# Search for the decay $K_{s} \to \pi^{0}e^{+}e^{-}$

Abstract : A search for the decay $\kspiee$ has been made using the NA48 detector at the CERN SPS. Using data collected in 1999 during a 40-hour run with a high-intensity $\ks$ beam, an upper limit for the branching fraction ${\rm B}(\kspiee) 1.4 \times 10^{-7}$ at 90\% confidence level has been obtained. %Extrapolating this limit to the full phase-space %assuming the matrix element %model described above~\cite{bib:ambrosio}, %we find an upper limit of %${\cal B}(\kspiee) 6.5 \times 10^{-8}$ %at 90\% confidence level has been obtained
Document type :
Journal articles

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Submitted on : Tuesday, September 18, 2001 - 9:58:34 AM
Last modification on : Tuesday, December 22, 2020 - 12:26:05 PM

### Identifiers

• HAL Id : in2p3-00012200, version 1

### Citation

A. Lai, D. Marras, R. Batley, A. Bevan, R S. Dosanjh, et al.. Search for the decay $K_{s} \to \pi^{0}e^{+}e^{-}$. Physics Letters B, Elsevier, 2001, 514, pp.253-262. ⟨in2p3-00012200⟩

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