A unified approach to resonances and partons: A survey of the problems and accomplishments

A brief survey of the recently proposed unified approach to resonances and partons is presented. A new result is the formula for the mean value of the mass of the parton, $\text{m}\text{= (1 ? ad)M}{}_{\mathrm{n}}$, where a is the average distance between the adjacent hadronic levels, d the radius of the nucleon, and M_n its mass. We also discuss the spacelike states in more detail and give a possible parton model interpretation of this less familiar physical phenomenon.