New experimental data for the decays f → μ+μ− and f → π+π− from SND detector

1999/10/31 by M. N. Achasov, М. Н. Ачасов, V. M. Aulchenko +50
Physics and Astronomy · #Black Holes and Theoretical Physics #Branching (polymer chemistry) #Branching fraction #Collider #Detector #Electron–positron annihilation #Hadron #Materials science #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Resonance (particle physics) #hep-ex

paper · pdf · doi:10.1016/s0375-9474(00)00274-8

published as Nucl.Phys.A675:320c-324c,2000 · 5 pages, 4 figures, talk given at 8th International Conference on Hadron Spectroscopy (HADRON 99), Beijing, China, 24-28 Aug 1999

arxiv created 2000/01/12 · openalex publication_date 2000/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The processes e⁺e^-→μ⁺μ^- and e⁺e^-→π⁺π^- have been studied with SND detector at VEPP-2M e⁺e^- collider in the vicinity of ϕ(1020) resonance. The branching ratios B(ϕ→μ⁺μ^-)=(3.30± 0.45± 0.32)× 10^-4 and B(ϕ→π⁺π^-)=(0.71± 0.11± 0.09)× 10^-4 were obtained.

Citations

• Large angle QED processes at e+e− colliders at energies below 3 GeV