cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.66180.v1/t34
title: "Table 34" of "Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at sqrt(s_NN)=2.76 TeV with the ATLAS detector"

description: The transverse momentum, $p_{T}$, dependence of the TKT track reconstruction efficiency for $\pi^{\pm}$, $K^{\pm}$ and $p^{\pm}$ in the pseudorapidity range $|\eta| &lt; 1$ for 40-50% centrality interval.
description: CERN-LHC. The integrated elliptic flow of charged particles produced in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter, $v_{2}$, was measured in the pseudorapidity range $|\eta| \leq 2.5$ with the event-plane method. In order to include tracks with very low transverse momentum $p_{T}$, thus reducing the uncertainty in $v_{2}$ integrated over $p_{T}$, a 1$\mu b^{-1}$ data sample recorded without a magnetic field in the tracking detectors is used. The centrality dependence of the integrated $v_{2}$ is compared to other measurements obtained with higher $p_{T}$ thresholds. The integrated $v_{2}$ transformed to the rest frame of one of the colliding nuclei is compared to the lower-energy RHIC data.
For more details see the paper.
DOI: 10.17182/hepdata.66180.v1/t35
title: "Table 35" of "Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at sqrt(s_NN)=2.76 TeV with the ATLAS detector"

description: The transverse momentum, $p_{T}$, dependence of the TKT track reconstruction efficiency for $\pi^{\pm}$, $K^{\pm}$ and $p^{\pm}$ in the pseudorapidity range $|\eta| &lt; 1$ for 70-80% centrality interval.
description: CERN-LHC. The integrated elliptic flow of charged particles produced in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter, $v_{2}$, was measured in the pseudorapidity range $|\eta| \leq 2.5$ with the event-plane method. In order to include tracks with very low transverse momentum $p_{T}$, thus reducing the uncertainty in $v_{2}$ integrated over $p_{T}$, a 1$\mu b^{-1}$ data sample recorded without a magnetic field in the tracking detectors is used. The centrality dependence of the integrated $v_{2}$ is compared to other measurements obtained with higher $p_{T}$ thresholds. The integrated $v_{2}$ transformed to the rest frame of one of the colliding nuclei is compared to the lower-energy RHIC data.
For more details see the paper.
DOI: 10.17182/hepdata.66180.v1/t36
title: "Table 36" of "Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at sqrt(s_NN)=2.76 TeV with the ATLAS detector"

description: The transverse momentum, $p_{T}$, dependence of the PXT track reconstruction efficiency for $\pi^{\pm}$, $K^{\pm}$ and $p^{\pm}$ in the pseudorapidity range $|\eta| &lt; 1$ for 0-10% centrality interval.
description: CERN-LHC. The integrated elliptic flow of charged particles produced in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter, $v_{2}$, was measured in the pseudorapidity range $|\eta| \leq 2.5$ with the event-plane method. In order to include tracks with very low transverse momentum $p_{T}$, thus reducing the uncertainty in $v_{2}$ integrated over $p_{T}$, a 1$\mu b^{-1}$ data sample recorded without a magnetic field in the tracking detectors is used. The centrality dependence of the integrated $v_{2}$ is compared to other measurements obtained with higher $p_{T}$ thresholds. The integrated $v_{2}$ transformed to the rest frame of one of the colliding nuclei is compared to the lower-energy RHIC data.
For more details see the paper.
DOI: 10.17182/hepdata.66180.v1/t37
title: "Table 37" of "Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at sqrt(s_NN)=2.76 TeV with the ATLAS detector"

description: The transverse momentum, $p_{T}$, dependence of the PXT track reconstruction efficiency for $\pi^{\pm}$, $K^{\pm}$ and $p^{\pm}$ in the pseudorapidity range $|\eta| &lt; 1$ for 40-50% centrality interval.
description: CERN-LHC. The integrated elliptic flow of charged particles produced in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter, $v_{2}$, was measured in the pseudorapidity range $|\eta| \leq 2.5$ with the event-plane method. In order to include tracks with very low transverse momentum $p_{T}$, thus reducing the uncertainty in $v_{2}$ integrated over $p_{T}$, a 1$\mu b^{-1}$ data sample recorded without a magnetic field in the tracking detectors is used. The centrality dependence of the integrated $v_{2}$ is compared to other measurements obtained with higher $p_{T}$ thresholds. The integrated $v_{2}$ transformed to the rest frame of one of the colliding nuclei is compared to the lower-energy RHIC data.
For more details see the paper.
DOI: 10.17182/hepdata.66180.v1/t38
title: "Table 38" of "Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at sqrt(s_NN)=2.76 TeV with the ATLAS detector"

