Light Mesons from Heavy B and Hyperon Decays

Abstract

Decays of heavy mesons and of heavy hyperons are used to provide tests of the standard model and information about new mixing schemes for the $\eta$ and ${\eta }^{{}^{\prime }}$ mesons. These include the two body decays $B_s\to J/\psi M$ and $B_d\to J/\psi M$, $B\to \eta ({\eta }^{{}^{\prime }})K(K^{\ast })$ and ${\Lambda }_b\to \Lambda \eta ({\eta }^{{}^{\prime }})$, semileptonic $D$ decays, and properties of radially excited mesons.

Comments: Four pages. Talk given at the Fifth International Conference on Hyperons, Charm and Beauty Hadrons, Vancouver, BC, Canada, July 25-29, 2002