Point-like configurations in hadrons and nuclei and deep inelastic reactions with leptons: EMC and EMC-like effects

Abstract

We estimate the suppression of point-like configurations in bound nucleons which can well explain the EMC effect at x>0.3, leads to small (∼ 1–3%) nucleon swelling, small (∼ 3%) non-nucleon components in the nucleus wave function, noticeably increases the magnetic moment of the deuteron. Several feasible experiments for probing point-like configurations in hadrons in hA collisions with the Drell-Yan lepton pair trigger are suggested. It is also demonstrated that the Drell-Yan pair production processes provide an effective way of measuring the superfast quark distribution up to x ∼ 2.