cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.168576.v1/t21
title: "Figure2: π⁺π⁻ (40-50%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for π⁺π⁻ in multiplicity class 40-50%, corresponding to panel -.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t22
title: "Figure2: π⁺π⁻ (50-60%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for π⁺π⁻ in multiplicity class 50-60%, corresponding to panel -.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t23
title: "Figure2: π⁺π⁻ (60-70%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for π⁺π⁻ in multiplicity class 60-70%, corresponding to panel -.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t24
title: "Figure2: π⁺π⁻ (70-80%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for π⁺π⁻ in multiplicity class 70-80%, corresponding to panel -.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t25
title: "Figure2: π⁺π⁻ (80-90%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for π⁺π⁻ in multiplicity class 80-90%, corresponding to panel -.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t26
title: "Figure2_c: π⁺π⁻ (90-100%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for π⁺π⁻ in multiplicity class 90-100%, corresponding to panel c.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t27
title: "Figure1_d: K⁺K⁺ + K⁻K⁻ (0-0.17%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for K⁺K⁺ + K⁻K⁻ in multiplicity class 0-0.17%, corresponding to panel d.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t28
title: "Figure1: K⁺K⁺ + K⁻K⁻ (0-1%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for K⁺K⁺ + K⁻K⁻ in multiplicity class 0-1%, corresponding to panel -.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t29
title: "Figure1: K⁺K⁺ + K⁻K⁻ (1-5%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for K⁺K⁺ + K⁻K⁻ in multiplicity class 1-5%, corresponding to panel -.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t30
title: "Figure1: K⁺K⁺ + K⁻K⁻ (5-10%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for K⁺K⁺ + K⁻K⁻ in multiplicity class 5-10%, corresponding to panel -.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.
DOI: 10.17182/hepdata.168576.v1/t31
title: "Figure1: K⁺K⁺ + K⁻K⁻ (10-20%)" of "Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\mathbf{\sqrt{s} = 13}$ TeV"

description: 2D (Δy,Δφ) rescaled two-particle correlation functions (C_R) for K⁺K⁺ + K⁻K⁻ in multiplicity class 10-20%, corresponding to panel -.
description: Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this work, correlations are examined as a function of rapidity and azimuthal-angle differences (Δy, Δφ) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at √s = 13 TeV, measured with the ALICE detector. The two-particle correlation functions are provided together with Δy and Δφ projections and compared to Monte Carlo (MC) model predictions. For the first time, the measurement is performed as a function of the event's charged-particle density. The shapes of the correlation functions are studied in detail for each particle pair, for both mesons and baryons. Previous ALICE studies at √s = 7 TeV revealed an anticorrelation at small relative angles for baryon–baryon and antibaryon–antibaryon pairs, whose origin remains an open question. In this work, an approach accounting for the inverse multiplicity scaling of the correlation function is introduced to study the multiplicity dependence of the correlation functions in more detail, highlighting differences in the underlying sources of correlations, such as quantum-statistics, final-state interactions, and resonance decays. The puzzling near-side anticorrelation in baryon–baryon measurements is observed across all multiplicity classes and remains a challenge for models of particle production in pp collisions. Furthermore, the multiplicity dependence of meson–meson correlations provides an independent means to explore the sensitivity of current MC models to soft-QCD effects and hadronization dynamics. The presented measurements enrich the experimental picture of two-particle correlations in pp collisions and serve as valuable input for ongoing theoretical developments.