cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.96550.v1/t2
title: "Figure 7-2" of "Azimuthal anisotropy of pi^0 and eta mesons in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\eta$ meson $v_2, 20-60\%$ centrality
description: BNL-RHIC. The azimuthal anisotropy coefficients $v_2$ and $v_4$ of $\pi^0$ and $\eta$ mesons are measured in Au+Au collisions at $\sqrt{s_NN}$=200 GeV, as a function of transverse momentum $p_T$ (1-14 GeV/c) and centrality. The extracted $v_2$ coefficients are found to be consistent between the two meson species over the measured $p_T$ range. The ratio of $v_4/v_2^2$ for $\pi^0$ mesons is found to be independent of $p_T$ for 1-9 GeV/$c$, implying a lack of sensitivity of the ratio to the change of underlying physics with $p_T$. Furthermore, the ratio of $v_4/v_2^2$ is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
DOI: 10.17182/hepdata.96550.v1/t3
title: "Figure 8-1" of "Azimuthal anisotropy of pi^0 and eta mesons in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\pi^0$ meson $v_4, 0-20\%$ centrality
description: BNL-RHIC. The azimuthal anisotropy coefficients $v_2$ and $v_4$ of $\pi^0$ and $\eta$ mesons are measured in Au+Au collisions at $\sqrt{s_NN}$=200 GeV, as a function of transverse momentum $p_T$ (1-14 GeV/c) and centrality. The extracted $v_2$ coefficients are found to be consistent between the two meson species over the measured $p_T$ range. The ratio of $v_4/v_2^2$ for $\pi^0$ mesons is found to be independent of $p_T$ for 1-9 GeV/$c$, implying a lack of sensitivity of the ratio to the change of underlying physics with $p_T$. Furthermore, the ratio of $v_4/v_2^2$ is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
DOI: 10.17182/hepdata.96550.v1/t4
title: "Figure 8-2" of "Azimuthal anisotropy of pi^0 and eta mesons in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\pi^0$ meson $v_4, 20-40\%$ centrality
description: BNL-RHIC. The azimuthal anisotropy coefficients $v_2$ and $v_4$ of $\pi^0$ and $\eta$ mesons are measured in Au+Au collisions at $\sqrt{s_NN}$=200 GeV, as a function of transverse momentum $p_T$ (1-14 GeV/c) and centrality. The extracted $v_2$ coefficients are found to be consistent between the two meson species over the measured $p_T$ range. The ratio of $v_4/v_2^2$ for $\pi^0$ mesons is found to be independent of $p_T$ for 1-9 GeV/$c$, implying a lack of sensitivity of the ratio to the change of underlying physics with $p_T$. Furthermore, the ratio of $v_4/v_2^2$ is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
DOI: 10.17182/hepdata.96550.v1/t5
title: "Figure 8-3" of "Azimuthal anisotropy of pi^0 and eta mesons in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\pi^0$ meson $v_4, 40-60\%$ centrality
description: BNL-RHIC. The azimuthal anisotropy coefficients $v_2$ and $v_4$ of $\pi^0$ and $\eta$ mesons are measured in Au+Au collisions at $\sqrt{s_NN}$=200 GeV, as a function of transverse momentum $p_T$ (1-14 GeV/c) and centrality. The extracted $v_2$ coefficients are found to be consistent between the two meson species over the measured $p_T$ range. The ratio of $v_4/v_2^2$ for $\pi^0$ mesons is found to be independent of $p_T$ for 1-9 GeV/$c$, implying a lack of sensitivity of the ratio to the change of underlying physics with $p_T$. Furthermore, the ratio of $v_4/v_2^2$ is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
DOI: 10.17182/hepdata.96550.v1/t7
title: "Figure 9-1" of "Azimuthal anisotropy of pi^0 and eta mesons in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\pi^0$ meson $v_4/v_2^2, 0-20\%$ centrality
description: BNL-RHIC. The azimuthal anisotropy coefficients $v_2$ and $v_4$ of $\pi^0$ and $\eta$ mesons are measured in Au+Au collisions at $\sqrt{s_NN}$=200 GeV, as a function of transverse momentum $p_T$ (1-14 GeV/c) and centrality. The extracted $v_2$ coefficients are found to be consistent between the two meson species over the measured $p_T$ range. The ratio of $v_4/v_2^2$ for $\pi^0$ mesons is found to be independent of $p_T$ for 1-9 GeV/$c$, implying a lack of sensitivity of the ratio to the change of underlying physics with $p_T$. Furthermore, the ratio of $v_4/v_2^2$ is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
DOI: 10.3535/5z5-qqr-ycg
title: Tilia cordata Mill.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.17182/hepdata.96550.v1/t10
title: "Figure 9-4" of "Azimuthal anisotropy of pi^0 and eta mesons in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\pi^0$ meson $v_4/v_2^2, 20-60\%$ centrality
