2004/05/07 by NA48 Collaboration, J. R. Batley, R.S. Dosanjh +98
Chemistry · Physics and Astronomy · #Analytical Chemistry (journal) #Branching (polymer chemistry) #Branching fraction #Chemistry #Chromatography #Detector #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1016/j.physletb.2004.05.026
published as Phys.Lett.B595:75-85,2004 · 12 pages, 7 figures
arxiv created 2004/05/07 · openalex publication_date 2004/06/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The KL→π±π0e∓νe(ν̄e) decay was investigated with the NA48 detector at CERN SPS using a beam of long-lived neutral kaons. The branching ratio Br(KL→π±π0e∓νe(ν̄e))=(5.21±0.07stat±0.09syst)×10−5 was fixed from a sample of 5464 events with 62 background events. The form factors f̄s, f̄p, λg and h̄ were found to be in agreement with previous measurements but with higher accuracy. The coupling parameter of the chiral Lagrangian L3=(−4.1±0.2)×10−3 was evaluated from the data.