VMD meaning in Academic & Science ?

In physics, vector meson dominance (VMD) was a model developed by J. J. Sakurai in the 1960s before the introduction of quantum chromodynamics to describe interactions between energetic photons and hadronic matter.

In particular, the hadronic components of the physical photon consist of the lightest vector mesons, ρ {\displaystyle \rho } , ω {\displaystyle \omega } and ϕ {\displaystyle \phi } . Therefore, interactions between photons and hadronic matter occur by the exchange of a hadron between the dressed photon and the hadronic target.