cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.145190.v1/t67
title: "Figure 37b pt.2" of "Detailed measurement of the $e^+ e^-$ pair continuum in $p+p$ and Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV and implications for direct photon production"

description: (Color online) $p_T$ spectra of $e^+e^-$ pairs in $p$+$p$ (left) and Au+Au (right) collisions for different mass bins, which are fully acceptance corrected. Au+Au spectra are divided by $N_{part}/2$. The solid curves show the expectations from the sum of the hadronic decay cocktail and the contribution from charmed mesons. The dashed curves show the sum of the cocktail and charmed meson contributions plus the contribution from direct photons calculated by converting the photon yield from Fig. 34 to the $e^+e^-$ pair yield using Eqs. (31) and (B14). Au$+$Au collision data shown.
description: PHENIX has measured the $e^{+}e^{-}$ pair continuum in $\sqrt{s_{NN}}$=200 GeV Au+Au and $p+p$ collisions over a wide range of mass and transverse momenta. The $e^{+}e^{-}$ yield is compared to the expectations from hadronic sources, based on PHENIX measurements. In the intermediate mass region, between the masses of the $\phi$ and the $J/\psi$ meson, the yield is consistent with expectations from correlated $c\bar c$ production, though other mechanisms are not ruled out. In the low mass region (below the $\phi$) the $p+p$ inclusive mass spectrum is well described by known contributions from light meson decays. In contrast, the Au+Au minimum bias inclusive mass spectrum in this region shows an enhancement by a factor of $4.7\pm 0.4^{stat}\pm 1.5^{syst}\pm 0.9^{model}$ At low mass ($m_{ee}$&lt;0.3 GeV/$c^{2}$) and high $p_{T}$ (1&lt;$p_{T}$&lt;5 GeV/$c$) an enhanced $e^{+}e^{-}$ pair yield is observed that is consistent with production of virtual direct photons. This excess is used to infer the yield of real direct photons. In central Au+Au collisions, the excess of the direct photon yield over the $p+p$ is exponential in $p_{T}$, with inverse slope $T = 221\pm 19^{stat}\pm 19^{syst}$ MeV. Hydrodynamical models with initial temperatures ranging from $T_{init} \cong$300--600 MeV at times of 0.6--0.15 fm/$c$ after the collision are in qualitative agreement with the direct photon data in Au+Au. For low $p_{T}$&lt;1 GeV/$c$ the low mass region shows a further significant enhancement that increases with centrality and has an inverse slope of $T\cong$100 MeV. Theoretical models under predict the low mass, low $p_{T}$ enhancement. Error values of 9.99E+9 represent upper limit errors.
DOI: 10.17182/hepdata.145190.v1/t68
title: "Figure 37b pt.3" of "Detailed measurement of the $e^+ e^-$ pair continuum in $p+p$ and Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV and implications for direct photon production"

description: (Color online) $p_T$ spectra of $e^+e^-$ pairs in $p$+$p$ (left) and Au+Au (right) collisions for different mass bins, which are fully acceptance corrected. Au+Au spectra are divided by $N_{part}/2$. The solid curves show the expectations from the sum of the hadronic decay cocktail and the contribution from charmed mesons. The dashed curves show the sum of the cocktail and charmed meson contributions plus the contribution from direct photons calculated by converting the photon yield from Fig. 34 to the $e^+e^-$ pair yield using Eqs. (31) and (B14). Au$+$Au collision data shown.
