassio, M.;Niculescu, M.;Niedziela, J.;Nielsen, B. S.;Nikolaev, S.;Nikulin, S.;Nikulin, V.;Noferini, F.;Nomokonov, P.;Nooren, G.;Noris, J. C. C.;Norman, J.;Nyanin, A.;Nystrand, J.;Oeschler, H.;Oh, S.;Ohlson, A.;Okubo, T.;Olah, L.;Oleniacz, J.;Oliveira Da Silva, A. C.;Oliver, M. H.;Onderwaater, J.;Oppedisano, C.;Orava, R.;Oravec, M.;Ortiz Velasquez, A.;Oskarsson, A.;Otwinowski, J.;Oyama, K.;Ozdemir, M.;Pachmayer, Y.;Pacik, V.;Pagano, D.;Pagano, P.;Paić, G.;Pal, S. K.;Palni, P.;Pan, J.;Pandey, A. K.;Papikyan, V.;Pappalardo, G. S.;Pareek, P.;Park, J.;Park, W. J.;Parmar, S.;Passfeld, A.;Paticchio, V.;Patra, R. N.;Paul, B.;Pei, H.;Peitzmann, T.;Peng, X.;Pereira Da Costa, H.;Peresunko, D.;Perez Lezama, E.;Peskov, V.;Pestov, Y.;Petráček, V.;Petrov, V.;Petrovici, M.;Petta, C.;Piano, S.;Pikna, M.;Pillot, P.;Pimentel, L. O. D. L.;Pinazza, O.;Pinsky, L.;Piyarathna, D. B.;Płoskoń, M.;Planinic, M.;Pluta, J.;Pochybova, S.;Podesta-Lerma, P. L. M.;Poghosyan, M. G.;Polichtchouk, B.;Poljak, N.;Poonsawat, W.;Pop, A.;Poppenborg, H.;Porteboeuf-Houssais, S.;Porter, J.;Pospisil, J.;Prasad, S. K.;Preghenella, R.;Prino, F.;Pruneau, C. A.;Pshenichnov, I.;Puccio, M.;Puddu, G.;Pujahari, P.;Punin, V.;Putschke, J.;Qvigstad, H.;Rachevski, A.;Raha, S.;Rajput, S.;Rak, J.;Rakotozafindrabe, A.;Ramello, L.;Rami, F.;Rana, D. B.;Raniwala, R.;Raniwala, S.;Räsänen, S. S.;Rascanu, B. T.;Rathee, D.;Ratza, V.;Ravasenga, I.;Read, K. F.;Redlich, K.;Rehman, A.;Reichelt, P.;Reidt, F.;Ren, X.;Renfordt, R.;Reolon, A. R.;Reshetin, A.;Reygers, K.;Riabov, V.;Ricci, R. A.;Richert, T.;Richter, M.;Riedler, P.;Riegler, W.;Riggi, F.;Ristea, C.;Rodríguez Cahuantzi, M.;Røed, K.;Rogochaya, E.;Rohr, D.;Röhrich, D.;Ronchetti, F.;Ronflette, L.;Rosnet, P.;Rossi, A.;Roukoutakis, F.;Roy, A.;Roy, C.;Roy, P.;Rubio Montero, A. J.;Rui, R.;Russo, R.;Ryabinkin, E.;Ryabov, Y.;Rybicki, A.;Saarinen, S.;Sadhu, S.;Sadovsky, S.;Šafařík, K.;Sahlmuller, B.;Sahoo, B.;Sahoo, P.;Sahoo, R.;Sahoo, S.;Sahu, P. K.;Saini, J.;Sakai, S.;Saleh, M. A.;Salzwedel, J.;Sambyal, S.;Samsonov, V.;Sandoval, A.;Sano, M.;Sarkar, D.;Sarkar, N.;Sarma, P.;Sas, M. H. P.;Scapparone, E.;Scarlassara, F.;Scharenberg, R. P.;Schiaua, C.;Schicker, R.;Schmidt, C.;Schmidt, H. R.;Schmidt, M.;Schukraft, J.;Schutz, Y.;Schwarz, K.;Schweda, K.;Scioli, G.;Scomparin, E.;Scott, R.;Šefčík, M.;Seger, J. E.;Sekiguchi, Y.;Sekihata, D.;Selyuzhenkov, I.;Senosi, K.;Senyukov, S.;Serradilla, E.;Sett, P.;Sevcenco, A.;Shabanov, A.;Shabetai, A.;Shadura, O.;Shahoyan, R.;Shangaraev, A.;Sharma, A.;Sharma, A.;Sharma, M.;Sharma, M.;Sharma, N.;Sheikh, A. I.;Shigaki, K.;Shou, Q.;Shtejer, K.;Sibiriak, Y.;Siddhanta, S.;Sielewicz, K. M.;Siemiarczuk, T.;Silvermyr, D.;Silvestre, C.;Simatovic, G.;Simonetti, G.;Singaraju, R.;Singh, R.;Singhal, V.;Sinha, T.;Sitar, B.;Sitta, M.;Skaali, T. B.;Slupecki, M.;Smirnov, N.;Snellings, R. J. M.;Snellman, T. W.;Song, J.;Song, M.;Song, Z.;Soramel, F.;Sorensen, S.;Sozzi, F.;Spiriti, E.;Sputowska, I.;Srivastava, B. K.;Stachel, J.;Stan, I.;Stankus, P.;Stenlund, E.;Steyn, G.;Stiller, J. H.;Stocco, D.;Strmen, P.;Suaide, A. A. P.;Sugitate, T.;Suire, C.;Suleymanov, M.;Suljic, M.;Sultanov, R.;Šumbera, M.;Sumowidagdo, S.;Suzuki, K.;Swain, S.;Szabo, A.;Szarka, I.;Szczepankiewicz, A.;Szymanski, M.;Tabassam, U.;Takahashi, J.;Tambave, G. J.;Tanaka, N.;Tarhini, M.;Tariq, M.;Tarzila, M. G.;Tauro, A.;Tejeda