cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.165512.v1/t2
title: "Table 2" of "Discovery of suppressed charged-particle production in ultrarelativistic oxygen-oxygen collisions"

description: Inclusive charged particle spectra for OO collisions at 5.36 TeV for $3 &lt; p_{T} (GeV) &lt;103.6$. The errors represent statistical, systematics and normalization uncertainties.
description: A hot medium, known as the quark-gluon plasma (QGP), is created in collisions of relativistic heavy nuclei such as lead or gold. Highly energetic quarks and gluons,collectively referred to as partons, lose energy as they travel through the QGP leading to suppressed production of particles with transverse momenta (pT) of roughly 10 - 100 GeV. This suppression is typically quantified with the nuclear modification factor (RAA). Questions regarding what minimum system size is required to see parton energy loss effects remain, as no such suppression has been seen in smaller proton-lead collisions. Experiments involving light nuclei examine a domain that lies between these two extreme cases. Using 6.1 $nb^{-1}$ of oxygen-oxygen (OO) collisions and 1.02 $pb^{-1}$ of proton-proton data collected at a nucleon-nucleon center-of-mass energy of $\sqrt{s_{NN}}=5.36 TeV$ by the CMS experiment at the CERN LHC, charged particle invariant cross sections and the OO charged particle R_{AA} are measured as a function of particle $p_{T}$ for the first time. The $R_{AA}$ is notably suppressed, with a local minimum of $0.69 \pm 0.04$ at $p_{T}=6 GeV$, but increases to a value of $0.97 \pm 0.06$ at $p_{T}=100 \text{GeV}$. To evaluate if parton energy loss effects may be present in OO collisions, the data are compared to previous measurements of other collision systems and a variety of theoretical models.
DOI: 10.17182/hepdata.165512.v1/t1
title: "Table 1" of "Discovery of suppressed charged-particle production in ultrarelativistic oxygen-oxygen collisions"

description: Inclusive charged particle spectra for pp collisions at 5.36 TeV for $3 &lt; p_{T} (GeV) &lt;103.6$. The errors represent statistical, systematics and normalization uncertainties.
description: A hot medium, known as the quark-gluon plasma (QGP), is created in collisions of relativistic heavy nuclei such as lead or gold. Highly energetic quarks and gluons,collectively referred to as partons, lose energy as they travel through the QGP leading to suppressed production of particles with transverse momenta (pT) of roughly 10 - 100 GeV. This suppression is typically quantified with the nuclear modification factor (RAA). Questions regarding what minimum system size is required to see parton energy loss effects remain, as no such suppression has been seen in smaller proton-lead collisions. Experiments involving light nuclei examine a domain that lies between these two extreme cases. Using 6.1 $nb^{-1}$ of oxygen-oxygen (OO) collisions and 1.02 $pb^{-1}$ of proton-proton data collected at a nucleon-nucleon center-of-mass energy of $\sqrt{s_{NN}}=5.36 TeV$ by the CMS experiment at the CERN LHC, charged particle invariant cross sections and the OO charged particle R_{AA} are measured as a function of particle $p_{T}$ for the first time. The $R_{AA}$ is notably suppressed, with a local minimum of $0.69 \pm 0.04$ at $p_{T}=6 GeV$, but increases to a value of $0.97 \pm 0.06$ at $p_{T}=100 \text{GeV}$. To evaluate if parton energy loss effects may be present in OO collisions, the data are compared to previous measurements of other collision systems and a variety of theoretical models.
DOI: 10.17182/hepdata.165512.v1/t3
title: "Table 3" of "Discovery of suppressed charged-particle production in ultrarelativistic oxygen-oxygen collisions"

