Refine
Year of publication
Language
- English (141)
Has Fulltext
- yes (141)
Is part of the Bibliography
- no (141)
Keywords
- BESIII (12)
- Branching fraction (7)
- e +-e − Experiments (7)
- LHC (5)
- Hadronic decays (4)
- Quarkonium (4)
- Branching fractions (3)
- Electroweak interaction (3)
- Exotics (3)
- Initial state radiation (3)
- Lepton colliders (3)
- Particle and Resonance Production (3)
- e+-e− Experiments (3)
- ALICE (2)
- ALICE experiment (2)
- Bhabha (2)
- Charm physics (2)
- Charmed mesons (2)
- Charmonium (2)
- Cross section (2)
- Hadronic cross section (2)
- Leptonic, semileptonic & radiative decays (2)
- Muon anomaly (2)
- Pion form factor (2)
- QCD (2)
- Spectroscopy (2)
- pp collisions (2)
- Angular distribution (1)
- Annihilation (1)
- BESIII detector (1)
- Beauty production (1)
- Born cross section measurement (1)
- CP violation (1)
- Charm Physics (1)
- Charmonium (-like) (1)
- Comparison with QCD (1)
- Covariance matrix (1)
- Cross section measurements (1)
- D meson (1)
- D0 and D+ mesons (1)
- Dalitz decay (1)
- Dark photon (1)
- Dark sector (1)
- D⁰ meson (1)
- Electromagnetic form factor (1)
- Electromagnetic form factors (1)
- Electroweak Interaction (1)
- Experimental nuclear physics (1)
- Experimental particle physics (1)
- Femtoscopy (1)
- Flavor changing neutral currents (1)
- Flavor symmetries (1)
- Form factors (1)
- HBT (1)
- Hadron production (1)
- Hadrons (1)
- Heavy flavor production (1)
- Heavy flavour production (1)
- Heavy-ion collisions (1)
- Hyperons (1)
- Inclusive spectra (1)
- Intensity interferometry (1)
- Invisible decays (1)
- Mid-rapidity (1)
- Multi-strange baryons (1)
- Neutrinos (1)
- Nuclear modification factor (1)
- Particle and resonance production (1)
- Particle decays (1)
- Particle phenomena (1)
- Pb–Pb (1)
- Polarization (1)
- Proton (1)
- Proton–proton (1)
- Quantum chromodynamics (1)
- R value (1)
- Rare decays (1)
- Single electrons (1)
- Single muons (1)
- Techniques Electromagnetic calorimeters (1)
- Triple quarkonia (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− 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)
- Σ hyperon (1)
- √sN N = 2.76 TeV (1)
Institute
- Physik (141)
- Frankfurt Institute for Advanced Studies (FIAS) (18)
- Informatik (18)
Search for the lepton number violating decay Σ⁻ → pe⁻e⁻ and the rare inclusive decay Σ⁻ → Σ⁺X
(2021)
Using a data sample of (1310.6±7.0)×106 𝐽/𝜓 events taken with the BESIII detector at the center-of-mass energy of 3.097 GeV, we search for the first time for the lepton number violating decay Σ−→𝑝𝑒−𝑒− and the rare inclusive decay Σ−→Σ+𝑋, where 𝑋 denotes any possible particle combination. The Σ− candidates are tagged in 𝐽/𝜓→¯Σ(1385)+Σ− decays. No signal candidates are found, and the upper limits on the branching fractions at the 90% confidence level are determined to be ℬ(Σ−→𝑝𝑒−𝑒−)<6.7×10−5 and ℬ(Σ−→Σ+𝑋)<1.2×10−4.