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Catalogo dei prodotti della ricerca
Background: In the context of the investigation of the quark gluon plasma produced in heavy-ion collisions, hadrons containing heavy (charm or beauty) quarks play a special role for the characterization of the hot and dense medium created in the interaction. The measurement of the production of charm and beauty hadrons in proton-proton collisions, besides providing the necessary reference for the studies in heavy-ion reactions, constitutes an important test of perturbative quantum chromodynamics (pQCD) calculations. Heavy-flavor production in proton-nucleus collisions is sensitive to the various effects related to the presence of nuclei in the colliding system, commonly denoted cold-nuclear-matter effects. Most of these effects are expected to modify open-charm production at low transverse momenta (p(T)) and, so far, no measurement of D-meson production down to zero transverse momentum was available at mid-rapidity at the energies attained at the CERN Large Hadron Collider (LHC). Purpose: The measurements of the production cross sections of promptly produced charmed mesons in p-Pb collisions at the LHC down to p(T) = 0 and the comparison to the results from pp interactions are aimed at the assessment of cold-nuclear-matter effects on open-charm production, which is crucial for the interpretation of the results from Pb-Pb collisions. The prompt charmed mesons D-0, D+, D*+, and D-s(+) were measured at mid-rapidity in p-Pb collisions at a center-of-mass energy per nucleon pair root S-NN = 5.02 TeV with the ALICE detector at the LHC. D mesons were reconstructed from their decays D-0 -> K- pi(+), D+ -> K- pi(+) pi(+), D*+ -> D-0 pi(+), D-S(+) -> phi pi(+) -> K- K+ pi(+), and their charge conjugates, using an analysis method based on the selection of decay topologies displaced from the interaction vertex. In addition, the prompt D 0 production cross section was measured in pp collisions at root S = 7 TeV and p-Pb collisions at root S-NN = 5.02 TeV down to p(T) = 0 using an analysis technique that is based on the estimation and subtraction of the combinatorial background, without reconstruction of the D-0 decay vertex. Results: The production cross section in pp collisions is described within uncertainties by different implementations of pQCD calculations down to p(T) = 0. This allowed also a determination of the total c (c) over bar production cross section in pp collisions, which is more precise than previous ALICE measurements because it is not affected by uncertainties owing to the extrapolation to pT = 0. The nuclear modification factor R-pPb( p(T)), defined as the ratio of the p(T)-differential D meson cross section in p-Pb collisions and that in pp collisions scaled by the mass number of the Pb nucleus, was calculated for the four D-meson species and found to be compatible with unity within uncertainties. The results are compared to theoretical calculations that include cold-nuclear-matter effects and to transport model calculations incorporating the interactions of charm quarks with an expanding deconfined medium. Conclusions: These measurements add experimental evidence that the modification of the D-meson transverse momentum distributions observed in Pb-Pb collisions with respect to pp interactions is due to strong final-state effects induced by the interactions of the charm quarks with the hot and dense partonic medium created in ultrarelativistic heavy-ion collisions. The current precision of the measurement does not allow us to draw conclusions on the role of the different cold-nuclear-matter effects and on the possible presence of additional hot-medium effects in p-Pb collisions. However, the analysis technique without decay-vertex reconstruction, applied on future larger data samples, should provide access to the physics-rich range down to p(T) = 0.
