Search for the decay $D^{0}$ → $e^{+}$ $e^{-}$

Publisher Website

1 April 1988

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 37 (7) , 2023-2025
https://doi.org/10.1103/physrevd.37.2023

Abstract

We report a search for the decay

D^{0}

→

e^{+}

e^{-}

based on a data sample of 9.6

{pb}^{- 1}

collected at the ψ(3770) resonance with the Mark III detector at the SLAC

e^{+}

e^{-}

storage ring SPEAR. We find no evidence for this flavor-changing weak-neutral-current decay and set an upper limit on the branching ratio of B(

D^{0}

→

e^{+}

e^{-}

)<1.3×

10^{- 4}

at the 90% confidence level. This limit constrains various extensions of the standard model.

Keywords

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