Muñoz, G.;Telesca, A.;Terasaki, K.;Terrevoli, C.;Teyssier, B.;Thakur, D.;Thomas, D.;Tieulent, R.;Tikhonov, A.;Timmins, A. R.;Toia, A.;Tripathy, S.;Trogolo, S.;Trombetta, G.;Trubnikov, V.;Trzaska, W. H.;Tsuji, T.;Tumkin, A.;Turrisi, R.;Tveter, T. S.;Ullaland, K.;Umaka, E. N.;Uras, A.;Usai, G. L.;Utrobicic, A.;Vala, M.;Van Der Maarel, J.;Van Hoorne, J. W.;Van Leeuwen, M.;Vanat, T.;Vande Vyvre, P.;Varga, D.;Vargas, A.;Vargyas, M.;Varma, R.;Vasileiou, M.;Vasiliev, A.;Vauthier, A.;Vázquez Doce, O.;Vechernin, V.;Veen, A. M.;Velure, A.;Vercellin, E.;Vergara Limón, S.;Vernet, R.;Vértesi, R.;Vickovic, L.;Vigolo, S.;Viinikainen, J.;Vilakazi, Z.;Villalobos Baillie, O.;Villatoro Tello, A.;Vinogradov, A.;Vinogradov, L.;Virgili, T.;Vislavicius, V.;Vodopyanov, A.;Völkl, M. A.;Voloshin, K.;Voloshin, S. A.;Volpe, G.;Von Haller, B.;Vorobyev, I.;Voscek, D.;Vranic, D.;Vrláková, J.;Wagner, B.;Wagner, J.;Wang, H.;Wang, M.;Watanabe, D.;Watanabe, Y.;Weber, M.;Weber, S. G.;Weiser, D. F.;Wessels, J. P.;Westerhoff, U.;Whitehead, A. M.;Wiechula, J.;Wikne, J.;Wilk, G.;Wilkinson, J.;Willems, G. A.;Williams, M. C. S.;Windelband, B.;Winn, M.;Yalcin, S.;Yang, P.;Yano, S.;Yin, Z.;Yokoyama, H.;Yoo, I. -K.;Yoon, J. H.;Yurchenko, V.;Zaccolo, V.;Zaman, A.;Zampolli, C.;Zanoli, H. J. C.;Zaporozhets, S.;Zardoshti, N.;Zarochentsev, A.;Závada, P.;Zaviyalov, N.;Zbroszczyk, H.;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, M. B.;Zinovjev, G.;Zmeskal, J.
2017-01-01
Abstract
In two-particle angular correlation measurements, jets give rise to a near-side peak, formed by particles associated to a higher-pT trigger particle. Measurements of these correlations as a function of pseudorapidity ( η) and azimuthal ( φ) differences are used to extract the centrality and pT dependence of the shape of the near-side peak in the pT range 1 < pT < 8 GeV/c in Pb-Pb and pp collisions at √sNN = 2.76 TeV. A combined fit of the near-side peak and long-range correlations is applied to the data and the peak shape is quantified by the variance of the distributions. While the width of the peak in the φ direction is almost independent of centrality, a significant broadening in the η direction is found from peripheral to central collisions. This feature is prominent for the low-pT region and vanishes above 4 GeV/c. The widths measured in peripheral collisions are equal to those in pp collisions in the φ direction and above 3 GeV/c in the η direction. Furthermore, for the 10% most central collisions and 1 < pT,assoc < 2 GeV/c, 1 < pT,trig < 3 GeV/c, a departure from a Gaussian shape is found: a depletion develops around the center of the peak. The results are compared to A Multi-Phase Transport (AMPT) model simulation as well as other theoretical calculations indicating that the broadening and the development of the depletion are connected to the strength of radial and longitudinal flow.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2916460
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