description: Inclusive charged particle R_{AA} for 5.36 TeV OO collisions for $3 &lt; p_{T} (GeV) &lt;103.6$. The errors represent statistical, systematics and normalization uncertainties.
description: A hot medium, known as the quark-gluon plasma (QGP), is created in collisions of relativistic heavy nuclei such as lead or gold. Highly energetic quarks and gluons,collectively referred to as partons, lose energy as they travel through the QGP leading to suppressed production of particles with transverse momenta (pT) of roughly 10 - 100 GeV. This suppression is typically quantified with the nuclear modification factor (RAA). Questions regarding what minimum system size is required to see parton energy loss effects remain, as no such suppression has been seen in smaller proton-lead collisions. Experiments involving light nuclei examine a domain that lies between these two extreme cases. Using 6.1 $nb^{-1}$ of oxygen-oxygen (OO) collisions and 1.02 $pb^{-1}$ of proton-proton data collected at a nucleon-nucleon center-of-mass energy of $\sqrt{s_{NN}}=5.36 TeV$ by the CMS experiment at the CERN LHC, charged particle invariant cross sections and the OO charged particle R_{AA} are measured as a function of particle $p_{T}$ for the first time. The $R_{AA}$ is notably suppressed, with a local minimum of $0.69 \pm 0.04$ at $p_{T}=6 GeV$, but increases to a value of $0.97 \pm 0.06$ at $p_{T}=100 \text{GeV}$. To evaluate if parton energy loss effects may be present in OO collisions, the data are compared to previous measurements of other collision systems and a variety of theoretical models.
DOI: 10.17182/hepdata.168854.v1/t1
title: "$\mathrm{D^{0}}$ jets in Pb$-$Pb and pp at 5.02 TeV" of "Investigating charm quark energy loss in medium with the nuclear modification factor of D$^0$-tagged jets"

description: $p_{\mathrm{T,ch\ jet}}$-differential yields of charm jets tagged with $\mathrm{D^{0}}$ mesons for $R=0.3$, in Pb$-$Pb and pp collisions at $\sqrt{s}=5.02$ TeV.
description: The nuclear modification factor $R_\mathrm{AA}$ of charm jets, identified by the presence of a D$^0$ meson among the jet constituents, has been measured for the first time in Pb$-$Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with the ALICE detector at the LHC. The D$^0$ mesons and their charge conjugates are reconstructed from the hadronic decay D$^0\to \mathrm K^{-}\pi^{+}$. Jets are reconstructed from D$^0$-meson candidates and charged particles using the anti-$k_\mathrm{T}$ algorithm with jet resolution parameter $R~=~0.3$, in the jet transverse momentum ($p_{\mathrm{T}}$) range 5$~&lt; p_\mathrm{T}^\mathrm{ch\ jet}&lt;$ 50 GeV/$c$ and pseudorapidity $|\eta^\mathrm{ch~jet}| &lt; 0.6$. A hint of reduced suppression in the charm-jet $R_{\mathrm{AA}}$ is observed in comparison to inclusive jets in central Pb$-$Pb collisions with a significance of about 2$\sigma$ in 20 $~&lt;~p_\mathrm{T}^\mathrm{ch\ jet}~&lt;~$ 50 GeV/$c$, suggesting the in-medium energy loss to depend on both the difference between quark and gluon coupling strength (Casimir colour-charge effect) and quark mass (dead-cone effect). The data are compared with model calculations that include mass effects in the in-medium energy loss. Among these, LIDO provides the best description of the data, highlighting the role of mass effects in interpreting the results.
DOI: 10.17182/hepdata.42452.v1/t1
title: "Table 1" of "Observation of the top quark"

description: Cross section refers to top quark mass equal 199. (+19, -21, +- 22) GeV.
description: FNAL-COLLIDER. D0 collaboration. Observation of the top quark.
DOI: 10.17182/hepdata.42453.v1/t1
title: "Table 1" of "Observation of top quark production in anti-p p collisions"

description: Cross section refers to top quark mass equal 176. (+- 8 +- 10) GeV.. Error contains both statistical and systematic uncertainty.
description: FNAL-COLLIDER. CDF collaboration. Observation of top quark production.
DOI: 10.17182/hepdata.159491.v1/t1
title: "Figure 2 a)" of "Measuring spin correlation between quarks during QCD confinement"

