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Catalogo dei prodotti della ricerca
The pseudorapidity density of charged particles,
dNch/dη, in p–Pb collisions has been measured at a centre-
of-mass energy per nucleon–nucleon pair of √sNN = 8.16
TeV at mid-pseudorapidity for non-single-diffractive events.
The results cover 3.6 units of pseudorapidity, |η| < 1.8. The
dNch/dη value is 19.1 ± 0.7 at |η| < 0.5. This quantity
divided by 〈Npart〉/2 is 4.73 ± 0.20, where 〈Npart〉is the aver-
age number of participating nucleons, is 9.5% higher than
the corresponding value for p–Pb collisions at √sNN = 5.02
TeV. Measurements are compared with models based on dif-
ferent mechanisms for particle production. All models agree
within uncertainties with data in the Pb-going side, while
HIJING overestimates, showing a symmetric behaviour, and
EPOS underestimates the p-going side of the dNch/dη dis-
tribution. Saturation-based models reproduce the distribu-
tions well for η > −1.3. The dNch/dη is also measured for
different centrality estimators, based both on the charged-
particle multiplicity and on the energy deposited in the Zero-
Degree Calorimeters. A study of the implications of the large
multiplicity fluctuations due to the small number of partic-
ipants for systems like p–Pb in the centrality calculation
for multiplicity-based estimators is discussed, demonstrat-
ing the advantages of determining the centrality with energy
deposited near beam rapidity.
The pseudorapidity density of charged particles, d Nch /dη, in p–Pb collisions has been measured at a centre- of-mass energy per nucleon–nucleon pair of √sNN = 8.16 TeV at mid-pseudorapidity for non-single-diffractive events. The results cover 3.6 units of pseudorapidity, |η| < 1.8. The dNch/dη value is 19.1 ± 0.7 at |η| < 0.5. This quantity divided by ⟨Npart⟩/2 is 4.73±0.20, where ⟨Npart⟩is the aver- age number of participating nucleons, is 9.5% higher than the corresponding value for p–Pb collisions at √sNN = 5.02 TeV. Measurements are compared with models based on dif- ferent mechanisms for particle production. All models agree within uncertainties with data in the Pb-going side, while HIJING overestimates, showing a symmetric behaviour, and EPOS underestimates the p-going side of the d Nch /dη dis- tribution. Saturation-based models reproduce the distribu- tions well for η > −1.3. The dNch/dη is also measured for different centrality estimators, based both on the charged- particle multiplicity and on the energy deposited in the Zero- Degree Calorimeters. A study of the implications of the large multiplicity fluctuations due to the small number of partic- ipants for systems like p–Pb in the centrality calculation for multiplicity-based estimators is discussed, demonstrat- ing the advantages of determining the centrality with energy deposited near beam rapidity.
