cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.101347.v1/t1
title: "Figure 1a" of "Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC"

description: Fig. 1. (Color online.) Top panel: Photon reconstruction efficiency $\left(\epsilon_{\gamma}\right)$ (solid symbols) and purity of photon sample $\left(f_{\mathrm{p}}\right)$ (open symbols) for PMD as a function of pseudorapidity $(\eta)$ for minimum bias $\mathrm{Au}+\mathrm{Au}$ and $\mathrm{Cu}+\mathrm{Cu}$ at $\sqrt{s_{\mathrm{NN}}}=$ $200 \mathrm{GeV}$. Bottom panel: Comparison between estimated $\epsilon_{\gamma}$ and $f_{\mathrm{p}}$ for PMD as a function of $\eta$ for minimum bias $\mathrm{Au}+\mathrm{Au}$ at $\sqrt{s_{\mathrm{NN}}}=62.4 \mathrm{GeV}$ using HIJING and AMPT models. The error bars on the AMPT data are statistical and those for HIJING are within the symbol size. NOTE: For points with invisible error bars, the point size was considered as an absolute upper limit for the uncertainty.
description: We present the multiplicity and pseudorapidity distributions of photons produced in $\mathrm{Au}+\mathrm{Au}$ and $\mathrm{Cu}+\mathrm{Cu}$ collisions at $\sqrt{s_{N N}}=62.4$ and 200 GeV. The photons are measured in the region $-3.7&lt;\eta&lt;-2.3$ using the photon multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent of the collision centrality. For collisions with similar average numbers of participating nucleons the photon multiplicities are observed to be similar for $\mathrm{Au}+\mathrm{Au}$ and $\mathrm{Cu}+$ Cu collisions at a given beam energy. The ratios of the number of charged particles to photons in the measured pseudorapidity range are found to be $1.4 \pm 0.1$ and $1.2 \pm 0.1$ for $\sqrt{s_{\mathrm{NN}}}=62.4$ and $200 \mathrm{GeV},$ respectively. The energy dependence of this ratio could reflect varying contributions from baryons to charged particles, while mesons are the dominant contributors to photon production in the given kinematic region. The photon pseudorapidity distributions normalized by average number of participating nucleon pairs, when plotted as a function of $\eta-y_{\text {beam }},$ are found to follow a longitudinal scaling independent of centrality and colliding ion species at both beam energies. (2009 Elsevier $B.V$. All rights reserved).
DOI: 10.17182/hepdata.101347.v1/t14
title: "Figure 5b" of "Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC"

description: Fig. 5. (Color online.) Photon pseudorapidity distributions normalized by the average number of participating nucleon pairs for different collision centralities are plotted as a function of pseudorapidity shifted by the beam rapidity (-5.36 for $200 \mathrm{GeV}$ and -4.19 for $62.4 \mathrm{GeV}$ ) for $\mathrm{Au}+\mathrm{Au}$ and $\mathrm{Cu}+\mathrm{Cu}$ collisions at $\sqrt{s_{\mathrm{NN}}}=62.4$ and $200 \mathrm{GeV}$. Errors are systematic only, statistical errors are negligible in comparison. For clarity of presentation, results for only four centralities are shown. The $\mathrm{Cu}+$ Cu data are shifted by 0.1 unit in $\eta-y_{\text {beam }} .$ The solid line is a second order polynomial fit to the data (see text for details).
description: We present the multiplicity and pseudorapidity distributions of photons produced in $\mathrm{Au}+\mathrm{Au}$ and $\mathrm{Cu}+\mathrm{Cu}$ collisions at $\sqrt{s_{N N}}=62.4$ and 200 GeV. The photons are measured in the region $-3.7&lt;\eta&lt;-2.3$ using the photon multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent of the collision centrality. For collisions with similar average numbers of participating nucleons the photon multiplicities are observed to be similar for $\mathrm{Au}+\mathrm{Au}$ and $\mathrm{Cu}+$ Cu collisions at a given beam energy. The ratios of the number of charged particles to photons in the measured pseudorapidity range are found to be $1.4 \pm 0.1$ and $1.2 \pm 0.1$ for $\sqrt{s_{\mathrm{NN}}}=62.4$ and $200 \mathrm{GeV},$ respectively. The energy dependence of this ratio could reflect varying contributions from baryons to charged particles, while mesons are the dominant contributors to photon production in the given kinematic region. The photon pseudorapidity distributions normalized by average number of participating nucleon pairs, when plotted as a function of $\eta-y_{\text {beam }},$ are found to follow a longitudinal scaling independent of centrality and colliding ion species at both beam energies. (2009 Elsevier $B.V$. All rights reserved).
DOI: 10.15468/dl.tg363e
title: Occurrence Download

description: A dataset containing 15849 species occurrences available in GBIF matching the query:
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 "Geometry POLYGON((-77.51284 43.10451,-77.51284 43.27137,-77.6922 43.27137,-77.6922 43.10451,-77.51284 43.10451))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Magnoliopsida"
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}

