Measurement of the ${\Lambda }_c^{+}$ to $D^0$ production cross-section ratio in peripheral PbPb collisions

Abstract

We report on a measurement of the ${\Lambda }_c^{+}$ to $D^0$ production ratio in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}$= 5.02 TeV with the LHCb detector in the forward rapidity region $2<y<4.5$. The ${\Lambda }_c^{+}$ ($D^0$) hadrons are reconstructed via the decay channel ${\Lambda }_c^{+}\to p{K}^{+}{\pi }^{-}$ ($D^0\to K^{-}{\pi }^{+}$) for $2<p_{\mathrm{T}}<8$ GeV$/c$ and in the centrality range of about 65-90%. The results show no significant dependence on $p_T$, $y$ or the mean number of participating nucleons. They are also consistent with similar measurements obtained by the LHCb collaboration in pPb and Pbp collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV. The data agree well with predictions from PYTHIA in pp collisions at $\sqrt{s}$ = 5 TeV but are in tension with predictions of the Statistical Hadronization model.

arXiv commentAll figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-046.html (LHCb public pages)

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Cited by in corpus (2)

• Towards the understanding of heavy quarks hadronization: from leptonic to heavy-ion collisions
• Charm fragmentation fractions and $\mathrm{c}\overline{\mathrm{c}}$ cross section in p$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV