cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.143606.v1/t22
title: "Figure 24b-2" of "Systematic Studies of Elliptic Flow Measurements in Au+Au Collisions at sqrt(s_NN) = 200 GeV"

description: The PHENIX $v_2${BBC} and $v_2${ZDC-SMD} from the modified event-plane method for charged hadrons as a function of $p_T$ in different centralities.
description: We present inclusive charged hadron elliptic flow ($v_2$) measured over the pseudorapidity range $|\eta|$ &lt; 0.35 in Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. Results for $v_2$ are presented over a broad range of transverse momentum ($p_{T}$ = 0.2-8.0 GeV/$c$) and centrality (0-60%). To study nonflow effects that are correlations other than collective flow, as well as the fluctuations of $v_2$, we compare two different analysis methods: (1) the event-plane method from two independent subdetectors at forward ($|\eta|$ = 3.1–3.9) and beam ($|\eta|$ &gt; 6.5) pseudorapidities and (2) the two-particle cumulant method extracted using correlations between particles detected at midrapidity. The two event-plane results are consistent within systematic uncertainties over the measured $p_T$ and in centrality 0–40%. There is at most a 20% difference in the $v_2$ between the two event-plane methods in peripheral (40–60%) collisions. The comparisons between the two-particle cumulant results and the standard event-plane measurements are discussed.
DOI: 10.17182/hepdata.143606.v1/t23
title: "Figure 24b-3" of "Systematic Studies of Elliptic Flow Measurements in Au+Au Collisions at sqrt(s_NN) = 200 GeV"

description: The PHENIX $v_2${BBC} and $v_2${ZDC-SMD} from the modified event-plane method for charged hadrons as a function of $p_T$ in different centralities.
description: We present inclusive charged hadron elliptic flow ($v_2$) measured over the pseudorapidity range $|\eta|$ &lt; 0.35 in Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. Results for $v_2$ are presented over a broad range of transverse momentum ($p_{T}$ = 0.2-8.0 GeV/$c$) and centrality (0-60%). To study nonflow effects that are correlations other than collective flow, as well as the fluctuations of $v_2$, we compare two different analysis methods: (1) the event-plane method from two independent subdetectors at forward ($|\eta|$ = 3.1–3.9) and beam ($|\eta|$ &gt; 6.5) pseudorapidities and (2) the two-particle cumulant method extracted using correlations between particles detected at midrapidity. The two event-plane results are consistent within systematic uncertainties over the measured $p_T$ and in centrality 0–40%. There is at most a 20% difference in the $v_2$ between the two event-plane methods in peripheral (40–60%) collisions. The comparisons between the two-particle cumulant results and the standard event-plane measurements are discussed.
DOI: 10.17182/hepdata.143610.v1/t1
title: "Figure 4a" of "Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: Weighted mean of corrected NBD $k$, $$ as a function of pseudorapidity window size. The dominant sources systematic correlate with dead maps (corr.sys.(dead)) and two-track seperation cuts (corr.sys.(fake)). The total systematic error (uncorr.sys.) is the quadratic sum over all errors.
description: Longitudinal density correlations of produced matter in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity window sizes. The extracted $\alpha\xi$ parameter, related to the susceptibility of the density fluctuations in the long wavelength limit, exhibits a non-monotonic behavior as a function of the number of participant nucleons, $N_{part}$. A local maximum is seen at $N_{part}$ ~ 90, with corresponding energy density based on the Bjorken picture of $\epsilon_{B_j}\tau$ ~ 2.4 GeV/($fm^2$ $c$) with a transverse area size of 60 $fm^2$. This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework.
DOI: 10.17182/hepdata.143610.v1/t2
title: "Figure 4b" of "Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: Weighted mean of corrected NBD $k$, $$ as a function of pseudorapidity window size. The dominant sources systematic correlate with dead maps (corr.sys.(dead)) and two-track seperation cuts (corr.sys.(fake)). The total systematic error (uncorr.sys.) is the quadratic sum over all errors.
description: Longitudinal density correlations of produced matter in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity window sizes. The extracted $\alpha\xi$ parameter, related to the susceptibility of the density fluctuations in the long wavelength limit, exhibits a non-monotonic behavior as a function of the number of participant nucleons, $N_{part}$. A local maximum is seen at $N_{part}$ ~ 90, with corresponding energy density based on the Bjorken picture of $\epsilon_{B_j}\tau$ ~ 2.4 GeV/($fm^2$ $c$) with a transverse area size of 60 $fm^2$. This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework.
DOI: 10.17182/hepdata.143610.v1/t3
title: "Figure 5a" of "Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: Fit results based on $k(\delta_{\eta})$=$1/{{2\alpha\xi}/{\delta_{\eta}}}$ ($\xi &lt;&lt; \delta_{\eta}$).
description: Longitudinal density correlations of produced matter in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity window sizes. The extracted $\alpha\xi$ parameter, related to the susceptibility of the density fluctuations in the long wavelength limit, exhibits a non-monotonic behavior as a function of the number of participant nucleons, $N_{part}$. A local maximum is seen at $N_{part}$ ~ 90, with corresponding energy density based on the Bjorken picture of $\epsilon_{B_j}\tau$ ~ 2.4 GeV/($fm^2$ $c$) with a transverse area size of 60 $fm^2$. This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework.
DOI: 10.17182/hepdata.143610.v1/t4
title: "Figure 5b" of "Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at sqrt(s_NN)=200 GeV"