description: PHENIX has measured the $e^{+}e^{-}$ pair continuum in $\sqrt{s_{NN}}$=200 GeV Au+Au and $p+p$ collisions over a wide range of mass and transverse momenta. The $e^{+}e^{-}$ yield is compared to the expectations from hadronic sources, based on PHENIX measurements. In the intermediate mass region, between the masses of the $\phi$ and the $J/\psi$ meson, the yield is consistent with expectations from correlated $c\bar c$ production, though other mechanisms are not ruled out. In the low mass region (below the $\phi$) the $p+p$ inclusive mass spectrum is well described by known contributions from light meson decays. In contrast, the Au+Au minimum bias inclusive mass spectrum in this region shows an enhancement by a factor of $4.7\pm 0.4^{stat}\pm 1.5^{syst}\pm 0.9^{model}$ At low mass ($m_{ee}$&lt;0.3 GeV/$c^{2}$) and high $p_{T}$ (1&lt;$p_{T}$&lt;5 GeV/$c$) an enhanced $e^{+}e^{-}$ pair yield is observed that is consistent with production of virtual direct photons. This excess is used to infer the yield of real direct photons. In central Au+Au collisions, the excess of the direct photon yield over the $p+p$ is exponential in $p_{T}$, with inverse slope $T = 221\pm 19^{stat}\pm 19^{syst}$ MeV. Hydrodynamical models with initial temperatures ranging from $T_{init} \cong$300--600 MeV at times of 0.6--0.15 fm/$c$ after the collision are in qualitative agreement with the direct photon data in Au+Au. For low $p_{T}$&lt;1 GeV/$c$ the low mass region shows a further significant enhancement that increases with centrality and has an inverse slope of $T\cong$100 MeV. Theoretical models under predict the low mass, low $p_{T}$ enhancement. Error values of 9.99E+9 represent upper limit errors.
DOI: 10.5281/zenodo.17527249
title: TABLE 1 in Discovery of two crania of Equus (Sussemionus) ovodovi Eisenmann & Vasiliev, 2011 (Mammalia, Perissodactyla) from the Late Pleistocene of Khakassia, Russia

description: TABLE 1. — Measurements (in mm) of Equus (Sussemionus) ovodovi Eisenmann & Vasiliev, 2011 crania (Table) and Simpson’s ratio diagrams (Figure). Measures: 2-5, palatal length sensu stricto; 3, vomerine length; 4, postvomerine length; 5, muzzle length; 9, length of choanae; 10, greatest choanal breadth; 13, frontal breadth; 16, breadth of the supra-occipital (lambdoidal) crest; 17, muzzle breadth at the posterior borders of I3; 17bis, least muzzle breadth between the crests; 20, height of the external auditive meatus; 23, anterior ocular line; 25, facial height in front of P2; 28, cranial height; 31, length of the naso-incisival notch; 32, cheek length.
MeasurementsMeasure numberDm53/59.B1gl192EBK Ba2 C1(B) 384Dmanisi E. vekuaeFanatics E. ovodovi 1Fanatics E. ovodovi 2Emine Bair Khosar E. hydruntinus57.21647.446–52.9345.123371330–320118.73107.6118118101.5101.84108107.2101.2106.8113.62-5125119.6108119.3103.85121.6118.7–8855.3176263.8–57.441.517bis42.542.2–40.3195.913198.419719218447.6104443.445.249.5101.525–85.3–88.889.52882.891.6–9062.5956.8–––14.42012.2–13.5–143.031160141.5–132.1162.332154173–170433.41–459–409Log10 E.h.o.1.75716–0.082–0.095––0.0342.538230.031–0.019––0.0332.0743–0.043–0.003–0.003–0.0682.00840.0260.022–0.0030.0212.0552-50.0420.022–0.0220.0212.01650.0690.058––0.0721.743170.0500.062–0.0161.61817bis0.0100.007––0.0132.292130.0060.002–0.009–0.0271.67810–0.034–0.040–0.0220.0172.00625––0.076––0.0581.95228–0.0340.010–0.0021.7969–0.042–––1.15820–0.072––0.028–2.155310.049–0.005––0.0342.21032–0.0230.028–0.020
description: Published as part of Eisenmann, Véra & Vasiliev, Sergei K., 2025, Discovery of two crania of Equus (Sussemionus) ovodovi Eisenmann & Vasiliev, 2011 (Mammalia, Perissodactyla) from the Late Pleistocene of Khakassia, Russia, pp. 716 in Geodiversitas 47 (19) on page 716, DOI: 10.5252/geodiversitas2025v47a19, http://zenodo.org/record/17520509
DOI: 10.17182/hepdata.145190.v1/t69
title: "Figure 37b pt.4" of "Detailed measurement of the $e^+ e^-$ pair continuum in $p+p$ and Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV and implications for direct photon production"

description: (Color online) $p_T$ spectra of $e^+e^-$ pairs in $p$+$p$ (left) and Au+Au (right) collisions for different mass bins, which are fully acceptance corrected. Au+Au spectra are divided by $N_{part}/2$. The solid curves show the expectations from the sum of the hadronic decay cocktail and the contribution from charmed mesons. The dashed curves show the sum of the cocktail and charmed meson contributions plus the contribution from direct photons calculated by converting the photon yield from Fig. 34 to the $e^+e^-$ pair yield using Eqs. (31) and (B14). Au$+$Au collision data shown.
