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,
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