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Suchergebnisse

1641. Search for invisible decays of a dark photon using e+e- annihilation data at BESIII

1642. Study of η(1405)/η(1475) in J/\psi \to \gamma {K}_S^0{K}_S^0{\pi}^0 decay

1643. Improved measurement of the absolute branching fraction of inclusive semileptonic ?c plus decay

1644. Evidence for the ηc(2S) → π+π-η decay

1645. Measurement of e+e−→ϕη′ cross sections at center-of-mass energies between 3.508 and 4.600 GeV

1646. Measurements of the Electric and Magnetic Form Factors of the Neutron for Timelike Momentum Transfer

1647. Observation of a New X(3872) Production Process e+ e-? ?X(3872)

1648. First direct measurement of the absolute branching fraction of Σ+ → Λe+υe

1649. Helicity amplitude analysis of χcJ → φφ

1650. Measurements of Normalized Differential Cross Sections of Inclusive π0 and K0S Production in e plus e- Annihilation at Energies from 2.2324 to 3.6710 GeV