Refine
Year of publication
Language
- English (560)
Has Fulltext
- yes (560)
Is part of the Bibliography
- no (560)
Keywords
- Heavy Ion Experiments (13)
- Hadron-Hadron scattering (experiments) (11)
- BESIII (9)
- Branching fraction (5)
- Heavy-ion collision (5)
- Hadron-Hadron Scattering (4)
- Electroweak interaction (3)
- Quarkonium (3)
- Absolute branching fraction (2)
- Branching fractions (2)
- Charmonium (2)
- Cross section (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Hadronic decays (2)
- Initial state radiation (2)
- Jets (2)
- Leptonic, semileptonic & radiative decays (2)
- Particle and Resonance Production (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- Quark-Gluon Plasma (2)
- decays (2)
- e +-e − Experiments (2)
- Angular distribution (1)
- Annihilation (1)
- Boosted Jets (1)
- Charm physics (1)
- Charmed baryon (1)
- Charmed mesons (1)
- Covariance matrix (1)
- D meson (1)
- Dalitz decay (1)
- D⁰ meson (1)
- Electromagnetic amplitude (1)
- Electromagnetic form factor (1)
- Electromagnetic form factors (1)
- Exotics (1)
- FOS: Physical sciences (1)
- Flavor changing neutral currents (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hadronic cross section (1)
- Hadronization (1)
- Heavy Ion Experiment (1)
- Heavy ion collisions (1)
- Heavy-Ion Collision (1)
- High Energy Physics - Experiment (hep-ex) (1)
- Jet Physics (1)
- Jet Substructure (1)
- Jets and Jet Substructure (1)
- Lepton colliders (1)
- Lepton-Nucleon Scattering (experiments) (1)
- Muon anomaly (1)
- Net-charge correlations (1)
- Net-charge fluctuations (1)
- Neutrinos (1)
- Particle decays (1)
- Particle phenomena (1)
- Phase (1)
- Pion form factor (1)
- Properties of Hadrons (1)
- Proton (1)
- QCD (1)
- Quark Production (1)
- Rare decays (1)
- Relativistic heavy-ion collisions (1)
- Spectroscopy (1)
- Strong amplitude (1)
- Triple quarkonia (1)
- Vector Boson Production (1)
- W-exchange (1)
- bibliometric analysis (1)
- branching fractions (1)
- charmed baryon (1)
- child abuse and neglect (1)
- child maltreatment (1)
- decay (1)
- e+-e− Experiments (1)
- e+e− annihilation (1)
- global mapping (1)
- heavy ion experiments (1)
- quark gluon plasma (1)
- scientometrics (1)
- Λc⁺ (1)
- Σ hyperon (1)
Institute
- Physik (556)
- Frankfurt Institute for Advanced Studies (FIAS) (391)
- Informatik (371)
- Informatik und Mathematik (3)
- Medizin (1)
We report a measurement of the observed cross sections of e+ e− → J/ψX based on 3.21 fb − 1 of data accumulated at energies from 3.645 to 3.891 GeV with the BESIII detector operated at the BEPCII collider. In analysis of the cross sections, we measured the decay branching fractions of B(ψ(3686) → J/ψX) = (64.4 ± 0.6 ± 1.6)% and B(ψ(3770) → J/ψX) = (0.5 ± 0.2 ± 0.1)% for the first time. The energy-dependent line shape of these cross sections cannot be well described by two Breit-Wigner (BW) amplitudes of the expected decays ψ (3686) → J/ψX and ψ(3770) → J/ψX. Instead, it can be better described with one more BW amplitude of the decay R(3760)→ J/ψX. Under this assumption, we extracted the R (3760) mass M R (3760 ) = 3766.2 ± 3.8 ± 0.4 MeV/c2, total width Γ tot R ( 3760 ) = 22.2 ± 5.9 ± 1.4 MeV, and product of leptonic width and decay branching fraction
ΓeeR(3760) B[R(3760) → J/ψX] = (79.4 ± 85.5 ± 11.7) eV. The significance of the R(3760) is 5.3σ. The first uncertainties of these measured quantities are from fits to the cross sections and second systematic.