D-meson production in p-Pb collisions at root S-NN=5.02 TeV and in pp collisions at root S=7 TeV / Adam, J.; Adamova, D.; Aggarwal, M. M.; Rinella, G. Aglieri; 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.; Molina, R. Alfaro; Alici, A.; Alkin, A.; Alme, J.; Alt, T.; Altinpinar, S.; Altsybeev, I.; Prado, C. Alves Garcia; Andrei, C.; Andronic, A.; Anguelov, V.; Anticic, T.; Antinori, F.; Antonioli, P.; Aphecetche, L.; Appelshaeuser, H.; Arcelli, S.; Arnaldi, R.; Arnold, O. W.; Arsene, I. C.; Arslandok, M.; Audurier, B.; Augustinus, A.; Averbeck, R.; Azmi, M. D.; Badala, A.; Baek, Y. W.; Bagnasco, S.; Bailhache, R.; Bala, R.; Balasubramanian, S.; Baldisseri, A.; Baral, R. C.; Barbano, A. M.; Barbera, R.; Barile, F.; Barnafoldi, 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.; Camejo, A. Batista; Batyunya, B.; Batzing, P. C.; Bearden, I. G.; Beck, H.; Bedda, C.; Behera, N. K.; Belikov, I.; Bellini, F.; Bello Martinez, H.; Bellwied, R.; Belmont, R.; Belmont-Moreno, E.; Beltran, L. G. E.; Belyaev, V.; Bencedi, G.; Beole, S.; Berceanu, I.; 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.; Bielcik, J.; Bielcikova, J.; Bilandzic, A.; Biro, G.; Biswas, R.; Biswas, S.; Bjelogrlic, S.; Blair, J. T.; Blau, D.; Blume, C.; Bock, F.; Bogdanov, A.; Boggild, H.; Boldizsar, L.; Bombara, M.; Bonora, M.; Book, J.; Borel, H.; Borissov, A.; Borri, M.; Bossu, F.; Botta, E.; Bourjau, C.; Braun-Munzinger, P.; Bregant, M.; Breitner, T.; Broker, T. A.; Browning, T. A.; Broz, M.; Brucken, E. J.; Bruna, E.; Bruno, G. E.; Budnikov, D.; Buesching, H.; Bufalino, S.; Buncic, P.; Busch, O.; Buthelezi, Z.; Butt, J. B.; Buxton, J. T.; Cabala, J.; Caffarri, D.; Cai, X.; Caines, H.; Diaz, L. Calero; Caliva, A.; Calvo Villar, E.; Camerini, P.; Carena, F.; Carena, W.; Carnesecchi, F.; Castellanos, J. Castillo; 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.; Barroso, V. Chibante; 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.; Balbastre, G. Conesa; del Valle, Z. Conesa; Connors, M. E.; Contreras, J. G.; Cormier, T. M.; Morales, Y. Corrales; Cortes Maldonado, I.; Cortese, P.; Cosentino, M. R.; Costa, F.; Crkovska, J.; Crochet, P.; Albino, R. Cruz; 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.; Denes, E.; Deplano, C.; Dhankher, P.; Di Bari, D.; Di Mauro, A.; Di Nezza, P.; Di Ruzza, B.; Corchero, M. A. Diaz; Dietel, T.; Dillenseger, P.; Divia, R.; Djuvsland, O.; Dobrin, A.; Gimenez, D. Domenicis; Doenigus, B.; Dordic, O.; Drozhzhova, T.; Dubey, A. K.; Dubla, A.; Ducroux, L.; Dupieux, P.; Ehlers, R. J.; Elia, D.; Endress, E.; Engel, H.; Epple, E.; Erazmus, B.; Erdemir, I.; Erhardt, F.; Espagnon, B.; Estienne, M.; Esumi, S.; 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.; Fernandez Tellez, 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.; Fleck, M. G.; 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.; Girard, M. Fusco; Gaardhoje, 