 The dataset includes 15849 records from 37 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015870-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17182/hepdata.101348.v1/t2
title: "Table 2" of "Cross sections and transverse single-spin asymmetries in forward neutral pion production from proton collisions at s**(1/2) = 200-GeV."

description: Analyzing powers versus Feynman $x$ ($x_{F}$). The average transverse momentum ($\langle p_{T}\rangle$) is correlated with $x_{F}$. The solid points are for identified $\pi^{0}$ mesons. The open points are for the total energy ($E_{\scriptsize{\mbox{tot}}}$), shifted by $x_{F}+0.01$. The inner error bars are statistical, and the outer combine these with the point-to-point systematic errors. The curves are from pQCD models evaluated at $p_{T}=1.5$ GeV/c [14-17]. The $A_{N}$ values are proportional to $A^{\scriptsize{\mbox{CNI}}}_{N}$, assumed to be 0.013 at 100 GeV.
description: Measurements of the production of forward high-energy $\pi^{0}$ mesons from transversely polarized proton collisions at $\sqrt{s}=200$ GeV are reported. The cross section is generally consistent with next-to-leading order perturbative QCD calculations. The analyzing power is small at $x_{F}$ below about 0.3, and becomes positive and large at higher $x_{F}$, similar to the trend in data at $\sqrt{s} \leq 20$ GeV. The analyzing power is in qualitative agreement with perturbative QCD model expectations. This is the first significant spin result seen for particles produced with $p_{T} &gt; 1$ GeV/c at a polarized proton collider.
DOI: 10.17182/hepdata.101346.v1/t20
title: "Figure 9d" of "Anomalous centrality evolution of two-particle angular correlations from Au-Au collisions at $\sqrt{s_{\rm NN}}$ = 62 and 200 GeV"

description: FIG. 9. (a) Amplitude of SS 2D peak (jet-correlated pairs per final-state hadron) for data (solid points), GLS extrapolation from $p$ - $p$ data (dashed curve) and from the HIJING Monte Carlo (open points, dotted curve). (b) Single-particle production extrapolated from $p-p$ data (dashed curve, GLS), and from more-central Au-Au data (solid line) and HIJING (dash-dotted line, open points). (c) Single-particle hard-component production per $N-N$ binary collision from $p-p$ data, from more-central Au-Au data and from HIJING (open points). (d) Jet-correlated pair production (SS 2D peak) per $N-N$ binary collision extrapolated from $p-p$ data (GLS), and from Au-Au data (solid points) and HIJING (open points).
description: We present two-dimensional (2D) two-particle angular correlations on relative pseudorapidity $\eta$ and azimuth $\phi$ for charged particles from Au-Au collisions at $\sqrt{s_{\mathrm{NN}}}=62$ and $200 \mathrm{GeV}$ with transverse momentum $p_{t} \geq 0.15 \mathrm{GeV} / c,|\eta| \leq 1$ and $2 \pi$ azimuth. Observed correlations include $\mathrm{a}$ $\{$ same-side $\}$ (relative azimuth $&lt;\pi / 2$ ) $2 \mathrm{D}$ peak, a closely-related away-side azimuth dipole, and an azimuth quadrupole conventionally associated with elliptic flow. The same-side 2 D peak and away-side dipole are explained by semihard parton scattering and fragmentation (minijets) in proton-proton and peripheral nucleus-nucleus collisions. Those structures follow N-N binary-collision scaling in Au-Au collisions until midcentrality where a transition to a qualitatively different centrality trend occurs within a small centrality interval. Above the transition point the number of same-side and away-side correlated pairs increases rapidly \{relative to $\}$ binary-collision scaling, the $\eta$ width of the same-side $2 \mathrm{D}$ peak also increases rapidly $(\eta$ elongation) and the $\phi$ width actually decreases significantly. Those centrality trends are more remarkable when contrasted with expectations of jet quenching in a dense medium. Observed centrality trends are compared to \{ Isc hijing\} predictions and to the expected trends for semihard parton scattering and fragmentation in a thermalized opaque medium. We are unable to reconcile a semihard parton scattering and fragmentation origin for the observed correlation structure and centrality trends with heavy ion collision scenarios which invoke rapid parton thermalization. On the other hand, if the collision system is effectively opaque to few-GeV partons the observations reported here would be inconsistent with a minijet picture.
DOI: 10.17182/hepdata.101346.v1/t18
title: "Figure 9b" of "Anomalous centrality evolution of two-particle angular correlations from Au-Au collisions at $\sqrt{s_{\rm NN}}$ = 62 and 200 GeV"

