cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.144180.v1/t5
title: "Figure 6" of "Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{NN}}=200$ GeV Au$+$Au collisions"

description: Lévy index parameter $\alpha$ versus average $m_T$ of the pair. Statistical and systematic uncertainties are indicated similarly to Fig. 4. The horizontal line, %\aplha$ = 1.207, represents the 0%-30% centrality average value of %\aplha$.
description: We present a detailed measurement of charged two-pion correlation functions in 0%-30% centrality $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions by the PHENIX experiment at the Relativistic Heavy Ion Collider. The data are well described by Bose-Einstein correlation functions stemming from Lévy-stable source distributions. Using a fine transverse momentum binning, we extract the correlation strength parameter $\lambda$, the Lévy index of stability $\alpha$ and the Lévy length scale parameter $R$ as a function of average transverse mass of the pair $m_{T}$. We find that the positively and the negatively charged pion pairs yield consistent results, and their correlation functions are represented, within uncertainties, by the same Lévy-stable source functions. The $\lambda$($m_{T}$) measurements indicate a decrease of the strength of the correlations at low $m_{T}$. The Lévy length scale parameter $R$($m_{T}$) decreases with increasing $m_{T}$, following a hydrodynamically predicted type of scaling behavior. The values of the Lévy index of stability $\alpha$ are found to be significantly lower than the Gaussian case of $\alpha$ = 2, but also significantly larger than the conjectured value that may characterize the critical point of a second-order quark-hadron phase transition.
DOI: 10.17182/hepdata.144180.v1/t6
title: "Figure 8" of "Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{NN}}=200$ GeV Au$+$Au collisions"

description: Inverse square of the Lévy scale parameter 1/$R^2$ versus average $m_T$ of the pair. Statistical and systematic uncertainties shown as bars and boxes, respectively.
description: We present a detailed measurement of charged two-pion correlation functions in 0%-30% centrality $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions by the PHENIX experiment at the Relativistic Heavy Ion Collider. The data are well described by Bose-Einstein correlation functions stemming from Lévy-stable source distributions. Using a fine transverse momentum binning, we extract the correlation strength parameter $\lambda$, the Lévy index of stability $\alpha$ and the Lévy length scale parameter $R$ as a function of average transverse mass of the pair $m_{T}$. We find that the positively and the negatively charged pion pairs yield consistent results, and their correlation functions are represented, within uncertainties, by the same Lévy-stable source functions. The $\lambda$($m_{T}$) measurements indicate a decrease of the strength of the correlations at low $m_{T}$. The Lévy length scale parameter $R$($m_{T}$) decreases with increasing $m_{T}$, following a hydrodynamically predicted type of scaling behavior. The values of the Lévy index of stability $\alpha$ are found to be significantly lower than the Gaussian case of $\alpha$ = 2, but also significantly larger than the conjectured value that may characterize the critical point of a second-order quark-hadron phase transition.
DOI: 10.17182/hepdata.144180.v1/t7
title: "Figure 10" of "Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{NN}}=200$ GeV Au$+$Au collisions"

description: New scale parameter $\hat{R}$ versus average $m_T$ of the pair, with a linear fit. Statistical and systematic uncertainties shown as bars and boxes, respectively.
description: We present a detailed measurement of charged two-pion correlation functions in 0%-30% centrality $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions by the PHENIX experiment at the Relativistic Heavy Ion Collider. The data are well described by Bose-Einstein correlation functions stemming from Lévy-stable source distributions. Using a fine transverse momentum binning, we extract the correlation strength parameter $\lambda$, the Lévy index of stability $\alpha$ and the Lévy length scale parameter $R$ as a function of average transverse mass of the pair $m_{T}$. We find that the positively and the negatively charged pion pairs yield consistent results, and their correlation functions are represented, within uncertainties, by the same Lévy-stable source functions. The $\lambda$($m_{T}$) measurements indicate a decrease of the strength of the correlations at low $m_{T}$. The Lévy length scale parameter $R$($m_{T}$) decreases with increasing $m_{T}$, following a hydrodynamically predicted type of scaling behavior. The values of the Lévy index of stability $\alpha$ are found to be significantly lower than the Gaussian case of $\alpha$ = 2, but also significantly larger than the conjectured value that may characterize the critical point of a second-order quark-hadron phase transition.
DOI: 10.17182/hepdata.144180.v1/t8
title: "Figure 11a" of "Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{NN}}=200$ GeV Au$+$Au collisions"