description: PHENIX has measured the $e^{+}e^{-}$ pair continuum in $\sqrt{s_{NN}}$=200 GeV Au+Au and $p+p$ collisions over a wide range of mass and transverse momenta. The $e^{+}e^{-}$ yield is compared to the expectations from hadronic sources, based on PHENIX measurements. In the intermediate mass region, between the masses of the $\phi$ and the $J/\psi$ meson, the yield is consistent with expectations from correlated $c\bar c$ production, though other mechanisms are not ruled out. In the low mass region (below the $\phi$) the $p+p$ inclusive mass spectrum is well described by known contributions from light meson decays. In contrast, the Au+Au minimum bias inclusive mass spectrum in this region shows an enhancement by a factor of $4.7\pm 0.4^{stat}\pm 1.5^{syst}\pm 0.9^{model}$ At low mass ($m_{ee}$&lt;0.3 GeV/$c^{2}$) and high $p_{T}$ (1&lt;$p_{T}$&lt;5 GeV/$c$) an enhanced $e^{+}e^{-}$ pair yield is observed that is consistent with production of virtual direct photons. This excess is used to infer the yield of real direct photons. In central Au+Au collisions, the excess of the direct photon yield over the $p+p$ is exponential in $p_{T}$, with inverse slope $T = 221\pm 19^{stat}\pm 19^{syst}$ MeV. Hydrodynamical models with initial temperatures ranging from $T_{init} \cong$300--600 MeV at times of 0.6--0.15 fm/$c$ after the collision are in qualitative agreement with the direct photon data in Au+Au. For low $p_{T}$&lt;1 GeV/$c$ the low mass region shows a further significant enhancement that increases with centrality and has an inverse slope of $T\cong$100 MeV. Theoretical models under predict the low mass, low $p_{T}$ enhancement. Error values of 9.99E+9 represent upper limit errors.
DOI: 10.17182/hepdata.145190.v1/t70
title: "Figure 37b pt.5" of "Detailed measurement of the $e^+ e^-$ pair continuum in $p+p$ and Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV and implications for direct photon production"

description: (Color online) $p_T$ spectra of $e^+e^-$ pairs in $p$+$p$ (left) and Au+Au (right) collisions for different mass bins, which are fully acceptance corrected. Au+Au spectra are divided by $N_{part}/2$. The solid curves show the expectations from the sum of the hadronic decay cocktail and the contribution from charmed mesons. The dashed curves show the sum of the cocktail and charmed meson contributions plus the contribution from direct photons calculated by converting the photon yield from Fig. 34 to the $e^+e^-$ pair yield using Eqs. (31) and (B14). Au$+$Au collision data shown.
