cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.141612.v1/t1
title: "Figure 3" of "Double Helicity Dependence of Jet Properties from Dihadrons in Longitudinally Polarized p+p Collisions at sqrt(s) = 200 GeV"

description: Values of derived $$ and $\hat{x_h}$.
description: It has been postulated that partonic orbital angular momentum can lead to a significant double-helicity dependence in the net transverse momentum of Drell-Yan dileptons produced in longitudinally polarized $p$+$p$ collisions. Analogous effects are also expected for dijet production. If confirmed by experiment, this hypothesis, which is based on semi-classical arguments, could lead to a new approach for studying the contributions of orbital angular momentum to the proton spin. We report the first measurement of the double-helicity dependence of the dijet transverse momentum in longitudinally polarized $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV from data taken by the PHENIX experiment in 2005 and 2006. The analysis deduces the transverse momentum of the dijet from the widths of the near- and far-side peaks in the azimuthal correlation of the dihadrons. When averaged over the transverse momentum of the triggered particle, the difference of the root-mean-square of the dijet transverse momentum between like- and unlike-helicity collisions is found to be -37 $\pm$ 88$^{(stat)}$ $\pm$ 14$^{(syst)}$ MeV/$c$.
DOI: 10.17182/hepdata.141612.v1/t2
title: "Figure 4" of "Double Helicity Dependence of Jet Properties from Dihadrons in Longitudinally Polarized p+p Collisions at sqrt(s) = 200 GeV"

description: Helicity-averaged $\sqrt{}$ and $\sqrt{}$ for combined 2005 and 2006 data.
description: It has been postulated that partonic orbital angular momentum can lead to a significant double-helicity dependence in the net transverse momentum of Drell-Yan dileptons produced in longitudinally polarized $p$+$p$ collisions. Analogous effects are also expected for dijet production. If confirmed by experiment, this hypothesis, which is based on semi-classical arguments, could lead to a new approach for studying the contributions of orbital angular momentum to the proton spin. We report the first measurement of the double-helicity dependence of the dijet transverse momentum in longitudinally polarized $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV from data taken by the PHENIX experiment in 2005 and 2006. The analysis deduces the transverse momentum of the dijet from the widths of the near- and far-side peaks in the azimuthal correlation of the dihadrons. When averaged over the transverse momentum of the triggered particle, the difference of the root-mean-square of the dijet transverse momentum between like- and unlike-helicity collisions is found to be -37 $\pm$ 88$^{(stat)}$ $\pm$ 14$^{(syst)}$ MeV/$c$.
DOI: 10.17182/hepdata.141612.v1/t3
title: "Figure 5" of "Double Helicity Dependence of Jet Properties from Dihadrons in Longitudinally Polarized p+p Collisions at sqrt(s) = 200 GeV"

description: Difference in $\sqrt{}$ and $\sqrt{}$ for like- minus unlike-helicity combinations.
description: It has been postulated that partonic orbital angular momentum can lead to a significant double-helicity dependence in the net transverse momentum of Drell-Yan dileptons produced in longitudinally polarized $p$+$p$ collisions. Analogous effects are also expected for dijet production. If confirmed by experiment, this hypothesis, which is based on semi-classical arguments, could lead to a new approach for studying the contributions of orbital angular momentum to the proton spin. We report the first measurement of the double-helicity dependence of the dijet transverse momentum in longitudinally polarized $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV from data taken by the PHENIX experiment in 2005 and 2006. The analysis deduces the transverse momentum of the dijet from the widths of the near- and far-side peaks in the azimuthal correlation of the dihadrons. When averaged over the transverse momentum of the triggered particle, the difference of the root-mean-square of the dijet transverse momentum between like- and unlike-helicity collisions is found to be -37 $\pm$ 88$^{(stat)}$ $\pm$ 14$^{(syst)}$ MeV/$c$.
DOI: 10.17182/hepdata.141613.v1/t1
title: "Figure 1a" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Correlation of reaction planes between two beam counters for the second moment is shown as a function of centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t2
title: "Figure 1b" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: The value of $v_2$ for charged particles is shown as a function of centrality (middle) and as a function of $p_T$ (right).
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t3
title: "Figure 1c" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: The value of $v_2$ for charged particles is shown as a function of transverse momentum, $p_T$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t4
title: "Figure 2a" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for identified particle $\pi^-$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t5
title: "Figure 2b" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for identified particle $K^-$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t6
title: "Figure 2c" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for identified particle $\bar{p}$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t7
title: "Figure 2d" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for identified particle $\pi^+$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t8
title: "Figure 2e" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for identified particle $K$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t9
title: "Figure 2f" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for identified particle $p$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t10
title: "Figure 2g" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for combined particles $\pi^+$ and $\pi^-$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t11
title: "Figure 2h" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for combined particles $K^+$ and $K^-$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t12
title: "Figure 2i" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for combined particles $p$ and $\bar{p}$.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t13
title: "Figure 2j" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for combined particles $\pi^+$ and $\pi^-$ scaled by quarks for each particle as motivated by a quark coalescence model.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t14
title: "Figure 2k" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for combined particles $K^+$ and $K^-$ scaled by quarks for each particle as motivated by a quark coalescence model.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t15
title: "Figure 2l" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependepnce of $v_2$ for combined particles $p$ and $\bar{p}$ scaled by quarks for each particle as motivated by a quark coalescence model.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t16
title: "Figure 3a" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for negative charged particle distributions at 0-20% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t17
title: "Figure 3b" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for combined $\pi^-$ and $K^-$ at 0-20% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t18
title: "Figure 3c" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for $\bar{p}$ at 0-20% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t19
title: "Figure 3d" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for positive charged particle distributions at 0-20% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t20
title: "Figure 3e" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for combined $\pi^+$ and $K^+$ at 0-20% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t21
title: "Figure 3f" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for $p$ at 0-20% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t22
title: "Figure 3g" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for negative charged particle distributions at 20-40% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t23
title: "Figure 3h" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for combined $\pi^-$ and $K^-$ at 20-40% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t24
title: "Figure 3i" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for $\bar{p}$ at 20-40% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t25
title: "Figure 3j" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for positive charged particle distributions at 20-40% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.
DOI: 10.17182/hepdata.141613.v1/t26
title: "Figure 3k" of "Elliptic flow of identified hadrons in Au + Au collisions at s(NN)**(1/2) = 200-GeV."

description: Transverse momentum dependence of $v_2$ for combined $\pi^+$ and $K^+$ at 20-40% centrality.
description: The anisotropy paramenter ($v_2$), the second harmonic of the azimuthal particles distributions, has been measured with the PHENIX detector in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for identified and inclusive charged particle production at central rapidities (|$\eta$| = 3-4). We observe that the $v_2$ of mesons falls below that of (anti)baryons for $p_T$ &gt; 2 GeV/$c$, in marked contrast to the predictions of a hydrodynamical model. A quard coalescence model is also investigated.