cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.128718.v1/t12
title: "Table sup3a" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: Transverse-momentum spectra of $\mathrm{D^0}$ hadrons measured in pp collisions at $\sqrt{{s}} = 13$~TeV for different multiplicity classes selected with the $N_\mathrm{trkl}$ estimator at midrapidity.
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128718.v1/t13
title: "Table sup3b" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: Transverse-momentum spectra of $\mathrm{D_s^+}$ hadrons measured in pp collisions at $\sqrt{{s}} = 13$~TeV for different multiplicity classes selected with the $N_\mathrm{trkl}$ estimator at midrapidity.
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128718.v1/t14
title: "Table sup3c" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: Transverse-momentum spectra of $\mathrm{\Lambda_c^+}$ hadrons measured in pp collisions at $\sqrt{{s}} = 13$~TeV for different multiplicity classes selected with the $N_\mathrm{trkl}$ estimator at midrapidity.
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128718.v1/t15
title: "Table sup3aR" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: Transverse-momentum spectra ratios of $\mathrm{D^0}$ hadrons measured in pp collisions at $\sqrt{{s}} = 13$~TeV for different multiplicity classes selected with the $N_\mathrm{trkl}$ estimator at midrapidityto the INEL&gt;0 event class.
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128718.v1/t16
title: "Table sup3bR" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: Transverse-momentum spectra ratios of $\mathrm{D_s^+}$ hadrons measured in pp collisions at $\sqrt{{s}} = 13$~TeV for different multiplicity classes selected with the $N_\mathrm{trkl}$ estimator at midrapidityto the INEL&gt;0 event class.
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128718.v1/t17
title: "Table sup3cR" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: Transverse-momentum spectra ratios of $\mathrm{\Lambda_c^+}$ hadrons measured in pp collisions at $\sqrt{{s}} = 13$~TeV for different multiplicity classes selected with the $N_\mathrm{trkl}$ estimator at midrapidityto the INEL&gt;0 event class.
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128718.v1/t18
title: "Table sup6a" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: The visible $p_\mathrm{T}$-integrated $\mathrm{D_s^+ / D^0}$ ratio measured as a function of $\langle \mathrm{d}N_\mathrm{ch}/\mathrm{d}\eta \rangle$ in pp collisions at $\sqrt{{s}} = 13$~TeV
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128718.v1/t19
title: "Table sup6b" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: The visible $p_\mathrm{T}$-integrated $\mathrm{\Lambda_c^+ / D^0}$ ratio measured as a function of $\langle \mathrm{d}N_\mathrm{ch}/\mathrm{d}\eta \rangle$ in pp collisions at $\sqrt{{s}} = 13$~TeV
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128718.v1/t20
title: "Table sup7" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: The extrapolated $p_\mathrm{T}$-integrated $\mathrm{D_s^+ / D^0}$ ratio measured as a function of $\langle \mathrm{d}N_\mathrm{ch}/\mathrm{d}\eta \rangle$ in pp collisions at $\sqrt{{s}} = 13$~TeV
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128718.v1/t9
title: "Table 2c" of "Observation of a multiplicity dependence in the $p_{\rm T}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s} = 13$ TeV"

