The quark potential model for vector mesons and their decay constants

Abstract

The relativistic quark potential model (QPM) is developed for describingvector mesons and their leptonic decays. The new representation Salpeter equation for vector mesons is proposed. Studying the $τ\toρν$ decay theexpression for $ρ$-meson leptonic decay constant $f_ρ$ isobtained. It is shown that quark model describes on a satisfactory level both theconstant $f_ρ$