description: Fit results based on $k(\delta_{\eta})$=$1/{{2\alpha\xi}/{\delta_{\eta}}}$ ($\xi &lt;&lt; \delta_{\eta}$).
description: Longitudinal density correlations of produced matter in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity window sizes. The extracted $\alpha\xi$ parameter, related to the susceptibility of the density fluctuations in the long wavelength limit, exhibits a non-monotonic behavior as a function of the number of participant nucleons, $N_{part}$. A local maximum is seen at $N_{part}$ ~ 90, with corresponding energy density based on the Bjorken picture of $\epsilon_{B_j}\tau$ ~ 2.4 GeV/($fm^2$ $c$) with a transverse area size of 60 $fm^2$. This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework.
DOI: 10.17182/hepdata.143611.v1/t1
title: "Table 1" of "Evidence of pair production of longitudinally polarised vector bosons and study of CP properties in $ZZ \to 4\ell$ events with the ATLAS detector at $\sqrt{s} = 13$ TeV"

description: Unfolded differential cross-section as a function of the Optimal Observable $\mathcal{O}_{T_{yz,1} T_{yz,3}}$
description: A study of the polarisation and CP properties in $ZZ$ production is presented. The used data set corresponds to an integrated luminosity of $140$ fb$^{-1}$ of proton–proton collisions at a centre-of-mass energy of $13$ TeV recorded by the ATLAS detector at the Large Hadron Collider. The $ZZ$ candidate events are reconstructed using two same-flavour opposite-charge electron or muon pairs. The production of two longitudinally polarised $Z$ bosons is measured with a significance of $4.3$ standard deviations, and its cross-section is measured in a fiducial phase space to be $2.45 \pm 0.60$ fb, consistent with the next-to-leading order Standard Model prediction of $2.10 \pm 0.09$ fb. The differential cross-section of the inclusive $ZZ$ production as a function of a CP-sensitive angular observable is also measured. The results are used to constrain anomalous CP-odd neutral triple gauge couplings.
DOI: 10.17182/hepdata.143616.v1/t1
title: "Table 1a" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: Additional information containing number of events which were used to reconstruct the numvers matching to Figure 1 and 2.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t2
title: "Table 1b" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: Additional information containing number of events which were used to reconstruct the numvers matching to Figure 1 and 2.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t3
title: "Table 1c" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: Additional information containing number of events which were used to reconstruct the numvers matching to Figure 1 and 2.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t4
title: "Table 1d" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: Additional information containing number of events which were used to reconstruct the numvers matching to Figure 1 and 2.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t5
title: "Table 1e" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: Additional information containing number of events which were used to reconstruct the numvers matching to Figure 1 and 2.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t6
title: "Table 1f" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: Additional information containing number of events which were used to reconstruct the numvers matching to Figure 1 and 2.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t7
title: "Figure 1a-1" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: The uncorrected multiplicity distributions of charged hadrons with 0.2 &lt; $p_T$ &lt; 2.0 GeV/$c$ for 200 GeV Au+Au collisions.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t8
title: "Figure 1a-2" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: The uncorrected multiplicity distributions of charged hadrons with 0.2 &lt; $p_T$ &lt; 2.0 GeV/$c$ for 200 GeV Au+Au collisions.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t10
title: "Figure 1a-4" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: The uncorrected multiplicity distributions of charged hadrons with 0.2 &lt; $p_T$ &lt; 2.0 GeV/$c$ for 200 GeV Au+Au collisions.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t11
title: "Figure 1a-5" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: The uncorrected multiplicity distributions of charged hadrons with 0.2 &lt; $p_T$ &lt; 2.0 GeV/$c$ for 200 GeV Au+Au collisions.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.
DOI: 10.17182/hepdata.143616.v1/t12
title: "Figure 1a-6" of "Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV"

description: The uncorrected multiplicity distributions of charged hadrons with 0.2 &lt; $p_T$ &lt; 2.0 GeV/$c$ for 200 GeV Au+Au collisions.
description: A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV, and Cu+Cu collisions $\sqrt{s_{NN}}$ = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon $p$+$p$ data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.