description: Normalized correlation strength parameter $\lambda/\lambda_{max}$ versus average $m_T$ of the pair. The data are compared with parameter scans from Refs. [58, 59] using different values of in-medium $\eta^{\prime}$ mass $m^{*}_{\eta^{\prime}}$ and slope parameter $B^{-1}_{\eta^{\prime}}$ . A best fit with Eq. (63) and the resulting $H$ and $\sigma$ parameters are also shown.
description: We present a detailed measurement of charged two-pion correlation functions in 0%-30% centrality $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions by the PHENIX experiment at the Relativistic Heavy Ion Collider. The data are well described by Bose-Einstein correlation functions stemming from Lévy-stable source distributions. Using a fine transverse momentum binning, we extract the correlation strength parameter $\lambda$, the Lévy index of stability $\alpha$ and the Lévy length scale parameter $R$ as a function of average transverse mass of the pair $m_{T}$. We find that the positively and the negatively charged pion pairs yield consistent results, and their correlation functions are represented, within uncertainties, by the same Lévy-stable source functions. The $\lambda$($m_{T}$) measurements indicate a decrease of the strength of the correlations at low $m_{T}$. The Lévy length scale parameter $R$($m_{T}$) decreases with increasing $m_{T}$, following a hydrodynamically predicted type of scaling behavior. The values of the Lévy index of stability $\alpha$ are found to be significantly lower than the Gaussian case of $\alpha$ = 2, but also significantly larger than the conjectured value that may characterize the critical point of a second-order quark-hadron phase transition.
DOI: 10.17182/hepdata.144180.v1/t9
title: "Figure 11b" of "Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{NN}}=200$ GeV Au$+$Au collisions"

description: Normalized correlation strength parameter $\lambda/\lambda_{max}$ versus average $m_T$ of the pair. The data are compared with parameter scans from Refs. [58, 59] using different values of in-medium $\eta^{\prime}$ mass $m^{*}_{\eta^{\prime}}$ and slope parameter $B^{-1}_{\eta^{\prime}}$ . A best fit with Eq. (63) and the resulting $H$ and $\sigma$ parameters are also shown.
description: We present a detailed measurement of charged two-pion correlation functions in 0%-30% centrality $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions by the PHENIX experiment at the Relativistic Heavy Ion Collider. The data are well described by Bose-Einstein correlation functions stemming from Lévy-stable source distributions. Using a fine transverse momentum binning, we extract the correlation strength parameter $\lambda$, the Lévy index of stability $\alpha$ and the Lévy length scale parameter $R$ as a function of average transverse mass of the pair $m_{T}$. We find that the positively and the negatively charged pion pairs yield consistent results, and their correlation functions are represented, within uncertainties, by the same Lévy-stable source functions. The $\lambda$($m_{T}$) measurements indicate a decrease of the strength of the correlations at low $m_{T}$. The Lévy length scale parameter $R$($m_{T}$) decreases with increasing $m_{T}$, following a hydrodynamically predicted type of scaling behavior. The values of the Lévy index of stability $\alpha$ are found to be significantly lower than the Gaussian case of $\alpha$ = 2, but also significantly larger than the conjectured value that may characterize the critical point of a second-order quark-hadron phase transition.
DOI: 10.17182/hepdata.144180.v1/t11
title: "Figure 11d" of "Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{NN}}=200$ GeV Au$+$Au collisions"