description: The transverse momentum, $p_{T}$, dependence of the PXT track reconstruction efficiency for $\pi^{\pm}$, $K^{\pm}$ and $p^{\pm}$ in the pseudorapidity range $|\eta| &lt; 1$ for 70-80% centrality interval.
description: CERN-LHC. The integrated elliptic flow of charged particles produced in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter, $v_{2}$, was measured in the pseudorapidity range $|\eta| \leq 2.5$ with the event-plane method. In order to include tracks with very low transverse momentum $p_{T}$, thus reducing the uncertainty in $v_{2}$ integrated over $p_{T}$, a 1$\mu b^{-1}$ data sample recorded without a magnetic field in the tracking detectors is used. The centrality dependence of the integrated $v_{2}$ is compared to other measurements obtained with higher $p_{T}$ thresholds. The integrated $v_{2}$ transformed to the rest frame of one of the colliding nuclei is compared to the lower-energy RHIC data.
For more details see the paper.
DOI: 10.17182/hepdata.66229.v1/t1
title: "Table 1" of "Single \pi^- production in np collisions for excess energies up to 90 MeV"

description: Differential cross sections in $\mu b/sr$ for the angular distributions of the relative proton momentum at six excess energies Q.
description: COSY. The quasifree reaction $ np \rightarrow pp \pi^-$ was studied in a kinematically complete experiment by bombarding a liquid hydrogen target with a deuteron beam of momentum 1.85 GeV/c and analyzing the data along the lines of the spectator model. In addition to the three charged ejectiles the spectator proton was also detected in the large-acceptance time-of-flight spectrometer COSY-TOF. It was identified by its momentum and flight direction thus yielding access to the Fermi motion of the bound neutron and to the effective neutron 4-momentum vector $\mathbb{P}_n$ which differed from event to event. A range of almost 90 MeV excess energy above threshold was covered. Energy dependent angular distributions, invariant mass spectra as well as fully covered Dalitz plots were deduced. Sizeable $pp$ FSI effects were found as were contributions of $p$ and $d$ partial waves. The behavior of the elementary cross section $\sigma_{01}$ close to threshold is discussed in view of new cross section data. In comparison with existing literature data the results provide a sensitive test of the spectator model.
DOI: 10.17182/hepdata.66229.v1/t2
title: "Table 2" of "Single \pi^- production in np collisions for excess energies up to 90 MeV"

description: Expansion coefficients of the Legendre polynomial fits to the angular distributions of the relative proton momentum.
description: COSY. The quasifree reaction $ np \rightarrow pp \pi^-$ was studied in a kinematically complete experiment by bombarding a liquid hydrogen target with a deuteron beam of momentum 1.85 GeV/c and analyzing the data along the lines of the spectator model. In addition to the three charged ejectiles the spectator proton was also detected in the large-acceptance time-of-flight spectrometer COSY-TOF. It was identified by its momentum and flight direction thus yielding access to the Fermi motion of the bound neutron and to the effective neutron 4-momentum vector $\mathbb{P}_n$ which differed from event to event. A range of almost 90 MeV excess energy above threshold was covered. Energy dependent angular distributions, invariant mass spectra as well as fully covered Dalitz plots were deduced. Sizeable $pp$ FSI effects were found as were contributions of $p$ and $d$ partial waves. The behavior of the elementary cross section $\sigma_{01}$ close to threshold is discussed in view of new cross section data. In comparison with existing literature data the results provide a sensitive test of the spectator model.
DOI: 10.17182/hepdata.66229.v1/t3
title: "Table 3" of "Single \pi^- production in np collisions for excess energies up to 90 MeV"