Charged-particle pseudorapidity density at mid-rapidity in p–Pb collisions at √sNN = 8.16 TeV / Acharya, S., Acosta, F.-T., Adamová, D., Adhya, S.P., Adler, A., Adolfsson, J., Aggarwal, M.M., Rinella, G.A., Agnello, M., Ahammed, Z., Ahmad, S., Ahn, S.U., Aiola, S., Akindinov, A., Al-Turany, M., Alam, S.N., Albuquerque, D.S.D., Aleksandrov, D., Alessandro, B., Alfanda, H.M., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 79:4(2019). [10.1140/epjc/s10052-019-6801-9]
Charged-particle pseudorapidity density at mid-rapidity in p–Pb collisions at √sNN = 8.16 TeV
Acharya, S.;Acosta, F. -T.;Adamová, D.;Adhya, S. P.;Adler, A.;Adolfsson, J.;Aggarwal, M. M.;Rinella, G. A.;Agnello, M.;Ahammed, Z.;Ahmad, S.;Ahn, S. U.;Aiola, S.;Akindinov, A.;Al-Turany, M.;Alam, S. N.;Albuquerque, D. S. D.;Aleksandrov, D.;Alessandro, B.;Alfanda, H. M.;Molina, R. A.;Ali, Y.;Alici, A.;Alkin, A.;Alme, J.;Alt, T.;Altenkamper, L.;Altsybeev, I.;Anaam, M. N.;Andrei, C.;Andreou, D.;Andrews, H. A.;Andronic, A.;Angeletti, M.;Anguelov, V.;Anson, C.;Antičić, T.;Antinori, F.;Antonioli, P.;Anwar, R.;Apadula, N.;Aphecetche, L.;Appelshäuser, H.;Arcelli, S.;Arnaldi, R.;Arratia, M.;Arsene, I. C.;Arslandok, M.;Augustinus, A.;Averbeck, R.;Azmi, M. D.;Badalà, A.;Baek, Y. W.;Bagnasco, S.;Bailhache, R.;Bala, R.;Baldisseri, A.;Ball, M.;Baral, R. C.;Barbera, R.;Barioglio, L.;Barnaföldi, G. G.;Barnby, L. S.;Barret, V.;Bartalini, P.;Barth, K.;Bartsch, E.;Bastid, N.;Basu, S.;Batigne, G.;Batyunya, B.;Batzing, P. C.;Bauri, D.;Bazo Alba, J. L.;Bearden, I. G.;Beck, H.;Bedda, C.;Behera, N. K.;Belikov, I.;Bellini, F.;Martinez, H. B.;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.;Bhatt, H.;Bhattacharjee, B.;Bianchi, A.;Bianchi, L.;Bianchi, N.;Bielčík, J.;Bielčíková, J.;Bilandzic, A.;Biro, G.;Biswas, R.;Biswas, S.;Blair, J. T.;Blau, D.;Blume, C.;Boca, G.;Bock, F.;Bogdanov, A.;Boldizsár, L.;Bolozdynya, A.;Bombara, M.;Bonomi, G.;Bonora, M.;Borel, H.;Borissov, A.;Borri, M.;Botta, E.;Bourjau, C.;Bratrud, L.;Braun-Munzinger, P.;Bregant, M.;Broker, T. A.;Broz, M.;Brucken, E. J.;Bruna, E.;Bruno, G. E.;Budnikov, D.;Buesching, H.;Bufalino, S.;Buhler, P.;Buncic, P.;Busch, O.;Buthelezi, Z.;Butt, J. B.;Buxton, J. T.;Cabala, J.;Caffarri, D.;Caines, H.;Caliva, A.;Villar, E. C.;Camacho, R. S.;Camerini, P.;Capon, A. A.;Carnesecchi, F.;Castellanos, J. C.;Castro, A. J.;Casula, E. A. R.;Sanchez, C. C.;Chakraborty, P.;Chandra, S.;Chang, B.;Chang, W.;Chapeland, S.;Chartier, M.;Chattopadhyay, S.;Chattopadhyay, S.;Chauvin, A.;Cheshkov, C.;Cheynis, B.;Barroso, V. C.;Chinellato, D. D.;Cho, S.;Chochula, P.;Chowdhury, T.;Christakoglou, P.;Christensen, C. H.;Christiansen, P.;Chujo, T.;Cicalo, C.;Cifarelli, L.;Cindolo, F.;Cleymans, J.;Colamaria, F.;Colella, D.;Collu, A.;Colocci, M.;Concas, M.;Balbastre, G. C.;del