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.; Gargiulo, C.; Gasik, P.; Gauger, E. F.; Germain, M.; Gheata, M.; Ghosh, P.; Ghosh, S. K.; Gianotti, P.; Giubellino, P.; Giubilato, P.; Gladysz-Dziadus, E.; Glaessel, P.; Coral, D. M. Gomez; Ramirez, A. Gomez; Gonzalez, A. S.; Gonzalez, V.; Gonzalez-Zamora, P.; Gorbunov, S.; Gorlich, L.; Gotovac, S.; Grabski, V.; Grachov, O. A.; Graczykowski, L. K.; Graham, K. L.; Grelli, A.; Grigoras, A.; Grigoras, C.; Grigoriev, V.; Grigoryan, A.; Grigoryan, S.; Grinyov, B.; Grion, N.; Gronefeld, J. M.; Grosa, F.; Grosse-Oetringhaus, J. F.; Grosso, R.; Gruber, L.; Guber, F.; Guernane, R.; Guerzoni, B.; Gulbrandsen, K.; Gunji, T.; Gupta, A.; Gupta, R.; Haake, R.; Hadjidakis, C.; Haiduc, M.; Hamagaki, H.; Hamar, G.; Hamon, J. C.; Harris, J. W.; Harton, A.; Hatzifotiadou, D.; Hayashi, S.; Heckel, S. T.; Hellbaer, E.; Helstrup, H.; Herghelegiu, A.; Corral, G. Herrera; Hess, B. A.; Hetland, K. F.; Hillemanns, H.; Hippolyte, B.; Horak, D.; Hosokawa, R.; Hristov, P.; Hughes, C.; Humanic, T. J.; Hussain, N.; Hussain, T.; Hutter, D.; Hwang, D. S.; Ilkaev, R.; Inaba, M.; Incani, E.; Ippolitov, M.; Irfan, M.; Isakov, V.; 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.; Bustamante, R. T. Jimenez; Jones, P. G.; Jusko, A.; Kalinak, P.; Kalweit, A.; Kang, J. H.; Kaplin, V.; Kar, S.; Uysal, A. Karasu; Karavichev, O.; Karavicheva, T.; Karayan, L.; Karpechev, E.; Kebschull, U.; Keidel, R.; Keijdener, D. L. D.; Keil, M.; Khan, M. Mohisin; Khan, P.; Khan, S. A.; Khanzadeev, A.; Kharlov, Y.; Khatun, A.; Kileng, B.; Kim, D. W.; Kim, D. J.; Kim, D.; Kim, H.; Kim, J. S.; Kim, J.; Kim, M.; Kim, S.; Kim, T.; Kirsch, S.; Kisel, I.; Kiselev, S.; Kisiel, A.; Kiss, G.; Klay, J. L.; Klein, C.; Klein, J.; Klein-Boesing, 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.; Meethaleveedu, G. Koyithatta; Kralik, I.; Kravcakova, A.; Krivda, M.; Krizek, F.; Kryshen, E.; Krzewicki, M.; Kubera, A. M.; Kucera, V.; Kuhn, C.; Kuijer, P. G.; Kumar, A.; Kumar, J.; Kumar, L.; Kumar, S.; Kurashvili, P.; Kurepin, A.; Kurepin, A. B.; Kuryakin, A.; Kweon, M. J.; Kwon, Y.; La Pointe, S. L.; La Rocca, P.; Ladron de Guevara, P.; Fernandes, C. Lagana; Lakomov, I.; Langoy, R.; Lapidus, K.; Lara, C.; Lardeux, A.; Lattuca, A.; Laudi, E.; Lea, R.; Leardini, L.; Lee, S.; Lehas, F.; Lehner, S.; Lemmon, R. C.; Lenti, V.; Leogrande, E.; Leon Monzon, I.; Leon Vargas, H.; Leoncino, M.; Levai, P.; Li, S.; Li, X.; Lien, J.; Lietava, R.; Lindal, S.; Lindenstruth, V.; Lippmann, C.; Lisa, M. A.; Ljunggren, H. M.; Lodato, D. F.; Loenne, P. I.; Loginov, V.; Loizides, C.; Lopez, X.; Lopez 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.; Mares, J.; Margagliotti, G. V.; Margotti, A.; Margutti, J.; Marin, A.; Markert, C.; Marquard, M.; Martin, N. A.; Martinengo, P.; Martinez, M. I.; Garcia, G. Martinez; Pedreira, M. Martinez; Mas, A.; Masciocchi, S.; Masera, M.; Masoni, A.; Mastroserio, A.; Matyja, A.; Mayer, C.; Mazer, J.; Mazzoni, M. A.; Mcdonald, D.; Meddi, F.; Melikyan, Y.; Menchaca-Rocha, A.; Meninno, E.; Perez, J. Mercado; Meres, M.; Mhlanga, S.; Miake, Y.; Mieskolainen, M. M.; Mikhaylov, K.; Milano, L.; Milosevic, J.; Mischke, A.; Mishra, A. N.; Miskowiec, D.; Mitra, J.; Mitu, C. M.; Mohammadi, N.; Mohanty, B.; Mohler, C.; Molnar, L.; Montano