cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.98964.v1/t1
title: "Figure 1 right bottom" of "Observation of Two-source Interference in the Photoproduction Reaction $Au Au \to Au Au \rho^0$"

description: Rapidity (left) and $M_{\pi\pi}$ (right) of the $\pi^{+}\pi^{-}$ distributions for the topology (exclusive $\rho^0$, top) and MB (Coulomb breakup, bottom) samples. The points with statistical error bars are the data, and the histograms are the simulations. The ’notch’ in the topology data around y = 0 is due to the explicit rapidity cut to remove cosmic-ray backgrounds.
description: In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a $\rho^0$. The $\rho^0$ production occurs in two well-separated (median impact parameters of 20 and 40 fermi for the cases considered here) nuclei, so the system forms a 2-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing $\rho^0$ production. Since the $\rho^0$ decay before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled non-local wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87(stat.)$\pm$8 (syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors, of 23% at the 90% confidence level.
DOI: 10.17182/hepdata.98964.v1/t2
title: "Figure 1 right top" of "Observation of Two-source Interference in the Photoproduction Reaction $Au Au \to Au Au \rho^0$"

description: Rapidity (left) and $M_{\pi\pi}$ (right) of the $\pi^{+}\pi^{-}$ distributions for the topology (exclusive $\rho^0$, top) and MB (Coulomb breakup, bottom) samples. The points with statistical error bars are the data, and the histograms are the simulations. The ’notch’ in the topology data around y = 0 is due to the explicit rapidity cut to remove cosmic-ray backgrounds.
description: In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a $\rho^0$. The $\rho^0$ production occurs in two well-separated (median impact parameters of 20 and 40 fermi for the cases considered here) nuclei, so the system forms a 2-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing $\rho^0$ production. Since the $\rho^0$ decay before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled non-local wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87(stat.)$\pm$8 (syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors, of 23% at the 90% confidence level.
DOI: 10.17182/hepdata.98964.v1/t3
title: "Figure 2" of "Observation of Two-source Interference in the Photoproduction Reaction $Au Au \to Au Au \rho^0$"

description: Raw (uncorrected) ρ0 $t_{\perp}$-spectrum in the range 0.0 &lt; |y| &lt; 0.5 for the MB data. The points are data, with statistical errors. The dashed (filled) histogram is a simulation with an interference term (“Int”), while the solid histogram is a simulation without interference (“NoInt”). The handful of events histogrammed at the bottom of the plot are the wrong-sign ($\pi^{+}\pi^{+}+\pi^{-}\pi^{-}$) events, used to estimate the combinatorial background.
description: In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a $\rho^0$. The $\rho^0$ production occurs in two well-separated (median impact parameters of 20 and 40 fermi for the cases considered here) nuclei, so the system forms a 2-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing $\rho^0$ production. Since the $\rho^0$ decay before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled non-local wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87(stat.)$\pm$8 (syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors, of 23% at the 90% confidence level.
DOI: 10.3535/g9n-w9t-bse
title: Trema orientale (L.) Blume

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/nst-49b-mf7
title: Chloranthus elatior Link

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.17182/hepdata.98964.v1/t4
title: "Figure 3 left top" of "Observation of Two-source Interference in the Photoproduction Reaction $Au Au \to Au Au \rho^0$"

description: Efficiency corrected $t_{\perp}$ spectrum for $\rho^{0}$ from (top) minium bias and (bottom) topology data, for mid-rapidity (left) and larger rapidity (right) samples. The points are the data, while the solid lines are the results of fits to Eq. (3).
description: In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a $\rho^0$. The $\rho^0$ production occurs in two well-separated (median impact parameters of 20 and 40 fermi for the cases considered here) nuclei, so the system forms a 2-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing $\rho^0$ production. Since the $\rho^0$ decay before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled non-local wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87(stat.)$\pm$8 (syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors, of 23% at the 90% confidence level.
DOI: 10.17182/hepdata.98964.v1/t5
title: "Figure 3 right top" of "Observation of Two-source Interference in the Photoproduction Reaction $Au Au \to Au Au \rho^0$"