Valle, Z. C.;Contreras, J. G.;Cormier, T. M.;Morales, Y. C.;Cortese, P.;Cosentino, M. R.;Costa, F.;Costanza, S.;Crkovská, J.;Crochet, P.;Cuautle, E.;Cunqueiro, L.;Dabrowski, D.;Dahms, T.;Dainese, A.;Damas, F. P. A.;Dani, S.;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.;Degenhardt, H. F.;Deisting, A.;Deloff, A.;Delsanto, S.;Dhankher, P.;Di Bari, D.;Di Mauro, A.;Diaz, R. A.;Dietel, T.;Dillenseger, P.;Ding, Y.;Divià, R.;Djuvsland, Ø.;Dobrin, A.;Gimenez, D. D.;Dönigus, B.;Dordic, O.;Dubey, A. K.;Dubla, A.;Dudi, S.;Duggal, A. K.;Dukhishyam, M.;Dupieux, P.;Ehlers, R. J.;Elia, D.;Engel, H.;Epple, E.;Erazmus, B.;Erhardt, F.;Erokhin, A.;Ersdal, M. R.;Espagnon, B.;Eulisse, G.;Eum, J.;Evans, D.;Evdokimov, S.;Fabbietti, L.;Faggin, M.;Faivre, J.;Fantoni, A.;Fasel, M.;Feldkamp, L.;Feliciello, A.;Feofilov, G.;Téllez, A. F.;Ferrero, A.;Ferretti, A.;Festanti, A.;Feuillard, V. J. G.;Figiel, J.;Filchagin, S.;Finogeev, D.;Fionda, F. M.;Fiorenza, G.;Flor, F.;Floris, M.;Foertsch, S.;Foka, P.;Fokin, S.;Fragiacomo, E.;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.;Galvan, C. D.;Ganoti, P.;Garabatos, C.;Garcia-Solis, E.;Garg, K.;Gargiulo, C.;Garner, K.;Gasik, P.;Gauger, E. F.;Ducati, M. B. G.;Germain, M.;Ghosh, J.;Ghosh, P.;Ghosh, S. K.;Gianotti, P.;Giubellino, P.;Giubilato, P.;Glässel, P.;Coral, D. M. G.;Ramirez, A. G.;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.;Gronefeld, J. M.;Grosa, F.;Grosse-Oetringhaus, J. F.;Grosso, R.;Guernane, R.;Guerzoni, B.;Guittiere, M.;Gulbrandsen, K.;Gunji, T.;Gupta, A.;Gupta, R.;Guzman, I. B.;Haake, R.;Habib, M. K.;Hadjidakis, C.;Hamagaki, H.;Hamar, G.;Hamid, M.;Hamon, J. C.;Hannigan, R.;Haque, M. R.;Harlenderova, A.;Harris, J. W.;Harton, A.;Hassan, H.;Hatzifotiadou, D.;Hauer, P.;Hayashi, S.;Heckel, S. T.;Hellbär, E.;Helstrup, H.;Herghelegiu, A.;Hernandez, E. G.;Corral, G. H.;Herrmann, F.;Hetland, K. F.;Hilden, T. E.;Hillemanns, H.;Hills, C.;Hippolyte, B.;Hohlweger, B.;Horak, D.;Hornung, S.;Hosokawa, R.;Hota, J.;Hristov, P.;Huang, C.;Hughes, C.;Huhn, P.;Humanic, T. J.;Hushnud, H.;Husova, L. A.;Hussain, N.;Hussain, T.;Hutter, D.;Hwang, D. S.;Iddon, J. P.;Ilkaev, R.;Inaba, M.;Ippolitov, M.;Islam, M. S.;Ivanov, M.;Ivanov, V.;Izucheev, V.;Jacak, B.;Jacazio, N.;Jacobs, P. M.;Jadhav, M. B.;Jadlovska, S.;Jadlovsky, J.;Jaelani, S.;Jahnke, C.;Jakubowska, M. J.;Janik, M. A.;Jercic, M.;Jevons, O.;Jimenez Bustamante, R. T.;Jin, M.;Jones, P. G.;Jusko, A.;Kalinak, P.;Kalweit, A.;Kang, J. H.;Kaplin, V.;Kar, S.;Karasu Uysal, A.;Karavichev, O.;Karavicheva, T.;Karczmarczyk, P.;Karpechev, E.;Kebschull, U.;Keidel, R.;Keil, M.;Ketzer, B.;Khabanova, Z.;Khan, A. M.;Khan, S.;Khan, S. A.;Khanzadeev, A.;Kharlov, Y.;Khatun, A.;Khuntia, A.;Kielbowicz, M. M.;Kileng, B.;Kim, B.;Kim, B.;Kim, D.;Kim, D. J.;Kim, E. J.;Kim, H.;Kim, J. S.;Kim, J.;Kim, J.;Kim, M.;Kim, S.;Kim, T.;Kim, T.;Kindra, K.;Kirsch, S.;Kisel, I.;Kiselev, S.;Kisiel, A.;Klay, J. L.;Klein, C.;Klein, J.;Klein, S.;Klein-Bösing, C.;Klewin, S.;Kluge, A.;Knichel, M. L.;Knospe, A. G.;Kobdaj, C.;Kofarago, M.;Köhler, M. K.;Kollegger, T.;Kondratyeva, N.;Kondratyuk, E.;Konopka, P. J.;Konyushikhin, M.;Koska, L.;Kovalenko, O.;Kovalenko, V.;Kowalski, M.;Králik, I.;Kravčáková, A.;Kreis, L.;Krivda, M.;Krizek, F.;Krüger, M.;Kryshen, E.;Krzewicki, M.;Kubera, A. M.;Kučera, V.;Kuhn, C.;Kuijer, P. G.;Kumar, J.;Kumar, L.;Kumar, S.;Kundu, S.;Kurashvili, P.;Kurepin, A.;Kurepin, A. B.;Kushpil, S.;Kvapil, J.;Kweon, M. J.;Kwon, Y.;La Pointe, S. L.;La Rocca, P.;Lai, Y. S.;Langoy, R.;Lapidus, K.;Lardeux, A.;Larionov, P.;Laudi, E.;Lavicka, R.;Lazareva, T.;Lea, R.;Leardini, L.;Lee, S.;Lehas, F.;Lehner, S.;Lehrbach, J.;Lemmon, R. C.;Monzón, I. L.;Lévai, P.;Li, X.;Li, X. L.;Lien, J.;Lietava, R.;Lim, B.;Lindal, S.;Lindenstruth, V.;Lindsay, S. W.;Lippmann, C.;Lisa, M. A.;Litichevskyi, V.;Liu, A.;Ljunggren, H. M.;Llope, W. J.;Lodato, D. F.;Loginov, V.;Loizides, C.;Loncar, P.;Lopez, X.;Torres, E. L.;Luettig, P.;Luhder, J. R.;Lunardon, M.;Luparello, G.;Lupi, M.;Maevskaya, A.;Mager, M.;Mahmood, S. M.;Maire, A.;Majka, R. D.;Malaev, M.;Malik, Q. W.;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.;Martinez, J. L.;Martínez, M. I.;Martínez García, G.;Pedreira, M. M.;Masciocchi, S.;Masera, M.;Masoni, A.;Massacrier, L.;Masson, E.;Mastroserio, A.;Mathis, A. M.;Matuoka, P. F. T.;Matyja, A.;Mayer, C.;Mazzilli, M.;Mazzoni, M. A.;Meddi, F.;Melikyan, Y.;Menchaca-Rocha, A.;Meninno, E.;Meres, M.;Mhlanga, S.;Miake, Y.;Micheletti, L.;Mieskolainen, M. M.;Mihaylov, D. L.;Mikhaylov, K.;Mischke, A.;Mishra, A. N.;Miśkowiec, D.;Mitra, J.;Mitu, C. M.;Mohammadi, N.;Mohanty, A. P.;Mohanty, B.;Khan, M. M.;Mondal, M. M.;Mordasini, C.;De Godoy, D. A. M.;Moreno, L. A. P.;Moretto, S.;Morreale, A.;Morsch, A.;Mrnjavac, T.;Muccifora, V.;Mudnic, E.;Mühlheim, D.;Muhuri, S.;Mulligan, J. D.;Munhoz, M. G.;Münning, K.;Munzer, R. H.;Murakami, H.;Murray, S.;Musa, L.;Musinsky, J.;Myers, C. J.;Myrcha, J. W.;Naik, B.;Nair, R.;Nandi, B. K.;Nania, R.;Nappi, E.;Naru, M. U.;Nassirpour, A. F.;da Luz, H. N.;Nattrass, C.;Navarro, S. R.;Nayak, K.;Nayak, R.;Nayak, T. K.;Nazarenko, S.;De Oliveira, R. A. N.;Nellen, L.;Nesbo, S. V.;Neskovic, G.;Ng, F.;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.;Ogino, M.;Ohlson, A.;Oleniacz, J.;Da Silva, A. C. O.;Oliver, M. H.;Onderwaater, J.;Oppedisano, C.;Orava, R.;Oravec, M.;Velasquez, A. O.;Oskarsson, A.;Otwinowski, J.;Oyama, K.;Pachmayer, Y.;Pacik, V.;Pagano, D.;Paić, G.;Palni, P.;Pan, J.;Pandey, A. K.;Panebianco, S.;Papikyan, V.;Pareek, P.;Park, J.;Parkkila, J. E.;Parmar, S.;Passfeld, A.;Pathak, S. P.;Patra, R. N.;Paul, B.;Pei, H.;Peitzmann, T.;Peng, X.;Pereira, L. G.;Da