Zetina, L.; Montes, E.; De Godoy, D. A. Moreira; Moreno, L. A. P.; Moretto, S.; Morreale, A.; Morsch, A.; Muccifora, V.; Mudnic, E.; Muehlheim, D.; Muhuri, S.; Mukherjee, M.; Mulligan, J. D.; Munhoz, M. G.; Muenning, K.; Munzer, R. H.; Murakami, H.; Murray, S.; Musa, L.; Musinsky, J.; Naik, B.; Nair, R.; Nandi, B. K.; Nania, R.; Nappi, E.; Naru, M. U.; da Luz, H. Natal; Nattrass, C.; Navarro, S. R.; Nayak, K.; Nayak, R.; Nayak, T. K.; Nazarenko, S.; Nedosekin, A.; De Oliveira, R. A. Negrao; 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.; Oh, S. K.; Ohlson, A.; Okatan, A.; Okubo, T.; Oleniacz, J.; Da Silva, A. C. Oliveira; Oliver, M. H.; Onderwaater, J.; Oppedisano, C.; Orava, R.; Oravec, M.; Ortiz Velasquez, A.; Oskarsson, A.; Otwinowski, J.; Oyama, K.; Ozdemir, M.; Pachmayer, Y.; Pagano, D.; Pagano, P.; Paic, G.; Pal, S. K.; Palni, P.; Pan, J.; Pandey, A. K.; Papikyan, V.; Pappalardo, G. S.; Pareek, P.; Park, W. J.; Parmar, S.; Passfeld, A.; Paticchio, V.; Patra, R. N.; Paul, B.; Pei, H.; Peitzmann, T.; Peng, X.; Da Costa, H. Pereira; Peresunko, D.; Lezama, E. Perez; Peskov, V.; Pestov, Y.; Petracek, 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.; Ploskon, 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.; Raniwala, R.; Raniwala, S.; Rasanen, S. S.; Rascanu, B. T.; Rathee, D.; Ravasenga, I.; Read, K. F.; Redlich, K.; Reed, R. J.; 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.; Rodriguez Cahuantzi, M.; Manso, A. Rodriguez; Roed, K.; Rohr, D.; Rohrich, 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.; Safarik, K.; Sahlmuller, B.; Sahoo, P.; Sahoo, R.; Sahoo, S.; Sahu, P. K.; Saini, J.; Sakai, S.; Saleh, M. A.; Salzwedel, J.; Sambyal, S.; Samsonov, V.; Sandor, L.; Sandoval, A.; Sano, M.; Sarkar, D.; Sarkar, N.; Sarma, P.; Scapparone, E.; Scarlassara, F.; Schiaua, C.; Schicker, R.; Schmidt, C.; Schmidt, H. R.; Schmidt, M.; Schuchmann, S.; Schukraft, J.; Schutz, Y.; Schwarz, K.; Schweda, K.; Scioli, G.; Scomparin, E.; Scott, R.; Sefcik, M.; Seger, J. E.; Sekiguchi, Y.; Sekihata, D.; Selyuzhenkov, I.; Senosi, K.; Senyukov, S.; Serradilla, E.; Sevcenco, A.; Shabanov, A.; Shabetai, A.; Shadura, O.; Shahoyan, R.; Shangaraev, 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.; Spyropoulou-Stassinaki, M.; 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.; Sumbera, M.; Sumowidagdo, 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 Munoz, G.; Telesca, A.; Terasaki, K.; Terrevoli, C.; Teyssier, B.; Thader, J.; Thakur, D.; Thomas, D.; Tieulent, R.; Tikhonov, A.; Timmins, A. R.; Toia, A.; Trogolo, S.; Trombetta, G.; Trubnikov, V.; Trzaska, W. 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D-meson production in p-Pb collisions at root S-NN=5.02 TeV and in pp collisions at root S=7 TeV
