cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.145190.v1/t26
title: "Figure 30a 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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/t27
title: "Figure 30a pt.9" 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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/t28
title: "Figure 30a pt.10" 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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/t29
title: "Figure 30b pt.1" 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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/t30
title: "Figure 30b 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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/t31
title: "Figure 30b 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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/t32
title: "Figure 30b 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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/t33
title: "Figure 30b 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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/t34
title: "Figure 30b 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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/t35
title: "Figure 30b 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) $e^+e^-$ pair invariant mass distributions in $p$+$p$ (left) and minimum bias Au+Au collisions (right). The $p_T$ ranges are shown in the legend. The solid curves represent the cocktail of hadronic sources (see Sec. IV) and include contribution from charm calculated by PYTHIA using the cross section from Ref. [48] scaled by $N_{coll}$.
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.