Costa, H. P.;Peresunko, D.;Perez, G. M.;Lezama, E. P.;Peskov, V.;Pestov, Y.;Petráček, V.;Petrovici, M.;Pezzi, R. P.;Piano, S.;Pikna, M.;Pillot, P.;Pimentel, L. O. D. L.;Pinazza, O.;Pinsky, L.;Pisano, S.;Piyarathna, D. B.;Płoskoń, M.;Planinic, M.;Pliquett, F.;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.;Pozdniakov, V.;Prasad, S. K.;Preghenella, R.;Prino, F.;Pruneau, C. A.;Pshenichnov, I.;Puccio, M.;Punin, V.;Puranapanda, K.;Putschke, J.;Quishpe, R. E.;Raha, S.;Rajput, S.;Rak, J.;Rakotozafindrabe, A.;Ramello, L.;Rami, F.;Raniwala, R.;Raniwala, S.;Räsänen, S. S.;Rascanu, B. T.;Rath, R.;Ratza, V.;Ravasenga, I.;Read, K. F.;Redlich, K.;Rehman, A.;Reichelt, P.;Reidt, F.;Ren, X.;Renfordt, R.;Reshetin, A.;Revol, J. -P.;Reygers, K.;Riabov, V.;Richert, T.;Richter, M.;Riedler, P.;Riegler, W.;Riggi, F.;Ristea, C.;Rode, S. P.;Cahuantzi, M. R.;Røed, K.;Rogalev, R.;Rogochaya, E.;Rohr, D.;Röhrich, D.;Rokita, P. S.;Ronchetti, F.;Rosas, E. D.;Roslon, K.;Rosnet, P.;Rossi, A.;Rotondi, A.;Roukoutakis, F.;Roy, A.;Roy, P.;Rueda, O. V.;Rui, R.;Rumyantsev, B.;Rustamov, A.;Ryabinkin, E.;Ryabov, Y.;Rybicki, A.;Saarinen, S.;Sadhu, S.;Sadovsky, S.;Šafařík, K.;Saha, S. K.;Sahoo, B.;Sahoo, P.;Sahoo, R.;Sahoo, S.;Sahu, P. K.;Saini, J.;Sakai, S.;Saleh, M. A.;Sambyal, S.;Samsonov, V.;Sandoval, A.;Sarkar, A.;Sarkar, D.;Sarkar, N.;Sarma, P.;Sarti, V. M.;Sas, M. H. P.;Scapparone, E.;Schaefer, B.;Schambach, J.;Scheid, H. S.;Schiaua, C.;Schicker, R.;Schmidt, C.;Schmidt, H. R.;Schmidt, M. O.;Schmidt, M.;Schmidt, N. V.;Schukraft, J.;Schutz, Y.;Schwarz, K.;Schweda, K.;Scioli, G.;Scomparin, E.;Šefčík, M.;Seger, J. E.;Sekiguchi, Y.;Sekihata, D.;Selyuzhenkov, I.;Senyukov, S.;Serradilla, E.;Sett, P.;Sevcenco, A.;Shabanov, A.;Shabetai, A.;Shahoyan, R.;Shaikh, W.;Shangaraev, A.;Sharma, A.;Sharma, A.;Sharma, M.;Sharma, N.;Sheikh, A. I.;Shigaki, K.;Shimomura, M.;Shirinkin, S.;Shou, Q.;Sibiriak, Y.;Siddhanta, S.;Siemiarczuk, T.;Silvermyr, D.;Simatovic, G.;Simonetti, G.;Singh, 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.;Sochan, J.;Soncco, C.;Song, J.;Songmoolnak, A.;Soramel, F.;Sorensen, S.;Sozzi, F.;Sputowska, I.;Stachel, J.;Stan, I.;Stankus, P.;Stenlund, E.;Stocco, D.;Storetvedt, M. M.;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.;Tabassam, U.;Takahashi, J.;Tambave, G. J.;Tanaka, N.;Tarhini, M.;Tarzila, M. G.;Tauro, A.;Muñoz, G. T.;Telesca, A.;Terrevoli, C.;Thakur, D.;Thakur, S.;Thomas, D.;Thoresen, F.;Tieulent, R.;Tikhonov, A.;Timmins, A. R.;Toia, A.;Topilskaya, N.;Toppi, M.;Torres, S. R.;Tripathy, S.;Tripathy, T.;Trogolo, S.;Trombetta, G.;Tropp, L.;Trubnikov, V.;Trzaska, W. H.;Trzcinski, T. P.;Trzeciak, B. 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2019
Abstract
The pseudorapidity density of charged particles,
dNch/dη, in p–Pb collisions has been measured at a centre-
of-mass energy per nucleon–nucleon pair of √sNN = 8.16
TeV at mid-pseudorapidity for non-single-diffractive events.
