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Production of $\Lambda_\mathrm{c}^+$ baryons in proton-proton and lead-lead collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV
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abstract
The differential cross sections of $\Lambda_\mathrm{c}^+$ baryon production are measured via the exclusive decay channel $\Lambda_\mathrm{c}^+$ $\to$ pK$^-\pi^+$ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum ($p_\mathrm{T}$) in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the $\Lambda_\mathrm{c}^+$ rapidity interval $|y|$ $<$ 1.0 in the $p_\mathrm{T}$ range of 5-20 GeV/$c$ in pp and 10-20 GeV/$c$ in PbPb collisions. The observed yields of $\Lambda_\mathrm{c}^+$ for $p_\mathrm{T}$ of 10-20 GeV/$c$ suggest a possible suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The $\Lambda_\mathrm{c}^+/$D$^0$ production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common $p_\mathrm{T}$ range.
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Cited by 1 Pith paper
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Studying charm hadronisation into baryons with azimuthal correlations of $\Lambda_{\rm c}^{+}$ with charged particles in pp collisions at $\mathbf{\sqrt{\it s} = 13}$ TeV
First measurement of azimuthal correlations between prompt Lambda_c baryons and charged particles in pp collisions at 13 TeV shows a hint of larger low-pT associated yields than for D mesons.
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