description: Normalized correlation strength parameter $\lambda/\lambda_{max}$ versus average $m_T$ of the pair. The data are compared with parameter scans from Refs. [58, 59] using different values of in-medium $\eta^{\prime}$ mass $m^{*}_{\eta^{\prime}}$ and slope parameter $B^{-1}_{\eta^{\prime}}$ . A best fit with Eq. (63) and the resulting $H$ and $\sigma$ parameters are also shown.
description: We present a detailed measurement of charged two-pion correlation functions in 0%-30% centrality $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions by the PHENIX experiment at the Relativistic Heavy Ion Collider. The data are well described by Bose-Einstein correlation functions stemming from Lévy-stable source distributions. Using a fine transverse momentum binning, we extract the correlation strength parameter $\lambda$, the Lévy index of stability $\alpha$ and the Lévy length scale parameter $R$ as a function of average transverse mass of the pair $m_{T}$. We find that the positively and the negatively charged pion pairs yield consistent results, and their correlation functions are represented, within uncertainties, by the same Lévy-stable source functions. The $\lambda$($m_{T}$) measurements indicate a decrease of the strength of the correlations at low $m_{T}$. The Lévy length scale parameter $R$($m_{T}$) decreases with increasing $m_{T}$, following a hydrodynamically predicted type of scaling behavior. The values of the Lévy index of stability $\alpha$ are found to be significantly lower than the Gaussian case of $\alpha$ = 2, but also significantly larger than the conjectured value that may characterize the critical point of a second-order quark-hadron phase transition.
DOI: 10.17182/hepdata.144180.v1/t12
title: "Figure 11e" of "Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{NN}}=200$ GeV Au$+$Au collisions"