Adam, J.;Adamova, D.;Aggarwal, M. M.;Rinella, G. Aglieri;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.;Molina, R. Alfaro;Alici, A.;Alkin, A.;Alme, J.;Alt, T.;Altinpinar, S.;Altsybeev, I.;Prado, C. Alves Garcia;Andrei, C.;Andronic, A.;Anguelov, V.;Anticic, T.;Antinori, F.;Antonioli, P.;Aphecetche, L.;Appelshaeuser, H.;Arcelli, S.;Arnaldi, R.;Arnold, O. W.;Arsene, I. C.;Arslandok, M.;Audurier, B.;Augustinus, A.;Averbeck, R.;Azmi, M. D.;Badala, A.;Baek, Y. W.;Bagnasco, S.;Bailhache, R.;Bala, R.;Balasubramanian, S.;Baldisseri, A.;Baral, R. C.;Barbano, A. M.;Barbera, R.;Barile, F.;Barnafoldi, 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.;Camejo, A. Batista;Batyunya, B.;Batzing, P. C.;Bearden, I. G.;Beck, H.;Bedda, C.;Behera, N. K.;Belikov, I.;Bellini, F.;Bello Martinez, H.;Bellwied, R.;Belmont, R.;Belmont-Moreno, E.;Beltran, L. G. E.;Belyaev, V.;Bencedi, G.;Beole, S.;Berceanu, I.;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.;Bielcik, J.;Bielcikova, J.;Bilandzic, A.;Biro, G.;Biswas, R.;Biswas, S.;Bjelogrlic, S.;Blair, J. T.;Blau, D.;Blume, C.;Bock, F.;Bogdanov, A.;Boggild, H.;Boldizsar, L.;Bombara, M.;Bonora, M.;Book, J.;Borel, H.;Borissov, A.;Borri, M.;Bossu, F.;Botta, E.;Bourjau, C.;Braun-Munzinger, P.;Bregant, M.;Breitner, T.;Broker, T. A.;Browning, T. A.;Broz, M.;Brucken, E. J.;Bruna, E.;Bruno, G. E.;Budnikov, D.;Buesching, H.;Bufalino, S.;Buncic, P.;Busch, O.;Buthelezi, Z.;Butt, J. B.;Buxton, J. T.;Cabala, J.;Caffarri, D.;Cai, X.;Caines, H.;Diaz, L. Calero;Caliva, A.;Calvo Villar, E.;Camerini, P.;Carena, F.;Carena, W.;Carnesecchi, F.;Castellanos, J. Castillo;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.;Barroso, V. Chibante;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.;Balbastre, G. Conesa;del Valle, Z. Conesa;Connors, M. E.;Contreras, J. G.;Cormier, T. M.;Morales, Y. Corrales;Cortes Maldonado, I.;Cortese, P.;Cosentino, M. R.;Costa, F.;Crkovska, J.;Crochet, P.;Albino, R. Cruz;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.;Denes, E.;Deplano, C.;Dhankher, P.;Di Bari, D.;Di Mauro, A.;Di Nezza, P.;Di Ruzza, B.;Corchero, M. A. Diaz;Dietel, T.;Dillenseger, P.;Divia, R.;Djuvsland, O.;Dobrin, A.;Gimenez, D. Domenicis;Doenigus, B.;Dordic, O.;Drozhzhova, T.;Dubey, A. K.;Dubla, A.;Ducroux, L.;Dupieux, P.;Ehlers, R. J.;Elia, D.;Endress, E.;Engel, H.;Epple, E.;Erazmus, B.;Erdemir, I.;Erhardt, F.;Espagnon, B.;Estienne, M.;Esumi, S.;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.;Fernandez Tellez, 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.;Fleck, M. G.;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.;Girard, M. Fusco;Gaardhoje, 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.;Gargiulo, C.;Gasik, P.;Gauger, E. F.;Germain, M.;Gheata, M.;Ghosh, P.;Ghosh, S. K.;Gianotti, P.;Giubellino, P.;Giubilato, P.;Gladysz-Dziadus, E.;Glaessel, P.;Coral, D. M. Gomez;Ramirez, A. Gomez;Gonzalez, A. S.;Gonzalez, V.;Gonzalez-Zamora, P.;Gorbunov, S.;Gorlich, L.;Gotovac, S.;Grabski, V.;Grachov, O. A.;Graczykowski, L. K.;Graham, K. L.;Grelli, A.;Grigoras, A.;Grigoras, C.;Grigoriev, V.;Grigoryan, A.;