Refine
Year of publication
Document Type
- Article (122)
- Preprint (42)
- Conference Proceeding (1)
- Doctoral Thesis (1)
Has Fulltext
- yes (166)
Is part of the Bibliography
- no (166)
Keywords
- BESIII (11)
- e +-e − Experiments (8)
- Branching fraction (7)
- LHC (6)
- Hadronic decays (4)
- Lepton colliders (4)
- Quarkonium (4)
- ALICE (3)
- Branching fractions (3)
- Charmed mesons (3)
- Electroweak interaction (3)
- Exotics (3)
- Particle and Resonance Production (3)
- e+-e− Experiments (3)
- ALICE experiment (2)
- Charm Physics (2)
- Charm physics (2)
- Electroweak Interaction (2)
- Initial state radiation (2)
- Leptonic, semileptonic & radiative decays (2)
- Particle decays (2)
- QCD (2)
- Spectroscopy (2)
- pp collisions (2)
- 900 GeV (1)
- ADHD (1)
- Affect (1)
- Ambulatory Assessment (1)
- Annihilation (1)
- Artificial Intelligence (1)
- BESIII detector (1)
- Beauty production (1)
- Bhabha (1)
- Biodiversity (1)
- Biodiversity Data (1)
- Biomonitoring (1)
- Born cross section measurement (1)
- Botanical Collections (1)
- CP violation (1)
- Charmonium (1)
- Charmonium (-like) (1)
- Comparison with QCD (1)
- Conservation (1)
- Covariance matrix (1)
- Cross section (1)
- D meson (1)
- Dalitz decay (1)
- Dark photon (1)
- Dark sector (1)
- Digitization (1)
- D⁰ meson (1)
- Electromagnetic form factor (1)
- Electromagnetic form factors (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)
- Hadronic cross section (1)
- Heavy flavor production (1)
- Heavy flavour production (1)
- Heavy-ion collisions (1)
- Herbaria (1)
- High Energy Physics - Experiment (hep-ex) (1)
- Hyperons (1)
- Inclusive spectra (1)
- Intensity interferometry (1)
- Invisible decays (1)
- Mid-rapidity (1)
- Mood (1)
- Multi-strange baryons (1)
- Muon anomaly (1)
- Neutrinos (1)
- Nuclear modification factor (1)
- Ontologies (1)
- PYTHIA (1)
- Particle and resonance production (1)
- Particle phenomena (1)
- Pb–Pb (1)
- Physical activity (1)
- Pion form factor (1)
- Polarization (1)
- Proton (1)
- Proton–proton (1)
- Quantum chromodynamics (1)
- Rare decays (1)
- Research Infrastructure (1)
- Semantics (1)
- Semi-leptonic decays (1)
- Single electrons (1)
- Single muons (1)
- Specialized Information Service (1)
- Säugetiere ; Melatonin ; Biosynthese ; Regulation (1)
- Taxonomy (1)
- Techniques Electromagnetic calorimeters (1)
- Text mining (1)
- Transverse momentum (1)
- Y states (1)
- activation receptors (1)
- amino acids (1)
- aortic stenosis (1)
- bio-ontologies (1)
- biodiversity knowledge base (1)
- cardiac remodeling (1)
- center-of-mass energy (1)
- charmonium-like states (1)
- collaborative feedback (1)
- congenic mice (1)
- dimuon (1)
- e+e − annihilation (1)
- e+e⁻ − Experiments (1)
- educational theory (1)
- electron-positron collision (1)
- faculty development (1)
- hadron spectroscopy (1)
- hadronic events (1)
- heart failure (1)
- helicity amplitude analysis (1)
- inclusive J/ψ decays (1)
- innate lymphoid cells (1)
- intracellular trafficking (1)
- machine learning (1)
- medical education (1)
- medical teacher (1)
- number of J/ψ events (1)
- rats (1)
- specialised information service (1)
- spectra (1)
- tetraquark (1)
- text mining (1)
- trigger efficiency (1)
- Λ+c baryon (1)
- Σ hyperon (1)
- √sN N = 2.76 TeV (1)
Institute
Using 2.93 fb−1 of e+e− collision data taken with the BESIII detector at a center-of-mass energy of 3.773 GeV, the observation of the D0→K1(1270)−e+νe semileptonic decay is presented. The statistical significance of the decay D0→K1(1270)−e+νe is greater than 10σ. The branching fraction of D0→K1(1270)−e+νe is measured to be (1.09±0.13+0.09−0.13±0.12)×10−3. Here, the first uncertainty is statistical, the second is systematic, and the third originates from the assumed branching fraction of K1(1270)−→K−π+π−.
Using 2.93 fb−1 of e+e− collision data taken with the BESIII detector at a center-of-mass energy of 3.773 GeV, the observation of the D0→K1(1270)−e+νe semileptonic decay is presented. The statistical significance of the decay D0→K1(1270)−e+νe is greater than 10σ. The branching fraction of D0→K1(1270)−e+νe is measured to be (1.09±0.13+0.09−0.16±0.12)×10−3. Here, the first uncertainty is statistical, the second is systematic, and the third originates from the assumed branching fraction of K1(1270)−→K−π+π−. The fraction of longitudinal polarization in D0→K1(1270)−e+νe is determined for the first time to be 0.50±0.19stat±0.08syst.
