Compact Muon Solenoid
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| CMS-PAS-HIN-19-007 | ||
| Fragmentation of jets containing a ${\mathrm{J}/\psi}$ meson in PbPb and pp collisions at 5 TeV | ||
| CMS Collaboration | ||
| June 2020 | ||
| Abstract: Jets containing a ${\mathrm{J}/\psi}$ meson are studied in PbPb collisions at a center of mass energy of ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 5.02 TeV, using the CMS detector at the LHC. Jets are selected to be in the transverse momentum range of 30 $ < {p_{\mathrm{T}}} < $ 40 GeV. The yield of ${\mathrm{J}/\psi}$ in these jets is evaluated as function of the jet fragmentation function variable $z$, the ratio of the ${\mathrm{J}/\psi}$ ${p_{\mathrm{T}}}$ to the jet ${p_{\mathrm{T}}}$. The nuclear modification factor is then derived by comparing the yield in PbPb to the corresponding expectation from pp data at the same collision energy. The suppression of the ${\mathrm{J}/\psi}$ yield shows a dependence on $z$, indicating that the interaction of the ${\mathrm{J}/\psi}$ with the quark-gluon plasma formed in heavy-ion collisions depends on the fragmentation pattern of the jet that gives rise to the ${\mathrm{J}/\psi}$ meson. | ||
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Links:
CDS record (PDF) ;
inSPIRE record ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to PLB. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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