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Study of flavor dependence of the baryon-to-meson ratio in proton-proton collisions at $\sqrt{s} = 13$ TeV

The ALICE collaboration
Acharya, Shreyasi , Adamova, Dagmar , Aglieri Rinella, Gianluca , Agnello, Michelangelo , Agrawal, Neelima , Ahammed, Zubayer , Ahmad, Shakeel , Ahn, Sang Un , Ahuja, Ishaan , Akindinov, Alexander
Phys.Rev.D 108 (2023) 112003, 2023.
https://doi.org/10.17182/hepdata.145640

Abstract
The production cross sections of ${\rm D^0}$ and $\Lambda^+_{\rm c}$ hadrons originating from beauty-hadron decays (i.e. non-prompt) were measured for the first time at midrapidity ($|y|<0.5$) by the ALICE Collaboration in proton-proton collisions at a center-of-mass energy $\sqrt{s}=13$ TeV. They are described within uncertainties by perturbative QCD calculations employing the fragmentation fractions of beauty quarks to baryons measured at forward rapidity by the LHCb Collaboration. The ${\rm b\overline{b}}$ production cross section per unit of rapidity at midrapidity, estimated from these measurements, is ${\rm d}\sigma_{\rm b\overline{b}}/{\rm d}y|_{|y|<0.5} = 83.1 \pm 3.5 (\mathrm{stat.}) \pm 5.4(\mathrm{syst.}) ^{+12.3}_{-3.2} (\mathrm{extrap.})\,\mu$b. The baryon-to-meson ratios are computed to investigate the hadronization mechanism of beauty quarks. The non-prompt $\Lambda^+_{\rm c}/{\rm D^0}$ production ratio has a similar trend to the one measured for the promptly produced charmed particles and to the p$/\pi^+$ and $\Lambda/{\rm K^0_S}$ ratios, suggesting a similar baryon-formation mechanism among light, strange, charm, and beauty hadrons. The $p_{\rm T}$-integrated non-prompt $\Lambda_{\rm c}/{\rm D^0}$ ratio is found to be significantly higher than the one measured in e$^+$e$^-$ collisions.

  • Figure 3 non-prompt D0 pp 13 TeV

    Data from Figure 3 D$^{0}$, pp collisions at $\sqrt{s}$ = 13 TeV

    10.17182/hepdata.145640.v1/t1

    $p_{\mathrm{T}}$-differential D$^{0}$ production cross section in pp collisions at $\sqrt{s}$ = 13 TeV

  • Figure 3 non-prompt Lc pp 13 TeV

    Data from Figure 3 $\Lambda_\mathrm{c}^{+}$, pp collisions at $\sqrt{s}$ = 13 TeV

    10.17182/hepdata.145640.v1/t2

    $p_{\mathrm{T}}$-differential $\Lambda_\mathrm{c}^{+}$ production cross section in pp collisions at $\sqrt{s}$ = 13 TeV

  • Figure 5 non-prompt Lc over non-prompt D0 pp 13 TeV

    Data from Figure 3 non-prompt $\Lambda_\mathrm{c}^{+}$/non-prompt D$^{0}$ ratio, pp collisions at $\sqrt{s}$ = 13 TeV

    10.17182/hepdata.145640.v1/t3

    $p_{\mathrm{T}}$-differential non-prompt $\Lambda_\mathrm{c}^{+}$/non-prompt D$^{0}$ ratio in pp collisions at $\sqrt{s}$ = 13 TeV

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