Refine
Year of publication
Language
- English (142)
Has Fulltext
- yes (142)
Is part of the Bibliography
- no (142)
Keywords
- BESIII (3)
- Elastic scattering (3)
- Polarization (3)
- e +-e − Experiments (3)
- Charm Physics (2)
- Collectivity (2)
- Correlation (2)
- Diffraction (2)
- Electroweak Interaction (2)
- Particle and Resonance Production (2)
- RHIC (2)
- Shear viscosity (2)
- B-slope (1)
- Branching fraction (1)
- Branching fractions (1)
- Charged-particle multiplicity (1)
- Charm quark spatial diffusion coefficient (1)
- Charmonia (1)
- Charmonium (1)
- Coalescence (1)
- Cold nuclear matter effects (1)
- Critical point (1)
- Deuteron production (1)
- Di-hadron correlations (1)
- Elliptic flow (1)
- FOS: Physical sciences (1)
- Flavour Physics (1)
- Flow (1)
- Groomed jet radius (1)
- Hadronization (1)
- Heavy Ion Experiments (1)
- Heavy Quark Production (1)
- Heavy ion collisions (1)
- Heavy-Ion Collision (1)
- Heavy-flavor decay electron (1)
- Heavy-ion (1)
- Heavy-ion collisions (1)
- High Energy Physics - Experiment (hep-ex) (1)
- Higher moments (1)
- Interference fragmentation function (1)
- J/ψ suppression (1)
- Jet substructure (1)
- Multiple parton interactions (1)
- Net-charge correlations (1)
- Net-charge fluctuations (1)
- Nonflow (1)
- Proton-proton collisions (1)
- Proton–proton collisions (1)
- Quarkonium (1)
- Radiative decay (1)
- STAR (1)
- Semi-leptonic decays (1)
- SoftDrop (1)
- Spectroscopy (1)
- Spin alignment (1)
- Splitting function (1)
- Thermal model (1)
- Transversity (1)
- e+e− Experiments (1)
- electron-positron collision (1)
- hadron spectroscopy (1)
- p+p collisions (1)
- tetraquark (1)
- Λ+c baryon (1)
Institute
Data from the first physics run at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory, Au+Au collisions at sqrt[sNN]=130 GeV, have been analyzed by the STAR Collaboration using three-pion correlations with charged pions to study whether pions are emitted independently at freeze-out. We have made a high-statistics measurement of the three-pion correlation function and calculated the normalized three-particle correlator to obtain a quantitative measurement of the degree of chaoticity of the pion source. It is found that the degree of chaoticity seems to increase with increasing particle multiplicity.
The polarization of Λ and Λ¯ hyperons along the beam direction has been measured relative to the second and third harmonic event planes in isobar Ru+Ru and Zr+Zr collisions at √sNN = 200 GeV. This is the first experimental evidence of the hyperon polarization by the triangular flow originating from the initial density fluctuations. The amplitudes of the sine modulation for the second and third harmonic results are comparable in magnitude, increase from central to peripheral collisions, and show a mild pT dependence. The azimuthal angle dependence of the polarization follows the vorticity pattern expected due to elliptic and triangular anisotropic flow, and qualitatively disagree with most hydrodynamic model calculations based on thermal vorticity and shear induced contributions. The model results based on one of existing implementations of the shear contribution lead to a correct azimuthal angle dependence, but predict centrality and pT dependence that still disagree with experimental measurements. Thus, our results provide stringent constraints on the thermal vorticity and shear-induced contributions to hyperon polarization. Comparison to previous measurements at RHIC and the LHC for the second-order harmonic results shows little dependence on the collision system size and collision energy.