Grigoryan, S.;Grinyov, B.;Grion, N.;Gronefeld, J. M.;Grosa, F.;Grosse-Oetringhaus, J. F.;Grosso, R.;Gruber, L.;Guber, F.;Guernane, R.;Guerzoni, B.;Gulbrandsen, K.;Gunji, T.;Gupta, A.;Gupta, R.;Haake, R.;Hadjidakis, C.;Haiduc, M.;Hamagaki, H.;Hamar, G.;Hamon, J. C.;Harris, J. W.;Harton, A.;Hatzifotiadou, D.;Hayashi, S.;Heckel, S. T.;Hellbaer, E.;Helstrup, H.;Herghelegiu, A.;Corral, G. Herrera;Hess, B. A.;Hetland, K. F.;Hillemanns, H.;Hippolyte, B.;Horak, D.;Hosokawa, R.;Hristov, P.;Hughes, C.;Humanic, T. J.;Hussain, N.;Hussain, T.;Hutter, D.;Hwang, D. S.;Ilkaev, R.;Inaba, M.;Incani, E.;Ippolitov, M.;Irfan, M.;Isakov, V.;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.;Bustamante, R. T. Jimenez;Jones, P. G.;Jusko, A.;Kalinak, P.;Kalweit, A.;Kang, J. H.;Kaplin, V.;Kar, S.;Uysal, A. Karasu;Karavichev, O.;Karavicheva, T.;Karayan, L.;Karpechev, E.;Kebschull, U.;Keidel, R.;Keijdener, D. L. D.;Keil, M.;Khan, M. Mohisin;Khan, P.;Khan, S. A.;Khanzadeev, A.;Kharlov, Y.;Khatun, A.;Kileng, B.;Kim, D. W.;Kim, D. J.;Kim, D.;Kim, H.;Kim, J. S.;Kim, J.;Kim, M.;Kim, S.;Kim, T.;Kirsch, S.;Kisel, I.;Kiselev, S.;Kisiel, A.;Kiss, G.;Klay, J. L.;Klein, C.;Klein, J.;Klein-Boesing, 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.;Meethaleveedu, G. Koyithatta;Kralik, I.;Kravcakova, A.;Krivda, M.;Krizek, F.;Kryshen, E.;Krzewicki, M.;Kubera, A. M.;Kucera, V.;Kuhn, C.;Kuijer, P. G.;Kumar, A.;Kumar, J.;Kumar, L.;Kumar, S.;Kurashvili, P.;Kurepin, A.;Kurepin, A. B.;Kuryakin, A.;Kweon, M. J.;Kwon, Y.;La Pointe, S. L.;La Rocca, P.;Ladron de Guevara, P.;Fernandes, C. Lagana;Lakomov, I.;Langoy, R.;Lapidus, K.;Lara, C.;Lardeux, A.;Lattuca, A.;Laudi, E.;Lea, R.;Leardini, L.;Lee, S.;Lehas, F.;Lehner, S.;Lemmon, R. C.;Lenti, V.;Leogrande, E.;Leon Monzon, I.;Leon Vargas, H.;Leoncino, M.;Levai, P.;Li, S.;Li, X.;Lien, J.;Lietava, R.;Lindal, S.;Lindenstruth, V.;Lippmann, C.;Lisa, M. A.;Ljunggren, H. M.;Lodato, D. F.;Loenne, P. I.;Loginov, V.;Loizides, C.;Lopez, X.;Lopez 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.;Mares, J.;Margagliotti, G. V.;Margotti, A.;Margutti, J.;Marin, A.;Markert, C.;Marquard, M.;Martin, N. A.;Martinengo, P.;Martinez, M. I.;Garcia, G. Martinez;Pedreira, M. Martinez;Mas, A.;Masciocchi, S.;Masera, M.;Masoni, A.;Mastroserio, A.;Matyja, A.;Mayer, C.;Mazer, J.;Mazzoni, M. A.;Mcdonald, D.;Meddi, F.;Melikyan, Y.;Menchaca-Rocha, A.;Meninno, E.;Perez, J. Mercado;Meres, M.;Mhlanga, S.;Miake, Y.;Mieskolainen, M. M.;Mikhaylov, K.;Milano, L.;Milosevic, J.;Mischke, A.;Mishra, A. N.;Miskowiec, D.;Mitra, J.;Mitu, C. M.;Mohammadi, N.;Mohanty, B.;Mohler, C.;Molnar, L.;Montano Zetina, L.;Montes, E.;De Godoy, D. A. Moreira;Moreno, L. A. P.;Moretto, S.;Morreale, A.;Morsch, A.;Muccifora, V.;Mudnic, E.;Muehlheim, D.;Muhuri, S.;Mukherjee, M.;Mulligan, J. D.;Munhoz, M. G.;Muenning, K.;Munzer, R. H.;Murakami, H.;Murray, S.;Musa, L.;Musinsky, J.;Naik, B.;Nair, R.;Nandi, B. K.;Nania, R.;Nappi, E.;Naru, M. U.;da Luz, H. Natal;Nattrass, C.;Navarro, S. R.;Nayak, K.;Nayak, R.;Nayak, T. K.;Nazarenko, S.;Nedosekin, A.;De