Electromagnetic effects and the long-standing three-nucleon analyzing power puzzle

W. Tornow, E. M. Neidel, D. E. González Trotter, C. R. Howell, A. S. Crowell, R. A. Macri, R. L. Walter, G. J. Weisel, J. Esterline, H. Witala, B. J. Crowe, R. S. Pedroni, D. M. Markoff

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

New results for the neutron-deuteron analyzing power Ay (θ) at En = 1.2 and 1.9 MeV and their comparison to proton-deuteron data reveal a sizeable and unexpected difference which increases with decreasing center-of-mass energy. This finding calls for the theoretical treatment of a subtle electromagnetic effect presently not incorporated in rigorous three-nucleon scattering calculations, before it is justified to invoke charge-dependent three-nucleon forces and/or other new physics.

Original languageEnglish (US)
Pages (from-to)258-261
Number of pages4
JournalModern Physics Letters A
Volume18
Issue number2-6
DOIs
StatePublished - Feb 28 2003

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics
  • Physics and Astronomy(all)

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