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Studies of beauty suppression via nonprompt D0 mesons in Pb-Pb collisions at √sNN=5.02  TeV

dc.contributor.authorSirunyan, A. M.pt_BR
dc.contributor.authorSilveira, Gustavo Gil dapt_BR
dc.contributor.authorCMS Collaborationpt_BR
dc.date.accessioned2019-09-04T02:35:20Zpt_BR
dc.date.issued2019pt_BR
dc.identifier.issn0031-9007pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/198767pt_BR
dc.description.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/cen
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review letters. Melville. Vol. 123, no. 2 (July 2019), 022001, 18 p.pt_BR
dc.rightsOpen Accessen
dc.subjectAceleradores de partículaspt_BR
dc.subjectColisões proton-protonpt_BR
dc.subjectColisao de nucleon-nucleopt_BR
dc.subjectMesonspt_BR
dc.titleStudies of beauty suppression via nonprompt D0 mesons in Pb-Pb collisions at √sNN=5.02  TeVpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001099006pt_BR
dc.type.originEstrangeiropt_BR


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