Search for long-lived scalar particles in $B^{+}\to K^{+}\chi ({\mu }^{+}{\mu }^{-})$ decays

LHCb collaboration, R. Aaij, B. Adeva +764

A search for a long-lived scalar particle $\chi$ is performed, looking for the decay $B^{+}\to K^{+}\chi$ with $\chi \to {\mu }^{+}{\mu }^{-}$ in $pp$ collision data corresponding to an integrated lumin…