description: FIG. 9. (a) Amplitude of SS 2D peak (jet-correlated pairs per final-state hadron) for data (solid points), GLS extrapolation from $p$ - $p$ data (dashed curve) and from the HIJING Monte Carlo (open points, dotted curve). (b) Single-particle production extrapolated from $p-p$ data (dashed curve, GLS), and from more-central Au-Au data (solid line) and HIJING (dash-dotted line, open points). (c) Single-particle hard-component production per $N-N$ binary collision from $p-p$ data, from more-central Au-Au data and from HIJING (open points). (d) Jet-correlated pair production (SS 2D peak) per $N-N$ binary collision extrapolated from $p-p$ data (GLS), and from Au-Au data (solid points) and HIJING (open points).
description: We present two-dimensional (2D) two-particle angular correlations on relative pseudorapidity $\eta$ and azimuth $\phi$ for charged particles from Au-Au collisions at $\sqrt{s_{\mathrm{NN}}}=62$ and $200 \mathrm{GeV}$ with transverse momentum $p_{t} \geq 0.15 \mathrm{GeV} / c,|\eta| \leq 1$ and $2 \pi$ azimuth. Observed correlations include $\mathrm{a}$ $\{$ same-side $\}$ (relative azimuth $&lt;\pi / 2$ ) $2 \mathrm{D}$ peak, a closely-related away-side azimuth dipole, and an azimuth quadrupole conventionally associated with elliptic flow. The same-side 2 D peak and away-side dipole are explained by semihard parton scattering and fragmentation (minijets) in proton-proton and peripheral nucleus-nucleus collisions. Those structures follow N-N binary-collision scaling in Au-Au collisions until midcentrality where a transition to a qualitatively different centrality trend occurs within a small centrality interval. Above the transition point the number of same-side and away-side correlated pairs increases rapidly \{relative to $\}$ binary-collision scaling, the $\eta$ width of the same-side $2 \mathrm{D}$ peak also increases rapidly $(\eta$ elongation) and the $\phi$ width actually decreases significantly. Those centrality trends are more remarkable when contrasted with expectations of jet quenching in a dense medium. Observed centrality trends are compared to \{ Isc hijing\} predictions and to the expected trends for semihard parton scattering and fragmentation in a thermalized opaque medium. We are unable to reconcile a semihard parton scattering and fragmentation origin for the observed correlation structure and centrality trends with heavy ion collision scenarios which invoke rapid parton thermalization. On the other hand, if the collision system is effectively opaque to few-GeV partons the observations reported here would be inconsistent with a minijet picture.
DOI: 10.17182/hepdata.101349.v1/t3
title: "Table 1c" of "Rapidity and species dependence of particle production at large transverse momentum for d + Au collisions at s(NN)**(1/2) = 200-GeV."

description: High transverse-momentum spectra ($p_{T} &gt; 2.5$ GeV/c) of charged pions, protons, and antiprotons for the rapidity regions $|y| &lt; 0.5$ (solid symbols) and $0.5 &lt; |y| &lt; 1.0$ (open symbols) for $d+Au$ collisions and various event centrality classes at $\sqrt{s_{NN}}=200$ GeV.
description: We determine rapidity asymmetry in the production of charged pions, protons, and antiprotons for large transverse momentum ($p_{T}$) for $d+Au$ collisions at $\sqrt{s_{NN}}=200$ GeV. The rapidity asymmetry is defined as the ratio of particle yields at backward rapidity ($Au$ beam direction) to those at forward rapidity ($d$ beam direction). The identified hadrons are measured in the rapidity regions $|y| &lt; 0.5$ and $0.5 &lt; |y| &lt; 1.0$ for the $p_{T}$ range $2.5 &lt; p_{T} &lt; 10$ GeV/c. We observe significant rapidity asymmetry for charged pion and proton + antiproton production in both the rapidity regions. The asymmetry is larger for $0.5 &lt; |y| &lt; 1.0$ than for $|y| &lt; 0.5$ and is almost independent of particle type. The measurements are compared to various model predictions employing multiple scattering, energy loss, nuclear shadowing, saturation effects, and recombination and also to a phenomenological parton model. We find that asymmetries are sensitive to model parameters and show model preference. The rapidity dependence of $\pi^{-} / \pi^{+}$ and $\bar{p} / p$ ratios in peripheral $d+Au$ and forward neutron-tagged events are used to study the contributions of valence quarks and gluons to particle production at high $p_{T}$.
DOI: 10.17182/hepdata.101349.v1/t5
title: "Table 1e" of "Rapidity and species dependence of particle production at large transverse momentum for d + Au collisions at s(NN)**(1/2) = 200-GeV."

