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.

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

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Cited by in corpus (18)

• Precision Studies of QCD in the Low Energy Domain of the EIC
• New Results on Short-Range Correlations in Nuclei
• Covariant multipole expansion of local currents for massive states of any spin
• The energy-momentum tensor of spin-1 hadrons: formalism
• Exposing Novel Quark and Gluon Effects in Nuclei
• Transversity generalized parton distributions for the deuteron
• Electron-deuteron deep-inelastic scattering with spectator nucleon tagging and final-state interactions at intermediate x
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• Searching for three-nucleon short-range correlations
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• Probing the Deuteron at Very Large Internal Momenta
• Deuteron electrodisintegration with unitarily evolved potentials
• A New Structure in the Deuteron
• High x Structure Function of the Virtually Free Neutron
• Electron scattering from a deeply bound nucleon on the light-front
• Meaning of the nuclear wave function
• Reduced nuclear helicity amplitudes for deuteron electrodisintegration and other processes