A search for the decay $B^{+}\to K^{+}\nu \bar{\nu }$

B. Aubert, BABAR Collaboration

We search for the rare flavor-changing neutral-current decay $B^{+}\to K^{+}\nu \bar{\nu }$ in a data sample of 82 fb${}^{-1}$ collected with the {\sl BABAR} detector at the PEP-II B-factory.…