cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.143254.v1/t6
title: "Fig. 1 Part 6" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Invariant $\pi^0$ yields at midrapidity as a function of $p_T$ for minimum bias and nine centralities in $Au\ +\ Au$ at $\sqrt{s_{NN}} = 200\ GeV$ [0%–10% (80%–92%) is most central (peripheral)]. The labels "uncorr." and "corr." include systematic errors that are uncorrelated and correlated point-to-point, respectively.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t7
title: "Fig. 1 Part 7" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Invariant $\pi^0$ yields at midrapidity as a function of $p_T$ for minimum bias and nine centralities in $Au\ +\ Au$ at $\sqrt{s_{NN}} = 200\ GeV$ [0%–10% (80%–92%) is most central (peripheral)]. The labels "uncorr." and "corr." include systematic errors that are uncorrelated and correlated point-to-point, respectively.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t8
title: "Fig. 1 Part 8" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Invariant $\pi^0$ yields at midrapidity as a function of $p_T$ for minimum bias and nine centralities in $Au\ +\ Au$ at $\sqrt{s_{NN}} = 200\ GeV$ [0%–10% (80%–92%) is most central (peripheral)]. The labels "uncorr." and "corr." include systematic errors that are uncorrelated and correlated point-to-point, respectively.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t9
title: "Fig. 1 Part 9" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Invariant $\pi^0$ yields at midrapidity as a function of $p_T$ for minimum bias and nine centralities in $Au\ +\ Au$ at $\sqrt{s_{NN}} = 200\ GeV$ [0%–10% (80%–92%) is most central (peripheral)]. The labels "uncorr." and "corr." include systematic errors that are uncorrelated and correlated point-to-point, respectively.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t12
title: "Fig. 1 Part 12" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Invariant $\pi^0$ yields at midrapidity as a function of $p_T$ for minimum bias and nine centralities in $Au\ +\ Au$ at $\sqrt{s_{NN}} = 200\ GeV$ [0%–10% (80%–92%) is most central (peripheral)]. The labels "uncorr." and "corr." include systematic errors that are uncorrelated and correlated point-to-point, respectively.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t13
title: "Fig. 1 Part 13" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Invariant $\pi^0$ yields at midrapidity as a function of $p_T$ for minimum bias and nine centralities in $Au\ +\ Au$ at $\sqrt{s_{NN}} = 200\ GeV$ [0%–10% (80%–92%) is most central (peripheral)]. The labels "uncorr." and "corr." include systematic errors that are uncorrelated and correlated point-to-point, respectively.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t14
title: "Fig. 2 Part 1" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t15
title: "Fig. 2 Part 2" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t16
title: "Fig. 2 Part 3" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t17
title: "Fig. 2 Part 4" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t18
title: "Fig. 2 Part 5" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t19
title: "Fig. 2 Part 6" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t20
title: "Fig. 2 Part 7" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t21
title: "Fig. 2 Part 8" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t22
title: "Fig. 2 Part 9" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t23
title: "Fig. 2 Part 10" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t24
title: "Fig. 2 Part 11" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t25
title: "Fig. 2 Part 12" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
DOI: 10.17182/hepdata.143254.v1/t26
title: "Fig. 2 Part 13" of "Suppressed pi0 production at large transverse momentum in central Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Nuclear modification factor $R_{AA}(p_T)$ for $\pi^0$ in Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV. The error bars include all point-to-point experimental ($p+p$, Au+Au) errors. The label "sys(uncorr)" refers to the uncorrelated point-to-point uncertainty (which includes statistical errors), while "sys(norm)" is the normalization uncertainty.
description: Transverse momentum spectra of neutral pions in the range $1 &lt; p_T &lt; 10Gev/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au $+$ Au collisions at $\sqrt{s_{NN}} = 200\ GeV$. The $\pi^0$ multiplicity in central reactions is significantly below the yields measured at the same $\sqrt{s_{NN}}$ in peripheral Au $+$ Au and $p+p$ reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the supression factor is ~2.5 at $p_T = 2GeV/c$ and increases to ~4-5 at $p_T \approx 4\ GeV/c$. At larger $p_T$, the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.