description: Efficiency corrected $t_{\perp}$ spectrum for $\rho^{0}$ from (top) minium bias and (bottom) topology data, for mid-rapidity (left) and larger rapidity (right) samples. The points are the data, while the solid lines are the results of fits to Eq. (3).
description: In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a $\rho^0$. The $\rho^0$ production occurs in two well-separated (median impact parameters of 20 and 40 fermi for the cases considered here) nuclei, so the system forms a 2-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing $\rho^0$ production. Since the $\rho^0$ decay before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled non-local wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87(stat.)$\pm$8 (syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors, of 23% at the 90% confidence level.
DOI: 10.17182/hepdata.98964.v1/t6
title: "Figure 3 left bottom" of "Observation of Two-source Interference in the Photoproduction Reaction $Au Au \to Au Au \rho^0$"

description: Efficiency corrected $t_{\perp}$ spectrum for $\rho^{0}$ from (top) minium bias and (bottom) topology data, for mid-rapidity (left) and larger rapidity (right) samples. The points are the data, while the solid lines are the results of fits to Eq. (3).
description: In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a $\rho^0$. The $\rho^0$ production occurs in two well-separated (median impact parameters of 20 and 40 fermi for the cases considered here) nuclei, so the system forms a 2-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing $\rho^0$ production. Since the $\rho^0$ decay before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled non-local wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87(stat.)$\pm$8 (syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors, of 23% at the 90% confidence level.
DOI: 10.17182/hepdata.98964.v1/t7
title: "Figure 3 right bottom" of "Observation of Two-source Interference in the Photoproduction Reaction $Au Au \to Au Au \rho^0$"

description: Efficiency corrected $t_{\perp}$ spectrum for $\rho^{0}$ from (top) minium bias and (bottom) topology data, for mid-rapidity (left) and larger rapidity (right) samples. The points are the data, while the solid lines are the results of fits to Eq. (3).
description: In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a $\rho^0$. The $\rho^0$ production occurs in two well-separated (median impact parameters of 20 and 40 fermi for the cases considered here) nuclei, so the system forms a 2-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing $\rho^0$ production. Since the $\rho^0$ decay before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled non-local wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87(stat.)$\pm$8 (syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors, of 23% at the 90% confidence level.
DOI: 10.25549/vercoutere-ouc110610693
title: Woman dancer standing in front of a stage

description: One female dancer outlined in black with red legs, tan body and black leotard standing in front of a stage on a black floor with green walls; includes legs and feet of three other women dancing on the stage. See description of 001 for OT notes.
DOI: 10.3535/frm-fn4-381
title: Pterospermum argenteum Tardieu

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.17182/hepdata.98965.v1/t1
title: "Figure 1 (a)" of "Spectra of identified high-$p_{T}$ $\pi^\pm$ and $p(\bar{p})$ in Cu$+$Cu collisions at $\sqrt{s_{NN}}=200$ GeV"

description: Transverse momentum spectra of pions (a) and protons (b) produced in Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV. Data are presented for four centrality classes: 0-10%, 10-20%, 20-40% and 40-60%. Closed and open symbols are used for particles and antiparticles, respectively. For clarity, data are separated by powers of four.
description: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3&lt;$p_{T}$&lt;10 GeV/c) from Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-$p_{T}$ and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au+Au data, and allow the detailed exploration for the on-set of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
DOI: 10.17182/hepdata.98965.v1/t2
title: "Figure 1 (b)" of "Spectra of identified high-$p_{T}$ $\pi^\pm$ and $p(\bar{p})$ in Cu$+$Cu collisions at $\sqrt{s_{NN}}=200$ GeV"

description: Transverse momentum spectra of pions (a) and protons (b) produced in Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV. Data are presented for four centrality classes: 0-10%, 10-20%, 20-40% and 40-60%. Closed and open symbols are used for particles and antiparticles, respectively. For clarity, data are separated by powers of four.
description: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3&lt;$p_{T}$&lt;10 GeV/c) from Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-$p_{T}$ and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au+Au data, and allow the detailed exploration for the on-set of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
DOI: 10.17182/hepdata.98965.v1/t3
title: "Figure 2 (a)" of "Spectra of identified high-$p_{T}$ $\pi^\pm$ and $p(\bar{p})$ in Cu$+$Cu collisions at $\sqrt{s_{NN}}=200$ GeV"