description: Differential cross sections in $\mu b/sr$ for the angular distributions of the pion angular momentum at six excess energies Q.
description: COSY. The quasifree reaction $ np \rightarrow pp \pi^-$ was studied in a kinematically complete experiment by bombarding a liquid hydrogen target with a deuteron beam of momentum 1.85 GeV/c and analyzing the data along the lines of the spectator model. In addition to the three charged ejectiles the spectator proton was also detected in the large-acceptance time-of-flight spectrometer COSY-TOF. It was identified by its momentum and flight direction thus yielding access to the Fermi motion of the bound neutron and to the effective neutron 4-momentum vector $\mathbb{P}_n$ which differed from event to event. A range of almost 90 MeV excess energy above threshold was covered. Energy dependent angular distributions, invariant mass spectra as well as fully covered Dalitz plots were deduced. Sizeable $pp$ FSI effects were found as were contributions of $p$ and $d$ partial waves. The behavior of the elementary cross section $\sigma_{01}$ close to threshold is discussed in view of new cross section data. In comparison with existing literature data the results provide a sensitive test of the spectator model.
DOI: 10.17182/hepdata.66229.v1/t4
title: "Table 4" of "Single \pi^- production in np collisions for excess energies up to 90 MeV"

description: Expansion coefficients of the Legendre polynomial fits to the $\pi$ angular distributions.
description: COSY. The quasifree reaction $ np \rightarrow pp \pi^-$ was studied in a kinematically complete experiment by bombarding a liquid hydrogen target with a deuteron beam of momentum 1.85 GeV/c and analyzing the data along the lines of the spectator model. In addition to the three charged ejectiles the spectator proton was also detected in the large-acceptance time-of-flight spectrometer COSY-TOF. It was identified by its momentum and flight direction thus yielding access to the Fermi motion of the bound neutron and to the effective neutron 4-momentum vector $\mathbb{P}_n$ which differed from event to event. A range of almost 90 MeV excess energy above threshold was covered. Energy dependent angular distributions, invariant mass spectra as well as fully covered Dalitz plots were deduced. Sizeable $pp$ FSI effects were found as were contributions of $p$ and $d$ partial waves. The behavior of the elementary cross section $\sigma_{01}$ close to threshold is discussed in view of new cross section data. In comparison with existing literature data the results provide a sensitive test of the spectator model.
DOI: 10.17182/hepdata.66230.v1/t1
title: "Table 1" of "Measurement of the virtual-photon asymmetry A2 and the spin-structure function g2 of the proton"

description: The spin-structure function $xg_2(x,Q^2)$ and virtual-photon asymmetry $A_2(x,Q^2)$ of the proton in bins of $(x,Q^2)$, see text for details. Statistical and systematic uncertainties are presented separately.
description: A measurement of the virtual-photon asymmetry A_2(x,Q^2) and of the spin-structure function g_2(x,Q^2) of the proton are presented for the kinematic range 0.004 &lt; x &lt; 0.9 and 0.18 GeV^2 &lt; Q^2 &lt; 20 GeV^2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target.
DOI: 10.17182/hepdata.66230.v1/t2
title: "Table 2" of "Measurement of the virtual-photon asymmetry A2 and the spin-structure function g2 of the proton"

description: The spin-structure function $xg_2$ and the virtual-photon asymmetry $A_2$ of the proton after evolving to common $Q^2$ and averaging over in each $x$-bin (see text for details). Statistical and systematic uncertainties are presented separately.
description: A measurement of the virtual-photon asymmetry A_2(x,Q^2) and of the spin-structure function g_2(x,Q^2) of the proton are presented for the kinematic range 0.004 &lt; x &lt; 0.9 and 0.18 GeV^2 &lt; Q^2 &lt; 20 GeV^2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target.
DOI: 10.17182/hepdata.66230.v1/t3
title: "Table 3" of "Measurement of the virtual-photon asymmetry A2 and the spin-structure function g2 of the proton"

description: Correlation matrix for $xg_2$ in 9 $x$-bins (as in Table 2).
description: A measurement of the virtual-photon asymmetry A_2(x,Q^2) and of the spin-structure function g_2(x,Q^2) of the proton are presented for the kinematic range 0.004 &lt; x &lt; 0.9 and 0.18 GeV^2 &lt; Q^2 &lt; 20 GeV^2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target.
DOI: 10.17182/hepdata.66230.v1/t4
title: "Table 4" of "Measurement of the virtual-photon asymmetry A2 and the spin-structure function g2 of the proton"

description: Correlation matrix for $xg_2$ in 23 $x$-bins.
description: A measurement of the virtual-photon asymmetry A_2(x,Q^2) and of the spin-structure function g_2(x,Q^2) of the proton are presented for the kinematic range 0.004 &lt; x &lt; 0.9 and 0.18 GeV^2 &lt; Q^2 &lt; 20 GeV^2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target.
DOI: 10.17182/hepdata.66239.v1/t1
title: "Table 1" of "Measurement of the relative rate of prompt $\chi_{c0}$, $\chi_{c1}$ and $\chi_{c2}$ production at $\sqrt{s}=7$TeV"