description: The $\mathrm{\Lambda_c^+ / D^0}$ ratio measured in pp collisions at $\sqrt{s} = 13$~TeV for different multiplicity classes selected with the V0M estimator at forward rapidity
description: The production of prompt $\rm D^{0}$, $\rm D^{+}_{s}$, and $\rm \Lambda_{c}^{+}$ hadrons, and their ratios, $\rm D^{+}_{s} / D^{0}$ and $\rm \Lambda_{c}^{+} / D^{0}$, are measured in proton--proton collisions at $\sqrt{s}=13$~TeV at midrapidity ($|y|&lt;0.5$) with the ALICE detector at the LHC. The measurements are performed as a function of the charm-hadron transverse momentum ($p_{\rm T}$) in intervals of charged-particle multiplicity, measured with two multiplicity estimators covering different pseudorapidity regions. While the strange to non-strange $\rm D^{+}_{s} / D^{0}$ ratio indicates no significant multiplicity dependence, the baryon-to-meson $p_{\rm T}$-differential $\rm \Lambda_{c}^{+} / D^{0}$ ratio shows a multiplicity-dependent enhancement, with a significance of 5.3$\sigma$ for $1 &lt; p_{\rm T} &lt; 12$~GeV/$c$, comparing the highest multiplicity interval with respect to the lowest one. The measurements are compared with a theoretical model that explains the multiplicity dependence by a canonical treatment of quantum charges in the statistical hadronisation approach, and with predictions from event generators that implement colour reconnection mechanisms beyond the leading colour approximation to model the hadronisation process. The $\rm \Lambda_{c}^{+} / D^{0}$ ratios as a function of $p_{\rm T}$ present a similar shape and magnitude as the $\rm \Lambda/K^{0}_{S}$ ratios in comparable multiplicity intervals, suggesting a potential common mechanism for light- and charm-hadron formation, with analogous multiplicity dependence. The $p_{\rm T}$-integrated ratios, extrapolated down to $p_{\rm T}=0$, do not show a significant dependence on multiplicity within the uncertainties.
DOI: 10.17182/hepdata.128775.v1/t1
title: "P_z_ANTI-LAMBDA vs. invariant mass (5.02TeV, 30-40%)" of "Polarization of $\Lambda$ and $\overline{\Lambda}$ hyperons along the beam direction in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV"

description: Invariant mass dependence of the $P_{z}$ for $\overline\Lambda$ in the 30-40% centrality class in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV.
description: The polarization of the $\Lambda$ and $\overline\Lambda$ hyperons along the beam ($z$) direction, $P_{\rm z}$, has been measured in Pb--Pb collisions at $\sqrt{s_{\rm NN}} =$ 5.02 TeV recorded with ALICE at the Large Hadron Collider (LHC). The largest contribution to $P_{\rm z}$ comes from elliptic flow induced vorticity and can be characterized by the second Fourier sine coefficient $P_{\rm z,\,{\rm s2}} = \langle{P_{\rm z}\sin(2\varphi - 2 \Psi_{\rm 2})}\rangle$, where $\varphi$ is the hyperon azimuthal emission angle, and $\Psi_{\rm 2}$ is the elliptic flow plane angle. We report the measurement of $P_{\rm z,\,{\rm s2}}$ for different collision centralities, and in the 30--50\% centrality interval as a function of the hyperon transverse momentum ($p_{\rm T}$) and rapidity ($y_{\rm H}$).
DOI: 10.17182/hepdata.128775.v1/t2
title: "P_z vs. centrality (5.02 TeV)" of "Polarization of $\Lambda$ and $\overline{\Lambda}$ hyperons along the beam direction in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV"

description: The average $(\Lambda + \overline\Lambda)$ polarization along beam direction as function of centrality in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV.
description: The polarization of the $\Lambda$ and $\overline\Lambda$ hyperons along the beam ($z$) direction, $P_{\rm z}$, has been measured in Pb--Pb collisions at $\sqrt{s_{\rm NN}} =$ 5.02 TeV recorded with ALICE at the Large Hadron Collider (LHC). The largest contribution to $P_{\rm z}$ comes from elliptic flow induced vorticity and can be characterized by the second Fourier sine coefficient $P_{\rm z,\,{\rm s2}} = \langle{P_{\rm z}\sin(2\varphi - 2 \Psi_{\rm 2})}\rangle$, where $\varphi$ is the hyperon azimuthal emission angle, and $\Psi_{\rm 2}$ is the elliptic flow plane angle. We report the measurement of $P_{\rm z,\,{\rm s2}}$ for different collision centralities, and in the 30--50\% centrality interval as a function of the hyperon transverse momentum ($p_{\rm T}$) and rapidity ($y_{\rm H}$).