description: Anti-particle to particle ratios, as a function of transverse momentum for pions (a) and protons (b). Data for the four centrality classes show little centrality dependence. Errors are statistical only.
description: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3&lt;$p_{T}$&lt;10 GeV/c) from Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-$p_{T}$ and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au+Au data, and allow the detailed exploration for the on-set of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
DOI: 10.17182/hepdata.98965.v1/t4
title: "Figure 2 (b)" of "Spectra of identified high-$p_{T}$ $\pi^\pm$ and $p(\bar{p})$ in Cu$+$Cu collisions at $\sqrt{s_{NN}}=200$ GeV"

description: Anti-particle to particle ratios, as a function of transverse momentum for pions (a) and protons (b). Data for the four centrality classes show little centrality dependence. Errors are statistical only.
description: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3&lt;$p_{T}$&lt;10 GeV/c) from Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-$p_{T}$ and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au+Au data, and allow the detailed exploration for the on-set of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
DOI: 10.17182/hepdata.98965.v1/t5
title: "Figure 3 (a)" of "Spectra of identified high-$p_{T}$ $\pi^\pm$ and $p(\bar{p})$ in Cu$+$Cu collisions at $\sqrt{s_{NN}}=200$ GeV"

description: (Color online) (a) Nuclear modification factor, RAA, for charged pions ($\pi^{+}+\pi^{−}$) in Cu+Cu (filled symbols) and Au+Au (open symbols) collisions at $\sqrt{s_{NN}}$=200 GeV. Error bands are shown for most peripheral and most central Cu+Cu data to represent evolution of the systematic uncertainties for this dataset. Error boxes at $R_{AA}$=1 represent Cu+Cu scale uncertainties due to the number of collisions and from $pp$ spectra normalization.
description: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3&lt;$p_{T}$&lt;10 GeV/c) from Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-$p_{T}$ and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au+Au data, and allow the detailed exploration for the on-set of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
DOI: 10.3535/s26-n32-6c5
title: Primulaceae Batsch ex Borkh.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.17182/hepdata.98965.v1/t6
title: "Figure 3 (b)" of "Spectra of identified high-$p_{T}$ $\pi^\pm$ and $p(\bar{p})$ in Cu$+$Cu collisions at $\sqrt{s_{NN}}=200$ GeV"

description: (Color online) (b) Integrated pion $R_{AA}$ over the range $5
description: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3&lt;$p_{T}$&lt;10 GeV/c) from Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-$p_{T}$ and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au+Au data, and allow the detailed exploration for the on-set of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
DOI: 10.17182/hepdata.98965.v1/t7
title: "Figure 4 (a)" of "Spectra of identified high-$p_{T}$ $\pi^\pm$ and $p(\bar{p})$ in Cu$+$Cu collisions at $\sqrt{s_{NN}}=200$ GeV"

description: (Color online) (a) Nuclear modification factor, RAA, for protons and anti-protons ($p + \overline{p}$) in Cu+Cu (filled symbols) and Au+Au (open symbols) collisions at $\sqrt{s_{NN}}$=200 GeV. Error band is shown for most central Cu+Cu data to represent characteristic systematic uncertainties for Cu+Cu data. Error boxes at $R_{AA}$=1 represent Cu+Cu scale uncertainties due to the number of collisions and from pp spectra normalization.
description: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3&lt;$p_{T}$&lt;10 GeV/c) from Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-$p_{T}$ and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au+Au data, and allow the detailed exploration for the on-set of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
DOI: 10.17182/hepdata.98965.v1/t8
title: "Figure 5 (a)" of "Spectra of identified high-$p_{T}$ $\pi^\pm$ and $p(\bar{p})$ in Cu$+$Cu collisions at $\sqrt{s_{NN}}=200$ GeV"

description: (Color online) (a) Ratio of protons and anti-protons to charged pions, versus transverse momentum, for Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV. For clarity, only one systematic error band is shown for Cu+Cu data (most central events), uncertainties on data in other centrality bins are similar in magnitude. Systematic errors for Au+Au data are not shown, for details see [9].
description: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3&lt;$p_{T}$&lt;10 GeV/c) from Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-$p_{T}$ and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available pp and Au+Au data, and allow the detailed exploration for the on-set of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.