description: Normalized correlation strength parameter $\lambda/\lambda_{max}$ versus average $m_T$ of the pair. The data are compared with parameter scans from Refs. [58, 59] using different values of in-medium $\eta^{\prime}$ mass $m^{*}_{\eta^{\prime}}$ and slope parameter $B^{-1}_{\eta^{\prime}}$ . A best fit with Eq. (63) and the resulting $H$ and $\sigma$ parameters are also shown.
description: We present a detailed measurement of charged two-pion correlation functions in 0%-30% centrality $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions by the PHENIX experiment at the Relativistic Heavy Ion Collider. The data are well described by Bose-Einstein correlation functions stemming from Lévy-stable source distributions. Using a fine transverse momentum binning, we extract the correlation strength parameter $\lambda$, the Lévy index of stability $\alpha$ and the Lévy length scale parameter $R$ as a function of average transverse mass of the pair $m_{T}$. We find that the positively and the negatively charged pion pairs yield consistent results, and their correlation functions are represented, within uncertainties, by the same Lévy-stable source functions. The $\lambda$($m_{T}$) measurements indicate a decrease of the strength of the correlations at low $m_{T}$. The Lévy length scale parameter $R$($m_{T}$) decreases with increasing $m_{T}$, following a hydrodynamically predicted type of scaling behavior. The values of the Lévy index of stability $\alpha$ are found to be significantly lower than the Gaussian case of $\alpha$ = 2, but also significantly larger than the conjectured value that may characterize the critical point of a second-order quark-hadron phase transition.
DOI: 10.17182/hepdata.144221.v1/t1
title: "Fig9a" of "Measurement of the $\tau$ lepton polarization in Z boson decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Fit results for the average $\tau^{-}$ lepton polarization for the 11 event categories and the combined fit as the lowest point in the figure
description: The polarization of $\tau^{-}$ leptons is measured using leptonic and hadronic $\tau^{-}$ lepton decays in $Z\rightarrow \tau^{+}\tau^{-}$ events in proton-proton collisions at $\sqrt{s}=13\,\mathrm{TeV}$ recorded by CMS at the CERN LHC with an integrated luminosity of $36.3\,\mathrm{fb}^{-1}$.The measured $\tau^{-}$ polarization at the $\mathrm{Z}$ boson mass pole is $\mathcal{P}_{\tau}(\mathrm{Z})=-0.144\pm0.006\,(\text{stat})\,\pm0.014\,(\text{syst})=-0.144\pm0.015$,in good agreement with the measurement of the $\tau$ lepton asymmetry parameter of $A_{\tau}=0.1439\pm0.0043=-\mathcal{P}_{\tau}(\mathrm{Z})$ at LEP.The $\tau$ polarization depends on the ratio of the vector to axial-vector couplings of the $\tau$ leptons in the neutral current expression, and thus on the effective weak mixing angle $ \sin^{2}\theta_{\mathrm{W}}^{\mathrm{eff}}$, independently of the $\mathrm{Z}$ boson production mechanism.The obtained value $ \sin^{2}\theta_{\mathrm{W}}^{\mathrm{eff}}=0.2319\pm0.0008\,(\text{stat})\pm0.0018\,(\text{syst})=0.2319\pm0.0019$is in good agreement with measurements at $\mathrm{e^{+}e^{-}}$ colliders.
DOI: 10.17182/hepdata.144221.v1/t2
title: "Fig9b" of "Measurement of the $\tau$ lepton polarization in Z boson decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Fit results for the average $\tau^{-}$ lepton polarization for categories grouped into 4 channels.
description: The polarization of $\tau^{-}$ leptons is measured using leptonic and hadronic $\tau^{-}$ lepton decays in $Z\rightarrow \tau^{+}\tau^{-}$ events in proton-proton collisions at $\sqrt{s}=13\,\mathrm{TeV}$ recorded by CMS at the CERN LHC with an integrated luminosity of $36.3\,\mathrm{fb}^{-1}$.The measured $\tau^{-}$ polarization at the $\mathrm{Z}$ boson mass pole is $\mathcal{P}_{\tau}(\mathrm{Z})=-0.144\pm0.006\,(\text{stat})\,\pm0.014\,(\text{syst})=-0.144\pm0.015$,in good agreement with the measurement of the $\tau$ lepton asymmetry parameter of $A_{\tau}=0.1439\pm0.0043=-\mathcal{P}_{\tau}(\mathrm{Z})$ at LEP.The $\tau$ polarization depends on the ratio of the vector to axial-vector couplings of the $\tau$ leptons in the neutral current expression, and thus on the effective weak mixing angle $ \sin^{2}\theta_{\mathrm{W}}^{\mathrm{eff}}$, independently of the $\mathrm{Z}$ boson production mechanism.The obtained value $ \sin^{2}\theta_{\mathrm{W}}^{\mathrm{eff}}=0.2319\pm0.0008\,(\text{stat})\pm0.0018\,(\text{syst})=0.2319\pm0.0019$is in good agreement with measurements at $\mathrm{e^{+}e^{-}}$ colliders.
DOI: 10.17182/hepdata.144221.v1/t3
title: "Fig10" of "Measurement of the $\tau$ lepton polarization in Z boson decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: A comparison of the $\tau$ lepton asymmetry, $A_{\tau}$ measured from the tau lepton polarization in this paper and other measurements.
description: The polarization of $\tau^{-}$ leptons is measured using leptonic and hadronic $\tau^{-}$ lepton decays in $Z\rightarrow \tau^{+}\tau^{-}$ events in proton-proton collisions at $\sqrt{s}=13\,\mathrm{TeV}$ recorded by CMS at the CERN LHC with an integrated luminosity of $36.3\,\mathrm{fb}^{-1}$.The measured $\tau^{-}$ polarization at the $\mathrm{Z}$ boson mass pole is $\mathcal{P}_{\tau}(\mathrm{Z})=-0.144\pm0.006\,(\text{stat})\,\pm0.014\,(\text{syst})=-0.144\pm0.015$,in good agreement with the measurement of the $\tau$ lepton asymmetry parameter of $A_{\tau}=0.1439\pm0.0043=-\mathcal{P}_{\tau}(\mathrm{Z})$ at LEP.The $\tau$ polarization depends on the ratio of the vector to axial-vector couplings of the $\tau$ leptons in the neutral current expression, and thus on the effective weak mixing angle $ \sin^{2}\theta_{\mathrm{W}}^{\mathrm{eff}}$, independently of the $\mathrm{Z}$ boson production mechanism.The obtained value $ \sin^{2}\theta_{\mathrm{W}}^{\mathrm{eff}}=0.2319\pm0.0008\,(\text{stat})\pm0.0018\,(\text{syst})=0.2319\pm0.0019$is in good agreement with measurements at $\mathrm{e^{+}e^{-}}$ colliders.
DOI: 10.17182/hepdata.144239.v1/t1
title: "Table 2" of "Forward $J/\psi$ production in U$+$U collisions at $\sqrt{s_{NN}}$=193 GeV"

