Refine
Year of publication
Document Type
- Article (240)
- Preprint (143)
- Working Paper (1)
Language
- English (384)
Has Fulltext
- yes (384)
Is part of the Bibliography
- no (384)
Keywords
- BESIII (14)
- Branching fraction (9)
- e +-e − Experiments (9)
- LHC (7)
- Particle and Resonance Production (6)
- Hadronic decays (5)
- Quarkonium (5)
- Branching fractions (4)
- Lepton colliders (4)
- Quark-Gluon Plasma (4)
- ALICE (3)
- ALICE experiment (3)
- Charm Physics (3)
- Charmed mesons (3)
- Charmonium (3)
- Electroweak interaction (3)
- Exotics (3)
- Hadron-Hadron Scattering (3)
- Initial state radiation (3)
- Jets and Jet Substructure (3)
- Spectroscopy (3)
- e+-e− Experiments (3)
- pp collisions (3)
- Beauty production (2)
- Bhabha (2)
- Charm physics (2)
- Cross section (2)
- Elastic scattering (2)
- Electroweak Interaction (2)
- Hadronic cross section (2)
- Heavy-ion collisions (2)
- Jets (2)
- Leptonic, semileptonic & radiative decays (2)
- Muon anomaly (2)
- Particle decays (2)
- Pion form factor (2)
- Polarization (2)
- QCD (2)
- Single electrons (2)
- 900 GeV (1)
- Angular distribution (1)
- Annihilation (1)
- B-slope (1)
- BESIII detector (1)
- Boosted Jets (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)
- Electromagnetic form factor (1)
- Electromagnetic form factors (1)
- Elliptic flow (1)
- Experimental nuclear physics (1)
- Experimental particle physics (1)
- FOS: Physical sciences (1)
- Femtoscopy (1)
- Flavor changing neutral currents (1)
- Flavor symmetries (1)
- Flavour Physics (1)
- Form factors (1)
- HBT (1)
- Hadron production (1)
- Hadron-Hadron Scattering Heavy (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 production (1)
- High Energy Physics - Experiment (hep-ex) (1)
- Higher moments (1)
- Hyperons (1)
- Inclusive spectra (1)
- Intensity interferometry (1)
- Invisible decays (1)
- Jet Physics (1)
- Jet Substructure (1)
- Mid-rapidity (1)
- Multi-strange baryons (1)
- Neutrinos (1)
- Nuclear modification factor (1)
- PYTHIA (1)
- Particle and resonance production (1)
- Particle phenomena (1)
- Pb–Pb (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)
- Semi-leptonic decays (1)
- Shear viscosity (1)
- Single muons (1)
- Techniques Electromagnetic calorimeters (1)
- Thermal model (1)
- Transverse momentum (1)
- Triple quarkonia (1)
- Vector Boson Production (1)
- Y (4260) (1)
- Y states (1)
- center-of-mass energy (1)
- charmonium-like states (1)
- dimuon (1)
- diphoton (1)
- e+e − annihilation (1)
- e+e⁻ − Experiments (1)
- e+e− Experiments (1)
- e+e− annihilation (1)
- electron-positron collision (1)
- hadron spectroscopy (1)
- hadronic events (1)
- helicity amplitude analysis (1)
- inclusive J/ψ decays (1)
- luminosity (1)
- number of J/ψ events (1)
- spectra (1)
- tetraquark (1)
- trigger efficiency (1)
- Λ+c baryon (1)
- Σ hyperon (1)
- √sN N = 2.76 TeV (1)
Institute
We present the first measurements of femtoscopic correlations between the K0 S and K± particles in pp collisions at √s = 7 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding solely via the a0(980) resonance. The extracted kaon source radius and correlation strength parameters for K0 SK− are found to be equal within the experimental uncertainties to those for K0 SK+. Results of the present study are compared with those from identical-kaon femtoscopic studies also performed with pp collisions at √s = 7 TeV by ALICE andwith a K0 SK± measurement in Pb–Pb collisions at √sNN = 2.76 TeV. Combined with the Pb–Pb results, our pp analysis is found to be compatible with th e interpretation of the a0(980) having a tetraquark structure instead of that of a diquark.
The first measurements of anisotropic flow coefficients vn for mid-rapidity charged particles in Xe–Xe collisions at √sNN = 5.44 TeV are presented. Comparing these measurements to those from Pb–Pb collisions at √sNN = 5.02 TeV, v2 is found to be suppressed for mid-central collisions at the same centrality, and enhanced for central collisions. The values of v3 are generally larger in Xe–Xe than in Pb–Pb at a given centrality. These observations are consistent with expectations from hydrodynamic predictions. When both v2 and v3 are divided by their corresponding eccentricities for a variety of initial state models, they generally scale with transverse density when comparing Xe–Xe and Pb–Pb, with some deviations observed in central Xe–Xe and Pb–Pb collisions. These results assist in placing strong constraints on both the initial state geometry and medium response for relativistic heavy-ion collisions.
First measurement of Λ+c production down to pT = 0 in pp and p-Pb collisions at √𝑠NN = 5.02 TeV
(2023)
The production of prompt +c baryons has been measured at midrapidity in the transverse momentum interval 0 < pT < 1 GeV/c for the first time, in pp and p–Pb collisions at a center-of-mass energy per nucleon-nucleon collision √sNN = 5.02 TeV. The measurement was performed in the decay channel +c → pK0S by applying new decay reconstruction techniques using a Kalman-Filter vertexing algorithm and adopting a machine-learning approach for the candidate selection. The pT -integrated +c production cross sections in both collision systems were determined and used along with the measured yields in Pb–Pb collisions to compute the pT -integrated nuclear modification factors RpPb and RAA of +c baryons, which are compared to model calculations that consider nuclear modification of the parton distribution functions. The +c /D0 baryon-to-meson yield ratio is reported for pp and p–Pb collisions. Comparisons with models that include modified hadronization processes are presented, and the implications of the results on the understanding of charm hadronization in hadronic collisions are discussed. A significant (3.7σ) modification of the mean transverse momentum of + c baryons is seen in p–Pb collisions with respect to pp collisions, while the pT -integrated +c /D0 yield ratio was found to be consistent between the two collision systems within the uncertainties.
The production of the Λ(1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at s√=7 TeV and in p–Pb collisions at sNN−−−√=5.02 TeV for non-single diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay channel Λ(1520) →pK− and the charge conjugate with the ALICE detector. The integrated yields and mean transverse momenta are calculated from the measured transverse momentum distributions in pp and p–Pb collisions. The mean transverse momenta follow mass ordering as previously observed for other hyperons in the same collision systems. A Blast-Wave function constrained by other light hadrons (π, K, K0S, p, Λ) describes the shape of the Λ(1520) transverse momentum distribution up to 3.5 GeV/c in p–Pb collisions. In the framework of this model, this observation suggests that the Λ(1520) resonance participates in the same collective radial flow as other light hadrons. The ratio of the yield of Λ(1520) to the yield of the ground state particle Λ remains constant as a function of charged-particle multiplicity, suggesting that there is no net effect of the hadronic phase in p–Pb collisions on the Λ(1520) yield.