description: PHENIX has measured the $e^{+}e^{-}$ pair continuum in $\sqrt{s_{NN}}$=200 GeV Au+Au and $p+p$ collisions over a wide range of mass and transverse momenta. The $e^{+}e^{-}$ yield is compared to the expectations from hadronic sources, based on PHENIX measurements. In the intermediate mass region, between the masses of the $\phi$ and the $J/\psi$ meson, the yield is consistent with expectations from correlated $c\bar c$ production, though other mechanisms are not ruled out. In the low mass region (below the $\phi$) the $p+p$ inclusive mass spectrum is well described by known contributions from light meson decays. In contrast, the Au+Au minimum bias inclusive mass spectrum in this region shows an enhancement by a factor of $4.7\pm 0.4^{stat}\pm 1.5^{syst}\pm 0.9^{model}$ At low mass ($m_{ee}$&lt;0.3 GeV/$c^{2}$) and high $p_{T}$ (1&lt;$p_{T}$&lt;5 GeV/$c$) an enhanced $e^{+}e^{-}$ pair yield is observed that is consistent with production of virtual direct photons. This excess is used to infer the yield of real direct photons. In central Au+Au collisions, the excess of the direct photon yield over the $p+p$ is exponential in $p_{T}$, with inverse slope $T = 221\pm 19^{stat}\pm 19^{syst}$ MeV. Hydrodynamical models with initial temperatures ranging from $T_{init} \cong$300--600 MeV at times of 0.6--0.15 fm/$c$ after the collision are in qualitative agreement with the direct photon data in Au+Au. For low $p_{T}$&lt;1 GeV/$c$ the low mass region shows a further significant enhancement that increases with centrality and has an inverse slope of $T\cong$100 MeV. Theoretical models under predict the low mass, low $p_{T}$ enhancement. Error values of 9.99E+9 represent upper limit errors.
DOI: 10.17182/hepdata.145190.v1/t71
title: "Figure 37b pt.6" of "Detailed measurement of the $e^+ e^-$ pair continuum in $p+p$ and Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV and implications for direct photon production"

description: (Color online) $p_T$ spectra of $e^+e^-$ pairs in $p$+$p$ (left) and Au+Au (right) collisions for different mass bins, which are fully acceptance corrected. Au+Au spectra are divided by $N_{part}/2$. The solid curves show the expectations from the sum of the hadronic decay cocktail and the contribution from charmed mesons. The dashed curves show the sum of the cocktail and charmed meson contributions plus the contribution from direct photons calculated by converting the photon yield from Fig. 34 to the $e^+e^-$ pair yield using Eqs. (31) and (B14). Au$+$Au collision data shown.
description: PHENIX has measured the $e^{+}e^{-}$ pair continuum in $\sqrt{s_{NN}}$=200 GeV Au+Au and $p+p$ collisions over a wide range of mass and transverse momenta. The $e^{+}e^{-}$ yield is compared to the expectations from hadronic sources, based on PHENIX measurements. In the intermediate mass region, between the masses of the $\phi$ and the $J/\psi$ meson, the yield is consistent with expectations from correlated $c\bar c$ production, though other mechanisms are not ruled out. In the low mass region (below the $\phi$) the $p+p$ inclusive mass spectrum is well described by known contributions from light meson decays. In contrast, the Au+Au minimum bias inclusive mass spectrum in this region shows an enhancement by a factor of $4.7\pm 0.4^{stat}\pm 1.5^{syst}\pm 0.9^{model}$ At low mass ($m_{ee}$&lt;0.3 GeV/$c^{2}$) and high $p_{T}$ (1&lt;$p_{T}$&lt;5 GeV/$c$) an enhanced $e^{+}e^{-}$ pair yield is observed that is consistent with production of virtual direct photons. This excess is used to infer the yield of real direct photons. In central Au+Au collisions, the excess of the direct photon yield over the $p+p$ is exponential in $p_{T}$, with inverse slope $T = 221\pm 19^{stat}\pm 19^{syst}$ MeV. Hydrodynamical models with initial temperatures ranging from $T_{init} \cong$300--600 MeV at times of 0.6--0.15 fm/$c$ after the collision are in qualitative agreement with the direct photon data in Au+Au. For low $p_{T}$&lt;1 GeV/$c$ the low mass region shows a further significant enhancement that increases with centrality and has an inverse slope of $T\cong$100 MeV. Theoretical models under predict the low mass, low $p_{T}$ enhancement. Error values of 9.99E+9 represent upper limit errors.
