2004/09/02 by J. R. Batley, G. Kalmus, C. Lazzeroni +97 · 47 citations
Mathematics · Physics and Astronomy · #Algorithm #High-Energy Particle Collisions Research #Mathematics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · open access · doi:10.1016/j.physletb.2004.08.058
published in Physics Letters B 599(3-4), 197-211 (Elsevier BV) · 19 pages, 8 figures, 4 tables. To be published in Physics Letters B
arxiv created 2004/09/02 · openalex publication_date 2004/09/14 · arxiv updated 2009/12/01 · openalex created_date 2020/02/24 · openalex updated_date 2026/08/05
A search for the decay KS→π0μ+μ− has been made by the NA48/1 Collaboration at the CERN SPS accelerator. The data were collected during 2002 with a high-intensity KS beam. Six events were found with a background expectation of 0.22−0.11+0.18 events. Using a vector matrix element and unit form factor, the measured branching ratio is B(KS→π0μ+μ−)=[2.9−1.2+1.5(stat)±0.2(syst)]×10−9.