Oliveira, R. A. Negrao;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.;Oh, S. K.;Ohlson, A.;Okatan, A.;Okubo, T.;Oleniacz, J.;Da Silva, A. C. Oliveira;Oliver, M. H.;Onderwaater, J.;Oppedisano, C.;Orava, R.;Oravec, M.;Ortiz Velasquez, A.;Oskarsson, A.;Otwinowski, J.;Oyama, K.;Ozdemir, M.;Pachmayer, Y.;Pagano, D.;Pagano, P.;Paic, G.;Pal, S. K.;Palni, P.;Pan, J.;Pandey, A. K.;Papikyan, V.;Pappalardo, G. S.;Pareek, P.;Park, W. J.;Parmar, S.;Passfeld, A.;Paticchio, V.;Patra, R. N.;Paul, B.;Pei, H.;Peitzmann, T.;Peng, X.;Da Costa, H. Pereira;Peresunko, D.;Lezama, E. Perez;Peskov, V.;Pestov, Y.;Petracek, 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.;Ploskon, 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.;Raniwala, R.;Raniwala, S.;Rasanen, S. S.;Rascanu, B. T.;Rathee, D.;Ravasenga, I.;Read, K. F.;Redlich, K.;Reed, R. J.;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.;Rodriguez Cahuantzi, M.;Manso, A. Rodriguez;Roed, K.;Rohr, D.;Rohrich, 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.;Safarik, K.;Sahlmuller, B.;Sahoo, P.;Sahoo, R.;Sahoo, S.;Sahu, P. K.;Saini, J.;Sakai, S.;Saleh, M. A.;Salzwedel, J.;Sambyal, S.;Samsonov, V.;Sandor, L.;Sandoval, A.;Sano, M.;Sarkar, D.;Sarkar, N.;Sarma, P.;Scapparone, E.;Scarlassara, F.;Schiaua, C.;Schicker, R.;Schmidt, C.;Schmidt, H. R.;Schmidt, M.;Schuchmann, S.;Schukraft, J.;Schutz, Y.;Schwarz, K.;Schweda, K.;Scioli, G.;Scomparin, E.;Scott, R.;Sefcik, M.;Seger, J. E.;Sekiguchi, Y.;Sekihata, D.;Selyuzhenkov, I.;Senosi, K.;Senyukov, S.;Serradilla, E.;Sevcenco, A.;Shabanov, A.;Shabetai, A.;Shadura, O.;Shahoyan, R.;Shangaraev, 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.;Spyropoulou-Stassinaki, M.;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.;Sumbera, M.;Sumowidagdo, 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 Munoz, G.;Telesca, A.;Terasaki, K.;Terrevoli, C.;Teyssier, B.;Thader, J.;Thakur, D.;Thomas, D.;Tieulent, R.;Tikhonov, A.;Timmins, A. R.;Toia, A.;Trogolo, S.;Trombetta, G.;Trubnikov, V.;Trzaska, W. H.;Tsuji, T.;Tumkin, A.;Turrisi, R.;Tveter, T. S.;Ullaland, K.;Uras, A.;Usai, G. L.;Utrobicic, A.;Vala, M.;Palomo, L. Valencia;Van der Maarel, J.;Van Hoorne, J. W.;van Leeuwen, M.;Vanat, T.;Vyvre, P. Vande;Varga, D.;Vargas, A.;Vargyas, M.;Varma, R.;Vasileiou, M.;Vasiliev, A.;Vauthier, A.;Doce, O. Vazquez;Vechernin, V.;Veen, A. M.;Velure, A.;Vercellin, E.;Vergara Limon, S.;Vernet, R.;Vickovic, L.;Viinikainen, J.;Vilakazi, Z.;Baillie, O. Villalobos;Villatoro Tello, A.;Vinogradov, A.;Vinogradov, L.;Virgili, T.;Vislavicius, V.;Viyogi, Y. P.;Vodopyanov, A.;Voelkl, M. A.;Voloshin, K.;Voloshin, S. A.;Volpe, G.;von Haller, B.;Vorobyev, I.;Vranic, D.;Vrlakova, J.;Vulpescu, B.;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.;Zaborowska, A.;Zaccolo, V.;Zaman, A.;Zampolli, C.;Zanoli, H. J. C.;Zaporozhets, S.;Zardoshti, N.;Zarochentsev, A.;Zavada, P.;Zaviyalov, N.;Zbroszczyk, H.;Zgura, I. S.;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.;Zyzak, M.
