cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.3535/r6h-8hx-01t
title: Crioceratites

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/jfq-k3z-h15
title: †Oosterella gaudryi (Nickles, 1892)

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/vh4-d3t-qgr
title: Mammalia Linnaeus, 1758

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/71w-fpm-bmx
title: Halorites

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/9m5-y6j-x41
title: Mammalia Linnaeus, 1758

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/pjq-lgc-wtc
title: Proboscidea Illiger, 1811

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/qj6-zqt-3c7
title: Animalia

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/8fy-66b-tb1
title: Crinoidea Miller, 1821

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/295-964-wzd
title: †Lunulites Lamarck, 1816

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/66l-qyn-d1r
title: Criosarasinella

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.15468/dl.7n3pcm
title: Occurrence Download

description: A dataset containing 304984 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "TaxonKey is Pyrola L."
 ]
}

 The dataset includes 304984 records from 1037 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0000622-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.j4d6t7
title: Occurrence Download

description: A dataset containing 9811 species occurrences available in GBIF matching the query:
{
 "and" : [
 "DatasetKey is Long-term tree inventory dataset from the permanent sampling plot in the broadleaved forest of European Russia",
 "EventId is 1988:09:01"
 ]
}

 The dataset includes 9811 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0000625-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.yqk7rk
title: Occurrence Download

description: A dataset containing 3365800 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Akainothrips galeus Crespi, Morris & Mound, 2004, Vicinothrips bullatus Mound & Morris, 2000, Dunatothrips aulidis Mound & Morris, 2001, Dunatothrips skene Mound & Morris, 2001, Lichanothrips calcis Crespi, Morris & Mound, 2004, Paracholeothrips calcicolae Crespi, Morris & Mound, 2004, Kladothrips morrisi Mound, Crespi & Kranz, 1996, Akainothrips calcica Crespi, Morris & Mound, 2004, Kladothrips xiphius Mound, Crespi & Kranz, 1996, Akainothrips carnei Crespi, Morris & Mound, 2004, Lichanothrips xouthus Crespi, Morris & Mound, 2004, Kladothrips maslini Mound, Crespi & Kranz, 1996, Akainothrips tessarus Crespi, Morris & Mound, 2004, Warithrips maelzeri Mound, 1971, Sartrithrips areius Crespi, Morris & Mound, 2004, Kladothrips torus (Mound, Crespi & Kranz, 1996), Kladothrips pilbara Mound, Crespi & Kranz, 1996, Akainothrips peronatus Crespi, Morris & Mound, 2004, Warithrips aridum Crespi, Morris & Mound, 2004, Xaniothrips rhodopus Mound & Morris, 1999, Sartrithrips mars Mound & Morris, 2001, Sartrithrips bapto Mound & Morris, 2001, Akainothrips notius Crespi, Morris & Mound, 2004, Entedonomphale quasimodo Triapitsyn, 2005, Ctenomys sociabilis Pearson & Christie, 1985, Ectemnorhinus similis C.O.Waterhouse, 1885, Eligmodontia morgani J.A.Allen, 1901, Maevia inclemens (Walckenaer, 1837), Hentzia palmarum (Hentz, 1832), Sceliphron destillatorium (Illiger, 1807), Emberiza schoeniclus (Linnaeus, 1758), Casinaria grandis Walley, 1947, Calliephialtes ferrugineus Cushman, 1940, Eyralpenus sublutea Bartel, 1903, Ugia amaponda Felder, 1874, Neptis laeta Overlaet, 1955, Neptis goochi Butler, 1879, Neptis frobenia Fabricius, 1798, Peucaea aestivalis (M.H.K.Lichtenstein, 1823), Baleja rufofasciata (Distant, 1879), Euplectrus lubomirmasneri Hansson, 2015, Dysgonia properans (Walker, 1858), Cryptothripa polyhymnia Hampson, 1902, Xerolycosa miniata (C.L.Koch, 1834), Alopecosa cuneata (Clerck, 1757), Lamyctes emarginatus Newport, 1844, Trochosa ruricola (De Geer, 1778), Trogulus closanicus Avram, 1971, Pardosa agrestis (Westring, 1861), Haplodrassus signifer (C.L.Koch, 1839))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 3365800 records from 2724 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0000624-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17182/hepdata.133168.v1/t1
title: "Table 1" of "First measurement of the $\Lambda$-$\Xi$ interaction in proton-proton collisions at the LHC"