description: BNL-RHIC. The azimuthal anisotropy coefficients $v_2$ and $v_4$ of $\pi^0$ and $\eta$ mesons are measured in Au+Au collisions at $\sqrt{s_NN}$=200 GeV, as a function of transverse momentum $p_T$ (1-14 GeV/c) and centrality. The extracted $v_2$ coefficients are found to be consistent between the two meson species over the measured $p_T$ range. The ratio of $v_4/v_2^2$ for $\pi^0$ mesons is found to be independent of $p_T$ for 1-9 GeV/$c$, implying a lack of sensitivity of the ratio to the change of underlying physics with $p_T$. Furthermore, the ratio of $v_4/v_2^2$ is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
DOI: 10.17182/hepdata.96550.v1/t6
title: "Figure 8-4" of "Azimuthal anisotropy of pi^0 and eta mesons in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\pi^0$ meson $v_4, 20-60\%$ centrality
description: BNL-RHIC. The azimuthal anisotropy coefficients $v_2$ and $v_4$ of $\pi^0$ and $\eta$ mesons are measured in Au+Au collisions at $\sqrt{s_NN}$=200 GeV, as a function of transverse momentum $p_T$ (1-14 GeV/c) and centrality. The extracted $v_2$ coefficients are found to be consistent between the two meson species over the measured $p_T$ range. The ratio of $v_4/v_2^2$ for $\pi^0$ mesons is found to be independent of $p_T$ for 1-9 GeV/$c$, implying a lack of sensitivity of the ratio to the change of underlying physics with $p_T$. Furthermore, the ratio of $v_4/v_2^2$ is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
DOI: 10.17182/hepdata.96550.v1/t8
title: "Figure 9-2" of "Azimuthal anisotropy of pi^0 and eta mesons in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\pi^0$ meson $v_4/v_2^2, 20-40\%$ centrality
description: BNL-RHIC. The azimuthal anisotropy coefficients $v_2$ and $v_4$ of $\pi^0$ and $\eta$ mesons are measured in Au+Au collisions at $\sqrt{s_NN}$=200 GeV, as a function of transverse momentum $p_T$ (1-14 GeV/c) and centrality. The extracted $v_2$ coefficients are found to be consistent between the two meson species over the measured $p_T$ range. The ratio of $v_4/v_2^2$ for $\pi^0$ mesons is found to be independent of $p_T$ for 1-9 GeV/$c$, implying a lack of sensitivity of the ratio to the change of underlying physics with $p_T$. Furthermore, the ratio of $v_4/v_2^2$ is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
DOI: 10.17182/hepdata.96550.v1/t9
title: "Figure 9-3" of "Azimuthal anisotropy of pi^0 and eta mesons in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\pi^0$ meson $v_4/v_2^2, 40-60\%$ centrality
description: BNL-RHIC. The azimuthal anisotropy coefficients $v_2$ and $v_4$ of $\pi^0$ and $\eta$ mesons are measured in Au+Au collisions at $\sqrt{s_NN}$=200 GeV, as a function of transverse momentum $p_T$ (1-14 GeV/c) and centrality. The extracted $v_2$ coefficients are found to be consistent between the two meson species over the measured $p_T$ range. The ratio of $v_4/v_2^2$ for $\pi^0$ mesons is found to be independent of $p_T$ for 1-9 GeV/$c$, implying a lack of sensitivity of the ratio to the change of underlying physics with $p_T$. Furthermore, the ratio of $v_4/v_2^2$ is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
DOI: 10.17182/hepdata.96561.v2/t1
title: "Figure 5" of "Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: Invariant yields of neutral pions, all centralities
description: BNL-RHIC. The PHENIX experiment has measured the production of neutral pions in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, $p_T$, to 20 GeV/c. The production ratio of $\eta/\pi^0$ is 0.46$\pm$0.01(stat)$\pm$0.05(syst), constant with $p_T$ and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p+p and d+Au values. The production of $\pi^0$ is suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor, $R_{AA}$, vs $p_T$, with a slope of 0.0106$^(+0.0034)_(-0.0029)[GeV/c]^-1$, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing $p_T$. To study the path length dependence of suppression, the $\pi^0$ yield was measured at different angles with respect to the event plane; a strong azimuthal dependence of the $\pi^0 R_{AA}$ is observed. The data are compared to theoretical models of parton energy loss as a function of the path length, L, in the medium. Models based on pQCD are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and AdS/CFT for the soft interactions is consistent with the data.