description: $\mathrm{d}N/\mathrm{d}\cos\theta^\star$ distributions of decay (anti-)protons for short-range pairs ($|\Delta y| &lt; 0.5$ and $|\Delta \phi| &lt; \pi/3$) $\Lambda\bar{\Lambda}$, $\Lambda\Lambda$, and $\bar{\Lambda}\bar{\Lambda}$ hyperon pairs measured at mid-rapidity ($|y| &lt; 1$).
description: No data abstract available.
DOI: 10.17182/hepdata.159491.v1/t2
title: "Figure 2 b)" of "Measuring spin correlation between quarks during QCD confinement"

description: $\mathrm{d}N/\mathrm{d}\cos\theta^\star$ distributions of decay (anti-)protons for long-range pairs ($0.5 &lt; |\Delta y| &lt; 2.0$ or $\pi/3 &lt;|\Delta \phi| &lt; \pi$) $\Lambda\bar{\Lambda}$, $\Lambda\Lambda$, and $\bar{\Lambda}\bar{\Lambda}$ hyperon pairs measured at mid-rapidity ($|y| &lt; 1$).
description: No data abstract available.
DOI: 10.17182/hepdata.159491.v1/t3
title: "Figure 3 a)" of "Measuring spin correlation between quarks during QCD confinement"

description: Spin correlation $P_\mathrm{\Lambda_1\Lambda_2}$ of short-range $\Lambda\bar{\Lambda}$ (1), $\Lambda\Lambda$ (2), and $\bar{\Lambda}\bar{\Lambda}$ (3) hyperon pars and $K^0_\mathrm{S}K^0_\mathrm{S}$ (4) meson pairs.
description: No data abstract available.
DOI: 10.17182/hepdata.159491.v1/t4
title: "Figure 3 b)" of "Measuring spin correlation between quarks during QCD confinement"

description: Spin correlation $P_\mathrm{\Lambda_1\Lambda_2}$ of long-range $\Lambda\bar{\Lambda}$ (1), $\Lambda\Lambda$ (2), and $\bar{\Lambda}\bar{\Lambda}$ (3) hyperon pairs and $K^0_\mathrm{S}K^0_\mathrm{S}$ (4) meson pairs.
description: No data abstract available.
DOI: 10.17182/hepdata.159491.v1/t5
title: "Figure 4" of "Measuring spin correlation between quarks during QCD confinement"

description: Spin correlation $P_\mathrm{\Lambda_1\Lambda_2}$ of $\Lambda\bar{\Lambda}$ hyperon pairs as a function of pair separation $\Delta R = \sqrt{\Delta y^{2}+\Delta\phi^{2}}$.
description: No data abstract available.
DOI: 10.17182/hepdata.159491.v1/t6
title: "Figure 2 from Methods" of "Measuring spin correlation between quarks during QCD confinement"

description: Relative contribution to $\Lambda\bar{\Lambda}$ hyperon pair feed-down from PYTHIA 8.2 event generator events, which are simulated through the STAR detector. The individual bins correspond to different $\Lambda\bar{\Lambda}$ hyperon pair parent particle combinations - (1) Both primary, (2) Primary + $\Sigma^0$, (3) Primary + Other heavier hyperon, (4) Both $\Sigma^0$, (5) $\Sigma^0$ + Other heavier hyperon, and (6) Both from other heavier hyperon.
description: No data abstract available.
DOI: 10.17182/hepdata.168854.v1/t2
title: "$\mathrm{D^{0}}$-jet $R_{\mathrm{AA}}$" of "Investigating charm quark energy loss in medium with the nuclear modification factor of D$^0$-tagged jets"