2016
Abstract
Background: In the context of the investigation of the quark gluon plasma produced in heavy-ion collisions, hadrons containing heavy (charm or beauty) quarks play a special role for the characterization of the hot and dense medium created in the interaction. The measurement of the production of charm and beauty hadrons in proton-proton collisions, besides providing the necessary reference for the studies in heavy-ion reactions, constitutes an important test of perturbative quantum chromodynamics (pQCD) calculations. Heavy-flavor production in proton-nucleus collisions is sensitive to the various effects related to the presence of nuclei in the colliding system, commonly denoted cold-nuclear-matter effects. Most of these effects are expected to modify open-charm production at low transverse momenta (p(T)) and, so far, no measurement of D-meson production down to zero transverse momentum was available at mid-rapidity at the energies attained at the CERN Large Hadron Collider (LHC). Purpose: The measurements of the production cross sections of promptly produced charmed mesons in p-Pb collisions at the LHC down to p(T) = 0 and the comparison to the results from pp interactions are aimed at the assessment of cold-nuclear-matter effects on open-charm production, which is crucial for the interpretation of the results from Pb-Pb collisions. The prompt charmed mesons D-0, D+, D*+, and D-s(+) were measured at mid-rapidity in p-Pb collisions at a center-of-mass energy per nucleon pair root S-NN = 5.02 TeV with the ALICE detector at the LHC. D mesons were reconstructed from their decays D-0 -> K- pi(+), D+ -> K- pi(+) pi(+), D*+ -> D-0 pi(+), D-S(+) -> phi pi(+) -> K- K+ pi(+), and their charge conjugates, using an analysis method based on the selection of decay topologies displaced from the interaction vertex. In addition, the prompt D 0 production cross section was measured in pp collisions at root S = 7 TeV and p-Pb collisions at root S-NN = 5.02 TeV down to p(T) = 0 using an analysis technique that is based on the estimation and subtraction of the combinatorial background, without reconstruction of the D-0 decay vertex. Results: The production cross section in pp collisions is described within uncertainties by different implementations of pQCD calculations down to p(T) = 0. This allowed also a determination of the total c (c) over bar production cross section in pp collisions, which is more precise than previous ALICE measurements because it is not affected by uncertainties owing to the extrapolation to pT = 0. The nuclear modification factor R-pPb( p(T)), defined as the ratio of the p(T)-differential D meson cross section in p-Pb collisions and that in pp collisions scaled by the mass number of the Pb nucleus, was calculated for the four D-meson species and found to be compatible with unity within uncertainties. The results are compared to theoretical calculations that include cold-nuclear-matter effects and to transport model calculations incorporating the interactions of charm quarks with an expanding deconfined medium. Conclusions: These measurements add experimental evidence that the modification of the D-meson transverse momentum distributions observed in Pb-Pb collisions with respect to pp interactions is due to strong final-state effects induced by the interactions of the charm quarks with the hot and dense partonic medium created in ultrarelativistic heavy-ion collisions. The current precision of the measurement does not allow us to draw conclusions on the role of the different cold-nuclear-matter effects and on the possible presence of additional hot-medium effects in p-Pb collisions. However, the analysis technique without decay-vertex reconstruction, applied on future larger data samples, should provide access to the physics-rich range down to p(T) = 0.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1077276
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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.
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