Refine
Year of publication
Language
- English (384)
Has Fulltext
- yes (384)
Is part of the Bibliography
- no (384)
Keywords
- BESIII (14)
- Branching fraction (9)
- LHC (9)
- e +-e − Experiments (9)
- Hadronic decays (5)
- Particle and Resonance Production (5)
- Quarkonium (5)
- ALICE experiment (4)
- Branching fractions (4)
- Lepton colliders (4)
- ALICE (3)
- Charm Physics (3)
- Charmed mesons (3)
- Charmonium (3)
- Electroweak interaction (3)
- Exotics (3)
- Experimental nuclear physics (3)
- Experimental particle physics (3)
- Initial state radiation (3)
- Spectroscopy (3)
- e+-e− Experiments (3)
- pp collisions (3)
- Beauty production (2)
- Bhabha (2)
- Charm physics (2)
- Cross section (2)
- Electroweak Interaction (2)
- Elliptic flow (2)
- Hadronic cross section (2)
- Heavy-ion collisions (2)
- Jets (2)
- Leptonic, semileptonic & radiative decays (2)
- Muon anomaly (2)
- Particle decays (2)
- Pb–Pb collisions (2)
- Pion form factor (2)
- QCD (2)
- Quark-Gluon Plasma (2)
- Single electrons (2)
- 900 GeV (1)
- ALICE detector (1)
- Angular distribution (1)
- Annihilation (1)
- Anti-nuclei (1)
- B-slope (1)
- BESIII detector (1)
- Born cross section measurement (1)
- CP violation (1)
- Charm quark spatial diffusion coefficient (1)
- Charmonium (-like) (1)
- Coalescence (1)
- Collectivity (1)
- Comparison with QCD (1)
- Correlation (1)
- Covariance matrix (1)
- Critical point (1)
- Cross section measurements (1)
- D meson (1)
- D0 and D+ mesons (1)
- Dalitz decay (1)
- Dark photon (1)
- Dark sector (1)
- Deuteron production (1)
- Diffraction (1)
- D⁰ meson (1)
- Elastic scattering (1)
- Electromagnetic form factor (1)
- Electromagnetic form factors (1)
- Electron-pion identification (1)
- FOS: Physical sciences (1)
- Femtoscopy (1)
- Fibre/foam sandwich radiator (1)
- Flavor changing neutral currents (1)
- Flavor symmetries (1)
- Flavour Physics (1)
- Form factors (1)
- HBT (1)
- Hadron production (1)
- Hadron-Hadron Scattering (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hadrons (1)
- Heavy Ion Experiment (1)
- Heavy Ions (1)
- Heavy flavor production (1)
- Heavy flavour production (1)
- Heavy-flavor decay electron (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- High Energy Physics - Experiment (hep-ex) (1)
- Higher moments (1)
- Hyperons (1)
- Inclusive spectra (1)
- Intensity interferometry (1)
- Invisible decays (1)
- Ionisation energy loss (1)
- Jets and Jet Substructure (1)
- Mid-rapidity (1)
- Multi-strange baryons (1)
- Multi-wire proportional drift chamber (1)
- Neural network (1)
- Neutrinos (1)
- Nuclear modification factor (1)
- PYTHIA (1)
- Particle and resonance production (1)
- Particle phenomena (1)
- Pb–Pb (1)
- Polarization (1)
- Properties of Hadrons (1)
- Proton (1)
- Proton–proton (1)
- Proton–proton collisions (1)
- Quantum chromodynamics (1)
- Quark Production (1)
- R value (1)
- Radiative decay (1)
- Rare decays (1)
- Relativistic heavy-ion collisions (1)
- Semi-leptonic decays (1)
- Shear viscosity (1)
- Single muons (1)
- TR (1)
- Techniques Electromagnetic calorimeters (1)
- Thermal model (1)
- Tracking (1)
- Transition radiation detector (1)
- Transverse momentum (1)
- Trigger (1)
- Triple quarkonia (1)
- Vector Boson Production (1)
- Xenon-based gas mixture (1)
- Y (4260) (1)
- Y states (1)
- center-of-mass energy (1)
- charmonium-like states (1)
- dE/dx (1)
- dimuon (1)
- diphoton (1)
- e+e − annihilation (1)
- e+e⁻ − Experiments (1)
- e+e− Experiments (1)
- e+e− annihilation (1)
- ectosomes (1)
- electron-positron collision (1)
- exosomes (1)
- extracellular vesicles (1)
- guidelines (1)
- hadron spectroscopy (1)
- hadronic events (1)