description: Centrality parameters $N_{part}$ and $N_{coll}$ in U+U and Au+Au collisions, estimated using the Glauber model.
description: The invariant yields for $J/\psi$ production at forward rapidity (1.2 &lt; $|y|$ &lt; 2.2) in U+U collisions at $\sqrt{s_{NN}}$ = 193 GeV have been measured as a function of collision centrality. The invariant yields and nuclear-modification factor $R_{AA}$ are presented and compared with those from Au+Au collisions in the same rapidity range. Additionally, the direct ratio of the invariant yields from U+U and Au+Au collisions within the same centrality class is presented, and used to investigate the role of $c\bar{c}$ coalescence. Two different parameterizations of the deformed Woods-Saxon distribution were used in Glauber calculations to determine the values of the number of nucleon-nucleon collisions in each centrality class, $N_{coll}$, and these were found to give significantly different $N_{coll}$ values. Results using $N_{coll}$ values from both deformed Woods-Saxon distributions are presented. The measured ratios show that the $J/\psi$ suppression, relative to binary collision scaling, is similar in U+U and Au+Au for peripheral and midcentral collisions, but that $J/\psi$ show less suppression for the most central U+U collisions. The results are consistent with a picture in which, for central collisions, increase in the $J/\psi$ yield due to $c\bar{c}$ coalescence becomes more important than the decrease in yield due to increased energy density. For midcentral collisions, the conclusions about the balance between $c\bar{c}$ coalescence and suppression depend on which deformed Woods-Saxon distribution is used to determine $N_{coll}$.
DOI: 10.17182/hepdata.144239.v1/t2
title: "Figure 6" of "Forward $J/\psi$ production in U$+$U collisions at $\sqrt{s_{NN}}$=193 GeV"

description: The nuclear-modification factor, $R_{AA}$, measured as a function of collision centrality ($N_{part}$) for $J/\psi$ at forward rapidity in U+U collisions at $\sqrt{s_{NN}}$ = 193 GeV.
description: The invariant yields for $J/\psi$ production at forward rapidity (1.2 &lt; $|y|$ &lt; 2.2) in U+U collisions at $\sqrt{s_{NN}}$ = 193 GeV have been measured as a function of collision centrality. The invariant yields and nuclear-modification factor $R_{AA}$ are presented and compared with those from Au+Au collisions in the same rapidity range. Additionally, the direct ratio of the invariant yields from U+U and Au+Au collisions within the same centrality class is presented, and used to investigate the role of $c\bar{c}$ coalescence. Two different parameterizations of the deformed Woods-Saxon distribution were used in Glauber calculations to determine the values of the number of nucleon-nucleon collisions in each centrality class, $N_{coll}$, and these were found to give significantly different $N_{coll}$ values. Results using $N_{coll}$ values from both deformed Woods-Saxon distributions are presented. The measured ratios show that the $J/\psi$ suppression, relative to binary collision scaling, is similar in U+U and Au+Au for peripheral and midcentral collisions, but that $J/\psi$ show less suppression for the most central U+U collisions. The results are consistent with a picture in which, for central collisions, increase in the $J/\psi$ yield due to $c\bar{c}$ coalescence becomes more important than the decrease in yield due to increased energy density. For midcentral collisions, the conclusions about the balance between $c\bar{c}$ coalescence and suppression depend on which deformed Woods-Saxon distribution is used to determine $N_{coll}$.
DOI: 10.17182/hepdata.144239.v1/t3
title: "Figure 7" of "Forward $J/\psi$ production in U$+$U collisions at $\sqrt{s_{NN}}$=193 GeV"

