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

Abstract: 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

 Fuente: Phys. Rev. Lett. 123, 022001 (2019)

 Editorial: American Physical Society

 Fecha de publicación: 01/07/2019

 Nº de páginas: 18

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.123.022001

 ISSN: 0031-9007,1079-7114

 Url de la publicación: https://doi.org/10.1103/PhysRevLett.123.022001