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Observation of the B_{c}^{+} Meson in Pb-Pb and pp Collisions at sqrt[s_{NN}]=5.02  TeV and Measurement of its Nuclear Modification Factor

Articolo
Data di Pubblicazione:
2022
Abstract:
The B-c(+) meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to study the production of the B-c(+) meson in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a center of-mass energy per nucleon pair of root s(NN) = 5.02 TeV, via the B-c(+) -> (J/psi -> mu(+)mu(-))mu(+)nu(mu) decay. The B-c(+) nuclear modification factor, derived from the Pb-Pb-to-pp ratio of production cross sections, is measured in two bins of the trimuon transverse momentum and of the Pb-Pb collision centrality. The B-c(+) meson is shown to be less suppressed than quarkonia and most of the open heavy-flavor mesons, suggesting that effects of the hot and dense nuclear matter created in heavy ion collisions contribute to its production. This measurement sets forth a promising new probe of the interplay of suppression and enhancement mechanisms in the production of heavy-flavor mesons in the quark-gluon plasma.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Tumasyan, A; Adam, W; Andrejkovic, J W; Bergauer, T; Chatterjee, S; Dragicevic, M; Del Valle, A Escalante; Frühwirth, R; Jeitler, M; Krammer, N; Lechner, L; Liko, D; Mikulec, I; Paulitsch, P; Pitters, F M; Schieck, J; Schöfbeck, R; Schwarz, D; Templ, S; Waltenberger, W; Wulz, C-E; Chekhovsky, V; Litomin, A; Makarenko, V; Darwish, M R; De Wolf, E A; Janssen, T; Kello, T; Lelek, A; Sfar, H Rejeb; Van Mechelen, P; Van Putte, S; Van Remortel, N; Blekman, F; Bols, E S; D'Hondt, J; Delcourt, M; Faham, H El; Lowette, S; Moortgat, S; Morton, A; Müller, D; Sahasransu, A R; Tavernier, S; Van Doninck, W; Van Mulders, P; Beghin, D; Bilin, B; Clerbaux, B; De Lentdecker, G; Favart, L; Grebenyuk, A; Kalsi, A K; Lee, K; Mahdavikhorrami, M; Makarenko, I; Moureaux, L; Pétré, L; Popov, A; Postiau, N; Starling, E; Thomas, L; Vanden Bemden, M; Vander Velde, C; Vanlaer, P; Wezenbeek, L; Cornelis, T; Dobur, D; Knolle, J; Lambrecht, L; Mestdach, G; Niedziela, M; Roskas, C; Samalan, A; Skovpen, K; Tytgat, M; Vermassen, B; Vit, M; Benecke, A; Bethani, A; Bruno, G; Bury, F; Caputo, C; David, P; Delaere, C; Donertas, I S; Giammanco, A; Jaffel, K; Jain, Sa; Lemaitre, V; Mondal, K; Prisciandaro, J; Taliercio, A; Teklishyn, M; Tran, T T; Vischia, P; Wertz, S; Alves, G A; Hensel, C; Moraes, A; Júnior, W L Aldá; Pereira, M Alves Gallo; Filho, M Barroso Ferreira; Malbouisson, H Brandao; Carvalho, W; Chinellato, J; Da Costa, E M; Da Silveira, G G; Damiao, D De Jesus; De Souza, S Fonseca; Figueiredo, D Matos; Herrera, C Mora; Amarilo, K Mota; Mundim, L; Nogima, H; Teles, P Rebello; Santoro, A; Amaral, S M Silva Do; Sznajder, A; Thiel, M; De