description: $p_{\mathrm{T,ch\ jet}}$-differential nuclear modification factor of charm jets tagged with $\mathrm{D^{0}}$ mesons for $R=0.3$ in Pb-Pb collisions at $\sqrt{s}=5.02$ TeV.
description: The nuclear modification factor $R_\mathrm{AA}$ of charm jets, identified by the presence of a D$^0$ meson among the jet constituents, has been measured for the first time in Pb$-$Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with the ALICE detector at the LHC. The D$^0$ mesons and their charge conjugates are reconstructed from the hadronic decay D$^0\to \mathrm K^{-}\pi^{+}$. Jets are reconstructed from D$^0$-meson candidates and charged particles using the anti-$k_\mathrm{T}$ algorithm with jet resolution parameter $R~=~0.3$, in the jet transverse momentum ($p_{\mathrm{T}}$) range 5$~&lt; p_\mathrm{T}^\mathrm{ch\ jet}&lt;$ 50 GeV/$c$ and pseudorapidity $|\eta^\mathrm{ch~jet}| &lt; 0.6$. A hint of reduced suppression in the charm-jet $R_{\mathrm{AA}}$ is observed in comparison to inclusive jets in central Pb$-$Pb collisions with a significance of about 2$\sigma$ in 20 $~&lt;~p_\mathrm{T}^\mathrm{ch\ jet}~&lt;~$ 50 GeV/$c$, suggesting the in-medium energy loss to depend on both the difference between quark and gluon coupling strength (Casimir colour-charge effect) and quark mass (dead-cone effect). The data are compared with model calculations that include mass effects in the in-medium energy loss. Among these, LIDO provides the best description of the data, highlighting the role of mass effects in interpreting the results.
DOI: 10.25549/kda-c48-2337
title: Photograph album of V.W. Peters, 1928-2002

description: Photograph album of Victor Wellington Peters, missionary to Korea, documenting the years 1928-2002, first in Korea and later in the USA.
DOI: 10.17182/hepdata.157580.v1/t1
title: "Table 1" of "Positronium laser cooling via the $1^3S$-$2^3P$ transition with a broadband laser pulse"

description: SSPALS spectra of positronium in vacuum without lasers, with the 205 nm and 1064 nm lasers, with the 243 nm laser only, and with all three lasers 243 nm, 205 nm and 1064 nm. The 243 nm laser is firing during the time window from −20 to 50 ns, while the 205 nm and 1064 nm are injected 75 ns after positron implantation time (t = 0 ns). Each curve is an average of 90 individual spectra. The statistical error is smaller than the linewidths. For analysis, the spectra were integrated between 150 and 400 ns.
description: CERN-AEgIS. Data related to the first experimental demonstration of laser cooling of a large fraction of a positronium cloud by strongly saturating the 1$^3$S-2$^3$P transition with a 70 ns long broadband energetic pulse emitted by an alexandrite laser system developed for this purpose. A set of typical SSPALS spectra is presented in Table 1. Doppler profiles are presented in Table 2 and 3. A reduction of the temperature from 380 K down to 180 K (Table 4) and an increase of the population in the coldest fraction of the ensemble by 50% (Table 5) are observed. In addition, an increase of the number of positronium atoms annihilating in the ground state due to the time spent by the atoms in the long lived 2$^3$P state is reported. This effect allows to slow down annihilation of positronium and keep a high number of atoms in the laser-cooled ensemble of atoms.
DOI: 10.17182/hepdata.157580.v1/t2
title: "Table 2" of "Positronium laser cooling via the $1^3S$-$2^3P$ transition with a broadband laser pulse"

description: Ps velocity distribution measured by SSPALS. Transverse Doppler profile measured by two-photon resonant ionization. A Gaussian fit yields an rms width of 44(1) pm, which translates to a Ps rms velocity of 5.3 $\pm$ 0.2 × 10$^4$ m/s after deconvoluting the laser bandwidth.
description: CERN-AEgIS. Data related to the first experimental demonstration of laser cooling of a large fraction of a positronium cloud by strongly saturating the 1$^3$S-2$^3$P transition with a 70 ns long broadband energetic pulse emitted by an alexandrite laser system developed for this purpose. A set of typical SSPALS spectra is presented in Table 1. Doppler profiles are presented in Table 2 and 3. A reduction of the temperature from 380 K down to 180 K (Table 4) and an increase of the population in the coldest fraction of the ensemble by 50% (Table 5) are observed. In addition, an increase of the number of positronium atoms annihilating in the ground state due to the time spent by the atoms in the long lived 2$^3$P state is reported. This effect allows to slow down annihilation of positronium and keep a high number of atoms in the laser-cooled ensemble of atoms.
DOI: 10.17182/hepdata.157580.v1/t3
title: "Table 3" of "Positronium laser cooling via the $1^3S$-$2^3P$ transition with a broadband laser pulse"