description: Measurements of the ratio of $\chi_{c2}$ to $\chi_{c1}$ production cross-sections for the given $J/\psi$ $p_T$ range assuming unpolarized $\chi_c$ production. The first uncertainty is statistical, the second is systematic, the third is from the branching fractions used and the last gives the maximum correction due to the unknown polarization.
description: CERN-LHC. Prompt production of charmonium $\chi_{c0}$, $\chi_{c1}$ and $\chi_{c1}$ mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of 7 TeV. The $\chi_{c}$ mesons are identified through their decay to $J/\psi$ $\gamma$, with $J/\psi \rightarrow \mu^+ \mu^-$ using photons that converted in the detector. A data sample, corresponding to an integrated luminosity of 1.0 fb-1 collected by the LHCb detector, is used to measure the relative prompt production rate of $\chi_{c1}$ and $\chi_{c2}$ in the rapidity range 2.0 &lt; y &lt; 4.5 as a function of the Jpsi transverse momentum from 3 to 20 GeV/c. First evidence for $\chi_{c0}$ meson production at a high-energy hadron collider is also presented.
DOI: 10.17182/hepdata.66239.v1/t2
title: "Table 2" of "Measurement of the relative rate of prompt $\chi_{c0}$, $\chi_{c1}$ and $\chi_{c2}$ production at $\sqrt{s}=7$TeV"

description: Ratio of $\chi_{c0}$ to $\chi_{c2}$ in the observed $J/\psi$\ $p_T$ range from 4-20 GeV. Also given is the $\chi_{c2}$ to $\chi_{c1}$ ratio in the same PT range for comparison. The first systematic error is dominated by the photon efficiency,the $\chi_{c1}$ tail parameters and background modelling, the third from the choiceof $p_T$ spectrum and the fourth from the branching fraction uncertainty.
description: CERN-LHC. Prompt production of charmonium $\chi_{c0}$, $\chi_{c1}$ and $\chi_{c1}$ mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of 7 TeV. The $\chi_{c}$ mesons are identified through their decay to $J/\psi$ $\gamma$, with $J/\psi \rightarrow \mu^+ \mu^-$ using photons that converted in the detector. A data sample, corresponding to an integrated luminosity of 1.0 fb-1 collected by the LHCb detector, is used to measure the relative prompt production rate of $\chi_{c1}$ and $\chi_{c2}$ in the rapidity range 2.0 &lt; y &lt; 4.5 as a function of the Jpsi transverse momentum from 3 to 20 GeV/c. First evidence for $\chi_{c0}$ meson production at a high-energy hadron collider is also presented.
DOI: 10.17182/hepdata.66242.v1/t1
title: "Table 1" of "Measurement of $J/\psi$ polarization in $pp$ collisions at $\sqrt{s}=7$ TeV"

description: Measured $J/\psi$ polarization parameters in bins of $p_T$ and $y$ in the helicity frame. The first uncertainty is statistical (from the fit and the background subtraction) while the second is the systematic uncertainty.
description: CERN-LHC. An angular analysis of the decay $J/\psi \rightarrow \mu^+ \mu^-$ is performed to measure the polarization of prompt $J/\psi$ mesons produced in pp collisions at $\sqrt{s}$=7 TeV. The dataset corresponds to an integrated luminosity of 0.37 fb-1 collected with the LHCb detector. The measurement is presented as a function of transverse momentum, $p_T$, and rapidity, $y$, of the $J/\psi$ meson, in the kinematic region 2 &lt; $p_T$ &lt; 15 GeV/c and 2.0 &lt; $y$ &lt; 4.5.
DOI: 10.17182/hepdata.66242.v1/t2
title: "Table 2" of "Measurement of $J/\psi$ polarization in $pp$ collisions at $\sqrt{s}=7$ TeV"

description: Measured $J/\psi$ polarization parameters in bins of $p_T$ and $y$ in Collins-Soper frame. The first uncertainty is statistical (from the fit and the background subtraction) while the second is the systematic uncertainty.
description: CERN-LHC. An angular analysis of the decay $J/\psi \rightarrow \mu^+ \mu^-$ is performed to measure the polarization of prompt $J/\psi$ mesons produced in pp collisions at $\sqrt{s}$=7 TeV. The dataset corresponds to an integrated luminosity of 0.37 fb-1 collected with the LHCb detector. The measurement is presented as a function of transverse momentum, $p_T$, and rapidity, $y$, of the $J/\psi$ meson, in the kinematic region 2 &lt; $p_T$ &lt; 15 GeV/c and 2.0 &lt; $y$ &lt; 4.5.
DOI: 10.17182/hepdata.66242.v1/t3
title: "Table 3" of "Measurement of $J/\psi$ polarization in $pp$ collisions at $\sqrt{s}=7$ TeV"