Using e+e− collision data, corresponding to an integrated luminosity of 892pb−1 collected at center-of-mass energies from 4.84 to 4.95\,GeV with the BESIII detector, we search for the process e+e−→K+K−ψ(3770) by reconstructing two charged kaons and one D meson from ψ(3770). No significant signal of e+e−→K+K−ψ(3770) is found and the upper limits of the Born cross sections are reported at 90\% confidence level.
Using e+e− collision data, corresponding to an integrated luminosity of 892pb−1 collected at center-of-mass energies from 4.84 to 4.95\,GeV with the BESIII detector, we search for the process e+e−→K+K−ψ(3770) by reconstructing two charged kaons and one D meson from ψ(3770). No significant signal of e+e−→K+K−ψ(3770) is found and the upper limits of the Born cross sections are reported at 90\% confidence level.
Using a sample of 448.1×106 ψ(2S) events collected with the BESIII detector, we perform a study of the decay J/ψ→K+K− via ψ(2S)→π+π−J/ψ.
The branching fraction of J/ψ→K+K− is determined to be BK+K−=(3.072±0.023(stat.)±0.050(syst.))×10−4, which is consistent with previous measurements but with significantly improved precision.
Using 7.33 fb−1 of e+e− collision data collected by the BESIII detector at center-of-mass energies between 4.128 and 4.226~GeV, we observe for the first time the decay D±s→ωπ±η with a statistical significance of 7.6σ. The measured branching fraction of this decay is (0.54±0.12±0.04)%, where the first uncertainty is statistical and the second is systematic.
The Born cross sections of the e+e− → D*+D*− and e+e− → D*+D− processes are measured using e+e− collision data collected with the BESIII experiment at center-of-mass energies from 4.085 to 4.600 GeV, corresponding to an integrated luminosity of 15.7 fb−1. The results are consistent with and more precise than the previous measurements by the Belle, Babar and CLEO collaborations. The measurements are essential for understanding the nature of vector charmonium and charmonium-like states.
By using 6.32 fb−1 of data collected with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we perform an amplitude analysis of the decay D+s ! K0S + 0 and determine the relative fractions and phase differences of different intermediate processes, which include K0S (770)+, K0S (1450)+, K (892)0 +, K (892)+ 0, and K (1410)0 +. With the detection efficiency based on the amplitude analysis results, the absolute branching fraction is measured to be B(D+s ! K0S + 0) = (5.43 ± 0.30stat ± 0.15syst) × 10−3.
The process e+e−→ϕη is studied at 22 center-of-mass energy points (√s) between 2.00 and 3.08 GeV using 715 pb−1 of data collected with the BESIII detector. The measured Born cross section of e+e−→ϕη is found to be consistent with BABAR measurements, but with improved precision. A resonant structure around 2.175 GeV is observed with a significance of 6.9σ with mass (2163.5±6.2±3.0) MeV/c2 and width (31.1+21.1−11.6±1.1) MeV, where the first uncertainties are statistical and the second are systematic.
Using a sample of (10.09±0.04)×109 J/ψ events collected with the BESIII detector, a partial wave analysis of J/ψ→γη′η′ is performed.The masses and widths of the observed resonances and their branching fractions are reported. The main contribution is from J/ψ→γf0(2020) with f0(2020)→η′η′, which is found with a significance of greater than 25σ. The product branching fraction B(J/ψ → γf0(2020))⋅B(f0(2020) → η′η′ is measured to be (2.63±0.06(stat.) + 0.31−0.46(syst.))×10−4.
We present the first experimental search for the rare charm decay D0→π0ν¯ν. It is based on an e+e− collision sample consisting of 10.6×10^6 pairs of D0¯D0 mesons collected by the BESIII detector at √s=3.773 GeV, corresponding to an integrated luminosity of 2.93 fb^−1. A data-driven method is used to ensure the reliability of the background modeling. No significant D0→π0ν¯ν signal is observed in data and an upper limit of the branching fraction is set to be 2.1×10^-4 at the 90% confidence level. This is the first experimental constraint on charmed-hadron decays into dineutrino final states.