description: Ps velocity distribution measured by SSPALS. Velocity-resolved increase in the number of ground state Ps atoms, induced by the 243 nm transitory excitation to the 2$^3$P level. At resonance, the expected Lamb dip is observed. A 2-Gaussian fit yields an rms width of the enveloping Gaussian of 44(3) pm, which corresponds to a Ps rms velocity of 4.9 $\pm$ 0.4 × 10$^4$ m/s.
description: CERN-AEgIS. Data related to the first experimental demonstration of laser cooling of a large fraction of a positronium cloud by strongly saturating the 1$^3$S-2$^3$P transition with a 70 ns long broadband energetic pulse emitted by an alexandrite laser system developed for this purpose. A set of typical SSPALS spectra is presented in Table 1. Doppler profiles are presented in Table 2 and 3. A reduction of the temperature from 380 K down to 180 K (Table 4) and an increase of the population in the coldest fraction of the ensemble by 50% (Table 5) are observed. In addition, an increase of the number of positronium atoms annihilating in the ground state due to the time spent by the atoms in the long lived 2$^3$P state is reported. This effect allows to slow down annihilation of positronium and keep a high number of atoms in the laser-cooled ensemble of atoms.
DOI: 10.17182/hepdata.157580.v1/t4
title: "Table 4" of "Positronium laser cooling via the $1^3S$-$2^3P$ transition with a broadband laser pulse"

description: One-dimensional transverse Doppler profiles of the Ps cloud with and without interaction with the 243 nm cooling laser beam at a fixed frequency detuning of −200 GHz. The semitransparent bands represent the statistical measurement error (one standard deviation of the average).
description: CERN-AEgIS. Data related to the first experimental demonstration of laser cooling of a large fraction of a positronium cloud by strongly saturating the 1$^3$S-2$^3$P transition with a 70 ns long broadband energetic pulse emitted by an alexandrite laser system developed for this purpose. A set of typical SSPALS spectra is presented in Table 1. Doppler profiles are presented in Table 2 and 3. A reduction of the temperature from 380 K down to 180 K (Table 4) and an increase of the population in the coldest fraction of the ensemble by 50% (Table 5) are observed. In addition, an increase of the number of positronium atoms annihilating in the ground state due to the time spent by the atoms in the long lived 2$^3$P state is reported. This effect allows to slow down annihilation of positronium and keep a high number of atoms in the laser-cooled ensemble of atoms.
DOI: 10.17182/hepdata.157580.v1/t5
title: "Table 5" of "Positronium laser cooling via the $1^3S$-$2^3P$ transition with a broadband laser pulse"

description: Number of Ps atoms with v$_{1D}$ &lt; 3.7 × 10$^4$ m/s, as a function of the cooling laser frequency detuning, normalized to the number of Ps atoms in the absence of all lasers. The dashed horizontal line represents the reference population of Ps in this velocity range with the cooling laser off. The highest observed relative increase is 58(9)% at a cooling laser frequency detuning of −350 GHz. The semitransparent bands represent the statistical uncertainties (one standard deviation of the average).
description: CERN-AEgIS. Data related to the first experimental demonstration of laser cooling of a large fraction of a positronium cloud by strongly saturating the 1$^3$S-2$^3$P transition with a 70 ns long broadband energetic pulse emitted by an alexandrite laser system developed for this purpose. A set of typical SSPALS spectra is presented in Table 1. Doppler profiles are presented in Table 2 and 3. A reduction of the temperature from 380 K down to 180 K (Table 4) and an increase of the population in the coldest fraction of the ensemble by 50% (Table 5) are observed. In addition, an increase of the number of positronium atoms annihilating in the ground state due to the time spent by the atoms in the long lived 2$^3$P state is reported. This effect allows to slow down annihilation of positronium and keep a high number of atoms in the laser-cooled ensemble of atoms.
DOI: 10.17182/hepdata.156758.v1/t1
title: "Figure 4a" of "Exploring small-angle emissions in charm quark jets in proton-proton collisions at $\sqrt{s}$ = 5.02 TeV"