Using 6.32 fb−1 of 𝑒+𝑒− collision data collected by the BESIII detector at the center-of-mass energies between 4.178 and 4.226 GeV, an amplitude analysis of the 𝐷+𝑠→𝐾0𝑆𝐾−𝜋+𝜋+ decays is performed for the first time to determine the intermediate-resonant contributions. The dominant component is the 𝐷+𝑠→𝐾*(892)+¯𝐾*(892)0 decay with a fraction of (40.6±2.9stat±4.9sys)%. Our results of the amplitude analysis are used to obtain a more precise measurement of the branching fraction of the 𝐷+𝑠→𝐾0𝑆𝐾−𝜋+𝜋+ decay, which is determined to be (1.46±0.05stat±0.05sys)%.
In Ref. [1] the BESIII collaboration published a cross section measurement of the process e+e− → π+π− in the energy range between 600 and 900 MeV. In this corrigendum, we report a corrected evaluation of the statistical errors in terms of a fully propagated covariance matrix. The correction also yields a reduced statistical uncertainty for the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, which now reads as aππ,LO μ (600 − 900 MeV) = (368.2 ± 1.5stat ± 3.3syst) × 10−10. The central values of the cross section measurement and of aππ,LO μ , as well as the systematic uncertainties remain unchanged.
We search for an axion-like particle (ALP) a through the process ψ(3686)→π+π−J/ψ, J/ψ→γa, a→γγ in a data sample of (2.71±0.01)×109 ψ(3686) events collected by the BESIII detector. No significant ALP signal is observed over the expected background, and the upper limits on the branching fraction of the decay J/ψ→γa and the ALP-photon coupling constant gaγγ are set at 95% confidence level in the mass range of 0.165≤ma≤2.84GeV/c2. The limits on B(J/ψ→γa) range from 8.3×10−8 to 1.8×10−6 over the search region, and the constraints on the ALP-photon coupling are the most stringent to date for 0.165 ≤ ma ≤ 1.468GeV/c2.
A search for the charged lepton flavor violating decay 𝐽/𝜓→𝑒±𝜏∓ with 𝜏∓→𝜋∓𝜋0𝜈𝜏 is performed with about 10×109 𝐽/𝜓 events collected with the BESIII detector at the BEPCII. No significant signal is observed, and an upper limit is set on the branching fraction ℬ(𝐽/𝜓→𝑒±𝜏∓)<7.5×10−8 at the 90% confidence level. This improves the previously published limit by two orders of magnitude.
he Born cross sections for the process 𝑒+𝑒−→𝜂′𝜋+𝜋− at different center-of-mass energies between 2.00 and 3.08 GeV are reported with improved precision from an analysis of data samples collected with the BESIII detector operating at the BEPCII storage ring. An obvious structure is observed in the Born cross section line shape. Fit as a Breit-Wigner resonance, it has a statistical significance of 6.3𝜎 and a mass and width of 𝑀=(2111±43±25) MeV/𝑐2 and Γ=(135±34±30) MeV, where the uncertainties are statistical and systematic, respectively. These measured resonance parameters agree with the measurements of BABAR in 𝑒+𝑒−→𝜂′𝜋+𝜋− and BESIII in 𝑒+𝑒−→𝜔𝜋0 within two standard deviations.
Using a data sample of (448.1±2.9)×106 𝜓(3686) decays collected at an 𝑒+𝑒− center-of-mass energy of 3.686 GeV by the BESIII detector at Beijing Electron Positron Collider II, we report an observation of the hindered electromagnetic Dalitz decay 𝜓(3686)→𝑒+𝑒−𝜂𝑐 with a significance of 7.9𝜎. The branching fraction is determined to be ℬ(𝜓(3686)→𝑒+𝑒−𝜂𝑐)=(3.77±0.40stat±0.18syst)×10−5, agreeing well with the prediction of the vector meson dominance model. This is the first measurement of the electromagnetic Dalitz transition between the 𝜓(3686) and the 𝜂𝑐, which provides new insight into the electromagnetic properties of this decay, and offers new opportunities to measure the absolute branching fractions of 𝜂𝑐 decays.
Using a sample of 1.31×109 𝐽/𝜓 events collected with the BESIII detector, we perform a study of 𝐽/𝜓→𝛾𝜂𝜂𝜂′ to search for the 𝑋(2370) and 𝜂𝑐 in the 𝜂𝜂𝜂′ invariant mass distribution. No significant signal for the 𝑋(2370) is observed, and we set an upper limit for the product branching fraction of ℬ(𝐽/𝜓→𝛾𝑋(2370)·ℬ(𝑋(2370)→𝜂𝜂𝜂′)<9.2×10−6 at the 90% confidence level. A clear 𝜂𝑐 signal is observed for the first time, yielding a product branching fraction of ℬ(𝐽/𝜓→𝛾𝜂𝑐)·ℬ(𝜂𝑐→𝜂𝜂𝜂′)=(4.86±0.62(stat)±0.45(sys))×10−5.