Exclusive heavy meson pair production by $\gamma \gamma$ collision in heavy quark effective theory

Abstract

The spin and flavor symmetries of the heavy quark effective theory are employed to discuss the exclusive cross sections for pair production of heavy mesons in photon-photon collision. The ratios of the exclusive cross sections for heavy mesons are obtained explicitly and the validity of results is discussed.

Comments: 10pages (LaTex) (two figures, available on request), SNUTP 92-57