The paper by Sidney D. Drell and Tung-Mow Yan explores the production of large mass lepton pairs in hadron-hadron collisions at high energies, focusing on the limiting region where the squared invariant mass of the lepton pair, \( Q^2 \), is finite while the total energy of the collision, \( s \), tends to infinity. The authors use a parton model to analyze the process and discuss its scaling properties and connections to deep inelastic electron scattering. They predict a rapid decrease in the cross section as \( Q^2/s \) approaches 1, reflecting the observed rapid fall-off of the inelastic scattering structure function \( \nu W_2 \) near threshold. The paper also examines the angular distribution of the vector \( \mathbf{q} \), the polarization of the virtual photon, and the implications of including "wee" parton exchanges in the model. The results highlight the independence of nontrivial Bjorken scaling behavior and the validity of the impulse approximation from the total cross section for hadrons at high energies.The paper by Sidney D. Drell and Tung-Mow Yan explores the production of large mass lepton pairs in hadron-hadron collisions at high energies, focusing on the limiting region where the squared invariant mass of the lepton pair, \( Q^2 \), is finite while the total energy of the collision, \( s \), tends to infinity. The authors use a parton model to analyze the process and discuss its scaling properties and connections to deep inelastic electron scattering. They predict a rapid decrease in the cross section as \( Q^2/s \) approaches 1, reflecting the observed rapid fall-off of the inelastic scattering structure function \( \nu W_2 \) near threshold. The paper also examines the angular distribution of the vector \( \mathbf{q} \), the polarization of the virtual photon, and the implications of including "wee" parton exchanges in the model. The results highlight the independence of nontrivial Bjorken scaling behavior and the validity of the impulse approximation from the total cross section for hadrons at high energies.