cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.144510.v1/t3
title: "Figure 2b" of "Observation of direct-photon collective flow in sqrt(s_NN)=200 GeV Au+Au collisions"

description: Centrality dependence of $v_2$ (a, c, e) for (solid-black circles) $\pi^0$, (solid-red squares) inclusive photons, and (b, d, f) (solid-black circles) direct photons measured with the BBC detector for (a),(b) minimum-bias (c),(d) 0%-20% centrality, and (e),(f) 20%-40% centrality.
description: The second Fourier component $v_2$ of the azimuthal anisotropy with respect to the reaction plane was measured for direct photons at midrapidity and transverse momentum ($p_T$) of 1-13 GeV/$c$ in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. Previous measurements of this quantity for hadrons with $p_T$ &lt; 6 GeV/$c$ indicate that the medium behaves like a nearly perfect fluid, while for $p_T$ &gt; 6 GeV/$c$ a reduced anisotropy is interpreted in terms of a path-length dependence for parton energy loss. In this measurement with the PHENIX detector at the Relativistic Heavy Ion Collider we find that for $p_T$ &gt; 4 GeV/$c$ the anisotropy for direct photons is consistent with zero, as expected if the dominant source of direct photons is initial hard scattering. However, in the $p_T$ &lt; 4 GeV/$c$ region dominated by thermal photons, we find a substantial direct photon $v_2$ comparable to that of hadrons, whereas model calculations for thermal photons in this kinematic region significantly underpredict the observed $v_2$.
DOI: 10.17182/hepdata.144510.v1/t4
title: "Figure 3" of "Observation of direct-photon collective flow in sqrt(s_NN)=200 GeV Au+Au collisions"

description: High $p_T$ ($p_T$ &gt; 6 GeV/$c$) integrated $v_2$ vs $N_{part}$ for (a) $\pi^0$ (b) inclusive photon, and (c) direct photon. Results are shown with both reaction plane detectors$:$ (solid black circles) BBC and (solid red squares) RXN. Each point represents a 10% wide centrality bin from 60%-0%.
description: The second Fourier component $v_2$ of the azimuthal anisotropy with respect to the reaction plane was measured for direct photons at midrapidity and transverse momentum ($p_T$) of 1-13 GeV/$c$ in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. Previous measurements of this quantity for hadrons with $p_T$ &lt; 6 GeV/$c$ indicate that the medium behaves like a nearly perfect fluid, while for $p_T$ &gt; 6 GeV/$c$ a reduced anisotropy is interpreted in terms of a path-length dependence for parton energy loss. In this measurement with the PHENIX detector at the Relativistic Heavy Ion Collider we find that for $p_T$ &gt; 4 GeV/$c$ the anisotropy for direct photons is consistent with zero, as expected if the dominant source of direct photons is initial hard scattering. However, in the $p_T$ &lt; 4 GeV/$c$ region dominated by thermal photons, we find a substantial direct photon $v_2$ comparable to that of hadrons, whereas model calculations for thermal photons in this kinematic region significantly underpredict the observed $v_2$.
DOI: 10.17182/hepdata.144516.v1/t1
title: "Figure 13" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: Inclusive $\mu^+ \mu^-$ pair mass distributions from $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV over the mass range from 0 to 15 GeV/$c^2$. Results are shown separately for the south and north muon arms. The data are compared to the cocktail of expected sources.
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t2
title: "Figure 14" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: Inclusive like-sign $\mu \mu$ pair yield from $p$+$p$ collisions as a function of mass for the south and north muon arms and the ratio of data to expected sources.
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t3
title: "Figure 15a" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: Inclusive unlike-sign $\mu \mu$ pair yield from $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV as a function of mass in different $p_T$ slices for the south and north muon arms and the ratio of data to expected sources.
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t4
title: "Figure 15b" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: Inclusive unlike-sign $\mu \mu$ pair yield from $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV as a function of mass in different $p_T$ slices for the south and north muon arms and the ratio of data to expected sources.
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t5
title: "Figure 15c" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: Inclusive unlike-sign $\mu \mu$ pair yield from $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV as a function of mass in different $p_T$ slices for the south and north muon arms and the ratio of data to expected sources.
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t6
title: "Figure 16a" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: Inclusive like-sign $\mu \mu$ pair yield from $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV as a function of mass in different $p_T$ slices for the south and north muon arms and the ratio of data to expected sources.
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t7
title: "Figure 16b" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: Inclusive like-sign $\mu \mu$ pair yield from $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV as a function of mass in different $p_T$ slices for the south and north muon arms and the ratio of data to expected sources.
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t8
title: "Figure 16c" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: Inclusive like-sign $\mu \mu$ pair yield from $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV as a function of mass in different $p_T$ slices for the south and north muon arms and the ratio of data to expected sources.
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t10
title: "Figure 17b" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: The $\mu \mu$ pair data in the charm mass region as a function of $\Delta \phi.$
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t11
title: "Figure 17e" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: The $\mu \mu$ pair data in the charm mass region as a function of pair $p_T$.
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
DOI: 10.17182/hepdata.144516.v1/t12
title: "Figure 17f" of "Measurements of $\mu\mu$ pairs from open heavy flavor and Drell-Yan in $p+p$ collisions at $\sqrt{s}=200$ GeV"

description: The $\mu \mu$ pair data in the charm mass region as a function of pair $p_T$
description: PHENIX reports differential cross sections of $\mu\mu$ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in $p+p$ collisions at $\sqrt{s}$ = 200 GeV at forward and backward rapidity (1.2 &lt; |$\eta$| &lt; 2.2). The $\mu\mu$ pairs from $c\bar{c}$, $b\bar{b}$, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and $p_{T}$ . The azimuthal opening angle correlation between the muons from $c\bar{c}$ and $b\bar{b}$ decays and the pair-$p_{T}$ distributions are compared to distributions generated using pythia and powheg models, which both include next-to-leading order processes. The measured distributions for pairs from $c\bar{c}$ are consistent with pythia calculations. The $c\bar{c}$ data presents narrower azimuthal correlations and softer $p_{T}$ distributions compared to distributions generated from powheg. The $b\bar{b}$ data are well described by both models. The extrapolated total cross section for bottom production is 3.75$\pm$0.24(stat)$\pm$$^{0.35}_{0.50}$(syst)$\pm$0.45(global)[$\mu$b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy, and is approximately a factor of two higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.