description: High transverse-momentum spectra ($p_{T} &gt; 2.5$ GeV/c) of charged pions, protons, and antiprotons for the rapidity regions $|y| &lt; 0.5$ (solid symbols) and $0.5 &lt; |y| &lt; 1.0$ (open symbols) for $d+Au$ collisions and various event centrality classes at $\sqrt{s_{NN}}=200$ GeV.
description: We determine rapidity asymmetry in the production of charged pions, protons, and antiprotons for large transverse momentum ($p_{T}$) for $d+Au$ collisions at $\sqrt{s_{NN}}=200$ GeV. The rapidity asymmetry is defined as the ratio of particle yields at backward rapidity ($Au$ beam direction) to those at forward rapidity ($d$ beam direction). The identified hadrons are measured in the rapidity regions $|y| &lt; 0.5$ and $0.5 &lt; |y| &lt; 1.0$ for the $p_{T}$ range $2.5 &lt; p_{T} &lt; 10$ GeV/c. We observe significant rapidity asymmetry for charged pion and proton + antiproton production in both the rapidity regions. The asymmetry is larger for $0.5 &lt; |y| &lt; 1.0$ than for $|y| &lt; 0.5$ and is almost independent of particle type. The measurements are compared to various model predictions employing multiple scattering, energy loss, nuclear shadowing, saturation effects, and recombination and also to a phenomenological parton model. We find that asymmetries are sensitive to model parameters and show model preference. The rapidity dependence of $\pi^{-} / \pi^{+}$ and $\bar{p} / p$ ratios in peripheral $d+Au$ and forward neutron-tagged events are used to study the contributions of valence quarks and gluons to particle production at high $p_{T}$.
DOI: 10.5281/zenodo.17526771
title: HOE Legacy 3 - KM1605 - LISST Optics

description: These Simons Collaboration on Ocean Processes and Ecology (SCOPE) data products were produced by the University of Hawaiʻi at Mānoa with support from the Simons Foundation. 

This dataset comes from sampling performed on the Hawaii Ocean Experiment - Legacy 3 cruise aboard the R/V Kilo Moana (cruise KM1605) in the north Pacific subtropical gyre. All LISST data are collected with a LISST-100X Type-B instrument operated in underway mode. The angular range (median of bin) of the LISST Type-B is 0.106-17.96 degrees, and the size classes sensed are 1.44 - 231 microns (median of each size bin) albeit only particles less than 100 µm are considered here (see dataset_references). HOE-Legacy underway particle size distributions were merged with the ship's position from UH Underway data files. All data have been corrected for background scattering of 0.2 micron filtered seawater sampled the first ten minutes of each hour. Data are presented as hourly means.  The volume concentration of particles (VD, in µL/L), the standard LISST output, is presented for 3 size ranges: 1.25-2 µm (VDsm), 2-20 µm (VDmed), and 20-100 µm (VDlg). Particle volume concentration is then converted to particle concentration by assuming spherical particles. The total particle concentration (nL, #/L) is calculated for particles with a diameter between 1.25 and 100 um. Larger size classes are excluded due to low detection limits.  The timestamp is in UTC.
DOI: 10.17182/hepdata.101349.v1/t6
title: "Table 1f" of "Rapidity and species dependence of particle production at large transverse momentum for d + Au collisions at s(NN)**(1/2) = 200-GeV."