The results cover 3.6 units of pseudorapidity, |η| < 1.8. The
dNch/dη value is 19.1 ± 0.7 at |η| < 0.5. This quantity
divided by 〈Npart〉/2 is 4.73 ± 0.20, where 〈Npart〉is the aver-
age number of participating nucleons, is 9.5% higher than
the corresponding value for p–Pb collisions at √sNN = 5.02
TeV. Measurements are compared with models based on dif-
ferent mechanisms for particle production. All models agree
within uncertainties with data in the Pb-going side, while
HIJING overestimates, showing a symmetric behaviour, and
EPOS underestimates the p-going side of the dNch/dη dis-
tribution. Saturation-based models reproduce the distribu-
tions well for η > −1.3. The dNch/dη is also measured for
different centrality estimators, based both on the charged-
particle multiplicity and on the energy deposited in the Zero-
Degree Calorimeters. A study of the implications of the large
multiplicity fluctuations due to the small number of partic-
ipants for systems like p–Pb in the centrality calculation
for multiplicity-based estimators is discussed, demonstrat-
ing the advantages of determining the centrality with energy
deposited near beam rapidity.
The pseudorapidity density of charged particles, d Nch /dη, in p–Pb collisions has been measured at a centre- of-mass energy per nucleon–nucleon pair of √sNN = 8.16 TeV at mid-pseudorapidity for non-single-diffractive events. The results cover 3.6 units of pseudorapidity, |η| < 1.8. The dNch/dη value is 19.1 ± 0.7 at |η| < 0.5. This quantity divided by ⟨Npart⟩/2 is 4.73±0.20, where ⟨Npart⟩is the aver- age number of participating nucleons, is 9.5% higher than the corresponding value for p–Pb collisions at √sNN = 5.02 TeV. Measurements are compared with models based on dif- ferent mechanisms for particle production. All models agree within uncertainties with data in the Pb-going side, while HIJING overestimates, showing a symmetric behaviour, and EPOS underestimates the p-going side of the d Nch /dη dis- tribution. Saturation-based models reproduce the distribu- tions well for η > −1.3. The dNch/dη is also measured for different centrality estimators, based both on the charged- particle multiplicity and on the energy deposited in the Zero- Degree Calorimeters. A study of the implications of the large multiplicity fluctuations due to the small number of partic- ipants for systems like p–Pb in the centrality calculation for multiplicity-based estimators is discussed, demonstrat- ing the advantages of determining the centrality with energy deposited near beam rapidity.
quark gluon plasma
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Charged-particle pseudorapidity density at mid-rapidity in p–Pb collisions at √sNN = 8.16 TeV / Acharya, S., Acosta, F.-T., Adamová, D., Adhya, S.P., Adler, A., Adolfsson, J., Aggarwal, M.M., Rinella, G.A., Agnello, M., Ahammed, Z., Ahmad, S., Ahn, S.U., Aiola, S., Akindinov, A., Al-Turany, M., Alam, S.N., Albuquerque, D.S.D., Aleksandrov, D., Alessandro, B., Alfanda, H.M., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 79:4(2019). [10.1140/epjc/s10052-019-6801-9]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1469828
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simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.
