Refine
Year of publication
Language
- English (183)
Has Fulltext
- yes (183)
Is part of the Bibliography
- no (183)
Keywords
- BESIII (8)
- e +-e − Experiments (5)
- LHC (4)
- Particle and Resonance Production (4)
- Polarization (3)
- Spectroscopy (3)
- ALICE (2)
- ALICE experiment (2)
- Branching fraction (2)
- Branching fractions (2)
- Charm Physics (2)
- Elastic scattering (2)
- Electroweak Interaction (2)
- Hadronic decays (2)
- Initial state radiation (2)
- Lepton colliders (2)
- RHIC (2)
- pp collisions (2)
- 900 GeV (1)
- B-slope (1)
- Beauty production (1)
- Bhabha (1)
- Charm quark spatial diffusion coefficient (1)
- Charmed mesons (1)
- Charmonia (1)
- Charmonium (1)
- Coalescence (1)
- Cold nuclear matter effects (1)
- Collectivity (1)
- Comparison with QCD (1)
- Correlation (1)
- Covariance matrix (1)
- Critical point (1)
- Cross section (1)
- D meson (1)
- Deuteron production (1)
- Diffraction (1)
- Electromagnetic form factor (1)
- Electromagnetic form factors (1)
- Elliptic flow (1)
- Entomology (1)
- Experimental nuclear physics (1)
- Experimental particle physics (1)
- Flavour Physics (1)
- Flow (1)
- Form factors (1)
- Hadron production (1)
- Hadronic cross section (1)
- Heavy Ion Experiments (1)
- Heavy Quark Production (1)
- Heavy flavor production (1)
- Heavy flavour production (1)
- Heavy-Ion Collision (1)
- Heavy-flavor decay electron (1)
- Heavy-ion (1)
- Heavy-ion collisions (1)
- Higher moments (1)
- Hyperons (1)
- Inclusive branching fraction (1)
- Inclusive spectra (1)
- Invasive plants and animals (1)
- J/ψ suppression (1)
- K0S (1)
- Mid-rapidity (1)
- Multi-strange baryons (1)
- Muon anomaly (1)
- Nonflow (1)
- PYTHIA (1)
- Particle decays (1)
- Phylogenomics (1)
- Pion form factor (1)
- Population genetics (1)
- Proton (1)
- Proton–proton (1)
- Proton–proton collisions (1)
- Quantum chromodynamics (1)
- Radiative decay (1)
- STAR (1)
- Semi-leptonic decays (1)
- Shear viscosity (1)
- Single electrons (1)
- Single muons (1)
- Spin alignment (1)
- Techniques Electromagnetic calorimeters (1)
- Thermal model (1)
- Transverse momentum (1)
- dimuon (1)
- distribution (1)
- e+e− Experiments (1)
- hadronic events (1)
- origin (1)
- pathway (1)
- rate of introduction (1)
- spectra (1)
- trigger efficiency (1)
- Λ+c baryon (1)
- Σ hyperon (1)
- ψ(3686) (1)
Institute
- Physik (149)
- Frankfurt Institute for Advanced Studies (FIAS) (45)
- Informatik (13)
- Biowissenschaften (1)
Using an 𝑒+𝑒− collision data sample of (27.08±0.14)×108 𝜓(3686) events collected by the BESIII detector, we report the first observation of 𝜒𝑐𝐽→Ω−¯Ω+ (𝐽=0, 1, 2) decays with significances of 5.6𝜎, 6.4𝜎, and 18𝜎, respectively, where the 𝜒𝑐𝐽 mesons are produced in the radiative 𝜓(3686) decays. The branching fractions are determined to be ℬ(𝜒𝑐0→Ω−¯Ω+) = (3.51±0.54±0.29)×10−5, ℬ(𝜒𝑐1→Ω−¯Ω+)=(1.49±0.23±0.10)×10−5, and ℬ(𝜒𝑐2→Ω−¯Ω+)=(4.52±0.24±0.18)×10−5, where the first and second uncertainties are statistical and systematic, respectively.
Search for the reaction channel e⁺e⁻ → ηcηπ⁺π⁻ at center-of-mass energies from 4.23 to 4.60 GeV
(2021)
Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider, we search for the process 𝑒+𝑒−→𝜂𝑐𝜂𝜋+𝜋−. The search is performed using five large datasets recorded at center-of-mass energies of 4.23, 4.26, 4.36, 4.42, and 4.60 GeV. The 𝜂𝑐 meson is reconstructed in 16 exclusive decay modes. No signal is observed in the 𝜂𝑐 mass region at any center-of-mass energy. The upper limits on the reaction cross sections are determined to be 6.2, 10.8, 27.6, 22.6 and 23.7 pb at the 90% confidence level at the center-of-mass energies listed above.
A partial-wave analysis of the decay 𝐽/𝜓→𝐾+𝐾−𝜋0 has been made using (223.7±1.4)×106 𝐽/𝜓 events collected with the BESIII detector in 2009. The analysis, which is performed within the isobar-model approach, reveals contributions from 𝐾*2(1430)±, 𝐾*2(1980)± and 𝐾*4(2045)± decaying to 𝐾±𝜋0. The two latter states are observed in 𝐽/𝜓 decays for the first time. Two resonance signals decaying to 𝐾+𝐾− are also observed. These contributions cannot be reliably identified and their possible interpretations are discussed. The measured branching fraction 𝐵(𝐽/𝜓→𝐾+𝐾−𝜋0) of (2.88±0.01±0.12)×10−3 is more precise than previous results. Branching fractions for the reported contributions are presented as well. The results of the partial-wave analysis differ significantly from those previously obtained by BESII and BABAR.