description: The unfolded late-$k_{T}$ angular distribution for prompt $D^{0}$ jets.
description: We present a measurement of the angular structure of jets containing a prompt D$^0$ meson and of inclusive jets in proton-proton (pp) collisions at the LHC at a center-of-mass energy of 5.02 TeV. The measurement uses collision data collected by the CMS experiment in 2017, corresponding to an integrated luminosity of 301 pb$^{-1}$. Two jet grooming algorithms, late-$k_\mathrm{T}$ and soft drop, are used to study the intrajet radiation pattern of these jets using iterative Cambridge--Aachen declustering. The splitting-angle distributions obtained with these two algorithms show that there is a shift of the distribution for jets containing a prompt D$^0$ meson with respect to inclusive jets for jet transverse momentum of $100&lt; p_\mathrm{T}^\text{jet}&lt;120$ GeV. The shift observed in the late-$k_\mathrm{T}$ grooming approach is consistent with the dead-cone effect, whereas the shift for splittings selected with the soft-drop algorithm appears to be dominated by gluon splitting to charm quark-antiquark pairs. The measured distributions are corrected to the particle level and can be used to provide constraints on the substructure of high-$p_\mathrm{T}$ charm quark jets.
DOI: 10.17182/hepdata.156758.v1/t2
title: "Figure 4b" of "Exploring small-angle emissions in charm quark jets in proton-proton collisions at $\sqrt{s}$ = 5.02 TeV"

description: The unfolded late-$k_{T}$ angular distribution for inclusive jets.
description: We present a measurement of the angular structure of jets containing a prompt D$^0$ meson and of inclusive jets in proton-proton (pp) collisions at the LHC at a center-of-mass energy of 5.02 TeV. The measurement uses collision data collected by the CMS experiment in 2017, corresponding to an integrated luminosity of 301 pb$^{-1}$. Two jet grooming algorithms, late-$k_\mathrm{T}$ and soft drop, are used to study the intrajet radiation pattern of these jets using iterative Cambridge--Aachen declustering. The splitting-angle distributions obtained with these two algorithms show that there is a shift of the distribution for jets containing a prompt D$^0$ meson with respect to inclusive jets for jet transverse momentum of $100&lt; p_\mathrm{T}^\text{jet}&lt;120$ GeV. The shift observed in the late-$k_\mathrm{T}$ grooming approach is consistent with the dead-cone effect, whereas the shift for splittings selected with the soft-drop algorithm appears to be dominated by gluon splitting to charm quark-antiquark pairs. The measured distributions are corrected to the particle level and can be used to provide constraints on the substructure of high-$p_\mathrm{T}$ charm quark jets.
DOI: 10.17182/hepdata.156758.v1/t3
title: "Figure 5a" of "Exploring small-angle emissions in charm quark jets in proton-proton collisions at $\sqrt{s}$ = 5.02 TeV"

description: The unfolded SD angular distribution for prompt $D^{0}$ jets.
description: We present a measurement of the angular structure of jets containing a prompt D$^0$ meson and of inclusive jets in proton-proton (pp) collisions at the LHC at a center-of-mass energy of 5.02 TeV. The measurement uses collision data collected by the CMS experiment in 2017, corresponding to an integrated luminosity of 301 pb$^{-1}$. Two jet grooming algorithms, late-$k_\mathrm{T}$ and soft drop, are used to study the intrajet radiation pattern of these jets using iterative Cambridge--Aachen declustering. The splitting-angle distributions obtained with these two algorithms show that there is a shift of the distribution for jets containing a prompt D$^0$ meson with respect to inclusive jets for jet transverse momentum of $100&lt; p_\mathrm{T}^\text{jet}&lt;120$ GeV. The shift observed in the late-$k_\mathrm{T}$ grooming approach is consistent with the dead-cone effect, whereas the shift for splittings selected with the soft-drop algorithm appears to be dominated by gluon splitting to charm quark-antiquark pairs. The measured distributions are corrected to the particle level and can be used to provide constraints on the substructure of high-$p_\mathrm{T}$ charm quark jets.