description: Integrated cross sections for prompt $J/\psi$ production in the polarization analysis range and extrapolate to $p_T$ = 0.
description: CERN-LHC. An angular analysis of the decay $J/\psi \rightarrow \mu^+ \mu^-$ is performed to measure the polarization of prompt $J/\psi$ mesons produced in pp collisions at $\sqrt{s}$=7 TeV. The dataset corresponds to an integrated luminosity of 0.37 fb-1 collected with the LHCb detector. The measurement is presented as a function of transverse momentum, $p_T$, and rapidity, $y$, of the $J/\psi$ meson, in the kinematic region 2 &lt; $p_T$ &lt; 15 GeV/c and 2.0 &lt; $y$ &lt; 4.5.
DOI: 10.17182/hepdata.66247.v1/t1
title: "Table 1" of "Dynamics of isolated-photon plus jet production in pp collisions at sqrt(s)=7 TeV with the ATLAS detector"

description: The measured bin-averaged cross-section $d\sigma/dE_{\rm T}^\gamma$ for isolated-photon plus jet production. The corrections for hadronisation and underlying-event effects to be applied to the parton-level NLO QCD calculations ($C_{NLO}$) are shown in the last column.
description: CERN-LHC. The dynamics of isolated-photon plus jet production in pp collisions at a centre-of-mass energy of 7 TeV has been studied with the ATLAS detector at the LHC using an integrated luminosity of 37 pb-1. Measurements of isolated-photon plus jet bin-averaged cross sections are presented as functions of photon transverse energy, jet transverse momentum and jet rapidity. In addition, the bin-averaged cross sections as functions of the difference between the azimuthal angles of the photon and the jet, the photon--jet invariant mass and the scattering angle in the photon--jet centre-of-mass frame have been measured. Next-to-leading-order QCD calculations are compared to the measurements and provide a good description of the data, except for the case of the azimuthal opening angle.
DOI: 10.17182/hepdata.66242.v1/t4
title: "Table 4" of "Measurement of $J/\psi$ polarization in $pp$ collisions at $\sqrt{s}=7$ TeV"

description: Double-differential cross-section $d^2\sigma/dp_T/dy$ for prompt $J/\psi$ production in bins of $p_T$ and $y$, with statistical, systematic and polarization uncertainties.
description: CERN-LHC. An angular analysis of the decay $J/\psi \rightarrow \mu^+ \mu^-$ is performed to measure the polarization of prompt $J/\psi$ mesons produced in pp collisions at $\sqrt{s}$=7 TeV. The dataset corresponds to an integrated luminosity of 0.37 fb-1 collected with the LHCb detector. The measurement is presented as a function of transverse momentum, $p_T$, and rapidity, $y$, of the $J/\psi$ meson, in the kinematic region 2 &lt; $p_T$ &lt; 15 GeV/c and 2.0 &lt; $y$ &lt; 4.5.
DOI: 10.17182/hepdata.66247.v1/t2
title: "Table 2" of "Dynamics of isolated-photon plus jet production in pp collisions at sqrt(s)=7 TeV with the ATLAS detector"

description: The measured bin-averaged cross-section $d\sigma/dp_{\rm T}^{jet}$ for isolated-photon plus jet production. Other details as in the caption to Table 1.
description: CERN-LHC. The dynamics of isolated-photon plus jet production in pp collisions at a centre-of-mass energy of 7 TeV has been studied with the ATLAS detector at the LHC using an integrated luminosity of 37 pb-1. Measurements of isolated-photon plus jet bin-averaged cross sections are presented as functions of photon transverse energy, jet transverse momentum and jet rapidity. In addition, the bin-averaged cross sections as functions of the difference between the azimuthal angles of the photon and the jet, the photon--jet invariant mass and the scattering angle in the photon--jet centre-of-mass frame have been measured. Next-to-leading-order QCD calculations are compared to the measurements and provide a good description of the data, except for the case of the azimuthal opening angle.