English

Measurement of $K^+ \to \pi^0 \pi^0 e^+ \nu$ ($K_{e4}^{00}$) decay using stopped positive kaons

High Energy Physics - Experiment 2008-11-26 v1

Abstract

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.

Keywords

Cite

@article{arxiv.hep-ex/0408098,
  title  = {Measurement of $K^+ \to \pi^0 \pi^0 e^+ \nu$ ($K_{e4}^{00}$) decay using stopped positive kaons},
  author = {S. Shimizu and K. Horie and M. Aliev and Y. Asano and T. Baker and P. Depommier and M. Hasinoff and Y. Igarashi and J. Imazato and A. P. Ivashkin and M. M. Khabibullin and A. N. Khotjantsev and Y. G. Kudenko and A. Levchenko and G. Y. Lim and J. A. Macdonald and O. V. Mineev and C. Rangacharyulu and S. Sawada},
  journal= {arXiv preprint arXiv:hep-ex/0408098},
  year   = {2008}
}

Comments

about 10 pages, 3figures