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Related Experiment Videos

Evidence for a three-nucleon-force effect in proton-deuteron elastic scattering.

R V Cadman1, J Brack, W J Cummings

  • 1Department of Physics, University of Illinois, Urbana 61801, USA.

Physical Review Letters
|February 15, 2001
PubMed
Summary

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Measurements of proton-deuteron scattering confirm the significant role of three-nucleon forces in nuclear dynamics. These findings highlight the importance of three-body forces for understanding nuclear properties.

Area of Science:

  • Nuclear Physics
  • Particle Physics

Background:

  • Advancements in spin-polarized internal targets for storage rings enable precise measurements.
  • Proton-deuteron elastic scattering is a key process for probing nuclear interactions.

Purpose of the Study:

  • To measure polarization observables in 197 MeV proton-deuteron elastic scattering.
  • To investigate the contribution of three-nucleon forces to these observables.

Main Methods:

  • Utilized spin-polarized internal targets in a storage ring.
  • Performed measurements of proton scattering from vector-polarized deuterons.
  • Measured polarization observables A(y), iT11, and C(y,y).

Main Results:

  • Experimental data for A(y), iT11, and C(y,y) were obtained.

Related Experiment Videos

  • Comparison with theoretical calculations showed the necessity of three-nucleon forces.
  • The results provide evidence for the contribution of three-nucleon forces to scattering observables.

    • Conclusions:

    • Three-nucleon forces play a crucial role in proton-deuteron scattering.
    • Dynamical nuclear properties are significantly influenced by three-body forces derived from static properties.