- helicity amplitude analysis (1)
- inclusive J/ψ decays (1)
- luminosity (1)
- microparticles (1)
- microvesicles (1)
- minimal information requirements (1)
- number of J/ψ events (1)
- reproducibility (1)
- rigor (1)
- spectra (1)
- standardization (1)
- tetraquark (1)
- trigger efficiency (1)
- Λ+c baryon (1)
- Σ hyperon (1)
- √sN N = 2.76 TeV (1)
Institute
- Physik (362)
- Frankfurt Institute for Advanced Studies (FIAS) (130)
- Informatik (106)
- Informatik und Mathematik (3)
- Georg-Speyer-Haus (1)
- Medizin (1)
ϒ production in p–Pb interactions is studied at the centre-of-mass energy per nucleon–nucleon collision √sNN = 8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals 2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, down to zero transverse momentum. In this work, results on the ϒ(1S) production cross section as a function of rapidity and transverse momentum are presented. The corresponding nuclear modification factor shows a suppression of the ϒ(1S) yields with respect to pp collisions, both at forward and backward rapidity. This suppression is stronger in the low transverse momentum region and shows no significant dependence on the centrality of the interactions. Furthermore, the ϒ(2S) nuclear modification factor is evaluated, suggesting a suppression similar to that of the ϒ(1S). A first measurement of the ϒ(3S) has also been performed. Finally, results are compared with previous ALICE measurements in p–Pb collisions at √sNN = 5.02 TeV and with theoretical calculations.
Measurements of K∗(892)0 and φ(1020) resonance production in Pb–Pb and pp collisions at √sNN = 5.02 TeV with the ALICE detector at the Large Hadron Collider are reported. The resonances are measured at midrapidity (|y| < 0.5) via their hadronic decay channels and the transverse momentum (pT) distributions are obtained for various collision centrality classes up to pT = 20 GeV/c. The pT-integrated yield ratio K∗(892)0/K in Pb–Pb collisions shows significant suppression relative to pp collisions and decreases towards more central collisions. In contrast, the φ(1020)/K ratio does not show any suppression. Furthermore, the measured K∗(892)0/K ratio in central Pb–Pb collisions is significantly suppressed with respect to the expectations based on a thermal model calculation, while the φ(1020)/K ratio agrees with the model prediction. These measurements are an experimental demonstration of rescattering of K∗(892)0 decay products in the hadronic phase of the collisions. The K∗(892)0/K yield ratios in Pb–Pb and pp collisions are used to estimate the time duration between chemical and kinetic freeze-out, which is found to be ∼ 4–7 fm/c for central collisions. The pT-differential ratios of K∗(892)0/K, φ(1020)/K, K∗(892)0/π , φ(1020)/π , p/K∗(892)0 and p/φ(1020) are also presented for Pb–Pb and pp collisions at √sNN = 5.02 TeV. These ratios show that the rescattering effect is predominantly a low-pT phenomenon.
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.
The production of Z0 bosons at large rapidities in Pb–Pb collisions at √sNN = 5.02 TeV is reported. Z0 candidates are reconstructed in the dimuon decay channel (Z0 → μ+ μ−), based on muons selected with pseudo-rapidity −4.0 < η < −2.5 and pT > 20 GeV/c. The invariant yield and the nuclear modification factor, RAA, are presented as a function of rapidity and collision centrality. The value of RAA for the 0–20% central Pb–Pb collisions is 0.67 ± 0.11 (stat.) ± 0.03 (syst.) ± 0.06 (corr. syst.), exhibiting a deviation of 2.6σ from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σ in the 0–90% centrality class and by 3σ in the 0–20% central collisions.