Measurement of the absolute branching ratio of the $K^+\to \pi^+ \pi^0 (\gamma)$ decay with the KLOE detector

We have measured the absolute branching ratio of the K+→π+π0(γ) decay, using ∼20 million tagged K+ mesons collected with the KLOE detector at DAΦNE, the Frascati ϕ -factory. Signal counts are obtained from the fit of the distribution of the momentum of the charged decay particle in the kaon rest frame. The result, inclusive of final-state radiation, is BR(K+→π+π0(γ))=0.2065±0.0005stat±0.0008syst .

Note:

13 pages, 2 figures

13.25.Es
e+e- Experiments
Kaon decays
e+e− Experiments
[formula omitted] Experiments
electron positron: colliding beams
Phi(1020): electroproduction
K: pair production
K+: hadronic decay
radiation: final-state interaction

References(0)

Figures(0)

Loading ...

Measurement of the absolute branching ratio of the K+→π+π0(γ)K^+\to \pi^+ \pi^0 (\gamma)K+→π+π0(γ) decay with the KLOE detector

Citations per year

Measurement of the absolute branching ratio of the $K^+\to \pi^+ \pi^0 (\gamma)$ decay with the KLOE detector