DOI: 10.17182/hepdata.145190.v1/t72
title: "Figure 37b pt.7" of "Detailed measurement of the $e^+ e^-$ pair continuum in $p+p$ and Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV and implications for direct photon production"

description: (Color online) $p_T$ spectra of $e^+e^-$ pairs in $p$+$p$ (left) and Au+Au (right) collisions for different mass bins, which are fully acceptance corrected. Au+Au spectra are divided by $N_{part}/2$. The solid curves show the expectations from the sum of the hadronic decay cocktail and the contribution from charmed mesons. The dashed curves show the sum of the cocktail and charmed meson contributions plus the contribution from direct photons calculated by converting the photon yield from Fig. 34 to the $e^+e^-$ pair yield using Eqs. (31) and (B14). Au$+$Au collision data shown.
description: PHENIX has measured the $e^{+}e^{-}$ pair continuum in $\sqrt{s_{NN}}$=200 GeV Au+Au and $p+p$ collisions over a wide range of mass and transverse momenta. The $e^{+}e^{-}$ yield is compared to the expectations from hadronic sources, based on PHENIX measurements. In the intermediate mass region, between the masses of the $\phi$ and the $J/\psi$ meson, the yield is consistent with expectations from correlated $c\bar c$ production, though other mechanisms are not ruled out. In the low mass region (below the $\phi$) the $p+p$ inclusive mass spectrum is well described by known contributions from light meson decays. In contrast, the Au+Au minimum bias inclusive mass spectrum in this region shows an enhancement by a factor of $4.7\pm 0.4^{stat}\pm 1.5^{syst}\pm 0.9^{model}$ At low mass ($m_{ee}$&lt;0.3 GeV/$c^{2}$) and high $p_{T}$ (1&lt;$p_{T}$&lt;5 GeV/$c$) an enhanced $e^{+}e^{-}$ pair yield is observed that is consistent with production of virtual direct photons. This excess is used to infer the yield of real direct photons. In central Au+Au collisions, the excess of the direct photon yield over the $p+p$ is exponential in $p_{T}$, with inverse slope $T = 221\pm 19^{stat}\pm 19^{syst}$ MeV. Hydrodynamical models with initial temperatures ranging from $T_{init} \cong$300--600 MeV at times of 0.6--0.15 fm/$c$ after the collision are in qualitative agreement with the direct photon data in Au+Au. For low $p_{T}$&lt;1 GeV/$c$ the low mass region shows a further significant enhancement that increases with centrality and has an inverse slope of $T\cong$100 MeV. Theoretical models under predict the low mass, low $p_{T}$ enhancement. Error values of 9.99E+9 represent upper limit errors.
DOI: 10.17182/hepdata.145190.v1/t73
title: "Figure 37b pt.8" of "Detailed measurement of the $e^+ e^-$ pair continuum in $p+p$ and Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV and implications for direct photon production"

description: (Color online) $p_T$ spectra of $e^+e^-$ pairs in $p$+$p$ (left) and Au+Au (right) collisions for different mass bins, which are fully acceptance corrected. Au+Au spectra are divided by $N_{part}/2$. The solid curves show the expectations from the sum of the hadronic decay cocktail and the contribution from charmed mesons. The dashed curves show the sum of the cocktail and charmed meson contributions plus the contribution from direct photons calculated by converting the photon yield from Fig. 34 to the $e^+e^-$ pair yield using Eqs. (31) and (B14). Au$+$Au collision data shown.