description: The $\Lambda$--$\Xi^{-}$ $\oplus$ $\overline{\Lambda}$--$\overline{\Xi}^{+}$ correlation function and the $\lambda$ parameters with the parametrization of the background contribution $C_\mathrm{mis.}(k^*)$
description: The first experimental information on the strong interaction between $\Lambda$ and $\Xi^-$ strange baryons is presented in this Letter. The correlation function of $\Lambda$--$\Xi^-$ and $\overline{\Lambda}$--$\overline{\Xi}^{+}$ pairs produced in high-multiplicity proton--proton (pp) collisions at $\sqrt{s}=13$ TeV at the LHC is measured as a function of the relative momentum of the pair. The femtoscopy method is used to calculate the correlation function, which is then compared with theoretical expectations obtained using a meson exchange model, chiral effective field theory, and Lattice QCD calculations close to the physical point. Data support predictions of small scattering parameters while discarding versions with large ones, thus suggesting a weak $\Lambda$--$\Xi^{-}$ interaction. The limited statistical significance of the data does not yet allow one to constrain the effects of coupled channels like $\Sigma$--$\Xi$ and N--$\Omega$.
DOI: 10.25549/vercoutere-ouc110611593
title: 2 nude women and 1 military man

description: Partial view of one nude white female (?) depicted from shoulders to knees; torso is outlined in black; buttocks and partial leg are outlined in red; a round disk outlined in black bisected vertically hangs from her neck. A white koi kite outlined in tan with black highlights is in front of the female. One white nude female with one leg depicted from waist to toes is partially obscured by green netting. A male in a white military suit outlined in black with face outlined in red and black is depicted from the waist up. Only his right half is in view as he is against the right edge of the painting. The background includes brown, green and black. See description of 001 for OT notes.
DOI: 10.25549/vercoutere-ouc110611283
title: Woman playing a piano

description: Backview of one female with red hair with a white body outlined in red wearing high-heeled shoes is sitting at a piano; a black female wearing a blue dress with blue stockings, and brown shoes is standing on the left side (missing right arm), three upright structures with curved tops and bottoms are outlined in red and have black horizontal stripe; a fourth upright has no curved ends. Background include brown, green, white, and yellow. See description of 001 for OT notes.
DOI: 10.17182/hepdata.133218.v1/t1
title: "Figure8acd" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: $R_{\gamma}$ for minimum bias (0-86%) Au+Au collision at $\sqrt{s_{NN}} = 62.4$ GeV (a) and $39$ GeV (b). For $62.4$ GeV also centrality bins of 0-20% (c) and 20-40% (d) are shown. Data points are shown with statistical (bar) and systematic uncertainties (box)
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4
DOI: 10.17182/hepdata.133218.v1/t2
title: "Figure8b" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: $R_{\gamma}$ for minimum bias (0-86%) Au+Au collision at $\sqrt{s_{NN}} = 62.4$ GeV (a) and $39$ GeV (b). For $62.4$ GeV also centrality bins of 0-20% (c) and 20-40% (d) are shown. Data points are shown with statistical (bar) and systematic uncertainties (box)
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4
DOI: 10.17182/hepdata.133218.v1/t3
title: "Figure9acd" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: Direct photon spectra for minimum bias (0-86%) Au+Au collision at $\sqrt{s_{NN}} = 62.4$ GeV (a) and $39$ GeV (b). For $62.4$ GeV also centrality bins of 0-20% (c) and 20-40% (d) are shown. Data points are shown with statistical and systematic uncertainties, unless the central value is negative (arrows) or is consistent with zero within the statistical uncertainties (arrows with data point). In these cases upper limit with CL = 95$%$ are given.
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4
DOI: 10.17182/hepdata.133218.v1/t4
title: "Figure9b" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: Direct photon spectra for minimum bias (0-86%) Au+Au collision at $\sqrt{s_{NN}} = 62.4$ GeV (a) and $39$ GeV (b). For $62.4$ GeV also centrality bins of 0-20% (c) and 20-40% (d) are shown. Data points are shown with statistical and systematic uncertainties, unless the central value is negative (arrows) or is consistent with zero within the statistical uncertainties (arrows with data point). In these cases upper limit with CL = 95$%$ are given.
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4
DOI: 10.17182/hepdata.133218.v1/t5
title: "Figure12" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: Inverse slopes, $T_{eff}$ , obtained from fitting the combined data from central collisions shown in Fig. 11 is compared to the fit results of the individual data sets at $\sqrt{s_{NN}} = 62.4$ GeV, $200$ GeV, and $2760$ GeV. Also included is the value for $\sqrt{s_{NN}} = 39$ GeV obtained from fitting the min. bias data set in the lower $p_T$ range.
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4
DOI: 10.17182/hepdata.133218.v1/t6
title: "Figure13a" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: Integrated invariant direct-photon yields vs. charged particle multiplicity for $p_{T}$ integrated from (a) 0.4 GeV/c, (b) 1.0 GeV/c, (c) 1.5 GeV/c, and (d) 2.0 to 5.0 GeV/c for all available A+A datasets.
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4
DOI: 10.25549/vercoutere-ouc110611268
title: Nude woman lying on her back with knees bent

