Search results for "transverse momentum"

showing 10 items of 1015 documents

"Table 12: figure 3d" of "Production of $\pi^0$ and $\eta$ mesons in Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV"

2021

Ratio of $\pi^0$ spectra from the PbSc to the combined spectra from figure 3d from 40-60% semi-peripheral Cu+Au collisions. Type A uncertainties are uncorrelated point-to-point. Systematic noncorr. uncertainties are uncorrelated between PbSc and PbGl subsystems.

ppg209mid-rapidityCU AU --> NEUTRAL X��0transverse momentumNuclear Experiment200.0
researchProduct

"Table 7: figure 3a supplemental" of "Production of $\pi^0$ and $\eta$ mesons in Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV"

2021

$\pi^0$ spectra supplemental to figure 3a from 60-90% peripheral Cu+Au collisions. Type A uncertainties are uncorrelated point-to-point. Type B uncertainties are correlated point-to-point. Type C uncertainties affect the scale of the data.

ppg209mid-rapidityCU AU --> NEUTRAL X��0transverse momentumNuclear Experiment200.0
researchProduct

"Table 13: figure 3d" of "Production of $\pi^0$ and $\eta$ mesons in Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV"

2021

Ratio of $\pi^0$ spectra from the PbGl to the combined spectra from figure 3d from 40-60% semi-peripheral Cu+Au collisions. Type A uncertainties are uncorrelated point-to-point. Systematic noncorr. uncertainties are uncorrelated between PbSc and PbGl subsystems.

ppg209mid-rapidityCU AU --> NEUTRAL X��0transverse momentumNuclear Experiment200.0
researchProduct

"Table 27: figure 4" of "Production of $\pi^0$ and $\eta$ mesons in Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV"

2021

$\eta/\pi^0$ ratio from figure 4 from 20-40% semi-central Cu+Au collisions. Type A uncertainties are uncorrelated point-to-point. Type B uncertainties are correlated point-to-point.

ppg209mid-rapidityCU AU --> NEUTRAL X��0transverse momentumNuclear Experiment��200.0
researchProduct

"Table 26: figure 4" of "Production of $\pi^0$ and $\eta$ mesons in Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV"

2021

$\eta/\pi^0$ ratio from figure 4 from 0-20% central Cu+Au collisions. Type A uncertainties are uncorrelated point-to-point. Type B uncertainties are correlated point-to-point.

ppg209mid-rapidityCU AU --> NEUTRAL X��0transverse momentumNuclear Experiment��200.0
researchProduct

"Table 28: figure 4" of "Production of $\pi^0$ and $\eta$ mesons in Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV"

2021

$\eta/\pi^0$ ratio from figure 4 from 40-60% semi-central Cu+Au collisions. Type A uncertainties are uncorrelated point-to-point. Type B uncertainties are correlated point-to-point.

ppg209mid-rapidityCU AU --> NEUTRAL X��0transverse momentumNuclear Experiment��200.0
researchProduct

"Table 25: figure 4" of "Production of $\pi^0$ and $\eta$ mesons in Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV"

2021

$\eta/\pi^0$ ratio from figure 4 from minimum bias Cu+Au collisions. Type A uncertainties are uncorrelated point-to-point. Type B uncertainties are correlated point-to-point.

ppg209mid-rapidityCU AU --> NEUTRAL X��0transverse momentumNuclear Experiment��200.0
researchProduct

"Table 29: figure 4 supplemental" of "Production of $\pi^0$ and $\eta$ mesons in Cu$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV"

2021

$\eta/\pi^0$ ratio supplemental to figure 4 from 60-90% peripheral Cu+Au collisions. Type A uncertainties are uncorrelated point-to-point. Type B uncertainties are correlated point-to-point.

ppg209mid-rapidityCU AU --> NEUTRAL X��0transverse momentumNuclear Experiment��200.0
researchProduct

Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in Pb-Pb collisions at √sNN = 2.76 TeV

2016

Transverse momentum (pT) spectra of pions, kaons, and protons up to pT = 20 GeV/c have been measured in Pb-Pb collisions at √sNN = 2.76 TeV using the ALICE detector for six different centrality classes covering 0%–80%. The proton-to-pion and the kaon-to-pion ratios both show a distinct peak at pT ≈ 3 GeV/c in central Pb-Pb collisions that decreases for more peripheral collisions. For pT > 10 GeV/c, the nuclear modification factor is found to be the same for all three particle species in each centrality interval within systematic uncertainties of 10%–20%. This suggests there is no direct interplay between the energy loss in the medium and the particle species composition in the hard core of …

protonitNuclear TheoryPb-Pb collisionsHigh Energy Physics::Experimentkaonscentralitypionstransverse momentumNuclear Experiment
researchProduct

Jet fragmentation transverse momentum distributions in pp and p-Pb collisions at √s, √sNN = 5.02 TeV

2021

Jet fragmentation transverse momentum (jT) distributions are measured in proton-proton (pp) and proton-lead (p-Pb) collisions at √sNN = 5.02 TeV with the ALICE experiment at the LHC. Jets are reconstructed with the ALICE tracking detectors and electromagnetic calorimeter using the anti-kT algorithm with resolution parameter R = 0.4 in the pseudorapidity range |η| < 0.25. The jT values are calculated for charged particles inside a fixed cone with a radius R = 0.4 around the reconstructed jet axis. The measured jT distributions are compared with a variety of parton-shower models. Herwig and Pythia 8 based models describe the data well for the higher jT region, while they underestimate the low…

related to the perturbative component of the fragmentation processthe measured trends are successfully described by all models except for Herwig. For the wide componentHerwig and PYTHIA 8 based models slightly underestimate the data for the higher jet transverse momentum region. These measurements set constraints on models of jet fragmentation and hadronisation.Nuclear and High Energy Physicswhile that of the inverse gamma function increases with increasing jet transverse momentum. For the narrow componentHeavy Ion Experimentsand with a Gaussian for lower jT values (called the “narrow component”)hiukkasfysiikkawhile they underestimate the lower jT region. The jT distributions are further characterised by fitting them with a function composed of an inverse gamma function for higher jT values (called the “wide component”)predominantly connected to the hadronisation process. The width of the Gaussian has only a weak dependence on jet transverse momentumJet fragmentation transverse momentum (jT) distributions are measured in proton-proton (pp) and proton-lead (p-Pb) collisions at √sNN = 5.02 TeV with the ALICE experiment at the LHC. Jets are reconstructed with the ALICE tracking detectors and electromagnetic calorimeter using the anti-kT algorithm with resolution parameter R = 0.4 in the pseudorapidity range |η| < 0.25. The jT values are calculated for charged particles inside a fixed cone with a radius R = 0.4 around the reconstructed jet axis. The measured jT distributions are compared with a variety of parton-shower models. Herwig and PYTHIA 8 based models describe the data well for the higher jT region
researchProduct