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Generalized parton distributions in the deuteron.

E R Berger1, F Cano, M Diehl

  • 1CPhT, Ecole Polytechnique, F-91128 Palaiseau, France.

Physical Review Letters
|October 3, 2001
PubMed
Summary

We introduce generalized quark and gluon distributions in the deuteron. These distributions reveal the complex interactions between nucleon and parton behavior within the deuteron's structure.

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Area of Science:

  • Nuclear Physics
  • Particle Physics
  • Quantum Chromodynamics

Background:

  • The deuteron, the simplest nucleus, provides a unique laboratory for studying nuclear structure.
  • Understanding the internal dynamics of the deuteron is crucial for nuclear physics.
  • Parton distribution functions (PDFs) describe the momentum distribution of quarks and gluons within hadrons.

Purpose of the Study:

  • To introduce and define generalized quark and gluon distributions specifically for the deuteron.
  • To explore the theoretical properties of these novel distributions.
  • To establish a connection between these distributions and experimentally accessible processes.

Main Methods:

  • Theoretical framework for generalized parton distributions (GPDs) applied to the deuteron.
  • Analysis of exclusive processes such as deeply virtual Compton scattering (DVCS) and meson electroproduction.
  • Investigation of the deuteron wave function in terms of its constituent nucleon and parton degrees of freedom.

Main Results:

  • Definition of generalized quark and gluon distributions for the deuteron.
  • Characterization of the basic properties of these distributions.
  • Identification of specific exclusive processes for their experimental measurement.

Conclusions:

  • Generalized parton distributions offer a new window into the deuteron's structure.
  • These distributions probe the intricate interplay between nucleon and parton degrees of freedom.
  • Experimental measurements of these distributions will advance our understanding of nuclear dynamics.

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