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Nuclear modification factor of D$^0$ mesons in PbPb collisions at $\sqrt{s_\mathrm{NN}} = 5.02$ TeV

2018-07-10Journal article Open access
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dc.contributor.authorCMS collaboration (2237 authors)
dc.contributor.authorNayak, Aruna
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão Da Cruz E Silva, Cristóvão
dc.contributor.authorDi Francesco, Agostino
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorGalinhas, Bruno
dc.contributor.authorGallinaro, Michele
dc.contributor.authorHollar, Jonathan
dc.contributor.authorLeonardo, Nuno
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorSeixas, Joao
dc.contributor.authorStrong, Giles
dc.contributor.authorToldaiev, Oleksii
dc.contributor.authorVadruccio, Daniele
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorSilva, Pedro
dc.contributor.authorMusella, Pasquale
dc.date.accessioned2019-02-04T13:47:38Z
dc.date.available2019-02-04T13:47:38Z
dc.date.issued2018-07-10
dc.date.updated2019-02-04T13:47:38Z
dc.description.abstractThe transverse momentum ( pT ) spectrum of prompt D0 mesons and their antiparticles has been measured via the hadronic decay channels D0→K−π+ and D‾0→K+π− in pp and PbPb collisions at a centre-of-mass energy of 5.02 TeV per nucleon pair with the CMS detector at the LHC. The measurement is performed in the D0 meson pT range of 2–100 GeV/c and in the rapidity range of |y|<1 . The pp (PbPb) dataset used for this analysis corresponds to an integrated luminosity of 27.4 pb −1 (530 μb −1 ). The measured D0 meson pT spectrum in pp collisions is well described by perturbative QCD calculations. The nuclear modification factor, comparing D0 meson yields in PbPb and pp collisions, was extracted for both minimum-bias and the 10% most central PbPb interactions. For central events, the D0 meson yield in the PbPb collisions is suppressed by a factor of 5–6 compared to the pp reference in the pT range of 6–10 GeV/c . For D0 mesons in the high- pT range of 60–100 GeV/c , a significantly smaller suppression is observed. The results are also compared to theoretical calculations.
dc.description.versionPeer Reviewed
dc.identifierPhys.Lett. B782 (2018) 474-496; DOI 10.1016/j.physletb.2018.05.074
dc.identifier.urihttp://dx.doi.org/10.1016/j.physletb.2018.05.074
dc.identifier.urihttp://hdl.handle.net/10400.26/27420
dc.language.isoeng
dc.relationAdvanced Multi-Variate Analysis for New Physics Searches at the LHC
dc.titleNuclear modification factor of D$^0$ mesons in PbPb collisions at $\sqrt{s_\mathrm{NN}} = 5.02$ TeV
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAdvanced Multi-Variate Analysis for New Physics Searches at the LHC
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/675440/EU
oaire.fundingStreamH2020
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt
rcaap.typearticle
relation.isProjectOfPublicationd1fe0247-7df8-4eac-ad17-2d56bfcafa24
relation.isProjectOfPublication.latestForDiscoveryd1fe0247-7df8-4eac-ad17-2d56bfcafa24

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