description: PHENIX has measured the $e^{+}e^{-}$ pair continuum in $\sqrt{s_{NN}}$=200 GeV Au+Au and $p+p$ collisions over a wide range of mass and transverse momenta. The $e^{+}e^{-}$ yield is compared to the expectations from hadronic sources, based on PHENIX measurements. In the intermediate mass region, between the masses of the $\phi$ and the $J/\psi$ meson, the yield is consistent with expectations from correlated $c\bar c$ production, though other mechanisms are not ruled out. In the low mass region (below the $\phi$) the $p+p$ inclusive mass spectrum is well described by known contributions from light meson decays. In contrast, the Au+Au minimum bias inclusive mass spectrum in this region shows an enhancement by a factor of $4.7\pm 0.4^{stat}\pm 1.5^{syst}\pm 0.9^{model}$ At low mass ($m_{ee}$&lt;0.3 GeV/$c^{2}$) and high $p_{T}$ (1&lt;$p_{T}$&lt;5 GeV/$c$) an enhanced $e^{+}e^{-}$ pair yield is observed that is consistent with production of virtual direct photons. This excess is used to infer the yield of real direct photons. In central Au+Au collisions, the excess of the direct photon yield over the $p+p$ is exponential in $p_{T}$, with inverse slope $T = 221\pm 19^{stat}\pm 19^{syst}$ MeV. Hydrodynamical models with initial temperatures ranging from $T_{init} \cong$300--600 MeV at times of 0.6--0.15 fm/$c$ after the collision are in qualitative agreement with the direct photon data in Au+Au. For low $p_{T}$&lt;1 GeV/$c$ the low mass region shows a further significant enhancement that increases with centrality and has an inverse slope of $T\cong$100 MeV. Theoretical models under predict the low mass, low $p_{T}$ enhancement. Error values of 9.99E+9 represent upper limit errors.
DOI: 10.5281/zenodo.17527248
title: TABLE 1 in Discovery of two crania of Equus (Sussemionus) ovodovi Eisenmann & Vasiliev, 2011 (Mammalia, Perissodactyla) from the Late Pleistocene of Khakassia, Russia

description: TABLE 1. — Measurements (in mm) of Equus (Sussemionus) ovodovi Eisenmann & Vasiliev, 2011 crania (Table) and Simpson’s ratio diagrams (Figure). Measures: 2-5, palatal length sensu stricto; 3, vomerine length; 4, postvomerine length; 5, muzzle length; 9, length of choanae; 10, greatest choanal breadth; 13, frontal breadth; 16, breadth of the supra-occipital (lambdoidal) crest; 17, muzzle breadth at the posterior borders of I3; 17bis, least muzzle breadth between the crests; 20, height of the external auditive meatus; 23, anterior ocular line; 25, facial height in front of P2; 28, cranial height; 31, length of the naso-incisival notch; 32, cheek length.
MeasurementsMeasure numberDm53/59.B1gl192EBK Ba2 C1(B) 384Dmanisi E. vekuaeFanatics E. ovodovi 1Fanatics E. ovodovi 2Emine Bair Khosar E. hydruntinus57.21647.446–52.9345.123371330–320118.73107.6118118101.5101.84108107.2101.2106.8113.62-5125119.6108119.3103.85121.6118.7–8855.3176263.8–57.441.517bis42.542.2–40.3195.913198.419719218447.6104443.445.249.5101.525–85.3–88.889.52882.891.6–9062.5956.8–––14.42012.2–13.5–143.031160141.5–132.1162.332154173–170433.41–459–409Log10 E.h.o.1.75716–0.082–0.095––0.0342.538230.031–0.019––0.0332.0743–0.043–0.003–0.003–0.0682.00840.0260.022–0.0030.0212.0552-50.0420.022–0.0220.0212.01650.0690.058––0.0721.743170.0500.062–0.0161.61817bis0.0100.007––0.0132.292130.0060.002–0.009–0.0271.67810–0.034–0.040–0.0220.0172.00625––0.076––0.0581.95228–0.0340.010–0.0021.7969–0.042–––1.15820–0.072––0.028–2.155310.049–0.005––0.0342.21032–0.0230.028–0.020
description: Published as part of Eisenmann, Véra & Vasiliev, Sergei K., 2025, Discovery of two crania of Equus (Sussemionus) ovodovi Eisenmann & Vasiliev, 2011 (Mammalia, Perissodactyla) from the Late Pleistocene of Khakassia, Russia, pp. 716 in Geodiversitas 47 (19) on page 716, DOI: 10.5252/geodiversitas2025v47a19, http://zenodo.org/record/17520509