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Exchange Currents and Nucleon Deformation

  • A. J. Buchmann
Conference paper
Part of the Few-Body Systems book series (FEWBODY, volume 11)

Abstract

Information concerning the intrinsic deformation of the proton can be obtained by studying the electromagnetic p → Δ+ quadrupole transition. Recent experiments have shown that the electric quadrupole (E2) strength in γp → Δ+ is about 10 times larger than predicted by the simple quark model using only one-body currents. Our analysis provides compelling evidence for the dominance of exchange currents in the N → Δ quadrupole transition, and identifies the physical mechanism leading to the observed E2 strength.

Keywords

Quadrupole Moment Charge Radius Exchange Current Charge Operator Double Spin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1999

Authors and Affiliations

  • A. J. Buchmann
    • 1
  1. 1.Institute for Theoretical PhysicsUniversity of TübingenTubingenGermany

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