Measurement of K+ ---> pi0 pi0 e+ nu (K00(E4)) decay using stopped positive kaons

Collaboration
Aug, 2004
10 pages
Published in:
  • Phys.Rev.D 70 (2004) 037101
e-Print:
Experiments:

Citations per year

200520092013201720212310
Abstract: (arXiv)
The K+π0π0e+νK^+ \to \pi^0 \pi^0 e^+ \nu (Ke400K_{e4}^{00}) decay has been measured with stopped positive kaons for a data sample of 216 events. A comparison of the observed spectra with a Monte Carlo simulation determined the Ke400K_{e4}^{00} form factor. The results are compatible with the K+π+πe+νK^+ \to \pi^+ \pi^- e^+ \nu data, as estimated from the ΔI=1/2\Delta I=1/2 rule. We also established that the Ke400K_{e4}^{00} channel can be used to determine the π\pi-π\pi scattering lengths.
  • 13.20.Eb
  • 13.75.Lb
  • K+: semileptonic decay
  • at rest
  • pi0: pair production
  • decay: form factor
  • isospin: selection rule
  • pi pi: scattering length
  • experimental results
  • KEK PS