description: One nude female depicted from forehead to feet outlined in red with brown highlights on body is lying on her back with knees bent on a tan floor with green stripes and a blue rug (?) under her body, brown and blue walls with a window on far wall. See description of 001 for OT notes.
DOI: 10.17182/hepdata.133218.v1/t10
title: "Figure15a" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: Integrated direct-photon yields from A+A collisions for $p_{T,min}$ of $5$ GeV/c (a) and $8$ GeV/c. The representation is the same as in Fig. 13. Also shown are the results from pQCD calculations scaled by $N_{coll}$
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4
DOI: 10.17182/hepdata.133218.v1/t11
title: "Figure15b" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: Integrated direct-photon yields from A+A collisions for $p_{T,min}$ of $5$ GeV/c (a) and $8$ GeV/c. The representation is the same as in Fig. 13. Also shown are the results from pQCD calculations scaled by $N_{coll}$
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4
DOI: 10.17182/hepdata.133218.v1/t12
title: "Figure16" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: The $\alpha$ values extracted using fits to integrated direct photon yields. The dashed line gives the average $\alpha$ value for the 4 lower $p_{T,min}$ points. Also shown is a model calculation for $\alpha$ discussed in the text.
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4
DOI: 10.17182/hepdata.133218.v1/t7
title: "Figure13b" of "Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV"

description: Integrated invariant direct-photon yields vs. charged particle multiplicity for $p_{T}$ integrated from (a) 0.4 GeV/c, (b) 1.0 GeV/c, (c) 1.5 GeV/c, and (d) 2.0 to 5.0 GeV/c for all available A+A datasets.
description: The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{NN}} = 39$ and $62.4$ GeV in the transverse momentum range $0.4 &lt; p_T &lt; 3$ GeV/$c$ is presented by the PHENIX collaboration. A significant direct photon yield is observed in both the systems. A universal scaling is observed when the direct photon $p_T$ spectra for the different center of mass energies and for different centrality selection at $\sqrt{s_{NN}} = 62.4$ GeV is scaled with $(dN_{ch}/d\eta)^{\alpha}$ with $\alpha=1.21 \pm 0.04$. This scaling also holds true for direct photon spectra from Au$+$Au collisions at $\sqrt{s_{NN}} = 200$ GeV measured by PHENIX, as well as the spectra from Pb$+$Pb at $\sqrt{s_{NN}} = 2760$ GeV published by ALICE. It is also demonstrated that the scaling power $\alpha$ seem to be independent of $p_T$, center of mass energy, and collision centrality. The spectra from different collision energies, have a similar shape up to $p_T$ of $2$ GeV/$c$. They are concave with an increasing local inverse slope $T_{eff}$ that is $0.174\pm0.018$ GeV/$c$ in the range $0.4