Compact Muon Solenoid
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| CMS-PAS-HIN-18-007 | ||
| Measurement of the radial profile of $\mathrm{D^{0}}$ mesons in jets produced in pp and PbPb collisions at 5.02 TeV | ||
| CMS Collaboration | ||
| May 2018 | ||
| Abstract: The first measurement of the radial distributions of $\mathrm{D^{0}}$ mesons in jets in PbPb and pp collisions is presented. Data samples of PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}}= $ 5.02 TeV, corresponding to integrated luminosities of 404 $\mu$b$^{-1}$ and 27.4 pb$^{-1}$, respectively, are recorded by the CMS detector at the LHC. The jets are reconstructed with an anti-$k_{\mathrm{T}}$ algorithm with a distance parameter of 0.3. The radial distribution of $\mathrm{D^{0}}$ mesons with transverse momentum $p_{\mathrm{T}} > $ 4 GeV/$c$ are measured with respect to the jet axis. Modifications of $\mathrm{D^{0}}$ radial distribution in PbPb collisions are presented by comparing PbPb spectra to the pp reference data, indicating a redistribution of the $\mathrm{D^{0}}$ mesons close to the jet axis. This measurement provides new experimental constraints on the mechanisms of heavy-flavor production in proton-proton collisions as well as on the processes of parton energy loss and diffusion of heavy quarks inside the strongly interacting medium produced in heavy ion collisions. | ||
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Links:
CDS record (PDF) ;
inSPIRE record ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Phy. Rev. Lett. 125 (2020) 102001. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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