DOI: 10.3535/5p0-mne-8zs
title: Fagus sylvatica L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/wqv-zm8-ds0
title: Phragmites australis (Cav.) Trin. ex Steud.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.17182/hepdata.96561.v2/t2
title: "Figure 8" of "Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\Eta/ \pi^0 ratios
description: BNL-RHIC. The PHENIX experiment has measured the production of neutral pions in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, $p_T$, to 20 GeV/c. The production ratio of $\eta/\pi^0$ is 0.46$\pm$0.01(stat)$\pm$0.05(syst), constant with $p_T$ and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p+p and d+Au values. The production of $\pi^0$ is suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor, $R_{AA}$, vs $p_T$, with a slope of 0.0106$^(+0.0034)_(-0.0029)[GeV/c]^-1$, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing $p_T$. To study the path length dependence of suppression, the $\pi^0$ yield was measured at different angles with respect to the event plane; a strong azimuthal dependence of the $\pi^0 R_{AA}$ is observed. The data are compared to theoretical models of parton energy loss as a function of the path length, L, in the medium. Models based on pQCD are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and AdS/CFT for the soft interactions is consistent with the data.
DOI: 10.17182/hepdata.96561.v2/t3
title: "Figure 11" of "Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $\pi^0$ nuclear modification factors
description: BNL-RHIC. The PHENIX experiment has measured the production of neutral pions in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, $p_T$, to 20 GeV/c. The production ratio of $\eta/\pi^0$ is 0.46$\pm$0.01(stat)$\pm$0.05(syst), constant with $p_T$ and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p+p and d+Au values. The production of $\pi^0$ is suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor, $R_{AA}$, vs $p_T$, with a slope of 0.0106$^(+0.0034)_(-0.0029)[GeV/c]^-1$, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing $p_T$. To study the path length dependence of suppression, the $\pi^0$ yield was measured at different angles with respect to the event plane; a strong azimuthal dependence of the $\pi^0 R_{AA}$ is observed. The data are compared to theoretical models of parton energy loss as a function of the path length, L, in the medium. Models based on pQCD are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and AdS/CFT for the soft interactions is consistent with the data.
DOI: 10.17182/hepdata.96561.v2/t4
title: "Figure 20-1" of "Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 0^{\circ}-15^{\circ}$
description: BNL-RHIC. The PHENIX experiment has measured the production of neutral pions in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, $p_T$, to 20 GeV/c. The production ratio of $\eta/\pi^0$ is 0.46$\pm$0.01(stat)$\pm$0.05(syst), constant with $p_T$ and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p+p and d+Au values. The production of $\pi^0$ is suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor, $R_{AA}$, vs $p_T$, with a slope of 0.0106$^(+0.0034)_(-0.0029)[GeV/c]^-1$, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing $p_T$. To study the path length dependence of suppression, the $\pi^0$ yield was measured at different angles with respect to the event plane; a strong azimuthal dependence of the $\pi^0 R_{AA}$ is observed. The data are compared to theoretical models of parton energy loss as a function of the path length, L, in the medium. Models based on pQCD are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and AdS/CFT for the soft interactions is consistent with the data.
