\Omb \rightarrow \Omc , \Omc ^* $ transitions: Model-independent bounds on invariant form factors

Abstract

In this note we report some model-independent bounds involving transition form factors for $\text{Omb}\to \text{Omc}$ and $\text{Omb}\to {\text{Omc}}^{\ast }$ and the nonperturbative matrix elements of the $\text{Omb}$ system. They are derived by using operator product expansion (OPE) in Heavy Quark Effective Theory .

Comments: Latex, 7 pages