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Título: | Studies of Beauty Suppression via Nonprompt D0 Mesons in Pb-Pb Collisions at sNN =5.02 TeV |
Autor: | Brochero Cifuentes, J. A. CSIC ORCID; Cabrillo, I. J. CSIC ORCID ; Calderon, Alicia ; Chazin Quero, B. CSIC; Duarte Campderros, J. CSIC ORCID ; Fernández-García, Marcos CSIC ORCID ; Fernández Manteca, P. J. CSIC ORCID; García Alonso, A. CSIC ORCID; García-Ferrero, J. CSIC ; Gómez, Gervasio CSIC ORCID ; López Virto, A. CSIC ORCID ; Marco, Jesús CSIC ORCID ; Martínez-Rivero, Celso CSIC ORCID ; Martínez Ruiz del Arbol, P. CSIC ORCID; Matorras, Francisco CSIC ORCID ; Piedra, Jonatan CSIC ORCID ; Prieels, C. CSIC; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Trevisani, N. CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID | Fecha de publicación: | 9-jul-2019 | Editor: | American Physical Society | Citación: | Physical Review Letters 123(2): 022001 (2019) | Resumen: | The transverse momentum spectra of D0 mesons from b hadron decays are measured at midrapidity (|y|<1) in pp and Pb-Pb collisions at a nucleon-nucleon center of mass energy of 5.02 TeV with the CMS detector at the LHC. The D0 mesons from b hadron decays are distinguished from prompt D0 mesons by their decay topologies. In Pb-Pb collisions, the B?D0 yield is found to be suppressed in the measured pT range from 2 to 100 GeV/c as compared to pp collisions. The suppression is weaker than that of prompt D0 mesons and charged hadrons for pT around 10 GeV/c. While theoretical calculations incorporating partonic energy loss in the quark-gluon plasma can successfully describe the measured B?D0 suppression at higher pT, the data show an indication of larger suppression than the model predictions in the range of 2<pT<5 GeV/c. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevLett.123.022001 | URI: | http://hdl.handle.net/10261/213856 | DOI: | 10.1103/PhysRevLett.123.022001 | Identificadores: | doi: 10.1103/PhysRevLett.123.022001 e-issn: 1079-7114 issn: 0031-9007 |
Aparece en las colecciones: | (IFCA) Artículos |
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