DOI: 10.17182/hepdata.96561.v2/t5
title: "Figure 20-2" of "Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 15^{\circ}-30^{\circ}$
description: BNL-RHIC. The PHENIX experiment has measured the production of neutral pions in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, $p_T$, to 20 GeV/c. The production ratio of $\eta/\pi^0$ is 0.46$\pm$0.01(stat)$\pm$0.05(syst), constant with $p_T$ and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p+p and d+Au values. The production of $\pi^0$ is suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor, $R_{AA}$, vs $p_T$, with a slope of 0.0106$^(+0.0034)_(-0.0029)[GeV/c]^-1$, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing $p_T$. To study the path length dependence of suppression, the $\pi^0$ yield was measured at different angles with respect to the event plane; a strong azimuthal dependence of the $\pi^0 R_{AA}$ is observed. The data are compared to theoretical models of parton energy loss as a function of the path length, L, in the medium. Models based on pQCD are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and AdS/CFT for the soft interactions is consistent with the data.
DOI: 10.17182/hepdata.96561.v2/t6
title: "Figure 20-3" of "Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 30^{\circ}-45^{\circ}$
description: BNL-RHIC. The PHENIX experiment has measured the production of neutral pions in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, $p_T$, to 20 GeV/c. The production ratio of $\eta/\pi^0$ is 0.46$\pm$0.01(stat)$\pm$0.05(syst), constant with $p_T$ and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p+p and d+Au values. The production of $\pi^0$ is suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor, $R_{AA}$, vs $p_T$, with a slope of 0.0106$^(+0.0034)_(-0.0029)[GeV/c]^-1$, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing $p_T$. To study the path length dependence of suppression, the $\pi^0$ yield was measured at different angles with respect to the event plane; a strong azimuthal dependence of the $\pi^0 R_{AA}$ is observed. The data are compared to theoretical models of parton energy loss as a function of the path length, L, in the medium. Models based on pQCD are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and AdS/CFT for the soft interactions is consistent with the data.
DOI: 10.17182/hepdata.96561.v2/t7
title: "Figure 20-4" of "Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: $pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 45^{\circ}-60^{\circ}$
description: BNL-RHIC. The PHENIX experiment has measured the production of neutral pions in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, $p_T$, to 20 GeV/c. The production ratio of $\eta/\pi^0$ is 0.46$\pm$0.01(stat)$\pm$0.05(syst), constant with $p_T$ and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p+p and d+Au values. The production of $\pi^0$ is suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor, $R_{AA}$, vs $p_T$, with a slope of 0.0106$^(+0.0034)_(-0.0029)[GeV/c]^-1$, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing $p_T$. To study the path length dependence of suppression, the $\pi^0$ yield was measured at different angles with respect to the event plane; a strong azimuthal dependence of the $\pi^0 R_{AA}$ is observed. The data are compared to theoretical models of parton energy loss as a function of the path length, L, in the medium. Models based on pQCD are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and AdS/CFT for the soft interactions is consistent with the data.
DOI: 10.3535/c11-n02-360
title: Robinia pseudoacacia L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.17182/hepdata.96561.v1/t1
title: "Figure 5" of "Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: Invariant yields of neutral pions, all centralities
description: BNL-RHIC. The PHENIX experiment has measured the production of neutral pions in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, $p_T$, to 20 GeV/c. The production ratio of $\eta/\pi^0$ is 0.46$\pm$0.01(stat)$\pm$0.05(syst), constant with p_T and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p+p and d+Au values. The production of $\pi^0$ is suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor, $R_AA$, vs $p_T$, with a slope of 0.0106$^(+0.0034)_(-0.0029)[GeV/c]^-1$, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing p_T. To study the path length dependence of suppression, the $\pi^0$ yield was measured at different angles with respect to the event plane; a strong azimuthal dependence of the $\pi^0 R_AA$ is observed. The data are compared to theoretical models of parton energy loss as a function of the path length, L, in the medium. Models based on pQCD are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and AdS/CFT for the soft interactions is consistent with the data.