description: Invariant yield measured as a function of collision centrality for $J/\psi$ at forward rapidity for U+U and Au+Au collisions.
description: The invariant yields for $J/\psi$ production at forward rapidity (1.2 &lt; $|y|$ &lt; 2.2) in U+U collisions at $\sqrt{s_{NN}}$ = 193 GeV have been measured as a function of collision centrality. The invariant yields and nuclear-modification factor $R_{AA}$ are presented and compared with those from Au+Au collisions in the same rapidity range. Additionally, the direct ratio of the invariant yields from U+U and Au+Au collisions within the same centrality class is presented, and used to investigate the role of $c\bar{c}$ coalescence. Two different parameterizations of the deformed Woods-Saxon distribution were used in Glauber calculations to determine the values of the number of nucleon-nucleon collisions in each centrality class, $N_{coll}$, and these were found to give significantly different $N_{coll}$ values. Results using $N_{coll}$ values from both deformed Woods-Saxon distributions are presented. The measured ratios show that the $J/\psi$ suppression, relative to binary collision scaling, is similar in U+U and Au+Au for peripheral and midcentral collisions, but that $J/\psi$ show less suppression for the most central U+U collisions. The results are consistent with a picture in which, for central collisions, increase in the $J/\psi$ yield due to $c\bar{c}$ coalescence becomes more important than the decrease in yield due to increased energy density. For midcentral collisions, the conclusions about the balance between $c\bar{c}$ coalescence and suppression depend on which deformed Woods-Saxon distribution is used to determine $N_{coll}$.
DOI: 10.17182/hepdata.144239.v1/t4
title: "Figure 8" of "Forward $J/\psi$ production in U$+$U collisions at $\sqrt{s_{NN}}$=193 GeV"

description: The relative nuclear-modification factor for U+U and Au+Au as a function of collision centrality.
description: The invariant yields for $J/\psi$ production at forward rapidity (1.2 &lt; $|y|$ &lt; 2.2) in U+U collisions at $\sqrt{s_{NN}}$ = 193 GeV have been measured as a function of collision centrality. The invariant yields and nuclear-modification factor $R_{AA}$ are presented and compared with those from Au+Au collisions in the same rapidity range. Additionally, the direct ratio of the invariant yields from U+U and Au+Au collisions within the same centrality class is presented, and used to investigate the role of $c\bar{c}$ coalescence. Two different parameterizations of the deformed Woods-Saxon distribution were used in Glauber calculations to determine the values of the number of nucleon-nucleon collisions in each centrality class, $N_{coll}$, and these were found to give significantly different $N_{coll}$ values. Results using $N_{coll}$ values from both deformed Woods-Saxon distributions are presented. The measured ratios show that the $J/\psi$ suppression, relative to binary collision scaling, is similar in U+U and Au+Au for peripheral and midcentral collisions, but that $J/\psi$ show less suppression for the most central U+U collisions. The results are consistent with a picture in which, for central collisions, increase in the $J/\psi$ yield due to $c\bar{c}$ coalescence becomes more important than the decrease in yield due to increased energy density. For midcentral collisions, the conclusions about the balance between $c\bar{c}$ coalescence and suppression depend on which deformed Woods-Saxon distribution is used to determine $N_{coll}$.