2007/12/26 by S. I. Serednyakov, Serednyakov, S. I.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · doi:10.48550/arxiv.0712.4114
openalex publication_date 2007/12/26 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
New Babar results on exclusive e+e- -> hadrons reactions at low c.m. energy with a baryon-antibaryon or KK pair in the final state are presented. Cross sections are measured using the initial state radiation technique from the threshold up to 4--5 GeV. From the measured e+e- -> proton\antiproton, Lambda\Lbar, Sigma0\Sigbar0, Lambda\Sigbar0(Sigma0\Lbar) cross sections we derive effective baryon form factors and compare them with predictions. We measure the KKπ(η), K+K-ππ, K+K-3π, K+K-4π, K+K-K+K- final states and also study their internal structure. A new Y(2175) state is observed in e+e- -> K+K-f0(980), with f0→ππ. The total measured e+e- annihilation cross section into final states including strange baryons or strange mesons is estimated to be 10% of the full hadronic cross section.