Modern Studies of the Deuteron: from the Lab Frame to the Light Front

Abstract

We review the recent progress made in studies of deuteron structure at small internucleon distances. This progress is largely facilitated by the new generation of experiments in deuteron electrodisintegration carried out at unprecedentedly high momentum transfer. The theoretical analysis of these data confirms the onset of the high energy eikonal regime in the scattering process which allows one to separate long range nuclear effects from the effects genuinely related to the short distance structure of the deuteron. Our conclusion is that for the first time the deuteron is probed at relative momenta beyond 300 MeV/c without dominating long range effects. As a result, at these large nucleon momenta the cross section is sensitive to the nuclear dynamics at sub-fermi distances. Due to large internal momenta involved we are dealing with the relativistic bound state that is best described by the light-cone momentum distribution of nucleons in the deuteron. We present the first attempt of extracting the deuteron light-cone momentum distribution function from data and discuss the importance of this quantity for studies of QCD structure of the bound nucleon in deep inelastic scattering off the deuteron. We conclude the review giving an outlook of the next generation of high energy experiments which will extend our reach to much smaller distances in the deuteron.

Mini-Review, to be published in International Journal of Modern Physics E

References in corpus (7)

• Momentum sharing in imbalanced Fermi systems
• Evidence for the Strong Dominance of Proton-Neutron Correlations in Nuclei
• Recent observation of short range nucleon correlations in nuclei and their implications for the structure of nuclei and neutron stars
• A new calculation for D(e,e'p)n at GeV energies
• Final-state interactions in semi-inclusive deep inelastic scattering off the Deuteron
• The f_LT Response Function of D(e,e'p)n at Q^2=0.33(GeV/c)^2
• Hard breakup of the deuteron into two Delta-isobars

Cited by in corpus (8)

• Precision Studies of QCD in the Low Energy Domain of the EIC
• New Results on Short-Range Correlations in Nuclei
• The energy-momentum tensor of spin-1 hadrons: formalism
• Searching for three-nucleon short-range correlations
• Multi-Nucleon Short-Range Correlation Model for Nuclear Spectral Functions: I. Theoretical Framework
• Spatial densities of momentum and forces in spin-one hadrons
• A New Structure in the Deuteron
• Reduced nuclear helicity amplitudes for deuteron electrodisintegration and other processes