description: High transverse-momentum spectra ($p_{T} &gt; 2.5$ GeV/c) of charged pions, protons, and antiprotons for the rapidity regions $|y| &lt; 0.5$ (solid symbols) and $0.5 &lt; |y| &lt; 1.0$ (open symbols) for $d+Au$ collisions and various event centrality classes at $\sqrt{s_{NN}}=200$ GeV.
description: We determine rapidity asymmetry in the production of charged pions, protons, and antiprotons for large transverse momentum ($p_{T}$) for $d+Au$ collisions at $\sqrt{s_{NN}}=200$ GeV. The rapidity asymmetry is defined as the ratio of particle yields at backward rapidity ($Au$ beam direction) to those at forward rapidity ($d$ beam direction). The identified hadrons are measured in the rapidity regions $|y| &lt; 0.5$ and $0.5 &lt; |y| &lt; 1.0$ for the $p_{T}$ range $2.5 &lt; p_{T} &lt; 10$ GeV/c. We observe significant rapidity asymmetry for charged pion and proton + antiproton production in both the rapidity regions. The asymmetry is larger for $0.5 &lt; |y| &lt; 1.0$ than for $|y| &lt; 0.5$ and is almost independent of particle type. The measurements are compared to various model predictions employing multiple scattering, energy loss, nuclear shadowing, saturation effects, and recombination and also to a phenomenological parton model. We find that asymmetries are sensitive to model parameters and show model preference. The rapidity dependence of $\pi^{-} / \pi^{+}$ and $\bar{p} / p$ ratios in peripheral $d+Au$ and forward neutron-tagged events are used to study the contributions of valence quarks and gluons to particle production at high $p_{T}$.
DOI: 10.5281/zenodo.17526770
title: HOE Legacy 3 - KM1605 - LISST Optics

description: These Simons Collaboration on Ocean Processes and Ecology (SCOPE) data products were produced by the University of Hawaiʻi at Mānoa with support from the Simons Foundation. 

This dataset comes from sampling performed on the Hawaii Ocean Experiment - Legacy 3 cruise aboard the R/V Kilo Moana (cruise KM1605) in the north Pacific subtropical gyre. All LISST data are collected with a LISST-100X Type-B instrument operated in underway mode. The angular range (median of bin) of the LISST Type-B is 0.106-17.96 degrees, and the size classes sensed are 1.44 - 231 microns (median of each size bin) albeit only particles less than 100 µm are considered here (see dataset_references). HOE-Legacy underway particle size distributions were merged with the ship's position from UH Underway data files. All data have been corrected for background scattering of 0.2 micron filtered seawater sampled the first ten minutes of each hour. Data are presented as hourly means.  The volume concentration of particles (VD, in µL/L), the standard LISST output, is presented for 3 size ranges: 1.25-2 µm (VDsm), 2-20 µm (VDmed), and 20-100 µm (VDlg). Particle volume concentration is then converted to particle concentration by assuming spherical particles. The total particle concentration (nL, #/L) is calculated for particles with a diameter between 1.25 and 100 um. Larger size classes are excluded due to low detection limits.  The timestamp is in UTC.
DOI: 10.17182/hepdata.101347.v1/t5
title: "Figure 2c" of "Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC"

description: Fig. 2. (Color online.) Event-by-event photon multiplicity distributions (solid circles) for $\mathrm{Au}+\mathrm{Au}$ and $\mathrm{Cu}+\mathrm{Cu}$ at $\sqrt{s_{\mathrm{NN}}}=62.4$ and $200 \mathrm{GeV} .$ The distributions for top $0-5 \%$ central $\mathrm{Au}+$ Au collisions and top $0-10 \%$ central $\mathrm{Cu}+\mathrm{Cu}$ collisions are also shown (open circles). The photon multiplicity distributions for central collisions are observed to be Gaussian (solid line). Only statistical errors are shown. NOTE: For points with invisible error bars, the point size was considered as an absolute upper limit for the uncertainty.
description: We present the multiplicity and pseudorapidity distributions of photons produced in $\mathrm{Au}+\mathrm{Au}$ and $\mathrm{Cu}+\mathrm{Cu}$ collisions at $\sqrt{s_{N N}}=62.4$ and 200 GeV. The photons are measured in the region $-3.7&lt;\eta&lt;-2.3$ using the photon multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent of the collision centrality. For collisions with similar average numbers of participating nucleons the photon multiplicities are observed to be similar for $\mathrm{Au}+\mathrm{Au}$ and $\mathrm{Cu}+$ Cu collisions at a given beam energy. The ratios of the number of charged particles to photons in the measured pseudorapidity range are found to be $1.4 \pm 0.1$ and $1.2 \pm 0.1$ for $\sqrt{s_{\mathrm{NN}}}=62.4$ and $200 \mathrm{GeV},$ respectively. The energy dependence of this ratio could reflect varying contributions from baryons to charged particles, while mesons are the dominant contributors to photon production in the given kinematic region. The photon pseudorapidity distributions normalized by average number of participating nucleon pairs, when plotted as a function of $\eta-y_{\text {beam }},$ are found to follow a longitudinal scaling independent of centrality and colliding ion species at both beam energies. (2009 Elsevier $B.V$. All rights reserved).