Araujo, F Torres Da Silva; Pereira, A Vilela; Bernardes, C A; Calligaris, L; Tomei, T R Fernandez Perez; Gregores, E M; Lemos, D S; Mercadante, P G; Novaes, S F; Padula, Sandra S; Aleksandrov, A; Antchev, G; Hadjiiska, R; Iaydjiev, P; Misheva, M; Rodozov, M; Shopova, M; Sultanov, G; Dimitrov, A; Ivanov, T; Litov, L; Pavlov, B; Petkov, P; Petrov, A; Cheng, T; Javaid, T; Mittal, M; Yuan, L; Ahmad, M; Bauer, G; Dozen, C; Hu, Z; Martins, J; Wang, Y; Yi, K; Chapon, E; Chen, G M; Chen, H S; Chen, M; Iemmi, F; Kapoor, A; Leggat, D; Liao, H; Liu, Z-A; Milosevic, V; Monti, F; Sharma, R; Tao, J; Thomas-Wilsker, J; Wang, J; Zhang, H; Zhao, J; Agapitos, A; An, Y; Ban, Y; Chen, C; Levin, A; Li, Q; Lyu, X; Mao, Y; Qian, S J; Wang, D; Wang, Q; Xiao, J; Lu, M; You, Z; Gao, X; Okawa, H; Lin, Z; Xiao, M; Avila, C; Cabrera, A; Florez, C; Fraga, J; Guisao, J Mejia; Ramirez, F; Alvarez, J D Ruiz; González, C A Salazar; Giljanovic, D; Godinovic, N; Lelas, D; Puljak, I; Antunovic, Z; Kovac, M; Sculac, T; Brigljevic, V; Ferencek, D; Majumder, D; Roguljic, M; Starodumov, A; Susa, T; Attikis, A; Christoforou, K; Erodotou, E; Ioannou, A; Kole, G; Kolosova, M; Konstantinou, S; Mousa, J; Nicolaou, C; Ptochos, F; Razis, P A; Rykaczewski, H; Saka, H; Finger, M; Finger, M; Kveton, A; Ayala, E; Jarrin, E Carrera; Elgammal, S; Kamel, A Ellithi; Mahmoud, M A; Mohammed, Y; Bhowmik, S; Dewanjee, R K; Ehataht, K; Kadastik, M; Nandan, S; Nielsen, C; Pata, J; Raidal, M; Tani, L; Veelken, C; Eerola, P; Forthomme, L; Kirschenmann, H; Osterberg, K; Voutilainen, M; Bharthuar, S; Brücken, E; Garcia, F; Havukainen, J; Kim, M S; Kinnunen, R; Lampén, T; Lassila-Perini, K; Lehti, S; Lindén, T; Lotti, M; Martikainen, L; Myllymäki, M; Ott, J; Siikonen, H; Tuominen, E; Tuominiemi, J; Luukka, P; Petrow, H; Tuuva, T; Amendola, C; Besancon, M; Couderc, F; Dejardin, M; Denegri, D; Faure, J L; Ferri, F; Ganjour, S; Givernaud, A; Gras, P; de Monchenault, G Hamel; Jarry, P; Lenzi, B; Locci, E; Malcles, J; Rander, J; Rosowsky, A; Sahin, M Ö; Savoy-Navarro, A; Titov, M; Yu, G B; Ahuja, S; Arleo, F; Beaudette, F; Bonanomi, M; Perraguin, A Buchot; Busson, P; Cappati, A; Charlot, C; Davignon, O; Diab, B; Falmagne, G; Ghosh, S; de Cassagnac, R Granier; Hakimi, A; Kucher, I; Motta, J; Nguyen, M; Ochando, C; Paganini, P; Rembser, J; Salerno,
Autori di Ateneo:
AMAPANE Nicola Carlo
ARGIRO' Stefano
BELLAN Riccardo
BELLORA ANDREA
COSTA Marco
COVARELLI Roberto
MIGLIORE Ernesto
OBERTINO Maria Margherita
PACHER Luca
RUMERIO Paolo Giuseppe
SOLA Valentina
SOLANO Ada Maria
Link alla scheda completa:
https://iris.unito.it/handle/2318/1886494
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1886494/1073324/JHEP06(2022)156.pdf
Pubblicato in:
PHYSICAL REVIEW LETTERS
Journal
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