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Title

Studies of Beauty Suppression via Nonprompt D0 Mesons in Pb-Pb Collisions at sNN =5.02 TeV

AuthorsBrochero Cifuentes, J. A. CSIC ORCID; Cabrillo, I. J. CSIC ; Calderon, Alicia ; Chazin Quero, B. CSIC; Duarte Campderros, J. CSIC ORCID CVN ; Fernandez, M.; Fernández Manteca, P. J. CSIC ORCID; García Alonso, A.; García-Ferrero, J. ; Gómez, G. CSIC ORCID ; López Virto, A. CSIC ORCID ; Marco, Jesús CSIC ORCID ; Martínez-Rivero, Celso CSIC ORCID ; Martínez Ruiz del Arbol, P.; Matorras, Francisco CSIC ORCID ; Piedra, Jonatan CSIC ORCID ; Prieels, C.; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Trevisani, N. CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R.
Issue Date9-Jul-2019
PublisherAmerican Physical Society
CitationPhysical Review Letters 123(2): 022001 (2019)
AbstractThe 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.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.123.022001
URIhttp://hdl.handle.net/10261/213856
DOI10.1103/PhysRevLett.123.022001
Identifiersdoi: 10.1103/PhysRevLett.123.022001
e-issn: 1079-7114
issn: 0031-9007
Appears in Collections:(IFCA) Artículos




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