Multiplicities in lepton-hadron processes

The average multiplicity in deep inelastic electro- and neutrinoproduction at large ω(ω∼s/Q2 + 1) is related in Feynman's version of the parton model to the average multiplicities in high-energy electron-positron annihilation and hadron-hadron scattering. The relation is: 〈n(s, Q2)〉eP,νP ∼ Ce+e−ln(Q2M1⊥2) + Ch ln(ω − 1), where Ce+ e− and Ch are, respectively, the coefficients of ln(s/M1⊥2) in the multiplicities from e+-e− and P-P in to hadrons, and M1⊥ is an average transverse mass.